[M4IF Technotes] Compression factor to determine bit rates

[Nikki Cranley]

Hi all,
I managed to do some analysis on the compression factor thing! I'm not particularly fond of the term but Im trying to do a phD and need to model and detail everything. Im trying to build a system that is not codec specific - therefore for the codec in question that Im actually using, I have to try and explain how its variance affects the system and abstract from there. 
The main problem was that I was interested in the encoding parameters, so when a target bit rate is specified I figured there must be some trade-off (whether perceptible or not) with the encoding configuration. 
However - I have come up with an equation that describes the codec Im using which relates, frame rate, resolution and scene complexity such as SI and TI values. The results are incredibly accurate for predicting the output bit rate for this codec with various content. 
I'll have to experiment and see how it works for other codecs but anyway... 
just like to thank you all for your help.
Rgds,
Nikki
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20030129/5ce5d4b4/attachment.html