On Sun, Sep 8, 2024 at 8:07 PM Andrew Randrianasulu
wrote:
> On Sun, Sep 8, 2024 at 9:02 PM Paul B Mahol wrote:
> >
> > On Sun, Sep 8, 2024 at 7:49 AM Andrew Randrianasulu <
> randrianas...@gmail.com>
> > wrote:
> >
> > > git up to d9f594209fb1a
On Sun, Sep 8, 2024 at 7:49 AM Andrew Randrianasulu
wrote:
> git up to d9f594209fb1a9c87017034f943dcb311a9d2896
>
> first command
>
>
> bash-5.1$ /dev/shm/ffmpeg/ffmpeg -f lavfi -i yuvtestsrc -frames 1 -r
> 25 -vf format=rgba,format=yuv444p -color_range 1
> /dev/shm/yuv-mpeg-rgba-yuv444p.y4
On Wed, Jul 17, 2024 at 10:16 PM Carl Zwanzig wrote:
> On 7/17/2024 12:43 PM, Mark Filipak wrote:
> >> frame; some projectors would use a three-blade shutter to get
> >> supposedly smoother-looking motion.
>
> > Actually, z!, a double or triple shutter doesn't improve motion. It
> > reduces/elimi
On Fri, Jul 12, 2024 at 4:04 AM Jimmie wrote:
> Hi,
>
> I'm currently working on a project about Equi-Angular Cubemap (EAC).
>
> I need to sample an EAC texture but couldn't find one readily available.
> After some googling, I found that FFmpeg could be used to convert
> other 360 pictures to EAC
On Fri, Jul 12, 2024 at 12:43 AM Mark Filipak
wrote:
> On 11/07/2024 18.05, Vincent Deconinck wrote:
> > Hi,
> >
> > A few months ago, my GoPro randomly started creating some corrupt (or
> > partly-corrupt) video files, mixing up frames and causing jaggy
> playback.To
> > illustrate the case, her
On Wed, Jul 10, 2024 at 11:18 PM Mark Filipak
wrote:
> On 10/07/2024 13.51, Will Boba wrote:
> > On 7/10/24 10:26, Mark Filipak wrote:
> >> Three more tried.
> >>
> >> ffmpeg -forced-idr 1 -i ... -c:v libx264 -an -sn -start_at_zero
> -muxdelay 0 ...
> >> [in#0 @ 00542d00] Error opening in
On Sat, Jul 6, 2024 at 10:54 AM Michael Koch
wrote:
> Am 06.07.2024 um 10:44 schrieb Paul B Mahol:
> > On Sat, Jul 6, 2024 at 10:40 AM Michael Koch <
> astroelectro...@t-online.de>
> > wrote:
> >
> >> Does anybody have an idea how to make a noise gene
On Sat, Jul 6, 2024 at 10:40 AM Michael Koch
wrote:
> Does anybody have an idea how to make a noise generator for 360° video?
> I mean noise (clouds, waves) that looks similar in all directions of the
> sphere. If I use the new "perlin" source for making an equirectangular
> video, there are two
On Sat, Jul 6, 2024 at 9:23 AM Michael Koch
wrote:
> Hi,
>
> when I run this command, the output video has a green bar at the bottom
> when played with VLC player.
> But it plays fine with FFplay or PotPlayer . Is this a bug in FFmpeg or
> in VLC?
>
VLC
>
> ffmpeg -f lavfi -i color=gray:size=6
On Fri, Jul 5, 2024 at 7:29 PM Mark Filipak
wrote:
> On 05/07/2024 07.54, Paul B Mahol wrote:
> > On Fri, Jul 5, 2024 at 2:09 AM Mark Filipak
> > wrote:
> >
> >> On 04/07/2024 17.12, Paul B Mahol wrote:
> >>> Its in documentation: asetpts=N/SR/TB, ass
On Fri, Jul 5, 2024 at 2:09 AM Mark Filipak
wrote:
> On 04/07/2024 17.12, Paul B Mahol wrote:
> > Its in documentation: asetpts=N/SR/TB, assuming everything starts from 0,
> > so add it after each atrim.
>
> For both video & audio,
>time_base=1/9
>star
>
> > This is not a simple problem, eh?
> >
> > --Mark.
