Dear Sandy,

I have reviewed the latest updated document and it looks good to me.
I can also approve the RFC for publication.
Thanks a lot!

Best regards,
Kwang Pyo Choi

2026년 2월 7일 (토) AM 2:07, Youngkwon Lim <[email protected]>님이 작성:

> Hi Sandy,
>
> Thank you for clarification.
>
> Sincerely,
> Youngkwon.
>
> On Fri, Feb 6, 2026, 11:01 Independent Submissions Editor (Eliot Lear) <
> [email protected]> wrote:
>
>> Hi Youngkwon
>>
>> Thanks for that.  However, each author should separately review and
>> approve.
>>
>> Regards,
>>
>> Eliot
>> On 06.02.2026 17:43, Youngkwon Lim wrote:
>>
>> Dear Sandy,
>>
>> We have reviewed the updated document and everything looks good to us. On
>> behalf of ther authors, I can approve the RFC for publication. Thank you!
>>
>> Sincerely,
>> Youngkwon
>>
>> On Fri, Feb 6, 2026, 08:55 Sandy Ginoza <[email protected]>
>> wrote:
>>
>>> Hi Youngkwon,
>>>
>>> The document has been updated and the files are available here:
>>>    https://www.rfc-editor.org/authors/rfc9924.xml
>>>    https://www.rfc-editor.org/authors/rfc9924.txt
>>>    https://www.rfc-editor.org/authors/rfc9924.pdf
>>>    https://www.rfc-editor.org/authors/rfc9924.html
>>>
>>>
>>> Diffs of most recent updates only:
>>>    https://www.rfc-editor.org/authors/rfc9924-lastdiff.html
>>>    https://www.rfc-editor.org/authors/rfc9924-lastrfcdiff.html (side by
>>> side)
>>>
>>>
>>> AUTH48 diffs:
>>>    https://www.rfc-editor.org/authors/rfc9924-auth48diff.html
>>>    https://www.rfc-editor.org/authors/rfc9924-auth48rfcdiff.html (side
>>> by side)
>>>
>>> Comprehensive diffs:
>>>    https://www.rfc-editor.org/authors/rfc9924-diff.html
>>>    https://www.rfc-editor.org/authors/rfc9924-rfcdiff.html (side by
>>> side)
>>>
>>>
>>> Please review and let us know if any additional updates are needed or if
>>> you approve the RFC for publication.
>>>
>>> Thank you,
>>> Sandy Ginoza
>>> RFC Production Center
>>>
>>>
>>>
>>> > On Feb 5, 2026, at 8:04 PM, Youngkwon Lim <[email protected]> wrote:
>>> >
>>> > Dear Sandy,
>>> >
>>> > Thank you for the quick response. We have reviewed the new changes and
>>> they are all looking good. During the final review, we have identified
>>> several additional typos. Please see attached file with corrections.
>>> >
>>> > Sincerely,
>>> > Youngkwon
>>> >
>>> > On Thu, Feb 5, 2026, 16:04 Sandy Ginoza <[email protected]>
>>> wrote:
>>> > Hi Youngkwon, Eliot*,
>>> >
>>> > * Eliot - please review the updates and let us know if you have any
>>> concerns.
>>> >
>>> > Youngkwon, thank you for your thorough reply and for updating the
>>> XML!  We made a few additional changes (e.g., removed “version of this
>>> document” in additional places), so please be sure to review the updates
>>> carefully and let us know if any further changes are needed.
>>> >
>>> > The files here available here:
>>> >    https://www.rfc-editor.org/authors/rfc9924.xml
>>> >    https://www.rfc-editor.org/authors/rfc9924.txt
>>> >    https://www.rfc-editor.org/authors/rfc9924.pdf
>>> >    https://www.rfc-editor.org/authors/rfc9924.html
>>> >
>>> > AUTH48 diffs (highlights updates since entering AUTH48):
>>> >    https://www.rfc-editor.org/authors/rfc9924-auth48diff.html
>>> >    https://www.rfc-editor.org/authors/rfc9924-auth48rfcdiff.html
>>> (side by side)
>>> >
>>> > Comprehensive diffs:
>>> >    https://www.rfc-editor.org/authors/rfc9924-diff.html
>>> >    https://www.rfc-editor.org/authors/rfc9924-rfcdiff.html (side by
>>> side)
>>> >
>>> > Thank you,
>>> > Sandy Ginoza
>>> > RFC Production Center
>>> >
>>> >
>>> >
>>> > > On Feb 5, 2026, at 11:18 AM, Youngkwon Lim <[email protected]>
>>> wrote:
>>> > >
>>> > > Dear Sandy,
>>> > >
>>> > > I have reviewed your comments. They are really helpful. I have
>>> disposed all of them. Please see the comments in red below. I have made
>>> changes to XML file and created PDF and DIFF ast attached so that I can
>>> review the version after update.
>>> > >
>>> > >
>>> > >
>>> > > 1) <!-- [rfced] Does "but between transformed values" mean "but with
>>> > > prediction between transformed values"?  Please clarify.
>>> > > Agree with the suggested text
>>> > >
>>> > > Original:
>>> > >    *  Intra frame coding without prediction between pixel values but
>>> > >       between transformed values for low delay encoding;
>>> > > -->
>>> > >
>>> > >    * Intra frame coding without prediction between pixel values but
>>> with prediction
>>> > >       between transformed values for low delay encoding;
>>> > >
>>> > >
>>> > >
>>> > > 2) <!-- [rfced] For clarity, may this text be updated as follows?
>>> > >
>>> > > Agree with the suggested text
>>> > >
>>> > > Original:
>>> > >    *  Multiple decoding and re-encoding without severe visual quality
>>> > >       degradation; and
>>> > >
>>> > > -->
>>> > >
>>> > >    *  the ability to decode and re-encode multiple times without
>>> severe
>>> > >       visual quality degradation; and
>>> > >
>>> > >
>>> > >
>>> > > 3) <!-- [rfced] We do not believe we see "I" used in this manner,
>>> though we
>>> > > do see instances of "i".  Please review and let us know if "I"
>>> should be
>>> > > removed or if other changes are needed.
>>> > >
>>> > > “I” can be removed. “i” in section 3.2.1 and 5.3.7 are array index.
