I have a png file and a MP4 file.
I want to let that png file be a subtitle track and add the subtitle track
to a mp4 file.
What should I do?
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Can you share your mp4 file generated by subler, i have no apple computer.
On Fri, Jun 10, 2022 at 5:59 AM Robin van der Linden via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> Hello.
>
> I'm using ffprobe to import video information into my database using
> python. In general, this process is
>
> screenshot:
> [image: 1.png]
>
[image: 2.png]
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my operating system is ubuntu-22.04-desktop-amd64.iso
bash script file is 'compile.sh'. content of the file is bellow:
#!/bin/bash
## set some flags
DEBUG_FLAG='--extra-cflags="-g -O0" --extra-cxxflags="-g -O0"'
CC="gcc" CXX="g++" LD="ld" AR="ar" CCAS="gcc -c
my application code will call some ffmpeg api.
here is my code which call ffmpeg api:
printf("pts %s\n", av_ts2timestr(packet.pts, stream->time_base));
error when compiled:
ffmpeg/include/libavutil/timestamp.h:76:83: error: taking address of
temporary array
#define av_ts2timestr(ts, tb)
av_ts_ma
have a file which contains hevc and g711. when i run ffplay, it doesn't
recognize the g711 encoding. can i force ffplay to decode with g711 audio
coder?
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thanks
On Thu, May 19, 2022 at 10:18 AM Andriy Gelman
wrote:
> Hi,
>
> The password reset link should be working now.
>
> Andriy
>
> On Wed, 18 May 2022 at 20:07, Bang He wrote:
>
> > dear all.
> > ___
> >
dear all.
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need some post-filter?
On Mon, May 16, 2022 at 8:22 PM wrote:
>
> Hi
>
> I need to extract frames from video (2 frames per second) but I need to
> write the exact time of capture of frames
> Eg the video starts at 14:05:10 and because fps is 2 I expect 2 picture
> with time 14:05:10.000 14:05:1
-f mp4: file format/container is mp4
-f h264: file format is h264, even if the file extension is mp4
On Sun, May 15, 2022 at 10:58 AM Roger wrote:
> >MP4 can contain a variety of streams, including h264. If you specify h264,
> >you just have a raw h264 video stream, that's it.
>
> I've always u
hi all
it seems avsynctest filter is helpful on my job. can you demo some command
line?
thanks.
On Tue, Apr 19, 2022 at 5:10 PM Michael Koch
wrote:
> Hello,
>
> it's unclear how the new "avsynctest" source is expected to work. The
> most simple command line
>
> ffmpeg -f lavfi -i avsynctest=d=5
hwo to run it
On Wed, Mar 30, 2022 at 7:53 PM Paul B Mahol wrote:
> Hello,
>
> I would like to inform you about the new tool, located here:
>
> https://github.com/richardpl/lavfi-preview
>
> It is GUI filtergraph editor and foremost ffmpeg's libavfilter filtergraph
> preview tool.
>
> It is in e
what is your meaning of 'repeat '?
On Thu, Apr 21, 2022 at 10:29 PM mikelee164396
wrote:
> I want to extract all the pictures in an mp4 video file , but don't repeat
> it. How to implement it with ffmpeg?
>
>
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why do you use nut format? i think that is not popular.
On Sat, Apr 23, 2022 at 7:06 AM ramon wrote:
> You were right, there is no memory leak in the showvolume. Vagrind does not
> detect memory leaks and graphmonitor oscillates in green colour between 1
> and 2 in the queue.
> The problem I see
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