> >
> > On 04/07/2024 16.25, Mark Filipak wrote:
> >> On 04/07/2024 14.22, Paul B Mahol wrote:
> >>> On Thu, Jul 4, 2024 at 8:05 PM Mark Filipak <
> markfilipak.i...@gmail.com>
>
On Thu, Jul 4, 2024 at 10:44 PM Mark Filipak
wrote:
> On 04/07/2024 14.22, Paul B Mahol wrote:
> > On Thu, Jul 4, 2024 at 8:05 PM Mark Filipak
> > wrote:
> >
> >> Is there some secret to the trim filter?
> >>
> >> --filter_complex "split=
On Thu, Jul 4, 2024 at 8:05 PM Mark Filipak
wrote:
> Is there some secret to the trim filter?
>
> --filter_complex "split=2[i5][i6],
> [i5]trim=start_frame=481:end_frame=134047[o5],
> [i6]trim=start_frame=138745:end_frame=246719[o6],
> [o5][o6]concat=n=2"
>
> I get "dup=481", instead, and w
On Wed, Jul 3, 2024 at 9:49 AM Michael Koch
wrote:
> Am 30.06.2024 um 15:11 schrieb Bouke / edit 'B:
> >
> > Pfff, what a work…
> > I take it you only have to do this once?
> >
> > Why LibreOffice? (Seems like a sledgehammer, you can open a CSV with
> ‘any’ simple text editor.
> >
> > And if you
On Tue, Jul 2, 2024 at 6:44 PM Sachin Bhat wrote:
> I have combined the select filters using
> select='eq(pict_type\,I)*not(mod(n\,300))', however, I receive the same
> delay. I am wondering if the delay is caused by ffmpeg waiting for the
> first keyframe after the seek point to start outputting
On Tue, Jul 2, 2024 at 5:21 PM Sachin Bhat wrote:
> Hi,
>
> I have an input ts file that is at 30 fps, and a GOP of 10. I am trying to
> display keyframes at a specific time interval by sending a keyframe plus
> duplicates to a HW decoder until the next desired keyframe appears. .I am
> using dup
On Sun, Jun 30, 2024 at 12:12 AM Mark Filipak
wrote:
> On 29/06/2024 17.52, Paul B Mahol wrote:
> > On Sat, Jun 29, 2024 at 11:42 PM Mark Filipak <
> markfilipak.i...@gmail.com>
> > wrote:
>
> > If you listen only yourself and nobody else, you also are ignorant.
On Sat, Jun 29, 2024 at 11:42 PM Mark Filipak
wrote:
> On 29/06/2024 17.18, Oliver Fromme wrote:
> > Mark Filipak wrote:
> > > On 29/06/2024 16.28, Carl Zwanzig wrote:
> > > > On 6/29/2024 12:56 PM, Mark Filipak wrote:
> > > > > I did. That's why I decided not to use it.
> > > >
> > > >
On Sat, Jun 29, 2024 at 8:58 PM Carl Zwanzig wrote:
> On 6/28/2024 4:07 PM, Mark Filipak wrote:
> > I have to consider Blackmagic DaVinci Resolve to be a virus hub that is
> > probably selling access to my system through those ports to outside
> clients.
>
> You're welcome to consider it such, bu
On Fri, Jun 28, 2024 at 1:20 AM Richard Bartczak via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
>
> Am 28.06.24 um 00:52 schrieb Mark Filipak:
> > On 27/06/2024 17.55, Richard Bartczak via ffmpeg-user wrote:
> >>
> >> Am 27.06.24 um 22:39 schrieb Mark Filipak:
> >>> Hello All,
> >>>
> >>> I'm co
On Thu, Jun 27, 2024 at 2:02 PM Oliver Fromme wrote:
> Paul B Mahol wrote:
> > On Wed, Jun 26, 2024 at 11:43 PM Oliver Fromme
> wrote:
> > > I'm using ffmpeg for a long time, but I've just recently started to
> > > use it with 10bit HDR (HDR10) video.
On Thu, Jun 27, 2024 at 8:45 AM Michael Koch
wrote:
> Am 26.06.2024 um 23:43 schrieb Oliver Fromme:
> > Hi,
> >
> > I'm using ffmpeg for a long time, but I've just recently started to
> > use it with 10bit HDR (HDR10) video.
> >
> > So far I found out how to re-encode HDR10 video with libx265 and
On Wed, Jun 26, 2024 at 11:43 PM Oliver Fromme wrote:
> Hi,
>
> I'm using ffmpeg for a long time, but I've just recently started to
> use it with 10bit HDR (HDR10) video.