>>> They can stay unchanged.
>>> > >
>>> > >
>>> > > Original Section 2.2:
>>> > >    *  I: intra
>>> > >
>>> > > Original Section 3.2.1:
>>> > >    *  sum (i=x, y, f(i)) : a summation of f(i) with i taking all
>>> integer
>>> > >       values from x up to and including y
>>> > >
>>> > > Original Section 5.3.7:
>>> > >       The array index i specifies an indicator for the color
>>> > >       component;  ...
>>> > > -->
>>> > >
>>> > >
>>> > > 4) <!-- [rfced] For clarity, may we update the text as follows?  If
>>> this is
>>> > > incorrect, please clarify what is following widely used industry
>>> practices.
>>> > > Or is the exception per widely used industry practices?
>>> > > The operators in Sections 3.2.1 and 3.2.2 are the exceptions from C
>>> programming language. Updated text proposed.
>>> > >
>>> > > Original:
>>> > >    The operators and the order of precedence are the same as used in
>>> the
>>> > >    C programming language [ISO9899], with the exception of the
>>> operators
>>> > >    described in the Section 3.2.1 and Section 3.2.2 following widely
>>> > >    used industry practices for video codecs.
>>> > >
>>> > > Perhaps:
>>> > >    Following widely used industry practices for video codecs, the
>>> operators
>>> > >    and the order of precedence are the same as used in the C
>>> programming
>>> > >    language [ISO9899], with the exception of the operators described
>>> in the
>>> > >    Sections 3.2.1 and 3.2.2.
>>> > > -->
>>> > >    The operators and the order of precedence are the same as used in
>>> the
>>> > >    C programming language [ISO9899]. However, there are some
>>> exceptions described in the
>>> > >    Sections 3.2.1 and 3.2.2, which follows widely
>>> > >
>>> > >    used industry practices for video codecs.
>>> > >
>>> > >
>>> > > 5) <!-- [rfced] Should "square parentheses" be "square brackets"?
>>> > > In our understanding both square parentheses and square brackets
>>> refers “[“ and “]”. We can change square parentheses to square brackets.
>>> > >
>>> > >
>>> > >
>>> > > Original:
>>> > >    Square parentheses are used for the indexing
>>> > >    of arrays.
>>> > > -->
>>> > >    Square brackets are used for the indexing
>>> > >    of arrays.
>>> > >
>>> > > 6) <!-- [rfced] We are having trouble parsing "depending on the
>>> Chroma
>>> > > format sampling structure" - what is depending on that structure?
>>> > > The values of the variables depends on the chroma format and the
>>> chroma format is signaled by the syntax element chroma_format_idc.
>>> > >
>>> > >
>>> > >
>>> > > Original:
>>> > >    The variables SubWidthC, SubHeightC and NumComps are specified in
>>> > >    Table 2, depending on the chroma format sampling structure, which
>>> is
>>> > >    specified through chroma_format_idc.
>>> > >
>>> > > Perhaps:
>>> > >    The variables SubWidthC, SubHeightC, and NumComps are specified in
>>> > >    Table 2, according to the chroma format sampling structure, which
>>> is
>>> > >    specified through chroma_format_idc.
>>> > > -->
>>> > >    The values of the variables SubWidthC, SubHeightC and NumComps
>>> depends on the chroma format sampling structure as specified in
>>> > >    Table 2. The chroma format sampling structure is signaled through
>>> chroma_format_idc.
>>> > >
>>> > >
>>> > >
>>> > > 7) <!-- [rfced] Is "1D" needed here, as section 4.4.1 indicates that
>>> the
>>> > > zig-zag process converts a 2D array into a 1D array? Simplifying the
>>> > > sentence improves readability.
>>> > >
>>> > > Agree with the suggestion.
>>> > >
>>> > > Original:
>>> > >    *  The variable forwardScan is derived by invoking zig-zag scan
>>> order
>>> > >       1D array initialization process as specified in Section 4.4.1
>>> with
>>> > >       input parameters blkWidth and blkHeight.
>>> > >
>>> > > Perhaps:
>>> > >    *  The variable forwardScan is derived by invoking the zig-zag
>>> scan
>>> > >       order process as specified in Section 4.4.1 with
>>> > >       input parameters blkWidth and blkHeight.
>>> > > -->
>>> > >
>>> > >    *  The variable forwardScan is derived by invoking the zig-zag
>>> scan
>>> > >       order initialization process as specified in Section 4.4.1 with
>>> > >
>>> > >       input parameters blkWidth and blkHeight.
>>> > >
>>> > >
>>> > >
>>> > > 8) <!-- [rfced] For readability, may we update this sentence as
>>> follows?
>>> > > Agree with the suggestion.
>>> > >
>>> > >
>>> > > Original:
>>> > >    The APV bitstream is described in this document using syntax code
>>> > >    based on the C programming language [ISO9899] and uses its
>>> if/else,
>>> > >    while, and for keywords as well as functions defined within this
>>> > >    document.
>>> > >
>>> > > Perhaps:
>>> > >    The APV bitstream is described using syntax code
>>> > >    based on the C programming language [ISO9899] - including use of
>>> the
>>> > >    keywords if/else, while, and for - as well as functions defined
>>> within
>>> > >    this document.
>>> > > -->
>>> > >    The APV bitstream is described using syntax code
>>> > >    based on the C programming language [ISO9899] - including use of
>>> the
>>> > >    keywords if/else, while, and for - as well as functions defined
>>> within
>>> > >    this document.
>>> > >
>>> > > 9) <!-- [rfced] Can "of this version of the document" be dropped in
>>> > > multiple places, since section references are assumed to be in this
>>> > > document (unless specified otherwise) and because the HTML and PDF
>>> link to
>>> > > the relevant sections of the given document?  For example:
>>> > >    Agree with the suggestion. It was a kind of habit to mention
>>> ‘this version’ to make the document future proof. As there will be no
>>> versioning of RFC, it will be fine to remove such phrase.
>>> > >
>>> > >
>>> > > Original Section 5.3.3:
>>> > >    *  reserved_zero_8bits
>>> > >
>>> > >       MUST be equal to 0 in bitstreams conforming to the profiles
>>> > >       specified in Section 9 of this version of document.  Values of
>>> > >       reserved_zero_8bits greater than 0 are reserved for future use.
