[FFmpeg-trac] #1282(avcodec:open): VP6F Libavcodec decoding bug (was: FLV4 / VP6 Libavcodec decoding bug)
FFmpeg
trac at avcodec.org
Tue May 8 07:43:57 CEST 2012
#1282: VP6F Libavcodec decoding bug
-------------------------------------+-------------------------------------
Reporter: | Owner:
theshadowrunner | Status: open
Type: defect | Component: avcodec
Priority: normal | Resolution:
Version: git-master | Blocked By:
Keywords: vp6f | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* status: new => open
* reproduced: 0 => 1
* component: FFmpeg => avcodec
* version: unspecified => git-master
* keywords: FLV4, VP6, Libacodec => vp6f
Comment:
Not a regression, afaict (see issue 965).
{{{
ffmpeg -i sample_artefact.flv -q:v 2 -an out.avi
ffmpeg version N-40448-g16b9156 Copyright (c) 2000-2012 the FFmpeg
developers
built on May 7 2012 16:44:46 with gcc 4.3.2
configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl
libavutil 51. 49.100 / 51. 49.100
libavcodec 54. 19.100 / 54. 19.100
libavformat 54. 4.100 / 54. 4.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 72.104 / 2. 72.104
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, flv, from 'sample_artefact.flv':
Metadata:
creationdate : Fri Oct 29 19:33:39 2010
:
lastkeyframetimestamp: 540632
lasttimestamp : 544207
On2 : Technologies
Duration: 00:02:36.19, start: 0.000000, bitrate: 508 kb/s
Stream #0:0: Video: vp6f, yuv420p, 596x336, 30 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 44100 Hz, mono, s16, 48 kb/s
[buffer @ 0x8f3f160] w:596 h:336 pixfmt:yuv420p tb:1/1000000 sar:0/1
sws_param:flags=2
Output #0, avi, to 'out.avi':
Metadata:
creationdate : Fri Oct 29 19:33:39 2010
:
lastkeyframetimestamp: 540632
lasttimestamp : 544207
On2 : Technologies
ISFT : Lavf54.4.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 596x336,
q=2-31, 200 kb/s, 30 tbn, 30 tbc
Stream mapping:
Stream #0:0 -> #0:0 (vp6f -> mpeg4)
Press [q] to stop, [?] for help
frame= 3193 fps=118 q=2.0 Lsize= 28060kB time=00:01:46.43
bitrate=2159.8kbits/s
video:27978kB audio:0kB global headers:0kB muxing overhead 0.292999%
}}}
{{{
$ ffmpeg -i bleeding_pixelated_video.flv -q:v 2 -an out.avi
ffmpeg version N-40448-g16b9156 Copyright (c) 2000-2012 the FFmpeg
developers
built on May 7 2012 16:44:46 with gcc 4.3.2
configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl
libavutil 51. 49.100 / 51. 49.100
libavcodec 54. 19.100 / 54. 19.100
libavformat 54. 4.100 / 54. 4.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 72.104 / 2. 72.104
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, flv, from 'bleeding_pixelated_video.flv':
Duration: 00:00:24.59, start: 0.000000, bitrate: 3330 kb/s
Stream #0:0: Video: vp6f, yuv420p, 640x368, 25 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16, 64 kb/s
[buffer @ 0x8f6d920] w:640 h:368 pixfmt:yuv420p tb:1/1000000 sar:0/1
sws_param:flags=2
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf54.4.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 640x368,
q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (vp6f -> mpeg4)
Press [q] to stop, [?] for help
frame= 411 fps= 60 q=2.0 Lsize= 21966kB time=00:00:16.48
bitrate=10919.1kbits/s
video:21951kB audio:0kB global headers:0kB muxing overhead 0.070154%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1282#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list