>
> So far I found out how to re-encode HDR10 video with libx265 and
> retain the HDR metadata. It's a bit complicated, but i
On Thu, Jun 27, 2024 at 12:26 AM Richard Bartczak via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> Am 26.06.24 um 23:43 schrieb Oliver Fromme:
> > Hi,
> >
> > I'm using ffmpeg for a long time, but I've just recently started to
> > use it with 10bit HDR (HDR10) video.
> >
> > So far I found out h
On Tue, Jun 25, 2024 at 9:23 PM Mark Filipak
wrote:
> On 25/06/2024 15.17, Paul B Mahol wrote:
> > On Tue, Jun 25, 2024 at 7:55 PM MacFH - C E Macfarlane - News <
> > n...@macfh.co.uk> wrote:
> >
> >> On 25/06/2024 18:28, Paul B Mahol wrote:
> >>
On Tue, Jun 25, 2024 at 7:55 PM MacFH - C E Macfarlane - News <
n...@macfh.co.uk> wrote:
> On 25/06/2024 18:28, Paul B Mahol wrote:
> >
> > On Tue, Jun 25, 2024 at 6:57 PM Mark Filipak >
> >>
> >> VirusTotal reports that Google, Sophos, and Ikarus
On Tue, Jun 25, 2024 at 6:57 PM Mark Filipak
wrote:
> On 25/06/2024 12.03, Paul B Mahol wrote:
> > On Tue, Jun 25, 2024 at 5:49 PM Mark Filipak >
> > wrote:
> >
> >> On 20/06/2024 03.30, Paul B Mahol wrote:
> >>> On Wed, Jun 19, 2024 at 11:25
On Tue, Jun 25, 2024 at 5:49 PM Mark Filipak
wrote:
> On 20/06/2024 03.30, Paul B Mahol wrote:
> > On Wed, Jun 19, 2024 at 11:25 PM Paul B Mahol wrote:
> >>
> >> https://www.jongbel.com/automated-validation/mpeg-2-video-validation/
> >
> > Mark, did you t
On Tue, Jun 25, 2024 at 5:52 PM Mark Filipak
wrote:
> https://trac.ffmpeg.org/ticket/11055#comment:173
>
>Ticket_11055.m2ts plays correctly and completely by two players that do
> not depend on FFmpeg.
>
>Ticket_11055.m2ts has 99 frames. All frames are listed correctly by
> framecrc.
>
>
On Tue, Jun 25, 2024 at 9:39 AM Michael Koch
wrote:
> Am 25.06.2024 um 08:53 schrieb Paul B Mahol:
> > On Tue, Jun 25, 2024 at 7:37 AM Michael Koch <
> astroelectro...@t-online.de>
> > wrote:
> >
> >> Are there any alternatives for visualizing an audio
On Tue, Jun 25, 2024 at 7:37 AM Michael Koch
wrote:
> Are there any alternatives for visualizing an audio waveform, like on an
> oscilloscope?
>
No, use Librempeg instead.
> The "showwaves" filter seems to be broken at the moment (ticket 11070).
> "showwavespic" has a different output where yo
On Fri, Jun 21, 2024 at 3:33 PM Bouke / edit 'B wrote:
> On 21 Jun 2024, at 15:25, Paul B Mahol wrote:
> >
> > Newer ffmpeg version needs for drawtext filter libharfbuz lib support to
> > get improved rendering.
