HD dvd conversion, audio sync problem...

[BigJeebz]

I just bought an LG super multi blu ray and hd dvd reader drive so I bought a few hd dvd's to go with it ( I already have a bunch of blu's) anyway I decided I wanted to start backing them up on my computer. My goal is to convert the hd dvd title into a format usable on my computer, and also streamable to my PS3.

(edit: Transformers is the title in question)

After going through every guide and forum I could find in the last several days I have come to a stalemate...

I first demuxed the video and audio streams. Then I ran the video through megui and converted it to an h264, which I then put through h264 info. The resulting video file is around 16 gb and plays fine in vlc media.


I used eac3to to convert the audio to ac3, which i can also open in vlc and listen to the whole thing, no problem.

But I can't seem to get them muxed back together without syncing issues. I've tried tsmuxer and ts remux and several different attempts at each but every time the audio is quite a ways behind the video (between 10 and 20 seconds)

If anyone has any ideas as to what I'm doing wrong or what else I should be doing I would be very appreciative of your assistance!!

[poisondeathray]

Did you decrypt properly? What method did you use?

Check the lengths of your original audio, re-encoded AC3, original movie video length, and .mkv video file with mediainfo - do they match?

Some hd-dvd streams from hd-dvd are variable frame rate - thus the problem is not the audio, rather the video. To get around this, the avs script needed something like DirectShowSource("C:\PATH\file.m2ts",fps=23.976,co nvertfps=true,audio=false)

[BigJeebz]

I decrypted and ripped with anydvd hd, demuxed with evodemux

When checking the lengths the original audio, re encoded ac3 and original movie are all the same (2hr 23 minutes) but when checking the output video it doesn't give me a length, ( i have multiple output videos from trying several different settings (a couple .h264's, a .m2ts, and 2 .264's ) and none of them show the length)

BTW this is my first attempt at converting a hd video and a lot of this has been a learning experience, but I'm not familiar with using .mkv's. And my main problem is learning text based editors, since everythign I was using for dvd's was gui based.

[poisondeathray]

The .h264 and .264 are raw video streams. Mediainfo won't parse raw streams. Use mkvmergegui in the mkvtoolnix kit to mux them together with your audio.

Check to see if it plays back correctly in the .mkv container, if not, check the durations with mediainfo (view=>text). If the audio is still off, try and see if it's a constant delay problem (e.g. 1 sec all the way through) or progressively worsening problem (e.g. in sync at first, then gets worse as you play)

[BigJeebz]

Ok muxed the video with the ac3 audio and the sync is still off, it seems to be progressively getting worse, at start it's about a second off but by two minutes in it's about 15 seconds off. I also just noticed that the video appears to be going a little too fast, which would make sense as to why the audio is lagging behind. When I open media info with the mkv file both durations are the same.

[poisondeathray]

You pretty much have to use the script above to feed into MeGUI to encode a proper video stream...just adjust the names, and paths. You already used MeGUI so avisynth scripting shouldn't be that difficult. Of course, you need avisynth installed, haali media splitter, ffdshow and h.264 enabled in the ffdshow configuration.

Another way is to use DGAVCIndex, but that uses scripts as well...but I think you have to adjust the fps manually at the end in the dga file to "24000/1001"

EDIT: I didn't see that you provided the title "Transformers". If you go to Doom9 forums, and search for "Transformers", there's a few threads that outline several different ways to do it. The method I suggested has worked for me on other AVC and VC1 titles before, but I haven't tried Transformers.

[BigJeebz]

Wow I'm an idiot, just realized why the video was running too fast, it was running at 30000/1001, jeeze. I went back re-muxed it with mkvmergegui at 24000/1000 and everything is synced just right!

Thanks alot for your help because I don't know how long it would have taken me to figure it out without some guidance. Much appreciated again!