JPEG and MPEG
05-Jun-94 07:55:39
Sb: #150780-JPEG and MPEG
Fm: Sam Yates 100237,323
To: John Toebes/SYSOP 70007,3467
Gday,
>> Actually, you can control how much space an MPEG stream will take up
>> based on the number of I frames
So you can. 🙂 I thought the discussion was about Video-CD applications.
I was under the impression that:
a) The MPEG-1 standard set down a 150KB stream.
b) The MPEG-1 specification allows you to have any stream size you like, but
the resulting stream will not be compatible with all MPEG-1 standard decoders
(eg. CD^32+FMV, CD-I etc).
>> Surprisingly, the size is not always the major factor in the quality
>> of the end result.
I have read that good MPEG encoding _REQUIRES_ operator intevention to decide
what should happen when the source material changes scenes quickly etc.
This makes me suspicious of the real time MPEG encoders that are availible.
(ie. They can't be high quality if operator intervention is required.)
The quality of the output is directly proportional to the experience/talent of
the operator.
Sam Yates Montrose, Victoria, Australia.
samyates@werple.apana.org.au