[MPlayer-users] vd_black prevents video from being played in some streams

[Giorgio Vazzana]

Hello,

after the introduction of vd_black (r35249), some live streams from
rai.tv stopped working. Here is a sample to reproduce the problem:
http://mywing.altervista.org/tmp/rai3.dump

holden at rye:~$ mplayer -noquiet rai3.dump
MPlayer SVN-r35250-4.4.3 (C) 2000-2012 MPlayer Team

Playing rai3.dump.
libavformat version 54.32.101 (internal)
ASF file format detected.
[asfheader] Audio stream found, -aid 1
[asfheader] Video stream found, -vid 2
VIDEO:  [WMV3]  720x576  24bpp  1000.000 fps  1000.0 kbps (122.1 kbyte/s)
Clip info:
 title:
 author:
 copyright:
 comments:
Load subtitles in ./
==========================================================================
Requested video codec family [wmv9dmo] (vfm=dmo) not available.
Enable it at compilation.
Requested video codec family [wmvdmo] (vfm=dmo) not available.
Enable it at compilation.
Opening video decoder: [black] black video generator
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 720x576 => 720x576 Planar YV12
[vd_black] format: Planar YV12
Selected video codec: [black] vfm: black (black codec (no decoding
just output black frames!))
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
libavcodec version 54.66.100 (internal)
AUDIO: 44100 Hz, 2 ch, floatle, 96.0 kbit/3.40% (ratio: 12005->352800)
Selected audio codec: [ffwmav2] afm: ffmpeg (DivX audio v2 (FFmpeg))
==========================================================================
AO: [pulse] 44100Hz 2ch floatle (4 bytes per sample)
Starting playback...
A:3513212.8 V:3513212.7 A-V:  0.177 ct:  0.076  28/ 28  0%  0%  0.9% 1 0

Exiting... (Quit)

vd_black gets selected by default, resulting in only the audio, and
not the video, being played. Of course with:

holden at rye:~$ mplayer -noquiet -vfm ffmpeg rai3.dump
MPlayer SVN-r35250-4.4.3 (C) 2000-2012 MPlayer Team

Playing rai3.dump.
libavformat version 54.32.101 (internal)
ASF file format detected.
[asfheader] Audio stream found, -aid 1
[asfheader] Video stream found, -vid 2
VIDEO:  [WMV3]  720x576  24bpp  1000.000 fps  1000.0 kbps (122.1 kbyte/s)
Clip info:
 title:
 author:
 copyright:
 comments:
Load subtitles in ./
==========================================================================
Trying to force video codec driver family ffmpeg...
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 54.66.100 (internal)
Unsupported PixelFormat 61
Unsupported PixelFormat 53
Unsupported PixelFormat 81
[wmv3 @ 0xf27200]Extra data: 8 bits left, value: 0
Selected video codec: [ffwmv3] vfm: ffmpeg (FFmpeg WMV3/WMV9)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, floatle, 96.0 kbit/3.40% (ratio: 12005->352800)
Selected audio codec: [ffwmav2] afm: ffmpeg (DivX audio v2 (FFmpeg))
==========================================================================
AO: [pulse] 44100Hz 2ch floatle (4 bytes per sample)
Starting playback...
Unsupported PixelFormat 61
Unsupported PixelFormat 53
Unsupported PixelFormat 81
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 720x576 => 720x576 Planar YV12
A:3513212.5 V:3513211.9 A-V:  0.530 ct:  0.036  10/ 10 ??% ??% ??,?% 1 0

Exiting... (Quit)

the video works. Would it be possible to change the priority/select
the old behaviour where these kind of streams worked without
additional options in the command line? (this is also important
because it broke raismth, a firefox plugin to watch rai live
streams/archives using MPlayer)

Thanks.
Giorgio Vazzana