[FFmpeg-devel] [PATCH] nvenc: Compensate for hardware trying to mess with aspect ratio of DVD content.
kierank at obe.tv
Sat Jan 17 21:11:33 CET 2015
On 17 January 2015 at 20:01, Philip Langdale <philipl at overt.org> wrote:
> There is a long sad story behind all this, but it's somewhat ambiguous as to
> whether DVD content should be treated as 720 pixels wide or 704 pixels, with
> 16 pixels cut off. If you decide is should be 704 pixels wide, you need to
> adjust the sample aspect ratio to keep the final display aspect ratio correct.
BT601 makes this very clear. The active picture is 702 pixels.
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