>>> > >       Decoders conforming to the profiles specified in Section 9 of
>>> this
>>> > >       version of document MUST ignore PBU with values of
>>> > >       reserved_zero_8bits greater than 0.
>>> > > -->       MUST be equal to 0 in bitstreams conforming to the profiles
>>> > >       specified in Section 9.  Values of
>>> > >
>>> > >       reserved_zero_8bits greater than 0 are reserved for future use.
>>> > >       Decoders conforming to the profiles specified in Section 9
>>> MUST ignore PBU with values of
>>> > >       reserved_zero_8bits greater than 0.
>>> > >
>>> > >
>>> > >
>>> > > Original Section 5.3.5:
>>> > >   *  reserved_zero_8bits
>>> > >
>>> > >       MUST be equal to 0 in bitstreams conforming to the profiles
>>> > >       specified in Section 9 of this version of document.  Values of
>>> > >       reserved_zero_8bits greater than 0 are reserved for future use.
>>> > >       Decoders conforming to the profiles specified in Section 9 of
>>> this
>>> > >       version of document MUST ignore PBU with values of
>>> > >       reserved_zero_8bits greater than 0.
>>> > > -->
>>> > >       MUST be equal to 0 in bitstreams conforming to the profiles
>>> > >       specified in Section 9.  Values of
>>> > >
>>> > >       reserved_zero_8bits greater than 0 are reserved for future use.
>>> > >       Decoders conforming to the profiles specified in Section 9
>>> MUST ignore PBU with values of
>>> > >       reserved_zero_8bits greater than 0.
>>> > >
>>> > > 10) <!-- [rfced]  We are trying to draw a more clear connection
>>> between the
>>> > > text before and after the semicolon. Please consider whether the
>>> suggested
>>> > > text conveys the intended meaning.  Otherwise, please clarify.
>>> > >
>>> > > Note that this text appears multiple times; we will update all
>>> similar instances based on the outcome of this discussion.
>>> > >
>>> > > The sentence tries to say that if i==0 it is Y, if i==1 it is Cb,
>>> and if i==2 it is Cr. I have proposed revision to make it clearer.
>>> > >
>>> > > Original:
>>> > >       The array index i specifies an indicator for the color
>>> > >       component; when chroma_format_idc is equal to 2 or 3, 0 for Y,
>>> 1
>>> > >       for Cb and 2 for Cr.
>>> > >
>>> > > Perhaps:
>>> > >    The array index i specifies an indicator for the color
>>> > >    component when chroma_format_idc is equal to 2 or 3, Y is 0,
>>> > >    Cb is 1, and CR is 2.
>>> > > -->
>>> > >       The array index i specifies an indicator for the color
>>> > >       component; when chroma_format_idc is equal to 2 or 3, the
>>> value of the index i is equal to 0 for Y component, 1
>>> > >
>>> > >       for Cb and 2 for Cr.
>>> > >
>>> > >
>>> > > 11) <!-- [rfced] Please confirm that no additional explanatory text
>>> is
>>> > > needed after Figure 21.
>>> > >
>>> > > A sentence describing the basic function of the code can be added.
>>> > >
>>> > > --> The tile_data() syntax calculates the location of the
>>> macroblocks belong to each tile and collect them.
>>> > >
>>> > >
>>> > >
>>> > > 12) <!-- [rfced]  How may we expand "DC"?  Differential coding?
>>> Will it be
>>> > > understood by readers without expansion?
>>> > >
>>> > > In signal processing, DC refers mean value of the waveform. The term
>>> originally came from direct current. Normally it is not expanded. (DC bias
>>> - Wikipedia)
>>> > >
>>> > >
>>> > > Original:
>>> > >    *  abs_dc_coeff_diff
>>> > >
>>> > >       specifies the absolute value of the difference between the
>>> current
>>> > >       DC transform coefficient level and PrevDC.
>>> > > -->
>>> > >
>>> > >
>>> > > 13) <!-- [rfced] "It is the requirement of bitstream conformance" is
>>> a bit
>>> > > awkward to read.  Please consider whether the suggested update is
>>> correct.
>>> > > Otherwise, please clarify.
>>> > >
>>> > > The phrase describes the requirements to the bitstream conforming to
>>> this document. Please see the revised text below.
>>> > >
>>> > > Original:
>>> > >       It is the requirement of bitstream conformance that
>>> > >       the coded tiles of the frame MUST contain tile data for every
>>> MB
>>> > >       of the frame, such that the division of the frame into tiles
>>> and
>>> > >       the division of the tiles into MBs each forms a partitioning of
>>> > >       the frame.
>>> > >
>>> > > Perhaps:
>>> > >       For conforming bitstreams, the coded tiles of the frame MUST
>>> contain
>>> > >       tile data for every MB
>>> > >       of the frame, such that the division of the frame into tiles
>>> and
>>> > >       the division of the tiles into MBs each forms a partitioning of
>>> > >       the frame.
>>> > > -->
>>> > >       For the bitstreams conforming to this document, the coded
>>> tiles of the frame MUST contain
>>> > >       tile data for every MB
>>> > >       of the frame, such that the division of the frame into tiles
>>> and
>>> > >       the division of the tiles into MBs form a partitioning of
>>> > >       the frame.
>>> > >
>>> > > 14) <!-- [rfced] Please clarify "(when chroma_format_idc is equal to
>>> 2 or
>>> > > 3, Y, Cb, and Cr)."  Perhaps "(when chroma_format_idc is equal to 2
>>> or 3,
>>> > > and Y, Cb, and Cr are specified)"?
>>> > >
>>> > > The phrase tries to say that the three components, Y component, Cb
>>> component and Cr component are reconstructed. Please see the revised text
>>> below.
>>> > >
>>> > > Original:
>>> > >    Outputs of this process are the
>>> > >    reconstructed samples of all the NumComps color components (when
>>> > >    chroma_format_idc is equal to 2 or 3, Y, Cb, and Cr) for the
>>> current
>>> > >    MB.
>>> > >
>>> > > -->
>>> > > Outputs of this process are the reconstructed samples of all color
>>> components. The total number of color components is indicated by the value
>>> of the NumComps for the current MB. For example, when chroma_format_idc is
>>> equal to 2 or 3, the value of NumComps is equal to 3 and three components,
>>> Y component, Cb component, and Cr component, are reconstructed
>>> > >
>>> > >
>>> > > Similarly, please let us know how/if mention of Cb and Cr may be
>>> clarified
>>> > > here as well?
