Sebastian Ramacher wrote at about 19:19:42 +0200 on Saturday, June 8, 2024:
> Control: found -1 5.1.4-0+deb12u1
> Control: notfound -1 5.1.4-0
> Control: tags -1 moreinfo
>
> On 2024-06-07 15:03:56 +0000, debian-b...@kosowsky.org wrote:
> > Package: ffmpeg
> > Version: 5.1.4-0
> > Release: Bookworm
> >
> > ffmpeg terminates (without error) after a couple of frames when trying
> > to download, copy or transcode an HLS/fMP4 stream.
> > HOWEVER, the same ffmpeg command lines work fine on HLS/TS streams.
> >
> > I am generating the streams using the program `go2rtc` on an RPi5
> >
> > Note that the problem seems to be *specific* to Debian Bookworm.
> >
> > Specifically the same HLS/fMP4 stream and ffmeg command lines:
> > - Fail on:
> > x86/Debian/Bookworm - ffmpeg 5.1.4
> > RPi5/Bookworm - ffmpeg 5.1.4
> >
> > - Succeed on:
> > RPi4/Buster - ffmpeg 4.1.11
> > x86/Debian/Bullseye - ffmpeg 4.3.6
> > x86/Debian/Trixie - ffmpeg 6.1.1
> >
> > x86/Ubuntu 18.04 - ffmpeg 3.4.11
> > x86/Ubuntu 22:04 - ffmpeg 4.4.2
> > x86/Ubuntu 24:04 - ffmpeg 6.1.1
> > Win11/Cygwin - ffmpeg 4.0.2
> >
> > i.e., versions (on multiple platforms) before and after 5.1.4 succeed.
> >
> > Using even this simple line fails where the stream is HLS/fMP4
> > # ffmpeg -re -i "http://mypi:1984/api/stream.m3u8?src=picam_h264&mp4";
> > output.m3u8
> > But succeeds when the stream is HLS/TS
> > # ffmpeg -re -i "http://mypi:1984/api/stream.m3u8?src=picam_h264";
> > output.m3u8
> >
> > Any ideas on what is "special" about Bookworm/ffmpeg-5.1.4 that fails
> > but just about any other version seems to succeed
>
> Without a test stream to check, no. We'd need someway to reproduce the
> issue.
>
> Cheers
> --
> Sebastian Ramacher
I need to figure out how to get a test stream set up..
Is it possible to set up a private stream as I would prefer not to
expose my stream to the world :)
Meanwhile, while running as `-loglevel trace`, I noticed one
potentially interesting difference.
For *broken* ffmpeg version 5.1.4 and 6.0.1 there was a trace line:
Probing mp3 score:1 size:2048
This trace line was *not* present for *working* versions both before
and after these broken version:
(before) 3.4.11, 4.0.2 4.1.11
(after) 6.1.1, 7.0
So wondering whether this could be the issue
More generally if I grep for 'probing'
Broken versions:
Probing hls score:100 size:93
Probing mov,mp4,m4a,3gp,3g2,mj2 score:100 size:2048
Probing mp3 score:1 size:2048
Good versions:
Probing hls score:100 size:93
Probing mov,mp4,m4a,3gp,3g2,mj2 score:100 size:2048
Do you think this is connected?
