[mythtv] DVB radio stutters on playback

Robin Gilks g8ecj at gilks.org
Thu Jan 24 10:50:45 UTC 2008


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


-- 
Robin Gilks




More information about the mythtv-dev mailing list