A/V sync issue with VOB files

Report · Apr 14, 2017

Hi all,

I'm editing and converting an old TV movie in PP. I have VOB files as source. The audio on VOB is fine. When imported into Premiere Pro, the video lags but it's inconsistent and making my editing job stressful and difficult. When I export, the opposite happens, the audio lags significantly.

Help?

[Title edited for clarity. — Mod.]

Report · Apr 14, 2017

Directly editing a VOB... or Ripping a VOB to edit using a note from Jim Simon

-http://forums.adobe.com/thread/1322647

Report · Apr 14, 2017

Thank you for your reply. I already have the .VOB files saved on my computer. I guess my problem stems from the fact that I imported them directly into Premiere Pro? I just want to make sure on this since it's all new to me...but do I need to convert them to .AVI or some other format, and then import them into Premiere Pro?

If so, what conversion programs are recommended?

Also, will there be any loss in quality?

Report · Apr 14, 2017

Jim Simon reply at the link I posted

Report · Apr 15, 2017

Thank you. I downloaded the recommended program, and since the program has been updated in the intervening years, and the user interface is different, and there were no how-to instructions in that post or on the website, I am at a loss where to go from here. I'm including a screen shot and would appreciate anyone's advice on how to proceed with the conversion.

ETA: the settings on the right all came up by default.

Report · Apr 15, 2017

Hello? Anyone else with help?

Using that program here are the anomalous specs among the source and export videos;

.VOB Source:

Audio and container duration length: 2h 19m 42s 144ms

Video duration length: 2h 19m 41s 906ms

Video frame interval: 33366 (0.033s)

Audio frame interval: 32000 (0.032s)

First frames: both 0.00s

ReFrames: 1 frame

QuickTime / MOV H.264 export:

Audio and container duration length: 2h 17m 16s 138ms (I did some editing)

Video duration length: 2h 17m 16s 94ms (but this still doesn't match)

Video frame interval: 33366 (0.033s)

Audio frame interval: 21333 (0.021s)

Video first frame: 0.03s, Audio first frame 0.00s but -33ms delay

ReFrames: 3 frames

Report · Apr 15, 2017

You can find version 5 under Download XviD4PSP old versions

Report · Apr 18, 2017

OK I converted the file with that program and imported into Premiere Pro. Upon export, the audio lags the video by a few frames.

Report · Apr 18, 2017

Upon export, the audio lags the video by a few frames.

There is a bug with the current version of Premiere Pro whereby all compressed audio has a sync error. The only way to avoid this is to export Uncompressed audio and convert it using other tools.

Report · Apr 18, 2017

I'm using 2014 on CC. Does that make a difference or same bug?

Report · Apr 19, 2017

I have finally been able to successfully import the sync into my workflow. I got the tip from here:

What is the best way to join multiple DVD VOB files?

I used the command prompt advice and combined the multiple .VOB files into a single .MPG file with the command prompt window. When imported into Premiere Pro, the sync is much better.

I haven't exported yet, but I will try now and see what happens.

Report · Apr 19, 2017

No sync issues in 2014 that I recall. I'd expect it to work fine.

Report · Apr 19, 2017

Jim, the sync is better after importing .MPG, but I've found out now that it drifts over time and winds up out of sync towards the end of the video. You recommended that program and conversion to .AVI in another thread. I used that program, but I cannot check whether the AVI file is synced properly or not.

The reason is that when I play the VOB file in Windows Media Player or VLC, the sync is fine. But when I play the converted AVI file in Windows Media Player, the video races by at very fast speed, while the audio plays at normal speed. If I try to scan ahead in the file, WMP will give me an error and stop playback altogether. VLC won't play the file, and Windows Movie Maker plays it from the beginning, but if you scan ahead it says the file is corrupted and has to close.

The AVI did import into Premiere Pro, but it's out of sync.

Report · Apr 20, 2017

I cannot check whether the AVI file is synced properly or not.

The AVI did import into Premiere Pro, but it's out of sync.

Those are conflicting statements. Which is it?

Report · Apr 20, 2017

They are not conflicting statements. I tried to check the sync on the AVI ... before import ... but the file won't playback normally on any media player. After I import the AVI file into Premiere Pro, I can check the sync, because it works in Premiere Pro. I wanted to compare to see if the sync problem was inherent in the AVI, or if it was being produced after importing to Premiere Pro.

Report · Apr 20, 2017

the file won't playback normally on any media player

That suggests you might have done something wrong. Following the visual guide, you will end up with a DV file which I'd expect any media player to handle just fine.

Report · Apr 20, 2017

I followed the instructions you gave with that old version of the XVID conversion software. The AVI file does not play normally in Windows Media Player. The audio plays at the correct speed, but the video races by in super fast forward mode. When scanned ahead, WMP gives an error and ceases to play the file at all. VLC, on the other hand, plays the video at normal speed, but the audio plays in super slow motion and is therefore stuttering and inaudible.

In VLC the AVI video is almost 18 hours long, despite the movie being only 2 hours 19 minutes. It actually started to include footage from the next episode, even though I did not convert that part yet.

So clearly there is something strange going on in the underlying file.

Report · Apr 20, 2017

I meant to say there is something strange going on with the underlying file, and yet the corrupted AVI seems to work fine when imported into Premiere Pro. Just the sync is off. I matched the AVI sync up with the MPG sync of the other conversion I did, and the audio is an exact match. I cannot tell if the video is an exact match, because their aspect ratios are a little off, but they look pretty good, except one file is a single frame longer than the other.

The MPG file plays like normal on my media players.

Report · Apr 20, 2017

But the sync of the MPG file drifts out over time.

Report · Apr 20, 2017

In VLC the AVI video is almost 18 hours long, despite the movie being only 2 hours 19 minutes. It actually started to include footage from the next episode, even though I did not convert that part yet.

Sorry about this, the next part of the movie does NOT start to play in VLC. It's still just the original file(s). At the 2h 19m mark when the video finishes, the audio begins to speed up, but is still in very slow motion. I'm just assuming that the file length being almost 18 hours is what it takes for the entire audio track to play at this incredibly slow speed.

Report · Apr 21, 2017

OK, download the following app and open the AVI file with it. Post a screen shot of the readout.

GSpot Codec Information Appliance

Report · Apr 18, 2017

Just to be clear, when I play the .VOB originals in VLC or some other media player, there is no audio lag. The sync is perfect. But even converting to AVI and importing into Premiere Pro, everything falls out of sync.

Report · Apr 14, 2017

These are .VOB files I have inside the Video_TS folder:

Report · Apr 18, 2017

I just noticed that when I replied to Jim Simon, this thread didn't go back to Page 1.

Does anyone know how to fix this issue? The .VOB sync is fine when the original file is played in VLC. It doesn't matter if I import directly into Premiere Pro, or convert to AVI first as was recommended. Nothing works. Whenever I export, the audio lags the video.