>>> > >
>>> > > Color components are ordered as Y, Cb and Cr. So, the first
>>> component is Y, the 2nd component is Cb and the 3rd component is Cr. Please
>>> see the revised text below.
>>> > >
>>> > >
>>> > > Original:
>>> > >    *  When chroma_format_idc is not equal to 0, let recSamples[1] be
>>> a
>>> > >       (MbWidthC)x(MbHeightC) array of the reconstructed samples of
>>> the
>>> > >       second color component (when chroma_format_idc is equal to 2
>>> or 3,
>>> > >       Cb).
>>> > >
>>> > > -->   *  When chroma_format_idc is not equal to 0, let recSamples[1]
>>> be a
>>> > >
>>> > >       (MbWidthC)x(MbHeightC) array of the reconstructed samples of
>>> the
>>> > >       second color component. For example, when chroma_format_idc is
>>> equal to 2 or 3,
>>> > >       recSamples[1] is Cb component.
>>> > >
>>> > >
>>> > >    ...
>>> > >
>>> > >    *  When chroma_format_idc is not equal to 0, let recSamples[2] be
>>> a
>>> > >       (MbWidthC)x(MbHeightC) array of the reconstructed samples of
>>> the
>>> > >       third color component(when chroma_format_idc is equal to 2 or
>>> 3,
>>> > >       Cr).
>>> > >
>>> > >
>>> > > -->
>>> > > *  When chroma_format_idc is not equal to 0, let recSamples[2] be a
>>> > >       (MbWidthC)x(MbHeightC) array of the reconstructed samples of
>>> the
>>> > >       third color component. For example, when chroma_format_idc is
>>> equal to 2 or 3,
>>> > >       recSamples[2] is Cr component.
>>> > >
>>> > >
>>> > >
>>> > > 15) <!-- [rfced] Section 6.2: Is there text missing after these
>>> bullets?
>>> > > Nothing appears after "the following applies."  Also, the formatting
>>> here
>>> > > looks odd.  Please review and let us know how the text may be
>>> updated.
>>> > > I have corrected nesting order and indentations of the section 6.2.
>>> > >
>>> > >    *  For yIdx = 0..numBlkY - 1, the following applies:
>>> > >
>>> > >       o  For xIdx = 0..numBlkX - 1, the following applies:
>>> > > -->
>>> > >
>>> > >
>>> > > 16) <!-- [rfced] Should the last 3 bulleted items be regular text
>>> (i.e.,
>>> > > not part of the bulleted list)?
>>> > > I have corrected nesting order and indentations of the section
>>> 6.3.2.2.
>>> > >
>>> > >
>>> > >
>>> > > 6.3.2.2.  Transformation process
>>> > >
>>> > >    Inputs to this process are:
>>> > >
>>> > >    *  a variable nTbS specifying the sample size of scaled transform
>>> > >       coefficients, and
>>> > >
>>> > >    *  a list of scaled transform coefficients x with elements x[j],
>>> with
>>> > >       j = 0..(nTbS - 1).
>>> > >
>>> > >    *  Output of this process is the list of transformed samples y
>>> with
>>> > >       elements y[i], with i = 0..(nTbS - 1).
>>> > >
>>> > >    *  The transformation matrix derivation process as specified in
>>> > >       Section 6.3.2.3. invoked with the transform size nTbS as input,
>>> > >       and the transformation matrix transMatrix as output.
>>> > >
>>> > >    *  The list of transformed samples y[i] with i = 0..(nTbS - 1) is
>>> > >       derived as follows:
>>> > >
>>> > >       y[i] = sum(j = 0, nTbS - 1, transMatrix[i][j] * x[j])
>>> > > -->
>>> > >
>>> > >
>>> > > 17) <!-- [rfced] Please confirm that no additional explanatory text
>>> is
>>> > > needed after Figure 28. -->
>>> > >
>>> > > added one sentence.
>>> > >
>>> > > 18) <!-- [rfced] Will readers be familiar with CIE 1931?  Please
>>> consider
>>> > > whether a reference should be added.  Note that "CIE 1931" is
>>> mentioned 4
>>> > > times.  If you would like to add a reference, please provide the
>>> reference
>>> > > entry.
>>> > >
>>> > > Added the reference to ISO specification specifying CIE 1931.
>>> > >
>>> > >
>>> > > Original:
>>> > >    *  primary_chromaticity_x[i]
>>> > >
>>> > >       specifies a 0.16 fixed-point format of X chromaticity
>>> coordinate
>>> > >       of mastering display as defined by CIE 1931, where i = 0, 1, 2
>>> > >       specifies Red, Green, Blue respectively.
>>> > > -->
>>> > >
>>> > >
>>> > > 19) <!-- [rfced] Please note that we expanded UUID as "Universally
>>> Unique
>>> > > Identifier."  Please let us know if any corrections are needed.
>>> > > OK
>>> > >
>>> > > Original:
>>> > >    *  uuid
>>> > >
>>> > >       MUST be a 128-bit value specified as a generated UUID
>>> according to
>>> > >       the procedures specified in [RFC9562].
>>> > > -->
>>> > >
>>> > >
>>> > > 20) <!-- [rfced] We are having trouble parsing this sentence.
>>> Perhaps "to
>>> > > specifically create different sets of constraints" is intended?
>>> > >
>>> > > sentence corrected.
>>> > >
>>> > >
>>> > >
>>> > > Original:
>>> > >    For example, a certain level L and a certain band
>>> > >    B can be combined with either profile X or profile Y to
>>> specifically
>>> > >    different set of constraints.
>>> > > -->
>>> > > For example, a certain level L and a certain band B can be combined
>>> with either profile X or profile Y to specifically define two different set
>>> of constraints.
>>> > >
>>> > > 21) <!-- [rfced] This sentence appears many times in this document.
>>> May we
>>> > > update it as follows?
>>> > >
>>> > > Updated with new sentence.
>>> > >
>>> > >
>>> > > Original:
>>> > >    Any levels and bands constraints specified in Section 9.4 MUST be
>>> > >    fulfilled.
