[MEncoder-users] unable to encode to dvvideo - can't initialize dv format!

Jelle de Jong jelledejong at powercraft.nl
Sun Mar 15 18:08:39 CET 2009

Reimar � wrote:
> On Sun, Mar 15, 2009 at 04:55:43PM +0100, Jelle de Jong wrote:
>> Reimar � wrote:
>>> On Sun, Mar 15, 2009 at 01:38:58AM +0100, Jelle de Jong wrote:
>>>> I still cant get the audio and video in sync even when trying to mach the
>>>> -ofps to the displayed value of mencoder, but I think i will start a new
>>>> mail tread over this.
>>> I guess your v4l2 driver does not set the buffer timestamp values.
>>> Try recording with "-msglevel tv=9" that should print the timing values
>>> mencoder detects.
>>> I'd also verify that the v4l2 audio device indeed can record at 48kHz
>>> and doesn't just claim to why actually recording at 44.1kHz, thus
>>> delivering audio too slowly.
>>> And the DV encoding speed can't really be an issue, I can encode at > 150 fps
>>> even with my "AMD Athlon(tm) 64 X2 Dual Core Processor 3800+".
>> See the attached output9.log and output10.log.
>> Issues remain ;-(
> Use "-oac pcm" lavc pcm encoders obviously can't currently be used, I
> guess they end up encoding one sample at a time or something stupid like
> that.

see output11.log in the attachment tar.gz. Still complete out of sync
audio and video. It is perfectly synchronized when only watching ;-(

Best regards,


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