From: Bernhard P. <sha...@ut...> - 2007-12-26 11:16:34
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Hallo >> From my guess you use a bttv based card ? >> If you use a bttv based card, you need to use a command like that: >> lavrec -f a -i p -g 352x288 -q 80 -R l --software-encoding test.avi > lavrec -f a -g 720x576 -s -q 80 -U -r 44100 -R l --software-encoding raw.avi > Works, but with stuttering audio. Audio is fine if I either drop the > resolution, go mono or reduce the sampling rate to 22000. Have you tried lowering the resoution ? For example to 480x576. But with full audio datarate ? If that works the problem is the "slow" CPU. >> streamer can also create mjpeg encoded AVI's. > Yes, but I am having trouble with that - it seems to use more cpu than lavrec > and just give up at some point. Think I also had audio sync problems - just > having another go to confirm. > streamer -t 180:00 -r 25 -s 720x576 -o raw.avi -f mjpeg -F stereo Haven't used streamer for a long time. so I can't tell. > CPU usage it a little high at around 85% - on a 2.5GHz athalon. That load is something about the expected. I think I had a similair level of load when I used it on my Athlon 2,13Ghz Athlon. > Either solution would work well for me if I can caputure to something that > uses a bit less disk space than raw. I can capute raw fine - its just that > the file sizes are a bit too large for comfort. > > I'm wondering if I got something like this: > > http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=318489 > > whether I could use the built in hardware encoder. My existing card is > saa7134 based. Not sure if hardware encoding can be done with that card. No Idea. From the description you would get a MPEG2 Video. And that won't work with lavrec. Many people use a a Analog -> FireWire box. Maybe the most common box is the Canopus ADVC110. You would record DV using Kino: http://www.kinodv.org/ auf hoffentlich bald, Berni the Chaos of Woodquarter Email: sha...@ut... www: http://www.lysator.liu.se/~gz/bernhard |