[Ffmpeg-devel] [PATCH] mjpeg a support

Baptiste Coudurier baptiste.coudurier
Thu Oct 5 11:58:36 CEST 2006

Michael Niedermayer wrote:
> Hi
> On Thu, Oct 05, 2006 at 11:16:49AM +0200, Baptiste Coudurier wrote:
>> Hi,
>> This patch add support for creating 'mjpeg a' bitstream to fit into mov
>> container. Quicktime sucessfully plays streams in either 420 or 422.
> such container specific variants of codecs should be implemented with
> bitstream filters not by changeing the encoder
> such a bitstream filter is needed anyway to move mjpeg between mov
> and non-mov containers
> [...]

Well, APPn markers are standard. It seems you can copy mjpega stream
from mov to avi without touching it. Decoder should skip APPn marker.

Bitstream filter anyway would have to parse mjpeg stream to look for
markers and move whole frame to insert 8 bytes. Don't you think that is
really bloated ?

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