[MPlayer-users] Slow DVD video playback, other videos play fine
rcooley at spamcop.net
Sat Mar 5 21:03:16 CET 2005
On Wed, 02 Mar 2005 22:08:35 +0100
Julius Schwartzenberg <julius at zgod.cjb.net> wrote:
> Is it normal that DVD videos require much more CPU than an MPEG4 encoded
> movie for example? I thought that most DVD movies were encoded in MPEG2
> and that MPEG2 required less CPU than MPEG4 to be decoded.
No, it's not normal. However, there are a few things that might be causing it.
If the DVD video is much higher res than the MPEG-4 videos you've been playing, that may account for more CPU usage with MPEG-2, especially with a crappy (onboard) videocard.
If your DVD-ROM doesn't have DMA support enabled (see hdparm), then just reading the DVD would use up significant CPU power.
MPEG-4 is played back with libavcodec by default, and MPEG-2 is played back by libmpeg2 by default... When playing a DVD, try adding "-vfm ffmpeg" to your command-line, and see if you get better results (if so, file a bugreport).
You really should include much more information about your problem.
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