PDA

View Full Version : Buffer underuns with FLAC (wav & mp3 OK)



PhlLeig@aol.com
2004-06-14, 12:01
Trying again with June 14th + v24...both FLAC and WAV fail to fill the
buffer to more than 50% before the buffer starts to drain (and then the inevitable
dropout). MP3 (as usual) has a full buffer and no dropouts - whether native
MP3 or WAV/FLAC transcoded on the fly...
On the other hand, the 98% CPU problem has gone!
Any suggestions on what I could look for in an Ethereal trace that might
help?
Interestingly, on Windows Task Manager (Networking) the normally flat trace
is showing a very jagged line which corresponds almost exactly to the buffer
filling/draining.
It seems to my non-techie brain that FLAC/WAV is not being consumed at a
fast enough rate/in big enough chunks at the client end...
Presumably (and this is a wild guess) MP3 is no problem because the chunks
are smaller?

Any help gratefully received
Thanks
Phil

seanadams
2004-06-14, 12:11
Phil,

If you can email me an ethereal trace it would be immensely helpful.

Also please test with v.23 (see instruction a couple posts ago) to
confirm if its a new issue in v.24

Thanks,

Sean


On Jun 14, 2004, at 12:01 PM, PhlLeig (AT) aol (DOT) com wrote:

>
> Trying again with June 14th + v24...both FLAC and WAV fail to fill the
> buffer to more than 50% before the buffer starts to drain (and then
> the inevitable dropout). MP3 (as usual) has a full buffer and no
> dropouts - whether native MP3 or WAV/FLAC transcoded on the fly...
> On the other hand, the 98% CPU problem has gone!
> Any suggestions on what I could look for in an Ethereal trace that
> might help?
> Interestingly, on Windows Task Manager (Networking) the normally flat
> trace is showing a very jagged line which corresponds almost exactly
> to the buffer filling/draining.
> It seems to my non-techie brain that FLAC/WAV is not being consumed at
> a fast enough rate/in big enough chunks at the client end...
> Presumably (and this is a wild guess) MP3 is no problem because the
> chunks are smaller?
>
> Any help gratefully received
> Thanks
> Phil
>
>
>