What is Segment Re-Encoding?
Suppose you have a VBR encode and you find a glitch on a few frames what are you to do? Go back and re-encode the whole video and hope for the best? If your encoder features segment re-encoding, you can tell it to grab just the frames (or GOPs, to be completely accurate) that have problems, and re-encode them at a new bit rate. On big-budget titles like major movie releases, they will actually view the entire movie frame by frame looking for any possible problem during their quality-assurance process. As they find problems (youd be surprised how many there are when youre paying this much attention to detail), they mark them and set a new bitrate. When finished, they hit “go” and the encoder re-encodes just the segments they selected at the specified bitrates, integrating it with the existing MPEG-2 (sometimes as a reference file).
