Wondering on your opinions if Quenc with dvd rebuilder is the best transcoder available. according to http://www.10ts.com/copy_dvd9_dvd5.htm it is, but I wanted to hear your opinions.
Uncas (or anyone reading this who knows the answer) - What is the difference between the ENcoder, and the Transcoders? Are the encoders the ones that help take out encryptions?
an mpeg stream consists of GOPs - Groups Of Pictures
I,P and B frames form a gop, which might look something like this.
I-B-B-P-B-B-P-B-B-P-B-B-P-B-B-I-B-B-P-B-B....
I or Intra-frames contain ALL picture information or residual data only
these frames can be reconstructed without reference to other frames
P or Predictive frames contain residual data and MV/motion vectors
the picture will have to be reconstructed with reference to the previous I or P frame
B or Bidirectional-predictive frames again contain residual data + MV
the pictures wil have to be reconstructed with reference to past AND future I or P frames
a TRANSCODER removes some of the residual data by means of a requantization algorithm but leaves MV untouched
ENCODER like CCE, procoder, hc enc or quenc etc encode the entire frame and recalculate motion vectors which takes much more time then compressing only certain data in the frames
thus transcoders work faster but encoders will provide better quality the more compression will have to be applied
That was put beautifually - even though I dont YET FULLY understand all the details, I certainly did understand the summation of it - I appreciate you explaining that to me - in time as I continue to do more and more - I'll understand the smaller details of it also.
