[M4IF Technotes] Downloadable standard MPEG test sequences

[Dave Singer]

At 15:33 +0200 7/12/02, Olivier Amato wrote:
>Ben,
>
>>      I think the "right" solution would be for Apple or someone else to
>write
>>  a QuickTime import component for .yuv, and make it part of the component
>>  download program.
>
>Unfortunately, data in .yuv sequences are not always organized in the same
>way ... even for the same color space. Some are organized by planes and
>others mix YUV samples for each pixel. I don't know if there is an "official
>way" to produce .yuv sequences ( since there is no header and real file
>format ) !!??

quite.  when we have worked with them in QuickTime, we write one-off 
software that handles the format in question.  Also, special handling 
of timing and size is usually needed (you generally hope to be told 
what the intended size and timing is, and have to input that manually 
somehow).  We have all the codecs in QT (quite a few variants of YUV 
etc.) -- it's the reading/import process which is a little squidgy.
-- 
David Singer
Apple Computer/QuickTime