[mythtv] DVB radio stutters on playback

Bradley Bell bradleyb at u.washington.edu
Thu Jan 24 11:32:33 UTC 2008


Last I heard audio-only wasn't supported at all in mythtv, so it's kind 
of a miracle that it works at all sometimes.
I get the same results as you with radio and music channels on my hd-5500.

-Brad


Robin Gilks wrote:
> Rather than open a ticket, I feel I may be configuring things wrong so
> heres the problem...
> 
> I'm running r15547 trunk on a combined be/fe and a separate fe. I can
> record DVB radio OK (checked with mplayer) but playback on both frontends
> results in stutters.
> 
> I wondering if I have to set up a special handler in the playback profiles
> to deal with a horizontal and vertical resolutions of 0 (since there is no
> video - as reported by mplayer) but I can't find anything appropriate from
> the drop down lists. Or do I have to stick to a particular sync method
> (obviously can't sync to video as there isn't any!!)
> 
> I get exactly the same symptoms on both Live and recorded radio.
> 
> A LiveTV frontend log of playback,audio results in the following (snippet)
> 
> 
> 2008-01-24 23:44:19.371 AO: 22784 bytes free on soundcard
> 2008-01-24 23:44:19.375 AO: 23184 bytes free on soundcard
> 2008-01-24 23:44:19.379 NVP: Waiting for prebuffer.. 4
> UUAAUAAAAAAAAAUUAUUAUUAAAAAAUAA
> 2008-01-24 23:44:19.379 AO: 23584 bytes free on soundcard
> 2008-01-24 23:44:19.383 AO: 23936 bytes free on soundcard
> 2008-01-24 23:44:19.387 AO: 24320 bytes free on soundcard
> 2008-01-24 23:44:19.391 AO: 24704 bytes free on soundcard
> 2008-01-24 23:44:19.395 AO: 25104 bytes free on soundcard
> 2008-01-24 23:44:19.399 AO: 25472 bytes free on soundcard
> 2008-01-24 23:44:19.403 AO: 25856 bytes free on soundcard
> 2008-01-24 23:44:19.407 AO: 26240 bytes free on soundcard
> 2008-01-24 23:44:19.411 AO: 26640 bytes free on soundcard
> 2008-01-24 23:44:19.411 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.415 AO: 20864 bytes free on soundcard
> 2008-01-24 23:44:19.419 AO: 21264 bytes free on soundcard
> 2008-01-24 23:44:19.423 AO: OutputAudioLoop: Play Event
> 2008-01-24 23:44:19.423 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.423 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.423 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.423 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.424 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.424 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.424 AO: audio waiting for space on soundcard: have
> 3312 need 6144
> 2008-01-24 23:44:19.426 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.431 AO: audio waiting for space on soundcard: have
> 3968 need 6144
> 2008-01-24 23:44:19.439 AO: audio waiting for space on soundcard: have
> 4736 need 6144
> 2008-01-24 23:44:19.447 AO: audio waiting for space on soundcard: have
> 5504 need 6144
> 2008-01-24 23:44:19.455 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.455 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.455 AO: audio waiting for space on soundcard: have 160
> need 6144
> 2008-01-24 23:44:19.463 AO: audio waiting for space on soundcard: have 896
> need 6144
> 2008-01-24 23:44:19.471 AO: audio waiting for space on soundcard: have
> 1664 need 6144
> 2008-01-24 23:44:19.479 AO: audio waiting for space on soundcard: have
> 2448 need 6144
> 2008-01-24 23:44:19.487 AO: audio waiting for space on soundcard: have
> 3200 need 6144
> 2008-01-24 23:44:19.495 AO: audio waiting for space on soundcard: have
> 3968 need 6144
> 2008-01-24 23:44:19.503 AO: audio waiting for space on soundcard: have
> 4736 need 6144
> 2008-01-24 23:44:19.511 AO: audio waiting for space on soundcard: have
> 5504 need 6144
> 2008-01-24 23:44:19.519 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.519 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.519 AO: audio waiting for space on soundcard: have 176
> need 6144
