Re: dts decoder performance result with avconv

2011/9/28 Feng Wei feng.wei@linaro.org:

Following tests are based on latest libav git. built with same configurations. The result is even stranger than gst-ffmpeg with sync.

time avconv -i nfsroot2/bitstreams/720p/Source.Code.2011.BluRay.720p.DTS.x264-CHD.mkv -t 0:1:0 -f s16le a.pcm panda -- 8.345s mx53  -- 54.678s

time avconv -i nfsroot2/bitstreams/720p/Source.Code.2011.BluRay.720p.DTS.x264-CHD.mkv -t 0:1:0 -f s32le b.pcm panda -- 9.419s mx53  -- 63.294s

mru, how can I enable profile instruments in libav, any configuration options?

Use perf or oprofile.

Why native gcc in linaro releases can't support neon instructions?

How do you mean? GCC isn't very good at generating NEON instruction itself, but it allows using them in hand-written assembler.