Audio Desync issues with specific files

#1
Hi All,

I'm still on the 8 day trial period of videoRedo Pro. So far from what I've seen it looks like this program may solve my issues and if it can solve this final issue then it's a must buy.

My situation:
I've been looking for programs to force a video to a constant framerate so that I don't have audio drifting out of sync when editing videos in Adobe Premier CC 2017. Adobe Premier doesn't like VFR (Variable Framerate) videos so in order for the audio/video so remain in sync while editing I've had to try some programs to make the file a CFR (Constant Framerate).

I have some videos that are longer than four hours in length. These files were still drifting out of sync at around the 2 hour mark even after attempting to encode to CFR using Handbrake as well as FFMPEG.. both those programs still wouldn't keep the audio video in sync over the full four hours.. at around the two hour mark audio/video would start drifting.

Someone over at the handbrake forums said Video ReDo is designed to insert frames and deal with the nature of broadcast films. I'm dealing with footage downloaded from Twitch (the livestreaming platform).

I tried running one of my files through Video ReDo by adding a single file with the only changed option being FrameRate = 30 fps.. didn't change resolution (used Same As Source) or any other options.

For my first attempt everything went GREAT! The encode happened lightning fast and when editing in Premier it looked like everything was in sync. My prayers answered!

That's when I ran in to a little snag when attempting to encode the same video but this time I redownloaded it at a higher resolution. I imported the file in to Video ReDo and still used "Same As Source" for my resolution preset.. only changing Framerate to 30.. The encode happened fast but this time when I imported in to premier it became out of sync almost immediately.. around the 15 minute mark..

Does Video ReDo have issues with certain size videos? What other import options can I try in VideoReDo to try to force the sync to happen? Could it be that even though it's the same file downloaded (just at a different resolution) that the source was drastically different from the first time I imported?..

I'm saving the file as a H.264 MP4, using Intelligent Encode
Video ReDo Software Version: 5.1.3.746

All help is appreciated!
Thanks everyone
 

Dan203

Senior Developer
Staff member
#2
VideoReDo does not support VFR videos either. The fact that the first one worked must have been a fluke. VFR can cause anything from a sync issue, to a straight up failure to open in VideoReDo.

We're hoping to add something for VFR in the next major release, but we're not sure when that will actually become available.
 

Dan203

Senior Developer
Staff member
#3
Also sorry for the late reply. This got pushed into the moderation queue for some reason and I missed it until now.
 
#4
VideoReDo does not support VFR videos either. The fact that the first one worked must have been a fluke. VFR can cause anything from a sync issue, to a straight up failure to open in VideoReDo.

We're hoping to add something for VFR in the next major release, but we're not sure when that will actually become available.
Any news on this front? It would be great if there was a fix for this issue sooner rather than later.
 
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