>
> So why does that not show in the banner
On Fri, Jun 21, 2024 at 2:59 PM Bouke / Videotoolshed <
bo...@videotoolshed.com> wrote:
> On 21 Jun 2024, at 13:51, Paul B Mahol wrote:
> >
> >> That was my idea as well, however, it is in the list published for
> compile
> >> options, and another (older, work
On Fri, Jun 21, 2024 at 1:39 PM Bouke / edit 'B wrote:
>
> > On 21 Jun 2024, at 13:09, Paul B Mahol wrote:
> >
> > On Fri, Jun 21, 2024 at 12:28 PM Bouke / Videotoolshed <
> > bo...@videotoolshed.com> wrote:
> >
> >> My version (from
On Fri, Jun 21, 2024 at 12:28 PM Bouke / Videotoolshed <
bo...@videotoolshed.com> wrote:
> My version (from evermeet.cx)
> ffmpeg version 6.1.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c)
> 2000-2023 the FFmpeg developers
> built with Apple clang version 11.0.0 (clang-1100.0.33.17)
> co
On Wed, Jun 19, 2024 at 11:25 PM Paul B Mahol wrote:
>
>
> On Wed, Jun 19, 2024 at 10:43 PM Mark Filipak
> wrote:
>
>> On 19/06/2024 15.48, Jim DeLaHunt wrote:
>> > On 2024-06-19 10:25, Paul B Mahol wrote:
>> >
>> >> It could be ffmpe
On Wed, Jun 19, 2024 at 10:43 PM Mark Filipak
wrote:
> On 19/06/2024 15.48, Jim DeLaHunt wrote:
> > On 2024-06-19 10:25, Paul B Mahol wrote:
> >
> >> It could be ffmpeg libavformat m2ts demuxer bug. Get the m2ts stream
> >> inspector tool to confirm.
> >
&
On Wed, Jun 19, 2024 at 10:59 PM MacFH - C E Macfarlane - News <
n...@macfh.co.uk> wrote:
> Apologies to Jim DeLaHunt for initially replying to him directly rather
> than to the list as I had intended to do ...
>
> On 19/06/2024 20:48, Jim DeLaHunt wrote:
> >
> > On
On Wed, Jun 19, 2024 at 9:22 PM Mark Filipak
wrote:
> On 19/06/2024 14.48, Paul B Mahol wrote:
> > On Wed, Jun 19, 2024 at 7:43 PM Mark Filipak >
> > wrote:
> >
> >> On 19/06/2024 13.25, Paul B Mahol wrote:
> >> -snip-
> >>> It could be ff
On Wed, Jun 19, 2024 at 7:43 PM Mark Filipak
wrote:
> On 19/06/2024 13.25, Paul B Mahol wrote:
> -snip-
> > It could be ffmpeg libavformat m2ts demuxer bug. Get the m2ts stream
> > inspector tool to confirm.
>
> Thank you, Paul.
>
> I searched "m2ts" &a
On Wed, Jun 19, 2024 at 7:12 PM Mark Filipak
wrote:
> On 19/06/2024 13.07, Mark Filipak wrote:
> > Correction of first file name, sorry, copy goof.
> >
> > On 19/06/2024 12.45, Paul B Mahol wrote:
> >> ffmpeg -i Ticket_11055.m2ts -an -c copy -f framecrc broken.vid
On Wed, Jun 19, 2024 at 6:27 PM Mark Filipak
wrote:
> On 19/06/2024 12.02, Rob Hallam wrote:
> -snip-
> > I can confirm I see a pause at "23%", though mpv reports it as
> > 00:00:00 and then a seeming jump or fast increment through
> > percentages. I would probably have to record the screen or so
On Wed, Jun 19, 2024 at 6:15 PM 桃源老師 wrote:
> Hello,
>
> > 2024/06/20 午前1:07、Paul B Mahol のメール:
> >
> > On Wed, Jun 19, 2024 at 6:00 PM 桃源老師 wrote:
> >
> >> Wrong:
> >>
> >> similarity:0.02
> >>
> >> Correct:
> &
On Wed, Jun 19, 2024 at 6:00 PM 桃源老師 wrote:
> Hello,
>
>
> > 2024/06/19 午後7:03、Paul B Mahol のメール:
> >
> > Demo:
> >
> > ffmpeg -i https://media.xiph.org/video/derf/y4m/bowing_cif.y4m -vf
> "backgroundkey=threshold=0.2:similarity:0.02[v];color=s=c
On Wed, Jun 19, 2024 at 5:22 PM Mark Filipak
wrote:
> On 19/06/2024 10.01, Rob Hallam wrote:
> > On Wed, 19 Jun 2024 at 14:23, Mark Filipak
> wrote:
> >
> >> I think this may be a far ranging bug that affects '-ss' and that
> provokes many of the
> >> "non-monotonous DTS" error messages that see
On Wed, Jun 19, 2024 at 1:54 AM Erik Beck wrote:
> Hi all,
>
> I'm having conceptual issues using the backgroundkey filter.
>
> Is it intended to take a still image of a static background and remove
> it from a video stream? If so, I could use help with the filter syntax.
