> -----原始邮件-----
> 发件人: "周晓勇" <zhouxiaoy...@loongson.cn>
> 发送时间: 2015年9月3日 星期四
> 收件人: "FFmpeg development discussions and patches" <ffmpeg-devel@ffmpeg.org>
> 抄送:
> 主题: Re: [FFmpeg-devel] [PATCH 1/3] avcodec: loongson delete invalid simple
> idct put and add optimization
>
>
>
>
> > -----原始邮件-----
> > 发件人: "Michael Niedermayer" <michae...@gmx.at>
> > 发送时间: 2015年9月2日 星期三
> > 收件人: "FFmpeg development discussions and patches" <ffmpeg-devel@ffmpeg.org>
> > 抄送:
> > 主题: Re: [FFmpeg-devel] [PATCH 1/3] avcodec: loongson delete invalid simple
> > idct put and add optimization
> >
> > On Wed, Sep 02, 2015 at 06:00:24PM +0800, 周晓勇 wrote:
> > > From e7dc62a7edbf985268908adf942e838548c09ef0 Mon Sep 17 00:00:00 2001
> > > From: ZhouXiaoyong <zhouxiaoy...@loongson.cn>
> > > Date: Tue, 1 Sep 2015 09:34:18 +0800
> > > Subject: [PATCH 1/3] avcodec: loongson delete invalid simple idct put and
> > > add
> > > optimization
> >
> > please document in the commit message why they are invalid
> >
> > [...]
> > --
as default idct mathod is simple, so using -idct simple get wrong decode, but
xvid right
the test video address:
http://loongnix.org/ftp/multimedia/testing/nanocore_720p_24fps_mpeg4_ac3_short.avi
please review the third patch optimized h264 idct and loopfilter, test result
on loongson-3A1000(which you have now):
1.no patch
frame= 1253 fps= 24 q=-0.0 Lsize= 3805988kB time=00:00:52.20
bitrate=597196.8kbits/s
video:3805988kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
real 0m53.112s
user 3m16.336s
sys 0m1.453s
2.with patch
frame= 1253 fps= 27 q=-0.0 Lsize= 3805988kB time=00:00:52.20
bitrate=597196.8kbits/s
video:3805988kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
real 0m47.923s
user 2m53.797s
sys 0m1.398s
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