[MPlayer-users] more newbie questions

[Brian Craft]

What is the advantage of the RTC support? Is it more accurate? Or burn less
cpu?

How can I tell what video format a file is in? I note this during mplayer
start-up:

  VIDEO:  []  720x480  24bpp  29.97 fps  6456.6 kbps (788.2 kbyte/s)
  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? Why are there two VIDEO lines? And why is one
of them "^B"? What is "aspect 2"? Is that a widescreen format, or something?

What does the following mean?

  No accelerated IMDCT transform found

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 :(
  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))


b.c.