I am encoding H263 video.
I am currently trying to encode QCIF at 100kbps 15fps and with vbv buffer set 
to 500ms.
The fact is that I want to be able to control the vbv buffer size.

I have filled the AVCodecContext structure with the foollowing parameters :
- bit_rate = 93333
- bit_rate_tolerance = 66666
- time_base.num = 1
- time_base.denum = 15
- rc_max_rate = 100000
- rc_buffer_size = 100000 / 2 /* <=> bit_rate * 500ms <=> vbv buffer */ 

I have tried several values for rc_max_available_vbv_use and 
rc_min_vbv_overflow_use, but the vbv buffer size is never controlled.
Depending on the input stream, the calculated output vbv buffer size exceeds 1 
second.

Is there a mean to control the vbv buffer <=> to control the rc_max_rate ?


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