Arch Linux

johneh87

Member

Registered: 2011-10-01

Posts: 8

Hauppauge PVR-150 Capture, Audio Static/Noise IVTV Composite input

Hello,

This is my first post.

I have been migrating from Gentoo to Arch after 7-8 years using gentoo, I think Arch is great. even though precompiled packages have there downside. anyway.

I have problem with static/noise audio when capturing from Composite using IVTV, im running kernel 3.0.4 arch kernel.

I have 10  Hauppauge PVR-150 (+1 PVR-500) Cards running, the problem occurs in a random card after reboot.
Video is fine on all cards, but sometimes the audio on either one of the 11 cards get static/noise in the audio background.. sometimes allot, other times just a little bit noise/static.

I tried the wiki, and searched the forum, but can't find a solution, can anyone help me??
I can provide sample (cat /dev/videoX > sample.mpeg) if interested.

See dmesg: http://pastebin.com/U2JnJ0Zr

Thank you

johneh87

Member

Registered: 2011-10-01

Posts: 8

Re: Hauppauge PVR-150 Capture, Audio Static/Noise IVTV Composite input

Hello,

changing to constant bitrate seems to correct the problem,

v4l2-ctl -d /dev/videoX --set-ctrl=video-bitrate-mode=1

and then remember to not have the capture source audio volume to more than 75%.