>>> > >
>>> > > Perhaps:
>>> > >    Any levels and bands MUST adhere to the constraints specified in
>>> > >    Section 9.4.
>>> > > -->
>>> > > Coded frames conforming to the 422-10 profile <bcp14>MUST</bcp14>
>>> also conform to any levels and bands constraints specified in Section 9.4.
>>> > >
>>> > >
>>> > > 22) <!-- [rfced] Is "level B" correct, as opposed to "band B"?  Note
>>> that
>>> > > "level B" appears multiple times.
>>> > >
>>> > > Yes, it must be “band B” I have changed all.
>>> > >
>>> > >
>>> > >    *  The coded frame is indicated to conform to a band (by a
>>> specific
>>> > >       value of band_idc) that is lower than or equal to level B.
>>> > > -->
>>> > >
>>> > >
>>> > > 23) <!-- [rfced] We have updated the format of the header row of
>>> table 4 so
>>> > > it fits within the line-length limitiation.  Please review carefully
>>> and
>>> > > let us know if and adjustments are needed or if you have other
>>> suggestions
>>> > > for how it can be rendered.
>>> > > -->
>>> > > OK
>>> > >
>>> > >
>>> > > 24) <!-- [rfced] "no read" can be difficult to parse.  Perhaps this
>>> can be
>>> > > reworded?
>>> > >
>>> > > Original:
>>> > >    The implementation MUST ensure that no read outside
>>> > >    allocated and initialized memory occurs.
>>> > >
>>> > > A is OK.
>>> > >
>>> > >
>>> > > Perhaps A:
>>> > >    The implementation MUST ensure that any data outside
>>> > >    of the allocated and initialized memory cannot be read.
>>> > >
>>> > > Perhaps B:
>>> > >    The implementation MUST ensure that there is no
>>> > >    data outside of the allocated and initialized memory.
>>> > > -->
>>> > >
>>> > >
>>> > > 25) <!-- [rfced] [ISO9899] Please review.
>>> > > This reference currently points to a withdrawn version of ISO/IEC
>>> 9899:
>>> > > https://www.iso.org/standard/74528.html.
>>> > > The most current version of this reference is ISO/IEC 9899:2024.
>>> > >
>>> > > Should this reference be updated to point to the most current
>>> version?
>>> > >
>>> > > YES!
>>> > >
>>> > >
>>> > > Current:
>>> > >    [ISO9899]  ISO/IEC, "Information technology - Programming
>>> languages -
>>> > >               C", ISO/IEC 9899:2018, 2018,
>>> > >               <https://www.iso.org/standard/74528.html>.
>>> > > -->
>>> > >
>>> > >
>>> > > 26) <!-- [rfced] [CEA-861.3] Please review.
>>> > > CEA-861.3 appears to have been placed in "Historical" status (see:
>>> > > https://webstore.ansi.org/standards/cea/cea8612015-1528168). The
>>> most
>>> > > current version of this standard appears to be CTA-861.3-A (see:
>>> > > https://www.cta.tech/standards/cta-8613-a/). Note that the Consumer
>>> > > Electronics Association (CEA) changed its name to the "Consumer
>>> > > Technology Association" (CTA) in 2015.
>>> > >
>>> > > Should this reference be updated to point to CTA-861.3-A?
>>> > >
>>> > > agree with the update.
>>> > >
>>> > >
>>> > > Current:
>>> > >    [CEA-861.3]
>>> > >               CEA, "CEA-861.3, HDR Static Metadata Extension",
>>> January
>>> > >               2015.
>>> > > -->
>>> > >
>>> > >
>>> > > 27) <!-- [rfced] Please review whether any of the notes in this
>>> document
>>> > > should be in the <aside> element. It is defined as "a container for
>>> > > content that is semantically less important or tangential to the
>>> > > content that surrounds it" (
>>> https://authors.ietf.org/en/rfcxml-vocabulary#aside).
>>> > > -->
>>> > > NOTES are used to provide additional information for the readers. We
>>> don’t think the definition of <aside> matches with the intention. Please
>>> keep them as the notes.
>>> > >
>>> > > 28) <!-- [rfced] Please review the "Inclusive Language" portion of
>>> the
>>> > > online Style Guide <
>>> https://www.rfc-editor.org/styleguide/part2/#inclusive_language>
>>> > > and let us know if any changes are needed.  Updates of this nature
>>> > > typically result in more precise language, which is helpful for
>>> readers.
>>> > >
>>> > > Note that our script did not flag any words in particular, but this
>>> should
>>> > > still be reviewed as a best practice.
>>> > > -->
>>> > > We have found none.
>>> > >
>>> > > In addition to the changes according to your comments, I have also
>>> updated two references.
>>> > >
>>> > > OLD
>>> > >
>>> > >   [FFmpegAPVdec]
>>> > >               "FFmpeg implementation of APV decoder", 19 April 2025,
>>> > >               <https://git.ffmpeg.org/gitweb/ffmpeg.git/
>>> > >               commit/483cadf8d77d3260eec8781f5f18c50f27e468f8>.
>>> > >
>>> > >    [FFmpegAPVenc]
>>> > >               "FFmpeg implementation of APV encoder", 23 April 2025,
>>> > >               <https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/
>>> > >               fab691edaf53bbf10429ef3448f1f274e5078395>.
>>> > >
>>> > >
>>> > >
>>> > > NEW
>>> > >
>>> > > [FFmpegAPVdec]
>>> > > "FFmpeg implementation of APV decoder" , 20 November 2025,
>>> > > <https://
>>> > > ffmpeg.org/download.html#release_8.0>
>>> > > .
>>> > > [FFmpegAPVenc]
>>> > > "FFmpeg implementation of APV encoder" , 4 May 2025,
>>> > > <https://
>>> > > git.ffmpeg.org/gitweb/ffmpeg.git/commit/
>>> fab691edaf53bbf10429ef3448f1f274e5078395>
>>> > >
>>> > > Please let us know if you have any further questions or comments.
>>> > >
>>> > >
>>> > > Sincerely,
>>> > > Youngkwon
>>> > >
>>> > >
>>> > > On Wed, Feb 4, 2026, 13:47 Sandy Ginoza <
>>> [email protected]> wrote:
>>> > > Hi Youngkwon,
>>> > >
>>> > > Thank you for your reply.  We will wait to hear from you.
