[Libav-user] how to predict the size of destination clips

[Peter Steinbach]

> AVCodecContext->max_bitrate * (duration_in_secs / 8)   [ bytes ]

Are you sure about this? What if I encode only random noise? Does 
max_bitrate take this into account as I would expect that you'll have 
something like:

upper_bound_in_bytes = input_in_bytes + encoder_overhead_in_bytes

Best,
P