Warp wrote:
> 
>   Btw, if the last frame would be a B-frame, what does the encoder do?
> How can it create it since it doesn't have the following I or P frame?

It skips that frame coding spec and goes to the next non-B spec.  For
instance, if you specify

BBIBBP

in your CTL file, the frame type in a 24-frame animation will be 
assigned this way:

IBB PBB IBB PBB IBB PBB IBB PBI

If your CTL specified this:

BBIBBPBBP

The frame types would be assigned like this:

IBB PBB PBB IBB PBB PBB IBB PBP

If you use option -v1 in the CMPEG command line, it will tell you what
frame type is being used for each frame.

Regards,
John

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