ghtly
bogus.
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Raymond Cheng (12022-07-06):
> FFmpeg has a handy set of filters, metadata/ametadata, which allow us
> to add, print or save per-frame metadata to a file. I will use these
> filters when I want to save the results from speech transcription,
> for instance. What is missing is a way to round-trip
as would
> > be desirable.
> Actually, the newer entry will overwrite the older entry; if you want
> multiple keys with the same value, you have to use the AV_DICT_MULTIKEY
> flag.
I stand corrected, thanks. This is still not the most logical behavior,
though.
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er that top-posting is forbidden on this mailing-list. If
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g the
feature you wanted to add, please?
To do that without too much hassle, I would: first, start again from a
new branch, make the "move to a function" commit; second, take the code
with the extra feature from the other branch and let git turn it into a
commit; third, clean up that
oto fail;
> -memcpy(pkt->data, frame->data[0], size);
> -}
>
> frame_metadata = frame->metadata;
> if (frame_metadata) {
> @@ -465,13 +409,23 @@ static int lavfi_read_packet(AVFormatContext *avctx,
> AVPacket *pkt)
> goto fail;
> }
>
ix is to find where the input is improperly validated, and
then revert this change.
I do not know how to exploit the
"48099/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-6754782204788736"
information to reproduce the bug and investigate.
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SW's work to be a good step in that direction.
It might seem so from the point of view of a user. From my point of view
of the person who maintains the framework of libavfilter, support for
subtitles is desirable, but SW's patches make my work later
significantly harder.
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e considering adding more media types for
libavfilter. They have been rudely ignored.
Are you here to help, or are you here to pour oil on the flame?
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Soft Works (12022-07-02):
> This can easily be done AFTER my patchset has been merged.
With exponentially more work. Out of question.
This is all I have to say to you on the subject.
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e than
you could chew and reverted to a quick and dirty solution.
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Paul B Mahol (12022-07-02):
> W} will fork FFmpeg code under new project as current situation is
> unbearable.
Who are "we"?
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Paul B Mahol (12022-07-02):
> Could you please mention in relevant thread of those subtitle work where
> duplication in code happened?
No. Currently, there is no solution, with or without code duplication.
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has been explained time and again that libavdevice is useful for
users of applications that are designed to expect a demuxer, to make
them use something more exotic than a demuxer.
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Paul B Mahol (12022-07-02):
> Can this be properly finally be fully reviewed and accepted?
As long as the patch does not have a solution to have all the utility
filters (setpts, trim, concat, etc.) working with subtitles too without
more code duplication, the review is just "NAK".
essary, including the XML
schema.
Please take care to document over what period the bit rate is computed.
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ed / referenced. But later.
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ff
o have all useful features of BPrint in the
dynamic buffer AVWriter and deprecate BPrint, since that was written in
part to learn and do BPrint better.
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ric writers from ffprobe
(JSON, XML) in lavu to be used by diagnostic filters. But I will not be
doing that with pedestrian strings.
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uge configure line.
Even from a usability perspective I thin it is not good: just because a
BOFH or a quirky package maintainer chose to select different defaults,
many examples, many stackoverflow answers stop working.
Better teach users to write explicit settings. They can write shell
scripts to make it
ore, but either way, Anton asked
> me to resurrect this patch since he intends to use this function too.
Ok, thanks for pointing it, I have no objection then.
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ults in several cases in a function that is not really useful because
of a small design flaw. Can you update other parts of the code to make
use of the new function?
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look it up. You are likely to receive no useful reply if
you continue.
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To un
>
> So, how does it work?
Please direct users questions to ffmpeg-users and include the exact
procedure you have used to try to build and the output it produced,
trimmed if necessary.
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Descript
Signed-off-by: Nicolas George
---
libavutil/Makefile | 3 +
libavutil/tests/xmlparser.c | 93 ++
libavutil/xmlparser.c | 644
libavutil/xmlparser.h | 58
4 files changed, 798 insertions(+)
create mode 100644 libavutil/tests
ely.
Signed-off-by: Nicolas George
---
libavutil/common.h | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavutil/common.h b/libavutil/common.h
index fd1404be6c..7a71be3c81 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -505,7 +505,9 @@ static av_always_inl
ocumentation, from having self-contained clean commits to the wording
of the commit messages.
