[Cin] Assertion fctx->async_lock failed at libavcodec/pthread_frame.c:155

[Andrew Randrianasulu]

Lets create another thread for this specific problem....

Because it hit me randomly on file load :/

cinelerra git log top:

commit fb3e53778e49a406768506de9bf8edfd3d4c36e6 (HEAD -> master)
Author: Good Guy <good1.2guy at gmail.com>
Date:   Sat Apr 25 19:41:57 2020 -0600

    split resource_thread update into separate audio/video threads, boxblur layout tweaks

ffmpeg git log top:


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


Configure line:

LDFLAGS=-L/usr/X11R7/lib setarch i686 ./configure --prefix=/usr --with-git-ffmpeg=https://git.ffmpeg.org/ffmpeg.git --sysconfdir=/etc --localstatedir=/var --libdir=/usr/lib --with-ladspa-build --with-opus --with-nv --enable-opus --with-jobs=4 --with-booby --build=i486-slackware-linux build_alias=i486-slackware-linux CC="ccache gcc" CFLAGS="-O3 -march=i686 -mtune=i686 -D__STDC_CONSTANT_MACROS" LDFLAGS="-L/usr/X11R7/lib -ldl -L/usr/lib" CXX=clang++ CXXFLAGS="-O3 -march=i686 -mtune=i686 -D__STDC_CONSTANT_MACROS" --no-create --no-recursion --with-commercial  

yeah, quite aggressive, I know ....

Action:
1) open program
1.1) Set load strategy to 'Create resources only'
2) try to load my KARA... .mkv file ('O' then navigate to folder where file is
 and the doubleclick on it - only resource should appear, timeline still in default state - 3 tracks,
one for video, 2 for audio)
3) drag file from Resources on timeline.
If it loads correctly - undo loading, and try again.
Eventually it will hit this assert.

terminal output

guest at slax:/dev/shm/tmp/cinelerra-goodguy-20200607/cinelerra-5.1/bin$ ./cin
Cinelerra Infinity - built: Jun 13 2020 04:36:31
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
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
FFMPEG::open_decoder: some stream times estimated: /home/guest/New_hdd/KARA (Quantic Dream) [HD]-wxVyeSfE6p8.mkv
Assertion fctx->async_lock failed at libavcodec/pthread_frame.c:155
Аварийный останов

guest at slax:/dev/shm/tmp/cinelerra-goodguy-20200607/cinelerra-5.1/bin$               

Thing is, I was unable to make it assert with ffmpeg.patch provided :/ (on very same sw and hw)
may be patch slows down all those threading operation enough for assertion to be avoided ?