OT: NX5 audio dropout

JackW wrote on 9/9/2014, 2:29 PM

I shot some test footage with my new NX5 and on playback after downloading to Vegas I'm getting a 9 frame audio dropout every 1:12:21. Video seems to be fine.

Any thoughts on why this is happening or what I might be doing wrong?

Jack

Comments

John_Cline wrote on 9/9/2014, 3:19 PM

First of all, how are you importing the files from the camera?

JackW wrote on 9/9/2014, 3:24 PM

Using Sony "Content Manager Utility" software that came with the camera. Clips play fine in-camera, without any dropout, so it must be something I'm doing when downloading.

Jack

set wrote on 9/9/2014, 7:22 PM

Does the audio waveform seen in the timeline?

Try quit Vegas and run again.

JackW wrote on 9/9/2014, 7:27 PM

Audio wave form looks fine -- it just has a 9 frame hole in it every 1:12:21 -- total dropout, no waveform, no audio. Then audio starts again for next 1:12:21, etc.

Jack

JackW wrote on 9/10/2014, 11:07 PM

Bump:

I really need help here if anyone has a suggestion.

Thanks, Jack

ushere wrote on 9/10/2014, 11:41 PM

playback in camera ok?

playback in say vlc ok?

set wrote on 9/11/2014, 12:43 AM

Try export audio only to WAV, just for testing.

farss wrote on 9/11/2014, 2:46 AM

Was the this something like a concert?
How many cards does the recording span?

The problem sounds the same as the one I have when my EX1 records continuously over more than one card, Vegas will not join the files together without a dropout. To fix that I have to us the Content Browser to move all the files into one BPAV folder and then export them as a single MXF file.

I think you'll need to do something similar but from my tests Content Browser will not stitch AVCHD files into one. You could try using Vegas's own Device Explorer, it might work.

Bob.

JackW wrote on 9/11/2014, 12:45 PM

Usher: Playback in VLC -- no audio, video is fine. Won't play at all in Windows Media Player.
Playback in camera -- o.k.

Set: I'll try exporting to WAV to test.

Bob: This was a concert (play) but the entire event was recorded on one card. Nothing on the second card. I'll try using Device Explorer to see if that helps.

Thanks for the suggestions. This has become very frustrating.

Jack

Laurence wrote on 9/11/2014, 3:18 PM

I used to see something like this with my Sony Z7 when it was spanning files on a FAT32 memory card. If I just dragged the video files to a video timeline, I would get glitches where it went from one file to the next. If I used the software that came with the camera however, it would stitch the smaller files into larger clips that would not glitch at the switch points. The solution could be as simple as using the supplied software instead of just copying the clips.

farss wrote on 9/11/2014, 3:25 PM

Bit of a mystery then :(

I shot a concert with another NXCAM (NX30) a week ago. First half the camera was in record for around 90 minutes and all the files were joined together by V9's Device Explorer with no glitch that I've noticed so far. It wasn't the only camera shooting the concert so I could have missed a glitch. I'll check carefully later.

I guess if there's no dropped video frames at the same place as the audio dropout it might have nothing to do with Vegas or the camera. Typically if it's a file concatenation problem a whole GOP is lost.

Bob.

[edit]

If all else fails I'd connect the audio outputs from the camera to an audio recorder and record a minute or so from around the glitch then patch it in with Vegas.

I've done this several times with weird tape dropout problems that only showed up in the captured file.