Opened 12 years ago
#2015 new defect
mencoder and lavc/HuffYUV audio issues
Reported by: | Owned by: | reimar | |
---|---|---|---|
Priority: | normal | Component: | mencoder |
Version: | unspecified | Severity: | normal |
Keywords: | Cc: | ||
Blocked By: | Blocking: | ||
Reproduced by developer: | no | Analyzed by developer: | no |
Description
If I try to capture a VHS tape to HuffYUV with lavc audio is either asynchronous or it's synchronous for the first 5 seconds and then disappears completely.
This happens if I use these commands or variants of them:
mencoder tv:// -tv driver=v4l2:normid=3:input=1:fps=25:amode=1:width=768:height=576:audiorate=48000 -oac lavc -ovc lavc -srate 48000 -af-adv
force=1:list=lavcresample=48000 -lavcopts
vcodec=huffyuv:format=422p:acodec=pcm_s16le -o movie.avi
mencoder tv:// -tv
driver=v4l2:normid=3:input=1:fps=25:amode=1:width=768:height=576:audiorate=48000
-oac pcm -ovc lavc -srate 48000 -lavcopts vcodec=huffyuv:format=422p -o
movie.avi
The same happens if I use mp2 or ac3 instead of pcm audio. So it's not an issue with the audio codec.
If I use this command audio is in sync:
mencoder tv:// -tv driver=v4l2:normid=3:input=1:width=768:height=576:amode=1:audiorate=48000
-ovc raw -oac pcm -o movie.avi
So this must be an issue with lavc and/or HuffYUV.
Since avidemux has problems with saving the resulting file of the last command with its copy options after cutting the video, the last command is not really a workaround for the lavc issue.