[MPlayer-matrox] Any way to run mplayer continuously for analog rebroadcasting?

[Brian Thompson]

Attila, thanks for the info. I'm trying to go in this direction but it 
looks
like the -fixed-vo and -idle flags are only available in the CVS version
of mplayer and I've run into a new problem trying to use the CVS
version of mplayer instead of mplayer-1.0pre7try2. I can't seem to get
any audio from the CVS version. I've tried quite a few of the additional
audio filter flags over the past several hours but nothing seems to help.

I admit neither of the following outputs look perfect, but the first one
(mplayer-1.0pre7try2) does work. I'm using "-ao alsa" with no additional
audio parameters in both of the following cases. The sound card is a
USB Edirol UA-25. Anyone have any idea what I might be doing wrong?
Thanks in advance for any suggestions.

With mplayer-1.0pre7try2 I get the following and audio works fine:

Checking audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 48000Hz/2ch/s16le
AF_pre: 48000Hz/2ch/s16le
alsa-init: requested format: 48000 Hz, 2 channels, 9
alsa-init: compiled for ALSA-1.0.8
alsa-init: setup for 1/2 channel(s)
alsa-init: 1 soundcard found, using: default
alsa-init: pcm opend in block-mode
alsa-init: format s16le are not supported by hardware, trying default
alsa-init: unable to set format: Invalid argument
alsa-init: chunksize set to 1024
alsa-init: fragcount=16
alsa-init: got buffersize=65536
alsa: 44100 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little 
Endian
AO: [alsa] 44100Hz 2ch s16le (2 bps)
AO: Description: ALSA-0.9.x-1.x audio output
AO: Author: Alex Beregszaszi, Zsolt Barat <joy at streamminister.de>
AO: Comment: under developement
Building audio filter chain for 48000Hz/2ch/s16le -> 44100Hz/2ch/s16le...
[dummy] Was reinitialized: 48000Hz/2ch/s16le
[libaf] Adding filter resample
[resample] Changing sample rate to 44100Hz
[resample] Changing sample rate to 44100Hz
[resample] Using linear interpolation.
[dummy] Was reinitialized: 48000Hz/2ch/s16le
[resample] Using linear interpolation.
Starting playback...
alsa-space: free space = 65536, prepared --
[libaf] Reallocating memory in module resample, old len = 0, new len = 60212


With the latest CVS version of mplayer I get the following and no audio:

Building audio filter chain for 48000Hz/2ch/s16le -> 0Hz/0ch/??...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 48000Hz/2ch/s16le
[dummy] Was reinitialized: 48000Hz/2ch/s16le
alsa-init: requested format: 48000 Hz, 2 channels, 9
alsa-init: using ALSA 1.0.8
alsa-init: setup for 1/2 channel(s)
alsa-init: using device default
alsa-init: pcm opend in blocking mode
alsa-init: format s16le are not supported by hardware, trying default
alsa-init: unable to set format: Invalid argument
Could not open/initialize audio device -> no sound.
Uninit audio filters...
[libaf] Removing filter dummy
Uninit audio: dmo
Audio: no sound
Freeing 0 unused audio chunks.
Starting playback...

-Brian


Attila Kinali wrote:

>On Tue, 09 May 2006 15:41:06 -0400
>Brian Thompson <brian at eng.wayne.edu> wrote:
>
>  
>
>>It would be ideal if there was a way to keep mplayer from
>>quiting at the end of an event and try to reopen the same
>>stream,
>>    
>>
>
>This can be done if you use -idle in combination with -fixed-vo
>(I'm not sure whether -fixed-vo works correctly with (x)mga
>as i cannot test it currently, if it doesn't let me know)
>
>  
>
>>preferably while the remaining buffer is still playing
>>in order to avoid the loss of the first few seconds of the next
>>event. 
>>    
>>
>
>This can be solved using -slave interface. See the documentation
>of the loadfile command in DOCS/tech/slave.txt.
>Though i'm not sure whether MPlayer starts to buffer a stream
>while another is still running.
>
>  
>
>>If no content is available or while it's trying to reopen
>>the URL and refill it's cache, the matrox card would output
>>a blank/black tv-out image with proper sync.
>>    
>>
>
>Hmm.. this is a bit more tricky. You'd have to manualy
>insert a black image. Maybe using loadfile and a black
>gif/jpeg could do the trick. Otherwise when using -fixed-vo
>the last shown frame stays on, which is probably not what you want.
>
>  
>
>>Does such a "continuous mode" exist and I'm just not able
>>to find it in the command line options, or is this something that
>>can be requested for a future release?
>>    
>>
>
>I think you can hack something together with the above suggestions.
>If it doesn't help or you encounter other problems, please let me know.
>
>				Attila Kinali
>
>  
>