[lug] Re: ivtv: now what?

[steve at badcheese.com]

If mplayer shows snow, then you recorded snow.  :)

It's possible that your capture card is sending one input to /dev/video0 
and another input to /dev/video1, etc ...  Need to read-up on the driver 
and find out which input you need to listen to.

- Steve

On Tue, 5 Jun 2007, Steve Sullivan wrote:

> Date: Tue, 5 Jun 2007 08:23:39 -0600
> From: Steve Sullivan <sullivan at mathcom.com>
> Reply-To: "Boulder (Colorado) Linux Users Group -- General Mailing List"
>     <lug at lug.boulder.co.us>
> To: lug at lug.boulder.co.us
> Subject: [lug] Re: ivtv: now what?
> 
> Calvin Dodge wrote ...
>> Have you tried the relatively crude "cat /dev/video0 >/tmp/test.mpg"?
>
> Wow - /dev/video0 works!  Thank you!  How can I view the file?
>
> $ cat /dev/video0 > temp.mpg
> $ file temp.mpg
> temp.mpg: MPEG sequence, v2, program multiplex
>
> I've tried ...
>  lavplay  only does quicktime and avi
>  yuvplay  does nothing
>  playdv   just shows random color blobs
>  lqtplay  quicktime only
>  rootv    appears to be live tv only, not from files
>  xine     cannot find decoder (see below)
>  mplayer  shows only snow (see below for messages)
>
> ==========================================================================
>
> xine reports:
>
> xine engine error
> There is no demuxer plugin available to handle 'temp.mpg'.
> Usually this means that the file format was not recognized.
> xine: found demuxer plugin: image demux plugin
> xine: found input plugin: file input plugin
> xine: couldn't find demux for >temp.mpg<
> xine: found input plugin: file input plugin
>
> ==========================================================================
>
> mplayer plays for the correct length of time (it's a 10 second clip),
> but shows only snow.  It reports:
>
> $ /home/ss/ftp/mplayer/tdi/bin/mplayer tempb.mpg
> MPlayer 1.0rc1-4.1.2 (C) 2000-2006 MPlayer Team
> CPU: AMD Opteron(tm) Processor 246 (Family: 15, Model: 5, Stepping: 10)
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2
> mplayer: could not connect to socket
> mplayer: Connection refused
> Failed to open LIRC support. You will not be able to use your remote control.
>
> Playing tempb.mpg.
> MPEG-PS file format detected.
> VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  8000.0 kbps (1000.0 kbyte/s)
> =====
> Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> VDec: vo config request - 720 x 480 (preferred colorspace: Mpeg PES)
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> The selected video_out device is incompatible with this codec.
> Try adding the scale filter, e.g. -vf spp,scale instead of -vf spp.
> VDecoder init failed :(
> Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
> Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
> =====
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 48000 Hz, 2 ch, s16le, 224.0 kbit/14.58% (ratio: 28000->192000)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> =====
> AO: [oss] 48000Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 720x480 => 720x540 Planar YV12
> New_Face failed. Maybe the font path is wrong. 2 ??% ??% ??,?% 0 0
> Please supply the text font file (~/.mplayer/subfont.ttf).
> subtitle font: load_sub_face failed.
> A:  10.8 V:  10.9 A-V: -0.177 ct: -0.140 320/320 11%  0%  0.7% 0 0
>
> Exiting... (End of file)
>
> ==========================================================================
>
> How can I remedy this?
>
> Many thanks,
>
> Steve
>
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-- 
EMAIL: (h) steve at badcheese.com  WEB: http://badcheese.com/~steve