Stan Brown wrote:
The "errors" are due to the difference between the system clock, and the
source video clock. Unfortunatley, low-end capture cards do not
generate a clock from the input stream, so we have to use the system
clock. The slight drift between the two will result in occasional
(although hopefully rare) frame drops/dups.
V4L2 is a little better, as the frame is timestamped on the VSYNC pulse,
which improves the accuracy quite a bit.
Will adjusting quality, or size of captured image, etc improve this?
Not really - this is a function of the system rather than anything else
- when you see the drop count (the last digit on the line) increasing,
then you are approaching your systems limmitations, and playing around
with size/quality can help.
Actually more genreally, now that I have it working, which of the knobs
should I try tweaking to optimize it's operation?
Most things are pretty optimal already - you may need to play with the
DivX quality (-dq switch) to get the best possible quality for your CPU
power.
-justin
