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barry
Apprentice
Joined: 01 May 2002
Posts: 170
Location: UK
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 Posted: Tue Dec 07, 2004 12:00 am Post subject: mencoder - MP3 audio slightly out of sync |
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I've been encoding some DVDs using mencoder (1.0_pre5 and 1.0_pre4) and I've noticed that when using MP3 audio (-oac mp3lame), there are slight sync problems - maybe 0.5 seconds out here and there.
If I use AC3 pass through (-oac copy) or I use AC3 encoding (eg -oac lavc -lavcopts acodec=ac3:abitrate=128), there's no problem at all.
I've tried a brand new installation of Gentoo, and the same problem exists. Anyone else seeing this? |
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SubAtomic
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Joined: 20 Dec 2003
Posts: 255
Location: Hobart, TAS, Australia
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| Posted: Tue Dec 07, 2004 1:48 am Post subject: |
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I havent had any sync probs with mencoder, however I did have sync problems with mplayer and DVB.
Adding | Code: | | :adevice=/dev/sound/dsp |
to my mplayer commands fixed the audio sync problem.
Edit: found the original thread that solved my problems...
https://forums.gentoo.org/viewtopic.php?t=99073
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"The real romance is out ahead and yet to come. The computer revolution hasn't started yet. Don't be misled by the enormous flow of money into bad defacto standards for unsophisticated buyers using poor adaptations of incomplete ideas." -- Alan Kay |
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barry
Apprentice
Joined: 01 May 2002
Posts: 170
Location: UK
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| Posted: Wed Dec 08, 2004 12:44 pm Post subject: |
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| It looks like it may be a problem with playback with mplayer. I tried a file that I encoded with mencoder with Xine and the a/v sync looks fine. |
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