> 2008-01-24 23:44:19.527 AO: audio waiting for space on soundcard: have 896
> need 6144
> 2008-01-24 23:44:19.535 AO: audio waiting for space on soundcard: have
> 1664 need 6144
> 2008-01-24 23:44:19.543 AO: audio waiting for space on soundcard: have
> 2448 need 6144
> 2008-01-24 23:44:19.551 AO: audio waiting for space on soundcard: have
> 3200 need 6144
> 2008-01-24 23:44:19.559 AO: audio waiting for space on soundcard: have
> 3968 need 6144
> 2008-01-24 23:44:19.567 AO: audio waiting for space on soundcard: have
> 4736 need 6144
> 2008-01-24 23:44:19.575 AO: audio waiting for space on soundcard: have
> 5504 need 6144
> 2008-01-24 23:44:19.584 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.584 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.585 AO: audio waiting for space on soundcard: have 320
> need 6144
> 2008-01-24 23:44:19.595 AO: audio waiting for space on soundcard: have
> 1280 need 6144
> 2008-01-24 23:44:19.603 AO: audio waiting for space on soundcard: have
> 2048 need 6144
> 2008-01-24 23:44:19.611 AO: audio waiting for space on soundcard: have
> 2880 need 6144
> 2008-01-24 23:44:19.612 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.614 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.616 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.616 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.617 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.617 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.618 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.619 AO: audio waiting for space on soundcard: have
> 3584 need 6144
> 2008-01-24 23:44:19.622 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.624 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.624 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.627 AO: audio waiting for space on soundcard: have
> 4416 need 6144
> 2008-01-24 23:44:19.635 AO: audio waiting for space on soundcard: have
> 5120 need 6144
> 2008-01-24 23:44:19.643 AO: audio waiting for space on soundcard: have
> 5936 need 6144
> 2008-01-24 23:44:19.651 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.651 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.651 AO: audio waiting for space on soundcard: have 544
> need 6144
> 2008-01-24 23:44:19.659 AO: audio waiting for space on soundcard: have
> 1328 need 6144
> 2008-01-24 23:44:19.667 AO: audio waiting for space on soundcard: have
> 2048 need 6144
> 2008-01-24 23:44:19.675 AO: audio waiting for space on soundcard: have
> 2864 need 6144
> 2008-01-24 23:44:19.683 AO: audio waiting for space on soundcard: have
> 3584 need 6144
> 2008-01-24 23:44:19.691 AO: audio waiting for space on soundcard: have
> 4416 need 6144
> 2008-01-24 23:44:19.699 AO: audio waiting for space on soundcard: have
> 5120 need 6144
> 2008-01-24 23:44:19.707 AO: audio waiting for space on soundcard: have
> 5952 need 6144
> 2008-01-24 23:44:19.715 AO: Broadcasting free space avail
> 2008-01-24 23:44:19.715 WriteAudio: Preparing 6144 bytes (3072 frames)
> 2008-01-24 23:44:19.715 AO: audio waiting for space on soundcard: have 560
> need 6144
> 2008-01-24 23:44:19.723 AO: audio waiting for space on soundcard: have
> 1344 need 6144
> 2008-01-24 23:44:19.731 AO: audio waiting for space on soundcard: have
> 2048 need 6144
> 2008-01-24 23:44:19.739 AO: audio waiting for space on soundcard: have
> 2880 need 6144
> 2008-01-24 23:44:19.743 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.744 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.745 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.747 AO: audio waiting for space on soundcard: have
> 3600 need 6144
> 2008-01-24 23:44:19.748 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.748 NVP::AddAudioData():p2: Audio buffer overflow,
> audio data lost!
> 2008-01-24 23:44:19.756 AO: audio waiting for space on soundcard: have
> 4432 need 6144
> 
> 



More information about the mythtv-dev mailing list