Hi,
we have a big problem with bttv Video Capture cards.
system is composed by 4 bt878 based cards, for a total of 16 video
inputs.
With a definition of 640x240, and 3 frame per seconds each video input, we
saw a lot of strange lines that doesn't appear in other conditions
We try capturing with mplayer, vlc, ffmpeg; we try also various
distribution (ubuntu, debian, redhat) and every time appear the same
problem, so I think that could be a kernel or a driver sistematic problem.
Tried a lot of 2.6 kernels and configurations (preemtible or not, different
versions of v4l).
The conditions in which the problem doesn't appear is:
- with less capturing video inputs
- with less frame per seconds or a worse resolution.
With a 2.4 kernels everythings works fine, so the problem should be in the
2.6 series.
A video with this problem can be found in here:
lines start about from the 20th second.
So, it's much more noisy when someone move in the video
someone saw the same problems? any ideas? suggestion?
Thank you.