> If not, I need to be s
On Tue, Jun 18, 2024 at 12:00 AM Mark Filipak
wrote:
> On 17/06/2024 17.18, Paul B Mahol wrote:
> > On Mon, Jun 17, 2024 at 8:29 PM Mark Filipak >
> > wrote:
> >
> >> On 17/06/2024 13.50, Paul B Mahol wrote:
> >>> On Mon, Jun 17, 2024 at 5:35 P
On Mon, Jun 17, 2024 at 8:29 PM Mark Filipak
wrote:
> On 17/06/2024 13.50, Paul B Mahol wrote:
> > On Mon, Jun 17, 2024 at 5:35 PM Mark Filipak >
> > wrote:
> >
> >> On 17/06/2024 03.16, Paul B Mahol wrote:
> >>> On Mon, Jun 17, 2024 at 3:16 A
On Mon, Jun 17, 2024 at 5:35 PM Mark Filipak
wrote:
> On 17/06/2024 03.16, Paul B Mahol wrote:
> > On Mon, Jun 17, 2024 at 3:16 AM Mark Filipak >
> > wrote:
> >
> >> To expand on my idea:
> >>
> >> The video is this:
> >> I P B B P B
On Mon, Jun 17, 2024 at 3:16 AM Mark Filipak
wrote:
> To expand on my idea:
>
> The video is this:
> I P B B P B B P B B I P B B..
> I want to change it to this:
> I B B P B B P B B P I B B P..
>
If this is what I think it is, your are wasting your time.
Its nonsense to change order of encoded
oolshed.wetransfer.com/
>
> > On 16 Jun 2024, at 18:02, Reindl Harald wrote:
> >
> >
> >
> > Am 16.06.24 um 15:54 schrieb Phil Rhodes via ffmpeg-user:
> >> On Sunday 16 June 2024 at 13:56:33 BST, Paul B Mahol
> wrote:
> >>
> >>> Do
On Sun, Jun 16, 2024 at 1:51 PM Reindl Harald
wrote:
>
>
> Am 16.06.24 um 11:33 schrieb Binarus:
> > Yes, I am also impatient sometimes. And yes, I also have been very
> > disappointed by the FFMPEG community support; sometimes, I wasn't able
> > to get even the simplest explanations for question
On Sun, Jun 16, 2024 at 11:33 AM Binarus wrote:
> I really have to kick in here, although I have no clue regarding the
> internals of FFMPEG, and although 90% of it are a mystery to me, and
> although I have to admit that I didn't get yet how to use it properly (and
> probably never will get that
On Sun, Jun 16, 2024 at 10:19 AM Mark Filipak
wrote:
> On 16/06/2024 03.51, Jim DeLaHunt wrote:
> > On 2024-06-15 23:04, Mark Filipak wrote:
> >
> >> On 15/06/2024 23.39, Jim DeLaHunt wrote:
> >>> On 2024-06-15 19:27, Mark Filipak wrote:
> >>>
> It would be nice if folks from here went here:
On Sat, Jun 15, 2024 at 4:16 PM Carl Zwanzig wrote:
> On 6/15/2024 1:30 AM, Paul B Mahol wrote:
> > What you even mean with above unclear statements?
>
> Perhaps you might read the last 8-10 messages as Jim attempts to
> decipher it.
>
>
I was explicitly referring to r
On Sat, Jun 15, 2024 at 5:13 AM Mark Filipak
wrote:
> While I'm thinking of it, I want to share something. My impression is that
> FFmpegers think in
> input-output terms. You might want to think in physical terms: What is
> physically on the disk/in the
> stream, instead. Yeah, yeah, I know ever
On Tue, Jun 11, 2024 at 6:20 PM Mark Filipak
wrote:
> This is a spliced video.
>
> The Good:
> VLC and PowerDVD play it flawlessly. The splice is technically perfect.
> An MPEG-2 TS packet analyser says so. I trust what it says because what
> it says matches my cuts and it matches what '-f framec
On Sun, Jun 9, 2024 at 6:51 PM Media Mouth wrote:
> Following up on an earlier post "amix vs amerge / how to" but now testing
> on ffmpeg version 7.0.1
>
> The overall goal here is to learn how (if possible) to take source files
> with 10 - 20 audio channels and mixdown / assign those in various
On Sat, Jun 8, 2024 at 5:51 PM Mark Filipak
wrote:
> On 08/06/2024 11.48, Paul B Mahol wrote:
> > On Sat, Jun 8, 2024 at 5:07 PM Mark Filipak
> > wrote:
> >
> >> On 08/06/2024 05.29, Paul B Mahol wrote:
> >>
> >>> It is evident
On Sat, Jun 8, 2024 at 5:07 PM Mark Filipak
wrote:
> On 08/06/2024 05.29, Paul B Mahol wrote:
>
> > It is evident that you never looked at actual setts documentation.
