On Wed, Nov 6, 2024 at 11:08 AM Stuart Robinson
wrote:
>
> As in the title I am wondering if it is possible to record all inputs from
> my focusrite to separate mono tracks.
>
> ffmpeg -sources dshow
>
> just shows
>
> [analogue 1 + 2 (audio)]
>
> despite the device having 18 inputs (I don't care
On Wed, Nov 6, 2024 at 2:45 PM Stuart Robinson
wrote:
>
> > As in the title I am wondering if it is possible to record all inputs
> from
> > my focusrite to separate mono tracks.
> >
> > ffmpeg -sources dshow
> >
> > just shows
> >
> > [analogue 1 + 2 (audio)]
> >
> > despite the device having 18
On Sat, Oct 26, 2024 at 2:15 PM Oliver Fromme wrote:
> I've got a question for the experts ...
>
> So far I have successfully used zscale for scaling HDR video,
> because it is supposed to be better suited for HDR than the
> regular scale filter.
>
> However, I'm now in a situation where I need t
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
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