[MPlayer-users] Strange Problem with DV AVI Play Back

[Charles philip Chan]

I have a very strange problem with playing back a DV avi file. I
transcoded the original file with MEncoder for a friend with the
following commandline:

,----
| mencoder -o "<OUT_FILE>" -af resample=48000:0:2,channels=2 \
| -srate 48000 -oac pcm -ofps 25 -xy 720 -zoom \
| -vf scale,expand=720:576,harddup,dsize=4/3 \
| -ovc lavc -lavcopts vcodec=dvvideo -ffourcc dvsd "<IN_FILE>"
`----

However, the file produces a blank screen with mplayer with no errors in
the console:

,----[ Output from mplayer ]
| AVI file format detected.
| [aviheader] Video stream found, -vid 0
| [aviheader] Audio stream found, -aid 1
| AVI: ODML: Building ODML index (2 superindexchunks).
| VIDEO:  [dvsd]  720x576  24bpp  25.000 fps  28800.0 kbps (3515.6 kbyte/s)
| Clip info:
|  Software: MEncoder dev-SVN-r27226-4.2.1
| ==========================================================================
| Opening video decoder: [dshow] DirectShow video codecs
| Decoder supports the following YUV formats: YUY2 UYVY
| Decoder is capable of YUV output (flags 0x9)
| VDec: vo config request - 720 x 576 (preferred colorspace: Packed YUY2)
| [PP] Using codec's postprocessing, max q = 4.
| VDec: using Packed YUY2 as output csp (no 0)
| Movie-Aspect is undefined - no prescaling applied.
| VO: [xv] 720x576 => 720x576 Packed YUY2
| Selected video codec: [qdv] vfm: dshow (Sony Digital Video (DV))
| ==========================================================================
| ==========================================================================
| Opening audio decoder: [pcm] Uncompressed PCM audio decoder
| AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio: 192000->192000)
| Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
| ==========================================================================
| AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
| Starting playback..
`----

It plays back fine with programs that usings xine as the engine. My
mplayer version is dev-SVN-r27240-4.2.1. Have anyone else encountered
play back problems with DV's lately?

Thanks.

Charles

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