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Traian Coza (12022-05-03):
> Sorry about the "top posting" my client does it automatically.
It's a poor craftsman who blames their tools.
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ant 1.
Look at how other people submit patches: several commits means several
mails.
> The source.err file seems to be empty, however. Should I be concerned about
> this? It seems to do with the fact that I've added some files.
Yes, you need to fix it.
> On Tue, May 3, 2022 at 3:54 AM
you thought of making
a branch: then you just need to specify the name of the branch from
which you branched.
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hanges that are
unambiguously and exclusively an improvement are acceptable.)
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To unsub
. The problem with line
spacing is the tiniest of drawtext problems: look for right-to-left,
ligatures and so much more.
If you want to enhance the output of drawtext, I think it would be more
efficient to choose a good layout engine library, Libre and portable,
and to make it use it optionally.
Reg
tly
works.
You made your bed.
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Paul B Mahol (12022-03-29):
> will apply
No objection.
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To unsubscr
p.str, 0);
> +av_bprint_finalize(, NULL);
You do not need a BPrint for that, the size of the expansion of %d is
very limited, especially the values that can be relevant here.
> }
> }
> if (o->nb_audio_ch_layouts) {
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ith the
"short" alias in the previous patch.
Also, there are many occurrences of "-ac" in the documentation, they
need to be updated too.
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.0 * (2.0 + pi - 16.0 / pi) * (1 << 24);
> +int64_t x2, result;
> +int32_t t1, t2;
Can you consider reuse the code from asrc_sine to generate a bit-exact
sin table?
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p...@sandflow.com (12022-03-07):
> From: Pierre-Anthony Lemieux
>
> ---
> libavformat/concatdec.c | 18 --
> 1 file changed, 4 insertions(+), 14 deletions(-)
This patch still LGTM.
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t you would rather be rude than wait a few days?
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won by being so annoying is that I cannot
consider looking into it right now because I am too annoyed and angry.
This is all I have to say to you.
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g to activate to work, including EOF.
There is a bug somewhere, and your analysis is not enough to know
exactly where.
Until I understand what is going on exactly and if there is a framework
bug that needs fixing, I demand you hold.
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Descr
ing wrong going on
there, and I want to understand what before this change makes it go
away: otherwise, we might be missing other similar bugs.
It has waited several months, a few days more will not hurt.
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to cover all the logic in
>> pick_format() and the logic in swap_*().
And having submodule-specific fate targets is convenient even if there
are only one test.
Please read the code assuming there are several tests, including tests
using aresample rather than scale.
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t behaves different
than WAV please let me know.
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Signed-off-by: Nicolas George
---
tests/Makefile | 1 +
tests/fate-run.sh| 4
tests/fate/libavfilter.mak | 9 +
tests/ref/fate/libavfilter-negotiation-alpha | 20
4 files changed, 34
Unlike pipe, slash does not require escaping.
Signed-off-by: Nicolas George
---
doc/filters.texi | 8
libavfilter/internal.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
Same as sent earlier today.
diff --git a/doc/filters.texi b/doc/filters.texi
index 8cba7f744d
Signed-off-by: Nicolas George
---
libavfilter/af_aformat.c | 8 +---
libavfilter/internal.h | 9 +
libavfilter/vf_format.c | 9 -
3 files changed, 18 insertions(+), 8 deletions(-)
Same as sent earlier today.
diff --git a/libavfilter/af_aformat.c b/libavfilter
Signed-off-by: Nicolas George
---
libavfilter/avfilter.h | 5 ++-
libavfilter/graphdump.c | 79 +++--
2 files changed, 80 insertions(+), 4 deletions(-)
Unchanged since last summer.
The last patch is what this is needed for.
diff --git a/libavfilter
Signed-off-by: Nicolas George
---
doc/ffmpeg.texi | 4
fftools/ffmpeg.h| 1 +
fftools/ffmpeg_filter.c | 14 ++
fftools/ffmpeg_opt.c| 3 +++
4 files changed, 22 insertions(+)
Unchanged since last summer.
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
Unlike pipe, slash does not require escaping.
