[Cin] Hang on trimming audio tracks?

[Andrew Randrianasulu]

I think I bisected Cin itself a bit,
it was NOT hitting this assertion in 

commit 579c1a612dbb807fadfaa1100e461e14de220cbb (tag: 2020-03, refs/bisect/good-579c1a612dbb807fadfaa1100e461e14de220cbb)
Author: Good Guy <good1.2guy at gmail.com>
Date:   Tue Mar 31 15:13:56 2020 -0600

    version update, boxblur tweak


and also up to

commit de541aa9508555c35ea284d5b03617fc9c7cd026 (HEAD -> master)
Author: Good Guy <good1.2guy at gmail.com>
Date:   Fri Apr 24 21:58:19 2020 -0600

    resourcethread redraw speedup/fixes, replace vectorscope graticule IQ


so, probably threaded a/v drawing ("split resource_thread update into separate audio/video threads, boxblur layout tweaks") 
on timeline introduced this bug?

Even at  de541aa9508555c35ea284d5b03617fc9c7cd026
I still get my hang-at-deleting portion of 1video/2audio tracks,
UNLESS I disable playback for all tracks first (may this be done automatically?)

Also, I think mkv reloading can be done automatically, too (due to broken index/track thumbnails on first load,
"z + shift Z" - undo/redo fixes this  fast ... I think if root case of this bug can't be identified this automatic workaround
will prevent users from thinking their file or Cin are broken ...)

Latest tests done with ffmpeg.git at 

commit 38737b3d4e03e2a089083e38cd1fd6f9b4c3ddfd (HEAD -> master, origin/master, origin/HEAD)
Author: Steven Liu <lq at chinaffmpeg.org>
Date:   Fri Jun 12 14:30:02 2020 +0800

    mailmap: add entry for myself

I also noticed ffmpeg 4.3 now branched .....
https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/refs/heads/release/4.3

but not released yet ....


В сообщении от Sunday 07 June 2020 06:20:45 Phyllis Smith написал(а):
> Today gg was able to get the error of:    Assertion fctx->async_lock failed
> at libavcodec/pthread_frame.c:155
> by using the ffmpeg version from GIT.  The error is not in the ffmpeg
> version used with the static tar builds for Cinelerra.  He has determined
> that this is a bug in the new ffmpeg on the website in conjunction with
> Cinelerra.  So anyone using the non-provided ffmpeg on their Operating
> System that has this current GIT version with Cinelerra could potentially
> have this error.  At some point in time when Cinelerra upgrades to this
> ffmpeg version, a patch will have to be generated to avoid the error.
> 
> So thanks to Andrew for this early warning so we can be prepared for it.

[skipped]

> >
> > Once I got
> >
> > cin
> > Cinelerra Infinity - built: Jun  3 2020 09:43:41
> > git://git.cinelerra-gg.org/goodguy/cinelerra.git
> > (c) 2006-2019 Heroine Virtual Ltd. by Adam Williams
> > 2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy
> > Cinelerra is free software, covered by the GNU General Public License,
> > and you are welcome to change it and/or distribute copies of it under
> > certain conditions. There is absolutely no warranty for Cinelerra.
> >
> > RenderFarmClient::main_loop: client started
> > FileSystem::update /home/guest/MLP FIM 3 Karusel Нет такого файла или
> > каталога
> > FileSystem::update /home/guest/MLP FIM 4 Gala Нет такого файла или каталога
> > FileSystem::update /home/guest/MLP_FIM_Season4 Нет такого файла или
> > каталога
> > FileSystem::update /home/guest/MLP FIM 5 RUS ENG 720p Нет такого файла или
> > каталога
> > FileSystem::update /home/guest/My Little Pony - Friendship is Magic S02
> > 720p Нет такого файла или каталога
> > FileSystem::update /home/guest/MLP FIM 1 Karusel Нет такого файла или
> > каталога
> > Assertion fctx->async_lock failed at libavcodec/pthread_frame.c:155
> > Аварийный останов
> >
> >
> >
> > but this may be due to ffmpeg from git.. ...
> >
> > I can try to recompile CinGG with ffmpeg 4.2, but it will take some time
> >
> > I also tried few previous version of CinGG
> >  from May and they also hang on those files if I repeat same actions
> >
> > I can workaround this by trimming audio before
> > adding video, but then edit will be unprescie ...
> > --
> > Cin mailing list
> > Cin at lists.cinelerra-gg.org
> > https://lists.cinelerra-gg.org/mailman/listinfo/cin
> >
>