[FFmpeg-trac] #7456(avcodec:new): aomdec decodes video faster than libaom-av1 decoder in ffmpeg

FFmpeg trac at avcodec.org
Tue Sep 25 12:11:17 EEST 2018


#7456: aomdec decodes video faster than libaom-av1 decoder in ffmpeg
------------------------------------+-----------------------------------
             Reporter:  kagami      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  libaom      |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+-----------------------------------

Comment (by kagami):

 Yes, timing is about the same:

 {{{
 $ time ./ffmpeg -i dua.ivf -nostats -f null -
 ffmpeg version N-92054-ga7429d853d Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 8.2.0 (Gentoo 8.2.0-r2 p1.2)
   configuration: --enable-libaom
   libavutil      56. 19.101 / 56. 19.101
   libavcodec     58. 31.100 / 58. 31.100
   libavformat    58. 18.102 / 58. 18.102
   libavdevice    58.  4.104 / 58.  4.104
   libavfilter     7. 32.100 /  7. 32.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
 [libaom-av1 @ 0x559d38735fc0] v1.0.0
 Input #0, ivf, from 'dua.ivf':
   Duration: 00:00:10.00, start: 0.000000, bitrate: 940 kb/s
     Stream #0:0: Video: av1 (Main) (av01 / 0x31307661), yuv420p(tv,
 bt709), 1920x1080, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
 [libaom-av1 @ 0x559d38739a80] v1.0.0
 Stream mapping:
   Stream #0:0 -> #0:0 (av1 (libaom-av1) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf58.18.102
     Stream #0:0: Video: wrapped_avframe, yuv420p, 1920x1080, q=2-31, 200
 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc58.31.100 wrapped_avframe
 frame=  250 fps= 64 q=-0.0 Lsize=N/A time=00:00:10.00 bitrate=N/A
 speed=2.58x
 video:131kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 253% cpu 3.925 total
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7456#comment:2>
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