losing audio sync during video capture
Any suggestions or link pointers on how to get around losing audio sync during video capture? FreeBSD 7.1 bktr0: <BrookTree 878> mem 0xe8005000-0xe8005fff irq 17 at device 8.0 on pci0 bktr0: [GIANT-LOCKED] bktr0: [ITHREAD] bktr0: Hauppauge Model 44805 D111 bktr0: Hauppauge WinCast/TV, Philips PAL I tuner. MEncoder 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 3, Stepping: 4) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 #!/bin/sh length="-endpos 00:11:00" outfile=/home9/camcorder/camcorder.avi audio="-oac mp3lame -lameopts cbr:br=128" filter="-vf pp=lb,crop=738:560:16:8,scale=738:290" bitrate="vbitrate=8000" video="-fps 25 -ovc lavc -lavcopts vcodec=mpeg4:ildct:ilme:vhq:keyint=250" mencoder -noskip -mc 0 tv://0 ${length} ${filter} ${video}:${bitrate} / ${audio} -of avi -ffourcc DX50 -o ${outfile} While capturing, framerate gets up to 24.9fps. Sound is lagging by at least 0.5s within 60s of playback. Should I be trying to "fix" the above command line or trying some other codec? Do I need a better capture card? Ideally I'd like the output file to be in DV for editing in kino but I can't get past the problem of two streams being required. Googling for dv encoding points to using -tv options such as amode=1, forceaudio etc. but mencoder, despite having amode and forceaudio in the man page mencoder insists it doesn't understand those options. Do you need any other info to help me out/point me in the right direction? -- Dave
On Monday 19 October 2009, DaveG wrote:
Any suggestions or link pointers on how to get around losing audio sync during video capture?
FreeBSD 7.1
bktr0: <BrookTree 878> mem 0xe8005000-0xe8005fff irq 17 at device 8.0 on pci0 bktr0: [GIANT-LOCKED] bktr0: [ITHREAD] bktr0: Hauppauge Model 44805 D111 bktr0: Hauppauge WinCast/TV, Philips PAL I tuner.
MEncoder 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 3, Stepping: 4) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
#!/bin/sh length="-endpos 00:11:00" outfile=/home9/camcorder/camcorder.avi audio="-oac mp3lame -lameopts cbr:br=128" filter="-vf pp=lb,crop=738:560:16:8,scale=738:290" bitrate="vbitrate=8000" video="-fps 25 -ovc lavc -lavcopts vcodec=mpeg4:ildct:ilme:vhq:keyint=250" mencoder -noskip -mc 0 tv://0 ${length} ${filter} ${video}:${bitrate} / ${audio} -of avi -ffourcc DX50 -o ${outfile}
While capturing, framerate gets up to 24.9fps. Sound is lagging by at least 0.5s within 60s of playback.
Should I be trying to "fix" the above command line or trying some other codec? Do I need a better capture card?
Ideally I'd like the output file to be in DV for editing in kino but I can't get past the problem of two streams being required. Googling for dv encoding points to using -tv options such as amode=1, forceaudio etc. but mencoder, despite having amode and forceaudio in the man page mencoder insists it doesn't understand those options.
Do you need any other info to help me out/point me in the right direction?
Is anyone there? -- Dave
I recommend compiling a later version of mencoder from SVN snapshot. Your version is quite old. Sent from my iPhone On Dec 30, 2009, at 1:47 PM, DaveG <mplayer01@dgmm.net> wrote:
On Monday 19 October 2009, DaveG wrote:
Any suggestions or link pointers on how to get around losing audio sync during video capture?
FreeBSD 7.1
bktr0: <BrookTree 878> mem 0xe8005000-0xe8005fff irq 17 at device 8.0 on pci0 bktr0: [GIANT-LOCKED] bktr0: [ITHREAD] bktr0: Hauppauge Model 44805 D111 bktr0: Hauppauge WinCast/TV, Philips PAL I tuner.
MEncoder 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 3, Stepping: 4) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
#!/bin/sh length="-endpos 00:11:00" outfile=/home9/camcorder/camcorder.avi audio="-oac mp3lame -lameopts cbr:br=128" filter="-vf pp=lb,crop=738:560:16:8,scale=738:290" bitrate="vbitrate=8000" video="-fps 25 -ovc lavc -lavcopts vcodec=mpeg4:ildct:ilme:vhq:keyint=250" mencoder -noskip -mc 0 tv://0 ${length} ${filter} ${video}:$ {bitrate} / ${audio} -of avi -ffourcc DX50 -o ${outfile}
While capturing, framerate gets up to 24.9fps. Sound is lagging by at least 0.5s within 60s of playback.
Should I be trying to "fix" the above command line or trying some other codec? Do I need a better capture card?
Ideally I'd like the output file to be in DV for editing in kino but I can't get past the problem of two streams being required. Googling for dv encoding points to using -tv options such as amode=1, forceaudio etc. but mencoder, despite having amode and forceaudio in the man page mencoder insists it doesn't understand those options.
Do you need any other info to help me out/point me in the right direction?
Is anyone there?
-- Dave _______________________________________________ MEncoder-users mailing list MEncoder-users@mplayerhq.hu https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
On Wednesday 30 December 2009, Jarred Nicholls wrote:
I recommend compiling a later version of mencoder from SVN snapshot. Your version is quite old.
Sent from my iPhone
That's a good point. I'm using the "latest" from FreeBSD ports. I've also since found that /some/ but not all audio applications are stuttering, mplayer not included. I need to find the cause of that in case it's affecting things.
On Dec 30, 2009, at 1:47 PM, DaveG <mplayer01@dgmm.net> wrote:
On Monday 19 October 2009, DaveG wrote:
Any suggestions or link pointers on how to get around losing audio sync during video capture?
FreeBSD 7.1
bktr0: <BrookTree 878> mem 0xe8005000-0xe8005fff irq 17 at device 8.0 on pci0 bktr0: [GIANT-LOCKED] bktr0: [ITHREAD] bktr0: Hauppauge Model 44805 D111 bktr0: Hauppauge WinCast/TV, Philips PAL I tuner.
MEncoder 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 3, Stepping: 4) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
#!/bin/sh length="-endpos 00:11:00" outfile=/home9/camcorder/camcorder.avi audio="-oac mp3lame -lameopts cbr:br=128" filter="-vf pp=lb,crop=738:560:16:8,scale=738:290" bitrate="vbitrate=8000" video="-fps 25 -ovc lavc -lavcopts vcodec=mpeg4:ildct:ilme:vhq:keyint=250" mencoder -noskip -mc 0 tv://0 ${length} ${filter} ${video}:$ {bitrate} / ${audio} -of avi -ffourcc DX50 -o ${outfile}
While capturing, framerate gets up to 24.9fps. Sound is lagging by at least 0.5s within 60s of playback.
Should I be trying to "fix" the above command line or trying some other codec? Do I need a better capture card?
Ideally I'd like the output file to be in DV for editing in kino but I can't get past the problem of two streams being required. Googling for dv encoding points to using -tv options such as amode=1, forceaudio etc. but mencoder, despite having amode and forceaudio in the man page mencoder insists it doesn't understand those options.
Do you need any other info to help me out/point me in the right direction?
Is anyone there?
-- Dave _______________________________________________ MEncoder-users mailing list MEncoder-users@mplayerhq.hu https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
_______________________________________________ MEncoder-users mailing list MEncoder-users@mplayerhq.hu https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
-- Dave
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DaveG -
Jarred Nicholls