how many b-frames should i use or any at all?
thanks.
b-frames
Moderator: HuggiL
Re: b-frames
It depends on what you want to do -- how much compression you want.
B-frames are more efficient, ie smaller size for similar quality, and unlike P-frames they are used to construct the viewed frame by predictions from both previous and later frames -- the predictions are Bi-directional.
For example, in a DVD the video stream is MPEG2 with each repeating group (GOP) beginning with an I-frame (compressed from the raw data like JPEG compression) followed 3-4 PBB groups.
B-frames are more efficient, ie smaller size for similar quality, and unlike P-frames they are used to construct the viewed frame by predictions from both previous and later frames -- the predictions are Bi-directional.
For example, in a DVD the video stream is MPEG2 with each repeating group (GOP) beginning with an I-frame (compressed from the raw data like JPEG compression) followed 3-4 PBB groups.
Have you checked out the Tips & Guides for MediaCoder? Try: http://forum.mediacoderhq.com/viewtopic.php?f=17&t=8061
Also, get older builds at: http://www.videohelp.com/tools/MediaCoder/old-versions#download
Also, get older builds at: http://www.videohelp.com/tools/MediaCoder/old-versions#download
Re: b-frames
Using B-frames is generally helpful for better compression without losing much quality. If you’re looking to balance file size and quality, setting 2-3 B-frames should work well, but it also depends on your specific compression needs. Before I was using an online jpeg compressor to compress multiple images.