[Kdenlive-devel] DV rendering seems to be broken for PAL-WIDE

[Jean-Michel Pouré]

On Thu, 2008-12-25 at 21:24 -0800, Dan Dennedy wrote:
> This is fixed now in MLT.

Thank you very much. I will update export profiles accordingly.

> This could be considered a bug, but the whole area around correct
> sample aspect ratio for DV, DVD and similar formats is rather nasty.
> Basically, the sample aspect ratio FFmpeg uses for DV is not
> mathmetically convertable to display ratio using the resolution like
> every other format. This is all really messy, and the details are
> tiresome and unpleasant for me to go into on a Christmas night. But
> basically, the FFmpeg DV decoder uses these more proper ratios, but
> the encoder, being generic and agnostic to its source uses a simple
> mathematical formula to determine if it is wide. Well, the proper wide
> PAL sample aspect ratio fails this test! I am able to work around it
> in MLT.
Thanks to MLT! I hope that some day someone picks up MLT and Inigo to
make it the default player in GNU/Linux. 

Bye. Jean-Michel