>>> > >
>>> > > Thank you,
>>> > > Sandy Ginoza
>>> > > RFC Production Center
>>> > >
>>> > >
>>> > >
>>> > > > On Feb 4, 2026, at 10:12 AM, Youngkwon Lim <[email protected]>
>>> wrote:
>>> > > >
>>> > > > Dear Sandy,
>>> > > >
>>> > > > Thank you for the notes. I have received your email yesterday. I'm
>>> reviewing the comments. I'll be able to send you the answers probably by
>>> tomorrow.
>>> > > >
>>> > > > Sincerely,
>>> > > > Youngkwon.
>>> > > >
>>> > > > On Wed, Feb 4, 2026, 12:10 Sandy Ginoza <
>>> [email protected]> wrote:
>>> > > > Hi Youngkwon,
>>> > > >
>>> > > > We understand that you would like to publish this document as
>>> quickly as possible.  This document was moved to AUTH48 (see
>>> https://mailarchive.ietf.org/arch/msg/auth48archive/gLcjKw1Lm4JZQefWIc2249CjaA0/).
>>> Please follow the instructions to ensure timely publication.
>>> > > >
>>> > > > In addition, please reply to the questions in our followup mail
>>> (see
>>> > > >
>>> https://mailarchive.ietf.org/arch/msg/auth48archive/2RYT4cM76OIcNmJl9PU5KFcBOqA/).
>>> Note that the RFC will not be published until the questions have been
>>> resolved and each of the authors has indicated that they have reviewed the
>>> document and approve it for publication.
>>> > > >
>>> > > > Please let us know if you have any questions.
>>> > > >
>>> > > > Thank you,
>>> > > > Sandy Ginoza
>>> > > > RFC Production Center
>>> > > >
>>> > > >
>>> > > >
>>> > > > > On Feb 1, 2026, at 10:59 AM, Youngkwon Lim <[email protected]>
>>> wrote:
>>> > > > >
>>> > > > > Dear Eliot,
>>> > > > >
>>> > > > > We fully understand and appreciate the efforts by the RPC and
>>> the reviewers including you. I absolutely agree with you that the quality
>>> of the work shouldn't be compromised for any reason. We, the authors, just
>>> don't want miss the opportunity to be part of the big events by a small
>>> delay which will also be an opportunity to express our thanks to the RPC as
>>> well.
>>> > > > >
>>> > > > > Sincerely,
>>> > > > > Youngkwon
>>> > > > >
>>> > > > >
>>> > > > > On Sun, Feb 1, 2026, 12:49 Independent Submissions Editor (Eliot
>>> Lear) <[email protected]> wrote:
>>> > > > > Hi!
>>> > > > > I want to make clear that publication of RFCs is not for
>>> marketing events.  The RPC will have worked quite hard to ensure the best
>>> quality version of your work.  For that to happen they MUST NOT be rushed.
>>> > > > > Eliot
>>> > > > > On 30.01.2026 20:42, Sarah Tarrant wrote:
>>> > > > >> Hi Youngkwon,
>>> > > > >>
>>> > > > >> We can do our best to get this to AUTH48 earlier next week. And
>>> from there, the best support you can give us to expedite the AUTH48 process
>>> is to send updates and approvals once you get that AUTH48 email.
>>> > > > >>
>>> > > > >> Sincerely,
>>> > > > >> Sarah Tarrant
>>> > > > >> RFC Production Center
>>> > > > >>
>>> > > > >>
>>> > > > >>> On Jan 30, 2026, at 1:06 PM, Youngkwon Lim <[email protected]>
>>> wrote:
>>> > > > >>>
>>> > > > >>> Dear Sarah,
>>> > > > >>>
>>> > > > >>> Thank you for checking. Would it be possible to make it happen
>>> by the next week? We are working on a big event regarding APV in general. I
>>> don't want to miss the opportunity to be part of it due to just a week
>>> delay. It will be really appreciated if you can consider the situation.
>>> Please let me know if you need any support from us to expedite the process.
>>> > > > >>>
>>> > > > >>> Sincerely,
>>> > > > >>> Youngkwon
>>> > > > >>>
>>> > > > >>> On Fri, Jan 30, 2026, 13:01 Sarah Tarrant <
>>> [email protected]> wrote:
>>> > > > >>> Hi Youngkwon,
>>> > > > >>>
>>> > > > >>> Thank you for checking in! Now, it looks like this draft
>>> should move to AUTH48 in the next 1 or 2 weeks.
>>> > > > >>>
>>> > > > >>> Sincerely,
>>> > > > >>> Sarah Tarrant
>>> > > > >>> RFC Production Center
>>> > > > >>>
>>> > > > >>>
>>> > > > >>>> On Jan 30, 2026, at 11:22 AM, Youngkwon Lim <
>>> [email protected]> wrote:
>>> > > > >>>>
>>> > > > >>>> Dear Sarah,
>>> > > > >>>>
>>> > > > >>>> As today is the last working day of the January, I'm just
>>> touching base with you again if there has been any update on the progress
>>> of the production. Thank you!
>>> > > > >>>>
>>> > > > >>>> Sincerely,
>>> > > > >>>> Youngkwon.
>>> > > > >>>>
>>> > > > >>>>
>>> > > > >>>> On Fri, Jan 9, 2026, 14:00 Sarah Tarrant <
>>> [email protected]> wrote:
>>> > > > >>>> Hi Youngkwon,
>>> > > > >>>>
>>> > > > >>>> Happy New Year to you as well!
>>> > > > >>>>
>>> > > > >>>> It's still looking like your draft should enter AUTH48 closer
>>> to the end of January 2026.
>>> > > > >>>>
>>> > > > >>>> Sincerely,
>>> > > > >>>> Sarah Tarrant
>>> > > > >>>> RFC Production Center
>>> > > > >>>>
>>> > > > >>>>
>>> > > > >>>>> On Jan 8, 2026, at 1:37 PM, Youngkwon Lim <
>>> [email protected]> wrote:
>>> > > > >>>>>
>>> > > > >>>>> Dear Sarah,
>>> > > > >>>>>
>>> > > > >>>>> Happy New Year!
