Hi!
I was woundering about peoples experience with different codec's when
grabbing from a v4l device to record a PAL input in best possible
quality. I have tried nvrec, ffmpeg, and transcode. I have used options
like:
# transcode -i /dev/video0 -x v4l --omport_v4l 1 -c 00:0015 -g 768x576
-y divx5 -z -o test.avi
# ffmpeg -vd /dev/video0 -r 25 -an -s 768x576 -hq -vc 1 -t 300 test.mpg
I can't use an MPEG-chip card when I want to analyse the raw frame
before doing the decoding (i.e. motion detection). Someone said that I
couldn't do this with the v4l interface, so I'm using a Pinnacle PCTV
card with the bttv driver.
I'm using an AMD XP2600+ with 512MB 333MHz RAM, MSI motherboard with
KT400 chipset, IDE disks (possible with software RAID1), running
Slackware9.0, kernel 2.4.20.
Do anyone have a comment or some references?
Thanks!
- Martin O.
