Seperate Audio and video duration do not match, how to?

[tijgert]

I have a home made 1080i capture of a movie with simple stereo audio. I've recently discovered that the DVD that I own of this movie is the same SE version and thus the DTS audio track of my DVD would sound very sweet with my HD cap.

But: The cap (.ts @ 29.97) has a duration of 2:34 19s 925ms while the DVD (@ 23.976) and thus the DTS track has a duration of 2:34 20s 811ms. The result is that because the .ts video plays a tad too quick, with TSmuxer the audio is not synched.

I'd like to either find a way to make TSmuxer match up the beginning and the end of the AV material, or find a way to speed up a DTS track or slowdown the video track. TSmuxer only gives the standard values of 30000/1001 while according to my calculations a framerate of 29.967 would match it up perfectly.

I'm sure that combining non 100% duration matching of AV material is a simple thing and very common, but I can't figure out how to do either. Anyone with an idea?

[setarip_old]

Hi!

1) If you simply use "tsMuxeR" to mux the two streams, does the approximate 1 second difference appear immediately and remain constant throughout, does it only appear at the end of the video, or does it start in synch and gradually go out of synch throughout the playback until it is 1 second out of synch at the end?

2) By, "I have a home made 1080i capture of a movie with simple stereo audio.", do you mean that captured it? If so, what software and procedures did you use?

[tijgert]

1. It starts in synch and then gradually loses synch towards the end. Alternately, I can shift the audio and make it start out of synch and gradually let it synch towards the end. The middleground would be that it starts just slightly out of synch, synchs in the center and towards the end runs slightly out of synch again, but I would know it's not perfect...

2. I'm not sure. It's a home made cap all right, made for me by my friend who has Sky in the U.K. (we don't have that here in Holland). He made it specifically for me after I begged him because it's my all time *fav* movie. I could ask him how he did it and how come the synch is off if it's the same movie and even the same version, but that wouldn't change the media.

[Ghitulescu]

1. It starts in synch and then gradually loses synch towards the end. Alternately, I can shift the audio and make it start out of synch and gradually let it synch towards the end. The middleground would be that it starts just slightly out of synch, synchs in the center and towards the end runs slightly out of synch again, but I would know it's not perfect...

2. I'm not sure. It's a home made cap all right, made for me by my friend who has Sky in the U.K. (we don't have that here in Holland). He made it specifically for me after I begged him because it's my all time *fav* movie. I could ask him how he did it and how come the synch is off if it's the same movie and even the same version, but that wouldn't change the media.

1. demux them into elementary streams, then remux them again. Don't try a "remuxing in place", it may pick up the time code of both streams and try to resynch to it. I don't know how the remux is working, but a drifting in synch, which is noticeably, might have the cause the "pulldown syndrom".

[tijgert]

I have a seperate .dts track and the audio-less .ts file.
I don't know how to make them any more elementary than that. Tomorrow I will remux them as pure files...

er.. pulldown syndrom? The .ts dows say it has/is pulldown.

[Ghitulescu]

setarip_old also asked you if it's out of synch for 1 second at the end, you replied only that's out of synch.

It is this 1 second that bothers you or you have a bigger delay? Have you checked all over the film, or you screened 3 places and that's it? It may be very well the case when there are commercial breaks and you loose some frames in between, making the TS film shorter.

[tijgert]

Woops, sorry for the omission.

If I synch it up so that the beginning synchs, the end will be about a second out of synch. And althought that's the only issue, a whole second (or 800ms) is a whole lot. However I did just take spot checks and not view/compare the entire movie as such. So besides the .ts movie playing a tad quicker than it should, it could be that missing frames from commercial breaks are the culprit, I hadn't thought of that...

I'll take some extra time and work on a more accurate report of this problem.

To be continued...

[setarip_old]

@tijgertIt's a home made cap all right, made for me by my friend who has Sky in the U.K. (we don't have that here in Holland).You might want to read the "ANNOUNCEMENT" at the top of the "newbies" sub-forum, as well as the Doom9 Forum rules (#6, in particular)...

[TheFluff]

Even in the US with its incredibly anal laws that would be fair use, and it's clearly not warez so I have no idea what you're going on about other than nitpicking just for the sake of it (backseat modding?). He also owns the DVD so yeah.