Bug 503727 - For couple weeks mpv doesn't work - Segmentation fault
Summary: For couple weeks mpv doesn't work - Segmentation fault
Status: REPORTED
Alias: None
Product: neon
Classification: KDE Neon
Component: general (other bugs)
Version First Reported In: unspecified
Platform: Neon Linux
: NOR crash
Target Milestone: ---
Assignee: Neon Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-05-03 22:44 UTC by Piotr Mierzwinski
Modified: 2025-07-19 22:57 UTC (History)
6 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


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Description Piotr Mierzwinski 2025-05-03 22:44:35 UTC
SUMMARY
When I try to start mpv with any mp4 movie happens crash. Example

mpv my_movie.mp4 
[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: Referenced QT chapter track not found
 (+) Video --vid=1 (*) (h264 1920x1036 24.000fps)
 (+) Audio --aid=1 (*) (aac 6ch 48000Hz)
 (+) Subs  --sid=1 'my_movie.srt' (subrip) (external)
Segmentation fault (core dumped)

Please notice that in Arch Linux mpv works correctly with the same movie.

STEPS TO REPRODUCE
1. Try to play any mp4 movie
2. 
3. 

OBSERVED RESULT
Segmentation fault (core dumped)

EXPECTED RESULT
mpv should play movie, like it happens couple weeks ago

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
KDE Plasma Version: 5.3.80
KDE Frameworks Version: 6.14.0
Qt Version: 6.8.3

ADDITIONAL INFORMATION
mpv --version
mpv 0.37.0 Copyright © 2000-2023 mpv/MPlayer/mplayer2 projects
libplacebo version: v6.338.2
FFmpeg version: 6.1.1-3ubuntu5
FFmpeg library versions:
   libavutil       58.29.100
   libavcodec      60.31.102
   libavformat     60.16.100
   libswscale      7.5.100
   libavfilter     9.12.100
   libswresample   4.12.100
Comment 1 Piotr Mierzwinski 2025-05-21 20:52:54 UTC
Sorry, is there any chance that someone will look at it and fix?
Just kindly remind that smplayer stopped work long time ago, and recently (couple weeks ago) also mpv.
Comment 2 Piotr Mierzwinski 2025-06-07 23:01:21 UTC
Below please find a bit more details:

In case of: (h264 1920x960 24.000fps), (hevc 1920x800 24.000fps) happens segmentation fault
In case of: (mpeg4 720x384 24.000fps) works well
Produced core is between 13 - 20MB (compressed - zst format). If this will help I can attach.

BTW. mplayer (1.5+svn38446-1build5) is able to play all of above.
Comment 3 Giva Barreto 2025-06-24 22:36:03 UTC
To me it works if I start mpv with no hardware acceleration, with --hwdec=no parameter.
Comment 4 Nicolas Fella 2025-07-11 19:42:44 UTC
Please report this to mpv
Comment 5 Piotr Mierzwinski 2025-07-19 22:54:40 UTC
(In reply to Nicolas Fella from comment #4)
> Please report this to mpv

Hmm,  I'm not sure this is issue in mpv side. Please notice that the same version was working for me couple months ago before I reported this issue. I checked logs and found that version 0.37 was first time installed at Dec, 2nd 2023:
$ apt changelog mpv
</cut>
mpv (0.37.0-1) unstable; urgency=medium

  * New upstream version 0.37.0
  * debian/patches: Refresh patches
  * debian/libmpv2.symbols: Add new symbol
  * debian/docs: Update list of installed documentation
  * debian/control:
    - Add libcdio-dev to BDs
    - Bump required libplacebo-dev BD
    - Switch to pkgconf

 -- Sebastian Ramacher <sramacher@debian.org>  Sat, 02 Dec 2023 12:30:21 +0100
</cut>

Today we have in Neon is still the same version. For sure mpv was working for me at 2024 year, but stopped at the first half of 2025. I'm not sure what changed in between that time.
<cut>
$ apt show mpv
Package: mpv
Version: 0.37.0-1ubuntu4
</cut>

Second thing
Why mpv is not updated to the latest version? Only is installed 2 years old version? I wonder what is the problem with update?
In Arch Linux we can find ver. 0.40, what was released at March, 2025.
Comment 6 Piotr Mierzwinski 2025-07-19 22:57:48 UTC
(In reply to Giva Barreto from comment #3)
> To me it works if I start mpv with no hardware acceleration, with --hwdec=no
> parameter.

Thanks for tip. Also for me works.
The thing is why it stopped work without this parameter in this year, whereas the version didn't change (and also I didn't change hardware only I made updates of Neon)
BTW. I have integrated Intel GPU: "TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)"