Signed-off-by: Nicolas George
---
doc/filters.texi | 8
libavfilter/internal.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
Especially in makefiles, escaping is annoying.
diff --git a/doc/filters.texi b/doc
Signed-off-by: Nicolas George
---
libavfilter/af_aformat.c | 8 +---
libavfilter/internal.h | 9 +
libavfilter/vf_format.c | 9 -
3 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/libavfilter/af_aformat.c b/libavfilter/af_aformat.c
index d2599431dc
reviewing in the
future.
> LGTM.
Thanks, pushed.
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It has been deprecated for nine years.
Signed-off-by: Nicolas George
---
libavfilter/af_aformat.c | 11 ++-
1 file changed, 2 insertions(+), 9 deletions(-)
I want to share the delimiter-seeking function with vf_format and add
support for '/'.
diff --git a/libavfilter/af_aformat.c b
w versions of this
patch every few minutes. Please take your time. And before next time:
> int segment_time_metadata;
> +int unified_time_base;
Mangled indentation.
Missing documentation.
Spelling mistake in the title of the commit message.
Re
ere not counted, now they are.
- Cosmetic patches are counted.
- It does not take the size of the changes.
Using an imperfect solution for bootstrap is one thing, using it
permanently is another.
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p...@sandflow.com (12022-02-20):
> From: Pierre-Anthony Lemieux
>
> ---
> libavformat/concatdec.c | 19 +--
> 1 file changed, 5 insertions(+), 14 deletions(-)
LGTM.
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Paul B Mahol (12022-02-19):
> OK for the set.
Thanks, pushed.
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Nicolas George (12022-02-19):
> This would break input-driven filtering I think. I am looking into it.
See:
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-February/293240.html
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-February/293241.html
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Analyzed by Paul B Mahol .
Fixes OOM in #9081.
Signed-off-by: Nicolas George
---
libavfilter/vf_fps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/vf_fps.c b/libavfilter/vf_fps.c
index 99e679441e..0e5a1fec35 100644
--- a/libavfilter/vf_fps.c
+++ b/libavfilter
Signed-off-by: Nicolas George
---
libavfilter/avfilter.c | 8
libavfilter/filters.h | 8
2 files changed, 16 insertions(+)
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 7362bcdab5..1f37a70179 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter
Paul B Mahol (12022-02-19):
> Fixes OOM in #9081.
>
> Signed-off-by: Paul B Mahol
> ---
> libavfilter/vf_fps.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
This would break input-driven filtering I think. I am looking into it.
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Thilo Borgman (12022-01-31):
> > v10 attached.
>
> Also going to apply soon if there are no more comments.
I think you neglected to attach the file.
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cribed by the given string, or a negative
> AVERROR
> + * value.
> + */
> +int av_channel_layout_index_from_string(const AVChannelLayout
> *channel_layout,
> + const char *name);
> +
> +/**
> + * Get a c
ything else... needs more work.
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James Almer (12022-01-17):
> Like you said below, the functions must be reciprocal, so they can't take
> that field into account.
A serializaion function is supposed to serialize the whole structure. I
will not accept less.
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James Almer (12022-01-17):
> -map_channel works perfectly with the current bitmask API, and the new one.
Not if there are several times the same channel with different labels.
It should.
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James Almer (12022-01-17):
> Yes, which is why I'll make describe() stop looking at the name field.
Unacceptable.
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designation, but av_channel_layout_from_string()
> expects the designations only, never the custom label.
Oh, excellent point. av_channel_layout_from_string() should be able to
parse the output of av_channel_layout_describe_bprint() in all cases.
And it should be covered by FATE.
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e the parsing belongs
in a common API.
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nel_from_string(layout, "FC[piano]#2");
(I think it would be acceptable to limit the name, for example "names
with non-alphanumeric ASCII characters are not supported.)
And this need to go in the user documentation.
I am not sure if we also need a function to extract "all the FL
econds or centiseconds (%6N, %2N).
- It is somewhat compatible with GNU date and possibly a few others.
And I do not think it is harder to implement.
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om the point of view of the user?
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actually implement it.
Sorry, I completely missed you reply.
