Creating Delta Frame with no information in it with divx3.11 (maybe other codecs too)

[esby]

I've been thinking about the Dup filter for avs.
What dup tries to do is to copy similar frames,

But dup is relying on the encoder capacity
to detect same frame...

I'm wondering if it would not be more efficient
to use some sort of duplication in the encoder
according to a list of frame.

I'm taking the example of divx3.11 & the ecf file.

supposing we have from frames 15 to 25 'the same frame',
it would be more efficient in my way,
to encode frame 25 normally,
then to simulate encoding frame 16 to 26
using DF containing no image changes.

I think this could be applied to xvid too.

Does anyone know how to create such DeltaFrame containing no data?
(Which are different from dropped frame)?
Is there a way to do that via vfw?
Thanks in advance for any idea...

esby

[Belgabor]

Iirc correctly what you propose was the initial intent of MarcFD when he created his CopySame Filter (tagging frames so they would be eventually 'dropped' by the codec), iirc further the xvid ppl said that the second+ frame will be tiny anyways because of the lack of motion (effectively being what you suggest automatically).