Blank video problem with MuxMan 0.18.8

[Amby]

Hi, all.

I've been working with MuxMan to re-mux a modified ac3 soundtrack back into a DVD. The one remaining problem I have is that the MuxMan output begins with approximately 30 seconds of blank/black video before the actual film's video begins.

The audio, however, IS correctly inserted, but since it begins when it's supposed to, the ~30 second delay in the start of the video leaves an unsynchronized mess.

When I play the source DVD folder on disk with WinDVD 8, it's perfect in both video and audio, with no blank video at the beginning. And the ONLY thing I remux with MuxMan is a re-mixed audio track, which also plays perfectly before and after muxing.

So this is as plain and routine as it gets. The source is a commercial film DVD on disk, ripped by IsoBuster via AnyDVD without problems, so there's no copy protection issue whatsoever.

What's going on?

[setarip_old]

Hi!

What's the Title and Region of the DVD?

[Amby]

Hi!

What's the Title and Region of the DVD?

Title: Firewall

Region: 1

Note that there are no problems whatsoever with the source or with copy protections.

[setarip_old]

Right. It was a Warner Bros. release, with neither "RipGuard" nor "ARccOS" copy protection to possibly cause the desync (If not properly "cleaned up" with either VOBBlanker or FixVTS).re-mux a modified ac3 soundtrack back into a DVD.What did you do in the way of modifying the .AC3 audiostream?

[Amby]

Right. It was a Warner Bros. release, with neither "RipGuard" nor "ARccOS" copy protection to possibly cause the desync (If not properly "cleaned up" with either VOBBlanker or FixVTS).What did you do in the way of modifying the .AC3 audiostream?

I mixed in a RiffTrax (www.rifftrax.com) audio track. It comes as an mp3, which I resample to 48 KHz, converted to wav, and and then mixed with the wav-converted original ac3 soundtrack using an ideal plugin called GW Voice Over with GoldWave. Then I used ffmpeggui to convert the mixed wav file back into ac3 for muxing.

MPUCoder tells me that in an ideal world, MuxMan could mux back in the wav file directly, but that I'd get all kinds of underflow errors in actual practice, so I do it the way I described.

By the way, the wav version, the ac3 version, and the final muxed version of the soundtrack all play perfectly.

[manono]

Hi-

I don't understand. You're saying that the muxed output starts with 30 seconds of black screen, right? What about the M2V that you added into Muxman. If you play it by itself, does it also have 30 seconds of black?

You said earlier that the remux includes only the audio? If so, then how do you later get the DVD to play both audio and video? Ordinarily you'd demux everything (audio, video, subs (if any), and cells (chapters)). Then after editing your audio, you'd add back everything and author. You didn't do it this way?

Are you using the Pro version of Muxman?

[Amby]

Hi-

I don't understand. You're saying that the muxed output starts with 30 seconds of black screen, right? What about the M2V that you added into Muxman. If you play it by itself, does it also have 30 seconds of black?
Hi, and thanks for your reply.

I didn't demux or work with in any regard the video/.m2v file at all. At least version 0.18 (the gui version) of MuxMan has a feature many people aren't aware of: MuxMan 0.18 has a built-in internal demuxer along with the main muxing capability. I learned this from MPUCoder himself. What this means in practice is that MuxMan can obtain the video and subpictures from the original VOB files that you're muxing with. In other words, you never need to demux and then remux the .m2v file. Cool, huh?

You said earlier that the remux includes only the audio? If so, then how do you later get the DVD to play both audio and video? Ordinarily you'd demux everything (audio, video, subs (if any), and cells (chapters)). Then after editing your audio, you'd add back everything and author. You didn't do it this way?Nope. This is apparently not a well-known feature of MuxMan 0.18, but it sure is a great one.

Are you using the Pro version of Muxman?Yes, v0.18.8 is considered the "Pro" version.

I'd say this looks very much like a bug in MuxMan.

[setarip_old]

Hi!I honestly don't know if v 0.18.8 is considered the "Pro" version or not.How did you obtain this version?

[manono]

Cool, huh?
Hehe, only if it works. Unless you're willing to demux and then remux, adding in the edited audio, I think this is something you'll have to take up with MPUCoder. You might try demuxing (using PGCDemux) just for the heck of it, to make sure that the M2V doesn't have any 30 seconds of opening black.

[Amby]

Hi!How did you obtain this version?

I bought it on MPUcoder's site. It's the "pro" version.

[Amby]

Hehe, only if it works. Unless you're willing to demux and then remux, adding in the edited audio, I think this is something you'll have to take up with MPUCoder. You might try demuxing (using PGCDemux) just for the heck of it, to make sure that the M2V doesn't have any 30 seconds of opening black.

I'd personally be willing to do it that way, but there are two issues:

(1) I want a generic, standard procedure that others can follow, and

(2) If you do it that way, you LOSE the menus and other extras like the subtitles.


But I did demux the video manually using PGCdemux, and there's no problem with it.