No, I do not think it is best: your solution requires the user to use a
different function, I find this inelegant and not user friendly. I like
the solution where the option is enabled by the format string itself
much more user friendly. Bu
is shared by the majority of
> contributors on this mailing list?
I do not need to: if we are a minority thinking that way, then the
majority can step in and do the work that "needs" to be done.
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se FFmpeg, who need it. We already
give good, free code, and they want more, API stability and backports
and security maintenance. I say: if you want it, pay somebody to do it.
(Not me, I am not interested, that is my point.)
This is reminiscent of the reaction of corporate drones to the log4j
bugs:
step in for the role of
release manager. And if nobody steps in, let us not make releases.
After all, WE do not need to make releases: it is the other projects who
need us to make releases.
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_
lisecond. It can later be expanded to
support %xN at any place in the format for any value of x.
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string API? If not, please explain
why?
2. Assuming we agree ‘yes’ on the previous question, do you think
AVWriter is a good candidate? If not, what else would you propose?
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!size_fit;
> +}
> +
> static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
> unsigned len, const char *key)
> {
I think the changes belong in a single patch.
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Descri
at-demuxer-simple1-lavf-mxf_d10 | 1 +
> tests/ref/fate/concat-demuxer-simple2-lavf-ts | 1 +
> 8 files changed, 24 insertions(+), 2 deletions(-)
Applied, thanks, and again sorry for the delay.
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at-demuxer-simple1-lavf-mxf_d10 | 1 +
> tests/ref/fate/concat-demuxer-simple2-lavf-ts | 1 +
> 8 files changed, 24 insertions(+), 2 deletions(-)
Sorry. I was about to apply it but something else came up. This version
looks even better. I will try to find time in the next few days.
R
knows the label, then the user can
write:
pan='stereo=0.3*.oboe+0.7*.piano'
and the system automatically pick the channels from the oboe and the
piano and figure out the matrix (if the oboe is recorded in mono for
example).
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_
nnel_layout_channel_from_string(), including tests.
Thanks. Now we need the user interface: how does the user say “the left
channel with label "oboe"”? Probably something like "FL.oboe". The
parsing functions need to be adapted.
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rings between layouts that are similar but
not equal is worth the added complexity.
(We may consider a ref-counted string type at some point, maybe, but
that is another story.)
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u propose, and
other people are allowed to weigh in when it is posted here, too.
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To un
, but that's the case either way.
You are still neglecting the user interface side of things. Please try
to consider actual scenarios with the example Marton and I gave from the
point of view of users using the generic command-line tool.
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ve people who come a little late deserve to know what the
arguments were and even to weigh in. IRC is a terrible medium for this
kind of discussion.
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) know about these strange layouts, and most
components only look at the standard part of the layout and behave as
they do now or with the straightforward extension to the more powerful
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we leave two
thirds of the uses cases for something else in side data, I would object
to.
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is too narrow. Currently, channel layouts are
also used to compute matrix coefficients for remixing, for example.
But even if we adopt this definition, mapping (oboe left, oboe right,
piano left, piano right) onto stereo is perfectly in scope.
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Nicolas George
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D
ref-counted.
Remember that I proposed a template to make ref-counted structures
easily:
https://ffmpeg.org/pipermail/ffmpeg-devel/2020-June/265227.html
(Notice that it was soon after the first version of this API was posted:
I was thinking of it already then.)
Regards,
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Nicolas George
s
d devices can flag the channel layout
they need, which they could not because of the limitation of the current
API, seems 100% in scope to me.
What is your definition of the scope of a channel layout API? I hope it
is not "we did it that way, anything it cannot do is beyond the scope".
string, even with a hard limit, would be fine.
I want a real string API for the layout→string function, and that can be
done later.
What I consider blocking is the ability to have several times the same
layout with a proper user interface.
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Nicolas George
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Descriptio
eep the current API.
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of 21:12:42.1234+0100.
Regards,
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ffmpeg-d
USER_SPECIFIED channel is the oboe, this USER_SPECIFIED
is the piano", and the user must be able to tell the API "the second
USER_SPECIFIED channel" or "the USER_SPECIFIED channel relating to the
piano".
B. Possibly, I do not personally insist on it like A: groups of
channels
y
ignored.
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