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.