>
> Don't be silly, Paul.
>
> Is there something wrong with this:
> -bsf
> noise=drop=
On Sat, Jun 8, 2024 at 8:36 AM Mark Filipak
wrote:
> '-bsf setts=pts' seems to always work, but '-bsf setts=dts' has problems.
> Look:
>
It is evident that you never looked at actual setts documentation.
# ffmpeg -h bsf=setts
ffmpeg version N-115950-g1f63f014ff Copyright (c) 2000-2024 the FFmpe
On Fri, Jun 7, 2024 at 5:55 AM Lee Mitchell wrote:
> Hi.
>
> What I know is alpha change for another video clip pon base video like as
> "-filter_complex
> "[1:v]geq=r='r(X,Y)':a='if(between(t,0,9),alpha(X,Y)*(T/9),0)'[alpha];"
> which works very well as time goes by.
>
> But it is not working fo
On Wed, Jun 5, 2024 at 6:00 PM Mark Filipak
wrote:
> On 05/06/2024 09.44, Paul B Mahol wrote:
> >
> > What is OFFmpeg ? and how to use it?
>
> It is Object-FFmpeg. It is a fully video-object-oriented language, not
> functions pasted into python.
>
> Objects ar
On Wed, Jun 5, 2024 at 3:47 AM Mark Filipak
wrote:
> For your reading pleasure, I've attached 'How To Make IDR Cuts.pdf'.
>
What is OFFmpeg ? and how to use it?
> --Mark.
> ___
> ffmpeg-user mailing list
> ffmpeg-user@ffmpeg.org
> https://ffmpeg.org/
On Mon, Jun 3, 2024 at 7:19 PM Mark Filipak
wrote:
> With something a complicated as this stuff, I knew I would screw up
> something. Correction: I fixed
> the 'Commands used'.
>
>
> Hey,
>
> My cuts are perfect, true IDR. The join is perfect, yet MPV stalls for
> about 1/2 second and shows
> one
On Mon, Jun 3, 2024 at 3:30 PM Lee Mitchell wrote:
> Hi, Paul.
>
> First, thanks for the advice.
> Erm..thing is that I totally don't understand what you are saying as dumb.
> You mean, the expression should be...
> [1:v]geq=r='r(X,Y)':a='if(between(t\,0\,9),alpha(X,Y),0)'[alpha]; ?? which
> is n
On Mon, Jun 3, 2024 at 8:23 AM Lee Mitchell wrote:
> Hi.
>
> There are RGBA support qtrle video clips that have no problem with alpha
> support.
>
> I'd like to overlay a video on top of base one, and want to change the
> transparency while playing
> like
> "[1:v]alpha='if(between(t,0,10),(1-(t/1
On Mon, Jun 3, 2024 at 8:18 AM Lee Mitchell wrote:
> Hi.
>
> When I use filter_complex syntax below, I get an error that cannot proceed.
> "-filter_complex
> "[1:v]geq=r='r(X,Y)':a='if(between(t,0,9),alpha(X,Y),0)'[alpha];"
> then
> " Unknown function in 't,0,9),alpha(X,Y),0)'"
> Seems geq filter
Where is sample?
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On Fri, May 31, 2024 at 6:48 PM Sean Grider via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> I'm trying to use ffmpeg to find timestamps of a video where a given
> screenshot can be found.
>
> Let's say of 30m video, there's a title card at 00:07:00, so I extract
> that frame as an image with:
>
On Fri, May 31, 2024 at 5:18 PM bbb wrote:
> On 5/31/24 17:10, Reindl Harald wrote:
> >
> >
> > Am 31.05.24 um 15:50 schrieb bbb:
> >> On 5/31/24 15:16, Reindl Harald wrote:
> >>> your command is very unspecific to begin with
> >>> even profile is missing
> >>>
> >>> https://trac.ffmpeg.org/wiki/
Compare encoder settings between files encoded with different versions.
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Same can be done with ebur128 + volume, and several times faster.
