[FFmpeg-trac] #3397(avcodec:new): gray decoding regression
FFmpeg
trac at avcodec.org
Tue Feb 18 16:59:53 CET 2014
#3397: gray decoding regression
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: important | Component: avcodec
Version: git- | Keywords: h264
master | regression
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
-------------------------------------+-------------------------------------
http://thread.gmane.org/gmane.comp.video.ffmpeg.user/50518/focus=50526
H264 decoding with {{{-flags +gray}}} is broken for for P-frames and
B-frames, regression since bb29ee62 / d2a25c40
out.avi is green except for input I-frames:
{{{
$ ffmpeg -flags +gray -i fate-suite/h264/extreme-plane-pred.h264 -qscale 2
out.avi
ffmpeg version N-60713-g1355caf Copyright (c) 2000-2014 the FFmpeg
developers
built on Feb 18 2014 16:50:43 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --enable-gray
libavutil 52. 64.100 / 52. 64.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 1.102 / 4. 1.102
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, h264, from 'fate-suite/h264/extreme-plane-pred.h264':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264 (High), yuv420p, 352x288, 25 fps, 25 tbr,
1200k tbn, 50 tbc
Please use -q:a or -q:v, -qscale is ambiguous
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf55.33.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 352x288,
q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Press [q] to stop, [?] for help
frame= 100 fps=0.0 q=2.0 Lsize= 3532kB time=00:00:04.00
bitrate=7232.8kbits/s
video:3524kB audio:0kB subtitle:0 data:0 global headers:0kB muxing
overhead 0.225428%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3397>
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