Audio falls out of sync

ToxicSludge

ToxicSludge

I Love YTtalk
So before my pc rebuild, I used DxTory for (game) recording, which recorded the game audio and mic audio on seperate audio tracks. Recorded onto a dedicated hdd and everything was hunky dory.

I rebuilt my pc, putting in a new gfx card, and changing my os hdd to a solid state. Put on a fresh os install and reinstalled DxTory + games on a separate 1TB drive.

Ever since then, my audio will fall out of sync with the video. It starts off ok, but over time it becomes completely out of sync.

I thought it might be a DxTory issue, so I changed recording programs and started using Audacity to record my mic. I make sure to sync the mic recording to the video (bringing up the menu in game while making a noise to match it) but it still slowly gets out of sync.

I'm recording to the same drive, and even defragged it just in case. Anyone else ever have this issue and know how to fix it? It's driving me nuts!
 
Are you experiencing any dropped frames in the recording (ie. sub-30 FPS in the game, while DXTory is set to record at 30)?

Also, which codec are you using?
 
I have the same problem is my recording goes over and hour. I use OBS/Shadowplay and Audacity. I think the only real way to solve this is to periodically restart your recording. If I see my session has gone over 50 minutes, i stop and start again, resync a new audio track and title them all part 2 for editing later.
 
Easy solution!

If you are using premiere pro there is a tool called "rate stretch" and it increases or decreases the length of a clip (often times used for slow mo or time lapse). BUT it can also be used to fix sync issues with all those frames that have been dropping out of school to do drugs. If you do not have premiere, there should still be some sort of tool to allow you to accomplish the same thing.

Here is what you do:
1. when recording make sure that you have a few seconds after you hit record and before you start talking in order to match up your voice to something on the screen (could be as simple as saying "NOW" as soon as you press the pause button. As long as you have some sort of reference point)

2. Do the same thing after you are done recording before you decide to stop the session and take the beautiful work of art to that post production editing software of yours.

3. align the first sync test you did at the beginning of the video to make it match at the beginning.

4. Go to the end of the video and see if your end point is also in sync with the video (I am assuming it is not otherwise this post wouldn't be here)

5. If they don't match up, simply use the rate stretch on the back of your audio clip (or video clip, up to you) and match those suckers up.

The great thing about doing this is that you only change the speed slightly. You will not notice a change of pitch with your voice because it has only been changed slightly

HAVE FUN IN POST! If you have any other questions be sure to message me :)

side note: Using markers "M" allows for doing this easier
 
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