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On Fri, May 24, 2024 at 1:12 AM Zathras Yes
wrote:
> Hi,
>
> as i have mentioned to Mr. Reindl, the online-converter
> https://www.freeconvert.com/wav-to-mov does the trick.
>
> ffmpeg should be able to do the same, I suppose.
> May be, I am in error, may be not...
>
> 1. make a wav-files (16 Bi
> --
> DE fbdev Linux framebuffer
> D lavfi Libavfilter virtual input device
> DE oss OSS (Open Sound System) playback
> DE video4linux2,v4l2 Video4Linux2 output device
> D x11grab X11 screen capture, using XCB
>
> On 22/05/24 12:38 pm, Paul
what ffmpeg -devices show ?:
ffmpeg -devices
What is the full CLI command you use?
On 22/05/24 12:22 pm, Paul B Mahol wrote:
>
>
>
> On Wed, May 22, 2024 at 6:34 AM Nikhil via ffmpeg-user <
> ffmpeg-user@ffmpeg.org> wrote:
>
>> I need to capture mipi c
On Wed, May 22, 2024 at 6:34 AM Nikhil via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> I need to capture mipi csi camera play, im facing the below errors
>
>
> ffmpeg version n4.2.9-106-g1076d3[ 7169.409991] unknown
> pixelformat:'YU12' 1485 Copyright (c) 2000-2023 the [ 7169.414184]
> mx6s-csi
On Tue, May 21, 2024 at 10:52 AM Mark Filipak
wrote:
> Attachments:
> 1. original ebur128.jpg
> 2. loudnorm-thresh=-85 pan ebur128.jpg
> 3. what I want ebur128.jpg
>
> ___1. The original
> has a 'shelf' just below LU = -13. That's soft speech.
> The peak is at LU = +9. That's shouting.
> So the t
On Tue, May 21, 2024 at 6:13 AM Mark Filipak
wrote:
> I've attached ebur128.jpg. It's only 37 k-bytes.
>
> Do you see that first 'shelf' just below LU = -13? I want to boost that
> the most by percent, maybe
> double the power (3 dB). I want to boost LU = 9 not at all, and I want to
> boost every
On Tue, May 21, 2024 at 2:01 AM Mark Filipak
wrote:
> On 20/05/2024 14.09, Moritz Barsnick via ffmpeg-user wrote:
> > On Mon, May 20, 2024 at 13:14:43 -0400, Mark Filipak wrote:
> >> Doesn't work:
> >> ffmpeg -i c:\source.mp4 -map 0 -af abitscope -c:v libx265 -x265-params
> >> crf=18 -c:a ac3 -sn
On Sun, May 19, 2024 at 7:02 PM Steven Kan wrote:
> I have a series of 476 PNGs, exported from Excel in a loop through a
> series of values to control the plotted range:
>
> https://www.kan.org/download/1.png
> https://www.kan.org/download/2.png
> https://www.kan.org/download/3.png
> https://www.
On Sun, May 5, 2024 at 11:30 AM Enrico Palmeri via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> Hi, I normallyuse Ffmpeg to cut and join AAC audio files with concat and
> SS copy commands. These commands work with general mp4 file container
> and .mp4 file extension only. Most of the mp4 files c
On Thu, Apr 25, 2024 at 6:21 AM Steven Kan wrote:
>
> > Thanks! This works, and I agree that it’s better than using the filename:
> >
> > ffmpeg -pattern_type glob -i '*.jpg' -vf
> "drawtext=text='%{metadata\\:DateTimeOriginal}':
> fontfile=/System/Library/Fonts/Helvetica.ttc:fontcolor=white: fon
On Wed, Apr 3, 2024 at 6:10 AM Mark Filipak
wrote:
> Dear Developers,
>
> Thank you for adding 'pkt_dts' and 'pict_type' to '-show_frames'. Those
> will make things easier.
> Now, could you fix it?
>
> '-show_frames' shows pts < dts.
>
> frames.frame.133975.pts=503957216 <-+ These are actual
On Tue, Mar 26, 2024 at 10:07 AM Bouke / edit 'B wrote:
>
> > On 26 Mar 2024, at 09:57, computermaster360
> wrote:
> >
> > I want to loop a short wav sample, which is an 8-bar melody:
> >
> >ffplay -loop 0 sample.wav
> >
> > There is a small, but perceptible delay between individual playback
On Mon, Mar 25, 2024 at 12:54 AM Laine Lee wrote:
>
>
> > On Mar 24, 2024, at 5:31 PM, Bo Berglund wrote:
> >
> > I know how to use ffmpeg to adjust the video/audio sync and that is a
> real
> > simple command not requiring any remuxing or such. This is what I use in
> my
> > audiosync script a
On Sun, Mar 24, 2024 at 10:58 AM Marc via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> I spent some time looking into options and came across this paper by the
> authors of pyloudnorm.
