[FFmpeg-devel] H.264 interlaced PAFF development and donations

[Loren Merritt]

On Mon, 2 Jul 2007, Gabriel Bouvigne wrote:

> PAFF is actually not defined into the H.264 standard. It means Picture
> Adaptive Frame/Field, to have an acronym similar to MBAFF (Macroblock
> Adaptive Frame/Field).
>
> When encoding into interlaced mode (ie you are using interlacing but not
> MBAFF), you have to mention into the slice header if the slice is
> progressive or interlaced. Thus the standard allows you to use a mix of
> progressive and interlaced frames when using the interlaced mode.

Furthermore, you can use PAFF and MBAFF in the same stream. If MBAFF is 
enabled, the slice header says whether the slice is MBAFF or interlaced.

--Loren Merritt