[Mp4-tech] Bitrate Vs Delay

[Hans-Juergen Bardenhagen]

Hi Gary,
on 20.02.04, 12:14 local time (received 21.02.04, 05:06 GMT+1) you wrote:
> Higher encoding bit rate does not mean higher delay.  In fact one of
> the best ways to reduce delay is to increase the channel bit rate
> that you're operating over, which allows frame rate to increase and
> other sources of delay to be reduced.
>
> For example, uncompressed PCM video has very high bit rate and very
> low delay.

OK, but Ravi gave an example of a highly compressing codec, probably a  
wideband speech codec like AMR or CELP and was not referring to  
uncompressed speech content. But you're right, I should have written  
"The higher the encoding complexity is...", e.g. due to additional  
coding tools with a higher complexity in order to enhance the sound  
quality for a given input file or bitstream at the same bitrate.
I think the important thing for him to know is that there are codecs (or  
object types of a codec) specialized for a low delay and others for a  
high sound quality, and that these two properties are not easy to match  
at a given bitrate.
ZZee ya, Hans-Jürgen