[mythtv-users] Alsa Prealloc Query
jyavenard at gmail.com
Thu Dec 16 01:27:10 UTC 2010
On 16 December 2010 07:55, Zooka <mythtv at fitzy.org> wrote:
>> What kind of content were you trying to play? (sampling rate, sample
>> format (16, 24, 32 bits) and how many channels?
> This is the ffmpeg -i output. Is this sufficient?
> Stream #0.1[0x433](eng): Audio: ac3, 48000 Hz, stereo, s16, 384 kb/s
>> If you could reproduce the original condition and run mythfrontend -v
>> audio and upload the log in pastebin.ca
We asked for a 200ms length buffer, yet ALSA gives us 110ms.
To get 200ms of audio, we need:
48000 * 2 (channels) * 2 (bytes per channel) * .2 = 38400 bytes = 37kB.
So a 64kB buffer should be plenty.
I had made some assumptions on how ALSA worked, seems it's not the
case for everyone.. bugger..
More information about the mythtv-users