parser not found for codec av1, packets or times may be invalid

[nick_dimitrov]

I compiled mplayer subversion 38214
There is a choppy video playback with an AV1 codec, similar to stop motion animation.
How can I deal with this problem?
Thanks.
I attach 3 megabytes of the video file and the output from:
mplayer -v options filename > mplayer.log 2>&1
When using xv,vdpau,gl_tiled,x11the problem is the same.

choppy_video_playback.zip
​https://drive.google.com/file/d/1peA91mHNNTqtr29qZBG6XlNHji0gJ0YP/view?usp=sharing

xv_mplayer.log
​https://drive.google.com/file/d/1eWRFO5U8tATmcwnXt8bdPdIDo1V7EZXb/view?usp=sharing

I downloaded the video file here:
​https://www.elecard.com/videos

[nick_dimitrov]

I made a deb package on the mplayer subversion 38214.
​https://drive.google.com/file/d/1JmwM16My_fA0MYR2p-lER-gHnQYD37GK/view?usp=sharing
Can anyone test it and tell me where I'm wrong.
The package is created and will work on Ubuntu 18, Linux Mint 19 or Ubuntu based distribution with GLIBC 2.27
ldd --version
Poor video playback with av1 codec is obtained.
Everything else works.
Thanks!
I realized that the problem is not in the parser,I guess maybe in libavcodec library.

[reimar]

There is a patch on the mailing list now (needs to be combined with an earlier patch also on the ML).
I'm not sure it's 100% smooth, and the "parser not found" message is a bit strange, not sure if there is still something to be done on FFmpeg side.
Ideally you could test with either that patch of ffplay from FFmpeg to see if it looks good then.
But note that your CPU usage also is quite high, so even after the fixes you might need to optimize things a bit, e.g. enable multithreaded decoding with -lavdopts threads=4 or so.

[nick_dimitrov]

Thanks for your inclusion and your comment!
Some time ago I tested version 4.3.1 on ffplay.
I have some notes on my blog.
​https://nikdimnfo.blogspot.com/2019/07/ffplay-static-music-video-with-subtitles.html
But now I have to compile it with hardware acceleration support if possible.

Everything I've written so far I've tested on Ubuntu 18.4.

About the parser a few more words...
This is a result of the ffmpeg version that is downloaded with the subversion 38214 of the mplayer:

nick@nick:~/mplayer/ffmpeg$ ./configure --list-parsers

aac                     dvdsub                  opus
aac_latm                flac                    png
ac3                     g723_1                  pnm
adx                     g729                    rv30
av1                     gif                     rv40
avs2                    gsm                     sbc
avs3                    h261                    sipr
bmp                     h263                    tak
cavsvideo               h264                    vc1
cook                    hevc                    vorbis
dca                     ipu                     vp3
dirac                   jpeg2000                vp8
dnxhd                   mjpeg                   vp9
dpx                     mlp                     webp
dvaudio                 mpeg4video              xma
dvbsub                  mpegaudio
dvd_nav                 mpegvideo

When trying to compile a Mplayer with an option...
mplayer configure options:
--enable-parser=PARSER enable specified FFmpeg parser
--enable-parser=av1

The result:
I get the following error:

In file included from libavcodec/parsers.c:76:0:
./libavcodec/parser_list.c:51:6: error: 'ff_av1' undeclared here (not in a function); did you mean 'ff_ctz'?
     &ff_av1,
      ^~~~~~
      ff_ctz
libavcodec/parsers.c: In function 'av_register_codec_parser':
libavcodec/parsers.c:102:46: warning: unused parameter 'parser' [-Wunused-parameter]
 void av_register_codec_parser(AVCodecParser *parser)
                                              ^~~~~~
ffbuild/common.mak:67: recipe for target 'libavcodec/parsers.o' failed
make[3]: *** [libavcodec/parsers.o] Error 1
make[3]: *** Waiting for unfinished jobs.... 

The gui version of the mplayer has an option that solves the problem
"use non-interleaved parser"
Otherwise, the action in the film unfolds at a rapid pace.

[reimar]

The parser warning is now also fixed, but as far as I could tell that did not actually make any difference, the previously mentioned patch made the difference.
I think playback is fixed, at least as far as I can tell.