Block sizes
Neil Sluman <[email protected]>
| Newsgroups | gmane.comp.multimedia.ogg.vorbis.general |
|---|---|
| Message-ID | <[email protected]> |
I’m developing an application that needs to record audio and also draw graphics at 30fps. Using a 32kHz sample rate the vorbis decoder causes choppiness in the graphics because we will typically only do any compression roughly every 1/16 seconds (2048 sample window size) so we take just a little too long to process every second frame. We have no preemptive multithreading but I can fix this problem by using the settings in ve_setup_22_uncoupled for 32Khz samples. This results in a smaller window size and means I do some processing every frame. * What are the trade-offs here? It's spending a little more time doing the encoding but does this also affect quality? * Is this the best way of doing this? * Is it possible to have more control over the window sizes? Just changing the numbers in blocksize_short and blocksize_long causes a crash so it's obviously more complex than that. ___________________________________________________________ Now you can scan emails quickly with a reading pane. Get the new Yahoo! Mail. http://uk.docs.yahoo.com/nowyoucan.html