[gstreamer-bugs] [Bug 385061] Fairly high CPU usage when decoding (~6-15 times slower compared to mplayer)

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.3





------- Comment #7 from Sebastian Dröge  2006-12-12 19:16 UTC -------
Every test is called 4 times and the average real time is used.

mplayer -quiet -vo null -vc null -ao pcm:file=/dev/null test.mp3: ~16.63s
mplayer -quiet -vo null -vc null -ao pcm:file=/dev/null test.ogg: ~6.47s


gst-launch-0.10 filesrc location=test.mp3 ! decodebin ! fakesink silent=true:
~6.77s
gst-launch-0.10 filesrc location=test.mp3 ! decodebin ! audioresample !
"audio/x-raw-int,rate=48000" ! fakesink silent=true: (one run) 3:21
gst-launch-0.10 filesrc location=test.mp3 ! ffdemux_mp3 ! ffdec_mp3 ! fakesink
silent=true: ~6.96s
gst-launch-0.10 filesrc location=test.ogg ! decodebin ! fakesink silent=true:
~6.92s
gst-launch-0.10 filesrc location=test.ogg ! decodebin ! audioresample !
audioconvert ! "audio/x-raw-int,rate=48000" ! fakesink silent=true: (one run)
3:17


So the evil one here seems to be audioresample (my soundcard can only do
48khz)... and in general we're as fast as mplayer when it comes to decoding,
even much faster when decoding via ffmpeg's mp3 decoder for some reason
(probably older ffmpeg in mplayer).


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