> There's also a section comparing a few different implementations of EBU
> R 128.
>
> https://csteinmetz1.gith
On Sat, Mar 23, 2024 at 8:01 PM Carl Zwanzig wrote:
> On 3/23/2024 11:06 AM, Paul B Mahol wrote:
> > loudnorm is low quality filter, do not use it.
>
> What do you suggest instead?
>
For dual-pass:
ebur128(+true_peak on) + volume filter from numbers reported by ebur128
loudnorm is low quality filter, do not use it.
My attempts to rewrite it were rejected.
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On Fri, Mar 8, 2024 at 12:48 PM Joanna White
wrote:
> Good morning,
>
> Here at the BFI National Archive I have MP4 transcode scripts which handle
> many different AV source files, converting them into derivative access
> copies, generally mapping two streams of audio to the MP4. Many source
> fi
On Sat, Feb 24, 2024 at 9:48 PM Bernd Butscheidt via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> Hello,
>
> trying out some equalizer settings, I stepped over this part in the
> documentation of ffmpeg describing the firequalizer filter:
>
> "multi
> Enable multichannels evaluation on g
On Sat, Feb 24, 2024 at 3:26 PM Bouke / Videotoolshed <
bo...@videotoolshed.com> wrote:
> On 24 Feb 2024, at 12:37, Paul B Mahol wrote:
> >
> > On Sat, Feb 24, 2024 at 11:33 AM Bouke / Videotoolshed <
> > bo...@videotoolshed.com> wrote:
> >
> >>
On Sat, Feb 24, 2024 at 11:33 AM Bouke / Videotoolshed <
bo...@videotoolshed.com> wrote:
> Trying to split a 64 channel 48Khz 24 bits Wave file.
> That is VERY slow.
>
> ffmpeg -i /Volumes/Data/magweg/64channel.wav -filter_complex
> "[0]pan=mono|c0=c0[tr0]" -c:a pcm_s24le -map "[tr0]"
> /Volumes/D
On Thu, Feb 22, 2024 at 10:02 AM Nicolas Gaullier
wrote:
> >De : ffmpeg-user De la part de
> Zhengrong Zang
> >Envoyé : mercredi 21 février 2024 01:53
> >À : FFmpeg user questions
> >Objet : Re: [FFmpeg-user] ffprobe can’t show ts file information
> >
> >I am not sure if they are corrupt, is th
On Wed, Feb 21, 2024 at 10:12 AM Mark Filipak
wrote:
> Gyan, Paul, Devin, Jim, anyone. Help!
>
> You folks have been following my trim+concat adventure. I think I may have
> found the problem, not
> just for me. It's a general problem.
>
> "N" signifies one frame time. All times are relative to p
On Mon, Feb 19, 2024 at 6:47 PM Mark Filipak
wrote:
> On 19/02/2024 01.16, Greg Oliver wrote:
> > I usually do not chime in on your emails where people flame you for
> writing
> > a book or being a troll because I usually learn something from the
> > discussions.
>
> Hi Greg. I'm not writing a bo
When trimming packets and later concatenating packets, ensure that no
packets that are not trimmed from stream of packets and thus are still part
of final file depend on any frame from any dropped/removed stream of
packets for correct glitch-free decoding.
Also ensure that there is no dangling pac
On Wed, Feb 14, 2024 at 4:51 PM Mark Filipak
wrote:
> Can anyone suggest a way to delete the marked packets?
>
>0: video, 1: audio
> / DTS PTSticksbytes packet_CRC
> 1,2798640,2798640, 960, 60, 0xec16103f <==
> : 48 more
On Wed, Feb 14, 2024 at 3:11 AM Mark Filipak
wrote:
> On 13/02/2024 20.27, amindfv--- via ffmpeg-user wrote:
> >>> params *before* "-i" are *input params*
> >>> params *after* "-i" are *output params*
> >>>
> >>> that has *always* been the case at least for 15 years and so it's
> >>> logical that
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