OS/2, eCS & ArcaOS - Technical > Multimedia
USB Audio
Lars:
Hi Wim,
from what I can tell from USBAUDIO.SYS tracing, Youtube will use 44.1 kHz stereo 16-bit PCM for sounds it wants to play. Therefore the dropouts when using Youtube in Firefox must stem from a different problem.
Andreas Kohl:
--- Quote from: Lars on March 09, 2017, 08:31:30 pm ---Hi Wim,
from what I can tell from USBAUDIO.SYS tracing, Youtube will use 44.1 kHz stereo 16-bit PCM for sounds it wants to play. Therefore the dropouts when using Youtube in Firefox must stem from a different problem.
--- End quote ---
Do you use any add-ons or the normal youtube website? How many tabs are opened? If you want to listen to continuous sound playback from a youtube stream, simply switch to a newly opened tab. For video playback I would recommend to use HTML5 everywhere add-on, to disable all the fancy yt stuff and open the video playback in its own tab or fullscreen. The behaviour seems to be introduced with the new audio backend which relies on this kai library. You can compare it to Firefox 10 (or Seamonkey 2.7.2) where the same stuff runs smoothier on the same hardware.
Neil Waldhauer:
When playing a YouTube movie, I can run AcpiStat.exe and show the number of interrupts, and it is thousands per second.
Dave Yeo:
The audio problem seems to be caused by Mozilla switching from sydneyaudio to libcubeb. One uses a push API and the other uses a pull API.
roberto:
My problem with youtube videos seems to have been solved simply with this:
Rem this line in config.sys and restart
REM 11-03-2017 DEVICE=C:\OS2\BOOT\USBRESMG.SYS
I have little tried but the difference is substantial.
And with different versions I appreciate important differences.
Saludos
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