>>> > > > >>>>>
>>> > > > >>>>> I hope you have a enjoyable holiday season and started a
>>> great new year.
>>> > > > >>>>>
>>> > > > >>>>> I just wanted to touch base with you about the progress of
>>> the edit and see if you have more visibility about the dates for the next
>>> step.
>>> > > > >>>>>
>>> > > > >>>>> Sincerely,
>>> > > > >>>>> Youngkwon Lim
>>> > > > >>>>>
>>> > > > >>>>>
>>> > > > >>>>>
>>> > > > >>>>> On Thu, Oct 23, 2025, 11:52 Sarah Tarrant <
>>> [email protected]> wrote:
>>> > > > >>>>> Hi Young,
>>> > > > >>>>>
>>> > > > >>>>> Based on the current processing time, it looks like
>>> draft-lim-apv-09 would enter AUTH48 in January, after the holiday season.
>>> > > > >>>>>
>>> > > > >>>>> Sincerely,
>>> > > > >>>>> Sarah Tarrant
>>> > > > >>>>> RFC Production Center
>>> > > > >>>>>
>>> > > > >>>>>
>>> > > > >>>>>> On Oct 22, 2025, at 8:32 AM, Youngkwon Lim <
>>> [email protected]> wrote:
>>> > > > >>>>>>
>>> > > > >>>>>> Thank you for the confirmation. BTW, do you have any time
>>> frame expected about AUTH48 in this case you can guess? Just in case, as we
>>> are approaching holiday season.
>>> > > > >>>>>>
>>> > > > >>>>>> Sincerely,
>>> > > > >>>>>> Young.
>>> > > > >>>>>>
>>> > > > >>>>>> On Wed, Oct 22, 2025, 07:49 Sarah Tarrant <
>>> [email protected]> wrote:
>>> > > > >>>>>> Hi Young,
>>> > > > >>>>>>
>>> > > > >>>>>> Thank you for your reply. We will reach out if we need
>>> further clarification on anything during the editing process.
>>> > > > >>>>>>
>>> > > > >>>>>> Sincerely,
>>> > > > >>>>>> Sarah Tarrant
>>> > > > >>>>>> RFC Production Center
>>> > > > >>>>>>
>>> > > > >>>>>>
>>> > > > >>>>>>> On Oct 21, 2025, at 7:43 PM, Youngkwon Lim <
>>> [email protected]> wrote:
>>> > > > >>>>>>>
>>> > > > >>>>>>> Dear the RPC Team,
>>> > > > >>>>>>>
>>> > > > >>>>>>> We are really excited that the draft has reached this step
>>> and ready for production.
>>> > > > >>>>>>>
>>> > > > >>>>>>> We have reviewed the questions in your email and can
>>> confirm that no updates are required and there are no special request to
>>> make. You can process the 09 version of the draft as it is.
>>> > > > >>>>>>>
>>> > > > >>>>>>> We are really grateful to the shepherd who has reviewed
>>> the draft many times thoroughly and provide us many good comments. We will
>>> be happy to work with you to move forward this draft to the final
>>> publication. Please feel free to reach out to us if there are any questions
>>> or request to us. Thank you!
>>> > > > >>>>>>>
>>> > > > >>>>>>> Sincerely,
>>> > > > >>>>>>> Young
>>> > > > >>>>>>>
>>> > > > >>>>>>>
>>> > > > >>>>>>>
>>> > > > >>>>>>> ------ Original Message ------
>>> > > > >>>>>>> >From "Sarah Tarrant" <[email protected]>
>>> > > > >>>>>>> To [email protected]; [email protected];
>>> [email protected]; [email protected]; [email protected]
>>> > > > >>>>>>> Cc [email protected]; [email protected];
>>> [email protected]
>>> > > > >>>>>>> Date 10/21/2025 4:42:46 PM
>>> > > > >>>>>>> Subject Document intake questions about <draft-lim-apv-09>
>>> > > > >>>>>>>
>>> > > > >>>>>>>
>>> > > > >>>>>>>> Author(s),
>>> > > > >>>>>>>> Congratulations, your document has been successfully
>>> added to the RFC Editor queue!
>>> > > > >>>>>>>> The team at the RFC Production Center (RPC) is looking
>>> forward to working with you
>>> > > > >>>>>>>> as your document moves forward toward publication. To
>>> help reduce processing time
>>> > > > >>>>>>>> and improve editing accuracy, please respond to the
>>> questions below. Please confer
>>> > > > >>>>>>>> with your coauthors (or authors of other documents if
>>> your document is in a
>>> > > > >>>>>>>> cluster) as necessary prior to taking action in order to
>>> streamline communication.
>>> > > > >>>>>>>> If your document has multiple authors, only one author
>>> needs to reply to this
>>> > > > >>>>>>>> message.
>>> > > > >>>>>>>> As you read through the rest of this email:
>>> > > > >>>>>>>> * If you need/want to make updates to your document, we
>>> encourage you to make those
>>> > > > >>>>>>>> changes and resubmit to the Datatracker. This allows for
>>> the easy creation of diffs,
>>> > > > >>>>>>>> which facilitates review by interested parties (e.g.,
>>> authors, ADs, doc shepherds).
>>> > > > >>>>>>>> * If you feel no updates to the document are necessary,
>>> please reply with any
>>> > > > >>>>>>>> applicable rationale/comments.
>>> > > > >>>>>>>> Please note that the RPC team will not work on your
>>> document until we hear from you
>>> > > > >>>>>>>> (that is, your document will remain in AUTH state until
>>> we receive a reply). Even
>>> > > > >>>>>>>> if you don't have guidance or don't feel that you need to
>>> make any updates to the
>>> > > > >>>>>>>> document, you need to let us know. After we hear from
>>> you, your document will start
>>> > > > >>>>>>>> moving through the queue. You will be able to review and
>>> approve our updates
>>> > > > >>>>>>>> during AUTH48.
>>> > > > >>>>>>>> Please feel free to contact us with any questions you may
>>> have at
>>> > > > >>>>>>>> [email protected].
>>> > > > >>>>>>>> Thank you!
>>> > > > >>>>>>>> The RPC Team
>>> > > > >>>>>>>> --
>>> > > > >>>>>>>> 1) As there may have been multiple updates made to the
>>> document during Last Call,
>>> > > > >>>>>>>> please review the current version of the document:
>>> > > > >>>>>>>> * Is the text in the Abstract still accurate?
