File Splitting with Tmpgenc

[edsmith77]

Good Morning to All.
This is a question for the experts on this site, I do need your insight. My problem is very similar to MANY that I have seen posted before but without an explanation as to why.
Problem. I have an std SVCD compliant file that unfortunately, I must split in order to fit onto 2 CDRs. The file plays perfectly (at least to my satisfaction) as a whole file. However, when I use Tmpgenc Merge & Cut option, my resulting files always seem to have audio sync problems. Now on the panel where the file to be split is specified, there is a drop down box that has several different options. The two SVCD options are both for VBR streams. My source is CBR. Thus, during the splitting process is it possible that this could be introducing the audio sync problem.???? My reasoning is that (and probably faulty, hence the need for the experts) during the splitting process the file is demuxed and then remuxed and the points I have specified. Could the remuxing of a CBR steam to VBR be the culprit????? To me (a very simple minded soul), should there not be an option for an SVCD CBR Merge & Cut????

Any other ideas????

Ed

[El Torro]

hmm, why don't u try BBmpeg?

[wee haggis]

I always split during the encode process (ie: Source Range ..mark part 1... Save Project..repeat for Part2...Batch Encode.....voila...a 2 equal part vcd or svcd ready to be burned).
Has'nt failed me yet.

[edsmith77]

Mr Torro,
I did try bbmpeg, however, I am afraid I did not have something set right. When I loaded the mpg to split and specified a frame count that was exactly half of what the total was and started it off doing its thing. I am greeted with an estimated time of 11:56 (thats eleven hours and 56 minutes). Thus, I think I did not do something right. I loaded the file without problems. Then in the center section of the window, I specified the frames from 0 to 99012 (which is 1/2 of 199024). Did not specify any cropping and changed the "Convert output resolution to " FIXED. That is I did not want any change in anything, size, resolution or whatever. I only wanted to split the file into two parts. Finished by hitting the "Start Encoding" button. It starts by stripping out the video stream, and then presumably it was going to do the audio and then probably remux them together again. However, when it tells me that it will take about 11 hours and 56 minutes to do the job. I stopped the program.
There just has to have been an error on my part and / or there has to be a better way.

Any corrections or modification to what I had done. Seems likely that I did not do something right???


Ed

[edsmith77]

Mr. Haggis,
I have been down that road as well with the same results. Tmpgenc just does not seem to handle my captured mpg1 and mpg2 files very well. If I give tmpgenc avi files to eat, it just loves em and I like the output as well. However, my mpg1 and mpg2 captured files seems to give tmpgenc gas.
Maybe it is my capture card. I am using the ATI Rage Fury Pro. It does capture to avi, mpg1 and mpg2 using MMC 7.1 and in just about any variant in between. The source plays well in all of the software players. No problems there. However, trying to record these captures to disc is another problem. VCDEasy chokes on the mpg1 and or mpg2 streams. Nero complains as well because the file is to big. VCDEasy didnot complain about the file size, it just kept complaining about some undefined entry point over and over and over. In many thousands of times before I stopped the program. ECDC 5 doesn't want to do the job either.

Whats a person to do. All I wanted was to split a file in half and maintain the synchroniztion between audio and video in the two halves.

Ed

[wee haggis]

http://www.digital-digest.com/dvd/downloads/mpegtool.html
http://www.digital-digest.com/dvd/downloads/mpeg2splitter.html

[edsmith77]

haggis,
thanks for the links and especially your time. I know there are lots of folks clammering for help and only so many knowledgable people available or more specifically those that actually offer up help.

Unfortunately, I have been to the mpegtool site and tried their solution. But all I get is some TTrack error for which I can not find any explanation or other solution help.

The other link goes to a great sounding program but it is for a MAC. I am not a MAC user and my system does not know how to handle ".sit" files. But I am willing to try almost anything. Is there a pc util that reads these .sit files. I would presume that they are in some type of MAC compressed form. I just do not know how to use the software at the provided link.

I did experiment with bbmpeg quite a bit last nite. It does split the file along frame boundaries but the resulting audio is unintelligible.

I would hate to just give up and only capture in AVI when there are other more tidy solutions potentially available.

Still need some help,

[edsmith77]

UPDATE. MORE DETAILS.

I went back to Tmpgenc and did a full demux of the original mpg file vice a simple demux. What I found was:
1 - a video stream
2 - an audio stream
3 - another audio stream called padding
4 - another audio stream called private

Maybe I need to remux in the padding and/or private stream. Any thoughts by anyone.
I have not figured out how to do that but ...... am open to any and all ideas.

Remember my original goal was to cut this mpg file in half and maintain audio sync. I do not want to mess with anything else. Just cut the mpg in half and keep the audio in sync with both halves.