Audio out of sync with imported video

[lildrgn]

Hi everyone,

I am importing old Video/Digital 8 tapes to the PC to upload digitally. Currently using a firewire card/cable to get videos from camera to PC. That seems to work fine. I use Videopad and dump the raw .AVIs into the timeline. However, on most of my videos, the audio is compressed by 1/3rd and sped up. My voices sound like the Chipmunks. If I adjust the audio speed to 66.7%, it seems to make the audio sound right, but it still doesn't line up 100%. Luckily the videos aren't great, but I'd like to get the audio and video to sync up.

Right now, the importing software I'm using (utility called WinDV) breaks it up by clip or several minutes (unsure how it does it). I have had some clips line up right, but most are not. My most recent example is a 12 minute clip, where the video runs 12 minutes and the audio stops at about 8:20. Any suggestions on how to fix?

When I play the clips in question in a movie player, they play correctly, audio and video is synced.

[borate]

Open the files in a player and look at their PROPERTIES | DETAILS or MEDIAINFO, as in the MPC-BE player from https://sourceforge.net/projects/mpcbe/

You may see something like this...

If they are MUXED, use a free demuxer on each file to extract audio.  http://www.pazera-software.com/products/audio-extractor

Then In Videopad UNlink the A/V in the original file and substitute the new audio file that was extracted.

Or mute the original audio and place the new file on the track beneath it.

If you have a problem seeing whether these files are muxed, please upload a 'bad' clip to a free server, share the link and post it here.

[Nationalsolo]

Hi

".... If I adjust the audio speed to 66.7%, it seems to make the audio sound right, but it still doesn't line up 100%. Luckily the videos aren't great, but I'd like to get the audio and video to sync up. ...."

Try fine adjustment of audio OR/AND the video speed so they synch better than what you managed to get already.  Obviously unlink the audio first.) Increments are larger with a shorter clip so you may have less success but you may be able to get it pretty close with a much longer clip.. Also if you zoom into the timeline you can more finely adjust the position of the audio by dragging right or left. You can set the red line cursor to a precise frame using the control buttons under the Sequence preview window and then drag the audio along to the line. It will lock in place with single frame precision

Nat