Do something like this: MENCODER="nice -n 19 mencoder" $MENCODER -oac copy -ovc copy /dev/video0 -endpos $2 -o avi/"$1".mpeg $MENCODER -ovc frameno -o frameno.avi -oac mp3lame -lameopts cbr:br=128 avi/"$1".mpeg $MENCODER -oac mp3lame -lameopts cbr:br=128 -o /dev/null -ovc lavc -lavcopts vcodec=msmpeg4:vbitrate=1000:vhq:vpass=1 -vop scale=720:480 avi/"$1".mpeg $MENCODER -oac mp3lame -lameopts cbr:br=128 -o avi/"$1".avi -ovc lavc -lavcopts vcodec=msmpeg4:vbitrate=1000:vhq:vpass=2 -vop scale=720:480 avi/"$1".mpeg
no guarantees!! ----- Original Message ----- From: "Tim" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, June 09, 2006 12:29 PM Subject: [ivtv-users] PVR-150 Compression > Greets! > > first off, to be quite honest, i'm not real sure what i'm doing at this > point, so apologies in advance if this question is lame and/or should be > directed somewhere else. hopefully, if any of the above is true, someone > will be kind enough to point me in the right direction. :) oh yeah, ivtv > rocks and has made me very happy to date (an entire week)!! > > i recently purchased a WinTV-PVR-150 because: > 1)Linux/ivtv will happily use it > 2)built-in hardware MPEG-2 encoder > 3)priced right ($100/US) > > i've been looking around here and there trying to find the best way to get > the video from some DV's i recorded last year to my linux box for > converting to DVDs via Composite 1 (i have yet to use S-Vid), and the best > that i've come up with so far is something like the following in a script: > > mencoder -vf scale=720:480 -vfm ffmpeg -oac mp3lame -of avi \ > -ovc copy /dev/video0 -endpos $2 -o avi/"$1".avi > (i don't know if i should use -oac copy instead, or if it even matters?) > > this seems to work well, but then i have to turn around and issue this: > > mencoder -ovc copy "$1".avi -forceidx -oac copy \ > -o "$1"copy.avi > > then i do any cutting that's necessary in case i've recorded too much > "blue screen" at the end of the tape. > > for an hour's worth of video, this results in a file 3GB+ > i'm guessing i'd get the same results if i just issued a: > cat /dev/video0 >output.mpg ??? > > i successfully have Myth set up and actually recorded one of my DV's and > it was a bit smaller, i think about 2.3G and i'm pretty sure it was at > least an hour. the problem i see with using Myth to do this, is that i'd > rather not sit there and wait to cue up the DV when Myth starts recording. > :) unfortunately, i don't have any idea what Myth is doing to the file to > make it smaller in size than what i'm doing in my script. > > are the file size(s) i'm seeing normal? is there something i should be > setting via ivtvctl? > > i have a feeling that i'm off topic here which is not my intent, but i'm > just not sure where else to go for PVR-150 issues/questions which in the > end quite possibly is *not* my question, but in fact is an encoder > question?? > > Best Regards, > -=tim > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
