Mailing List archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[vdr] Re: AnalogTV patch adding a sample rate setting



* Guido Fiala <gfiala@s.netic.de> [040215 14:40]:

Sorry for the previous message I sent as wihtin another unrelated
thread...

Andreas, would you mind merging this on your source?
I need to set a sampling rate of 32 KHz to get sound from the digital
capture of my Hauppauge WinTV card, which I access through the btaudio
OSS module.

I've just tested mp1e from within analogtv, but I know the settings work
with both ffmpeg and mencoder. I didn't have have and for the other
encoders either I didn't know what the setting might be /and/or I din't
even have a copy of the program (fame).

BTW, recently a btaudio module was added to ALSA. I tried it with
analogtv, both acessing the ALSA device directly (as explained in your
INSTALL guide) and through OSS emaulation with /dev/dsp. Both ways
resulted in a huge capturing performace drop. Usually mp1e only takes
3-5% of CPU usage of my AthlonXP 2000+, cpturing at 4.5 Mbit/s @ 352x576,

I do not really understand which possibility is best from above?
I use the OSS btaudio which is substantially faster.

BTW - is the problem gone, that using btaudio the sound become like mikey-mouse voices after some time as it did the last time i checked?
Yes, that's what my patch is intended for. I have to set the sampling
rate to 32 to get decent sound, otherwise the sound is quite smurf-like.

Remeber this is with the digital dsp of btaudio. The analog one needs
44.1, but I prefer the digital over the analog becuase it's cleaner and
the anlog produces a kind of pike in the sound every few seconds,
whatever the sample rate is set to.


--
Javier Marcet <javier@marcet.info>


--
Info:
To unsubscribe send a mail to ecartis@linuxtv.org with "unsubscribe vdr" as subject.



Home | Main Index | Thread Index