>>> > > > >>>>>>>> * Are the Authors' Addresses, Contributors, and
>>> Acknowledgments
>>> > > > >>>>>>>> sections current?
>>> > > > >>>>>>>> 2) Please share any style information that could help us
>>> with editing your
>>> > > > >>>>>>>> document. For example:
>>> > > > >>>>>>>> * Is your document's format or its terminology based on
>>> another document?
>>> > > > >>>>>>>> If so, please provide a pointer to that document (e.g.,
>>> this document's
>>> > > > >>>>>>>> terminology should match DNS terminology in RFC 9499).
>>> > > > >>>>>>>> * Is there a pattern of capitalization or formatting of
>>> terms? (e.g., field names
>>> > > > >>>>>>>> should have initial capitalization; parameter names
>>> should be in double quotes;
>>> > > > >>>>>>>> <tt/> should be used for token names; etc.)
>>> > > > >>>>>>>> 3) Please review the entries in the References section
>>> carefully with
>>> > > > >>>>>>>> the following in mind. Note that we will update as
>>> follows unless we
>>> > > > >>>>>>>> hear otherwise at this time:
>>> > > > >>>>>>>> * References to obsoleted RFCs will be updated to point
>>> to the current
>>> > > > >>>>>>>> RFC on the topic in accordance with Section 4.8.6 of RFC
>>> 7322
>>> > > > >>>>>>>> (RFC Style Guide).
>>> > > > >>>>>>>> * References to I-Ds that have been replaced by another
>>> I-D will be
>>> > > > >>>>>>>> updated to point to the replacement I-D.
>>> > > > >>>>>>>> * References to documents from other organizations that
>>> have been
>>> > > > >>>>>>>> superseded will be updated to their superseding version.
>>> > > > >>>>>>>> Note: To check for outdated RFC and I-D references, you
>>> can use
>>> > > > >>>>>>>> idnits <https://author-tools.ietf.org/idnits>. You can
>>> also help the
>>> > > > >>>>>>>> IETF Tools Team by testing idnits3 <
>>> https://author-tools.ietf.org/idnits3/>
>>> > > > >>>>>>>> with your document and reporting any issues to them.
>>> > > > >>>>>>>> 4) Is there any text that should be handled extra
>>> cautiously? For example, are
>>> > > > >>>>>>>> there any sections that were contentious when the
>>> document was drafted?
>>> > > > >>>>>>>> 5) Is there anything else that the RPC should be aware of
>>> while editing this
>>> > > > >>>>>>>> document?
>>> > > > >>>>>>>> 6) Would you like to participate in the RPC Pilot Test
>>> for editing in kramdown-rfc?
>>> > > > >>>>>>>> If so, please let us know and provide a self-contained
>>> kramdown-rfc file. For more
>>> > > > >>>>>>>> information about this experiment, see:
>>> > > > >>>>>>>>
>>> https://www.rfc-editor.org/rpc/wiki/doku.php?id=pilot_test_kramdown_rfc.
>>> > > > >>>>>>>>
>>> > > > >>>>>>>>
>>> > > > >>>>>>>>> On Oct 21, 2025, at 4:39 PM, [email protected]
>>> wrote:
>>> > > > >>>>>>>>> Author(s),
>>> > > > >>>>>>>>> Your document draft-lim-apv-09, which has been approved
>>> for publication as
>>> > > > >>>>>>>>> an RFC, has been added to the RFC Editor queue
>>> > > > >>>>>>>>> <https://www.rfc-editor.org/current_queue.php>.
>>> > > > >>>>>>>>> If your XML file was submitted using the I-D submission
>>> tool
>>> > > > >>>>>>>>> <https://datatracker.ietf.org/submit/>, we have already
>>> retrieved it
>>> > > > >>>>>>>>> and have started working on it.
>>> > > > >>>>>>>>> If you did not submit the file via the I-D submission
>>> tool, or
>>> > > > >>>>>>>>> if you have an updated version (e.g., updated contact
>>> information),
>>> > > > >>>>>>>>> please send us the file at this time by attaching it
>>> > > > >>>>>>>>> in your reply to this message and specifying any
>>> differences
>>> > > > >>>>>>>>> between the approved I-D and the file that you are
>>> providing.
>>> > > > >>>>>>>>> You will receive a separate message from us asking for
>>> style input.
>>> > > > >>>>>>>>> Please respond to that message. When we have received
>>> your response,
>>> > > > >>>>>>>>> your document will then move through the queue. The
>>> first step that
>>> > > > >>>>>>>>> we take as your document moves through the queue is
>>> converting it to
>>> > > > >>>>>>>>> RFCXML (if it is not already in RFCXML) and applying the
>>> formatting
>>> > > > >>>>>>>>> steps listed at <
>>> https://www.rfc-editor.org/pubprocess/how-we-update/>.
>>> > > > >>>>>>>>> Next, we will edit for clarity and apply the style guide
>>> > > > >>>>>>>>> (<https://www.rfc-editor.org/styleguide/>).
>>> > > > >>>>>>>>> You can check the status of your document at
>>> > > > >>>>>>>>> <https://www.rfc-editor.org/current_queue.php>.
>>> > > > >>>>>>>>> You will receive automatic notifications as your
>>> document changes
>>> > > > >>>>>>>>> queue state (for more information about these states,
>>> please see
>>> > > > >>>>>>>>> <https://www.rfc-editor.org/about/queue/>). When we
>>> have completed
>>> > > > >>>>>>>>> our edits, we will move your document to AUTH48 state
>>> and ask you
>>> > > > >>>>>>>>> to perform a final review of the document.
>>> > > > >>>>>>>>> Please let us know if you have any questions.
>>> > > > >>>>>>>>> Thank you.
>>> > > > >>>>>>>>> The RFC Editor Team
>>> > > > >>>>>>>>>
>>> > > > >>>>>>
>>> > > > >>>>>
>>> > > > >>>>
>>> > > > >>>
>>> > > > >>
>>> > > >
>>> > >
>>> >
>>> >
>>> <rfc9924_0205.diff.html><rfc9924_0205_authors.xml><rfc9924_0205_authors.pdf>
>>>
>>>
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