[FFmpeg-trac] #3717(avcodec:open): vp9 artifacts
FFmpeg
trac at avcodec.org
Wed Jun 11 22:02:49 CEST 2014
#3717: vp9 artifacts
---------------------------------------+-----------------------------------
Reporter: kyh96403 | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: vp9 artifacts | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
---------------------------------------+-----------------------------------
Changes (by ubitux):
* status: new => open
* reproduced: 0 => 1
Comment:
Green artifact visible with:
{{{
% ./ffplay -ss 24 -i /tmp/la\ la\ la.webm
ffplay version N-63900-g0180c46 Copyright (c) 2003-2014 the FFmpeg
developers
built on Jun 11 2014 21:33:53 with gcc 4.9.0 (GCC) 20140521 (prerelease)
configuration: --enable-gpl --enable-fontconfig --enable-libfreetype
--enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libvpx
--enable-x11grab --samples=/home/ubitux/fate-samples --assert-level=2
--cc='ccache cc'
libavutil 52. 89.100 / 52. 89.100
libavcodec 55. 66.100 / 55. 66.100
libavformat 55. 43.100 / 55. 43.100
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 8.100 / 4. 8.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, matroska,webm, from '/tmp/la la la.webm':q= 0B f=0/0
Metadata:
encoder : google
Duration: 00:03:30.28, start: 0.000000, bitrate: 1868 kb/s
Stream #0:0(eng): Video: vp9, yuv420p, 1920x1080, SAR 1:1 DAR 16:9, 25
fps, 25 tbr, 1k tbn, 1k tbc (default)
23.80 M-V: 0.000 fd= 0 aq= 0KB vq= 42KB sq= 0B f=0/0
}}}
Problem seems to be in ASM (not reproducible with {{{-cpuflags none}}}),
in particular {{{init_dc_ipred(TX_4X4, 4, ssse3);}}}.
It would be really nice if you could upload the sample on our FTP.
Mentioning our bugreport page (http://ffmpeg.org/bugreports.html):
> Furthermore movie files uploaded to services like megaupload, rapidshare
or any other similar service will be ignored. We are not willing to spend
our time fighting with this ridiculous, bloated and spam-filled crap.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3717#comment:1>
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