[FFmpeg-user] Audio sync issues when transcoding Hauppauge HDPVR content

[Scott Naef]

Carl,

Thank you for the help.  My sample source file input.mpg is at:
https://drive.google.com/uc?id=0BzSQuUjfkFN1a191MG9acnFPc3M&export=download

My resulting output.mp4 is at:
https://drive.google.com/?tab=oo&authuser=0#folders/0BzSQuUjfkFN1OWIyNEQyRndmWG8

My ffmpeg command is:
ffmpeg  -i input.mpg -async 1 -y -vcodec libx264 -r 25 -b:v 1268k -s 
512x368 -acodec libmp3lame -threads 2 output.mp4

Ouput log:
https://docs.google.com/file/d/0BzSQuUjfkFN1N0VsLXVud2tsV0E/edit


Tracy,

I tried your -vsync 1 option but it did not work wither.  I also tried 
-vsync 0 and interestingly this option produced a slew of PTS / DTS 
conflict errors ( log is at: 
https://docs.google.com/file/d/0BzSQuUjfkFN1U1FaME43RjdBYTQ/edit ) but 
that did not work either.

-Scott





On 1/15/2013 2:35 PM, Carl Eugen Hoyos wrote:
> Scott Naef <snaef1 <at> mail.brookdalecc.edu> writes:
>
>> I have tried several options in FFMPEG such as
>> -async 1 but nothing I try seems to work.  I always
>> end up with about 1.5 second delay in video from audio.
> Please provide a sample that is long enough to
> easily (!) see the desync.
>
> And please provide the command line you tested
> for transcoding (ideally for the sample you
> provide) together with complete, uncut console
> output.
>
> Carl Eugen
>
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