Going mad trying to demux a TS

[twinaleblood]

Hi,
I'm desperately trying to demux some TS files I got from my recorder to no avail.
The thing is: when I try with ProjectX I get thousands of errors, usually like this one:

dropping GOP# 605 @ orig.PTS 06:32:49.006 (2121210555), errorcode: 24

Then the resulting file is full of cuts.

I asked on ProjectX's forum, and I've been told that the software only support frame encoded picture data (and the single fields in ATSC framerate correction) while my video stream seems to be field encoded.

I tried with other programs too but with no luck. When I try to join and remux as mpeg2 with HDTVtoMPEG2 the resulting video is jerky (the same happens if I use it simply to join my files as one bigger TS).

Any ideas? What can I try?

I uploaded a sample here: http://www.mediafire.com/?92uvw0ct80e3o24

I'm also attaching ProjectX's log for this file and the info file I got from Mediainfo, so you can see exactly what kind of stream it is.

Thanks a lot in advance for any help.

[poisondeathray]

dgindex => file => save project and demux video

[twinaleblood]

Bro, you're DA MAN!
It works perfectly.
Thank you very much, I've been trying to do that for a f'n week or so.
Now, one more thing if you (or anybody else) can help: this program doesn't have the cut option, so how can I work this out?
I have these TS files (divided in 8 parts) with a bunch of episodes of a tv show. I want to cut the single episodes and then demux em with DGIndex to do a dvd.

[poisondeathray]

There are better utilities to cut mpeg2video e.g. mpg2cut2 (free), videoredo , or avidemux

But you can use use the "[" and "]" buttons in the GUI to mark in/out segments to cut . It's not frame accurate, you can only cut on GOP boundaries .

Videoredo is frame accurate and only re-encodes those few frames around a cut site (it's called "smart rendering")

[twinaleblood]

Sounds good. I'm trying the [ ] buttons and If the result is not satysfying I'll go with mpg2cut2.
Thanks a lot again!

[manono]

I have these TS files (divided in 8 parts) with a bunch of episodes of a tv show. I want to cut the single episodes and then demux em with DGIndex to do a dvd.

Done properly you don't even have to demux. Just create the D2V project file and use it in an AviSynth script which you'll then feed directly into your MPEG-2 encoder. It's all explained in the docs included in the DGMPGDec package. DGIndex is way more useful for indexing your TS rather than for just demuxing. And use the [ and ] buttons to index only the episodes themselves.

[twinaleblood]

Hi there.
I'm upping this thread i started months ago cause I have a problem somewhat related: when i author and remux (with dvd-lab pro2) the files i previously demuxed with DGindex, the result is a complete mess: the video is not smooth (like you're frequently pressing the pause button for, like, half a second) and the audio is totally out of sync (but i guess this is the easiest thing to fix, as the software allows me to edit the audio delay).

Any hints? I can upload a small video sample if needed.

[manono]

If it plays smoothly after being demuxed, then the fault isn't with DGIndex. If it plays jerky then there's something wrong with your source files.

I don't use DVD-Lab Pro, but you could do a test author using Muxman to test the results there, which might help to narrow the source of the problem.

[twinaleblood]

Yeah, I forgot to tell you that the demuxed files work fine, so the problem obiviously is not coming from DGindex. I'm going to try Muxman and we'll see the results. As usual, thanks for your answer.

[twinaleblood]

Ok, I muxed it with muxman and when it was done I got a message like "there's 1 oddity, check the log to find out more". I cant find where the log file is, but i checked the muxed video and it works nice, so I guess I can say the problem is solved.

[manono]

Ok, I muxed it with muxman and when it was done I got a message like "there's 1 oddity, check the log to find out more". I cant find where the log file is, but i checked the muxed video and it works nice, so I guess I can say the problem is solved.

Hehe, it may not be solved if you're also using DVD-Lab Pro for making menus as well as authoring for DVD. If only muxing, Muxman is the best one there is.

The muxman.log is found in the root of the 'C' drive.

[twinaleblood]

This is the problem in the log:

Bitrate - avg: 3010615, min: 2491733 (lba 217616), max: 4130133 (lba 0).
Shortest GOP has 0 fields, longest GOP has 46 fields.
Field structure pictures were detected.
Fields: 63204, VOBU: 2572, Sectors: 232279.
Largest GOP of 46 fields exceeds DVD specification of 30, resulting DVD is non-standard.

How can I deal with this gop thing?

[manono]

You didn't reencode this thing? Only remuxed it after cutting the episodes into pieces? Did Muxman even give you a playable DVD? If not, and if you only remuxed the M2V from the DVD, then you might have to author using IFOEdit, which takes the assets in the same format as Muxman. It's more forgiving. Broadcast video doesn't have to abide by the DVD restrictions.

If you're reencoding, then you have to set the GOPs properly. 36 is the max number of fields per GOP for NTSC DVD, 30 for PAL.

[twinaleblood]

I didn't reencode it on purpose. I mean, to avoid loss of quality.
And yes, muxman also say the dvd is non-standard. Is there a way to do a dvd from this kind of files without reencoding them (hence losing their original quality)?

[manono]

There's no way to fix the GOP length without reencoding, if that's what you're asking. You didn't answer whether or not you got a playable DVD out of it, although I think not. If not I'd suggest trying to author using IFOEdit. Up at the top, DVD Author->Author DVD, and feed it the same things you did to Muxman. It should give you a playable DVD. As to whether or not your DVD player will play it smoothly is another question. It should, though, I think.

[twinaleblood]

Oh, I don't know. Muxman says it's non standard, but I guess it's playable. At least it works with power dvd, is that enough to say it's playable? If it isn't, I'll try to burn it and play it in the standalone player.

[manono]

Oh, I don't know. Muxman says it's non standard, but I guess it's playable. At least it works with power dvd, is that enough to say it's playable?

It depends whether you're playing it as a DVD or as a VOB. In my old version of PowerDVD I have to double-click on an IFO. Newer versions may do it differently. In any event, Muxman-created DVDs have 2 IFOs, 2 BUPs, plus however many VOBs. If you got all that, then you got a complete and working DVD out of it.