malpaso
19th July 2004, 10:30
I have been trying to rip certain films to just one DVD-R which means often having to use a bit of compression. i rip with smartripper, demultiplex the ac3 audio and m2v video streams from the vob using tmpgenc, then merge the ac3 files together to one stream and the m2v files to one stream too. I then compress the video stream using 2-pass VBR to a size that will fit on the disc with the audio stream. however, when trying to multiplex the two streams back together (the ac3 stream and the compressed video stream) with tmpgenc, i get syncing problems which upon repetition of the process happen in exactly the same place and can't be solved. For the one particular film that caused me most grief, the audio is fine till half way through then goes about 1/3 second out and remains so for the rest of the film. I also tried leaving the multiplexing to the TMPG DVD Author program, and the same problem arose. The same problem arose again when using IFOedit. I imagine the two TMPG programs may use the same software for encoding so that would be why the problem arose, but IFOedit caused the same problem. I then remembered that i actually had a different mpeg encoder, bbmpeg which comes with FlaskMPEG. It takes twice as long to use but produced perfectly syncing video.
However, I used the same process WITHOUT compressing the video for other DVDs and most of them are fine, but a few seem to go in and out of sync very slightly very regularly to the extent that you almost don't notice.
My problem is that I can't understand what is going wrong, why some streams multiplex fine and others don't, why compressed video is a problem, and why TMPGEnc and TMPG DVD Author that I paid for don't work properly while the free bbmpeg enc is the only thing that i have had success with. This program takes ages, the quality doesn't seem great and is very temperemental anyway so is not brilliant anyway.
I would appreciate any help and I hope I haven't overlooked a glaringly obvious problem. I'm not sure if it's relevant but I don't imagine the computer I'm using is a problem performance wise since it's a P4 with plenty of RAM and HDD space.
However, I used the same process WITHOUT compressing the video for other DVDs and most of them are fine, but a few seem to go in and out of sync very slightly very regularly to the extent that you almost don't notice.
My problem is that I can't understand what is going wrong, why some streams multiplex fine and others don't, why compressed video is a problem, and why TMPGEnc and TMPG DVD Author that I paid for don't work properly while the free bbmpeg enc is the only thing that i have had success with. This program takes ages, the quality doesn't seem great and is very temperemental anyway so is not brilliant anyway.
I would appreciate any help and I hope I haven't overlooked a glaringly obvious problem. I'm not sure if it's relevant but I don't imagine the computer I'm using is a problem performance wise since it's a P4 with plenty of RAM and HDD space.