[FFmpeg-trac] #5095(avcodec:new): Many warnings shown when decoding a 4k hevc sample
FFmpeg
trac at avcodec.org
Fri Dec 18 21:38:31 CET 2015
#5095: Many warnings shown when decoding a 4k hevc sample
--------------------------------------+---------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: minor | Component: avcodec
Version: git-master | Keywords: hevc
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
--------------------------------------+---------------------------------
http://thread.gmane.org/gmane.comp.video.ffmpeg.user/60065
A Samsung HDR 4k HEVC sample produces many warnings when decoding, heavily
affecting decoding speed.
{{{
$ ffmpeg -threads 1 -i Samsung_SUHD_Picture_Quality\ Demo_Nano_Crystal\
Display_UK-Version_cut.mp4 -f null -vframes 7 -
ffmpeg version N-77376-gaefcc77 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 55. 11.100 / 55. 11.100
libavcodec 57. 18.100 / 57. 18.100
libavformat 57. 20.100 / 57. 20.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 21.100 / 6. 21.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Samsung_SUHD_Picture_Quality
Demo_Nano_Crystal Display_UK-Version_cut.mp4':
Metadata:
major_brand : hvc1
minor_version : 0
compatible_brands: isomhvc1
creation_time : 2015-07-11 03:36:53
Duration: 00:01:55.35, start: 0.000000, bitrate: 177 kb/s
Stream #0:0(eng): Data: none (mp4s / 0x7334706D), 224 kb/s (default)
Metadata:
creation_time : 2015-07-11 03:36:53
Stream #0:1(eng): Data: none (mp4s / 0x7334706D), 240 kb/s (default)
Metadata:
creation_time : 2015-07-11 03:36:53
Stream #0:2(eng): Video: hevc (Main 10) (hvc1 / 0x31637668),
yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9],
49999 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc (default)
Metadata:
creation_time : 2015-07-11 03:36:53
encoder : HEVC Coding
Stream #0:3(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 383 kb/s (default)
Metadata:
creation_time : 2015-07-11 03:36:53
Output #0, null, to 'pipe:':
Metadata:
major_brand : hvc1
minor_version : 0
compatible_brands: isomhvc1
encoder : Lavf57.20.100
Stream #0:0(eng): Video: wrapped_avframe, yuv420p10le, 3840x2160 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
Metadata:
creation_time : 2015-07-11 03:36:53
encoder : Lavc57.18.100 wrapped_avframe
Stream #0:1(und): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
(default)
Metadata:
creation_time : 2015-07-11 03:36:53
encoder : Lavc57.18.100 pcm_s16le
Stream mapping:
Stream #0:2 -> #0:0 (hevc (native) -> wrapped_avframe (native))
Stream #0:3 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[hevc @ 0x2939620] Invalid NAL unit 0, skipping.
Last message repeated 207805 times
[hevc @ 0x2939620] Invalid NAL unit 0, skipping..00 bitrate=N/A speed=
0x
Last message repeated 104141 times
[hevc @ 0x2939620] Invalid NAL unit 0, skipping.0.21 bitrate=N/A
speed=0.206x
Last message repeated 156212 times
[hevc @ 0x2939620] Invalid NAL unit 0, skipping.0.30 bitrate=N/A
speed=0.194x
Last message repeated 94980 times
frame= 7 fps=3.7 q=-0.0 Lsize=N/A time=00:00:00.36 bitrate=N/A
speed=0.195x
video:3kB audio:40kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
}}}
Decoding is bitexact wrt the reference decoder.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5095>
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