[MPlayer-users] more newbie questions
D Richard Felker III
dalias at aerifal.cx
Fri Feb 14 20:48:02 CET 2003
On Fri, Feb 14, 2003 at 11:01:02AM -0800, Brian Craft wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> What is the advantage of the RTC support? Is it more accurate? Or burn less
> How can I tell what video format a file is in? I note this during mplayer
> VIDEO:  720x480 24bpp 29.97 fps 6456.6 kbps (788.2 kbyte/s)
No idea what this one is.
> VIDEO: MPEG2 720x480 (aspect 2) 29.97 fps 12250.0 kbps (1531.2 kbyte/s)
> What's with the 29.97 fps? Is that really the frame rate of the source? What
> output devices run at 29.97 fps?
Yes, NTSC television (North America, Japan, etc.).
Well, actually the source material could be 24 fps movie, converted to
29.97 fps by so-called "telecine". Search the archives for details if
> What does the following mean?
> No accelerated IMDCT transform found
It means that your CPU doesn't have MMX/3dnow/etc., or that MPlayer
was not compiled with support for them.
> What's going on here, where it appears to be failing over to a different
> video codec? Does this mean I've failed to compile something correctly?
> Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> VDec: vo config request - 720 x 480 (preferred csp: Mpeg PES)
> Could not find matching colorspace - retrying with -vop scale...
> Opening video filter: [scale]
> The selected video_out device is incompatible with this codec.
> VDecoder init failed :(
Unless you have a hardware mpeg decoder card, of course passthrough is
going to fail.
> Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder v2.0
> libmpeg2: Using MMX for IDCT transform
> libmpeg2: Using MMX for motion compensation
> VDec: vo config request - 720 x 480 (preferred csp: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xmga] 720x480 => 720x540 Planar YV12
> [mga] Using 3 buffers.
> Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2))
Notice that mplayer falls back to the software decoder, which then
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