out of sync

[Cazz]

Hi
I try now a program Vegas Movie Studio 9.0 and it look nice.
I dont think that have to be the program that make it crazy but I have no idea why it does and how to fix it

I have recording a show with a digital camerarecorder and also use a H4 ZOOM to make the sound looks as good as possible to
my movie.

I add the AVI file to the program and in a another timeline I add the sound file.

I move so it start at the same time and I can see in the pitch it show nice.

Now to my problem, somewhere it go out of sync so I have about 1 sec delay and I dont know why?

That is no wrong with the video or the audiofile but I have no idea how to fix it.

Can I add two point and stretch or what??

Have never had problem with this before so that is so strange.

If that is any problem that have to be the audiofile but why and how can I fix it.

[filmboss80]

Make sure your Zoom H4 audio settings match the audio of the AVI file. DV avi audio is 48000Hz, 16-bit stereo, best saved as a .wav file. The Zoom H4 has several options. Make sure you're NOT recording audio at a 44100Hz sampling rate, or with 8-bit or 12-bit precision. If you recorded at the wrong settings, you will need to convert your audio file to something that matches the audio stream of your AVI file.

[Cazz]

Hi, I did look at it was not same so I was using Audacity to convert my WAV file from the ZOOM so it look like that sound that
is in the moviefile

From AVI file
00:48:18,448, 48*000 Hz; 16 Bit; Stereo, Uncompressed

From ZOOM WAV file
00:48:03,901, 48*000 Hz; 16 Bit; Stereo, Uncompressed

I know it not same length but I going to cut it later.


the problem now, nothing match at all.
Before It match at the begin but not anymore, nothing match anymore at all

as you can see in the begin I have match the first pitch in the sound but the other dont fallow

[filmboss80]

Just look at the 2 audio waveforms in your timeline. Obviously, they are not synchronized at the correct point, because they don't match visually. Slide the bottom file to the right until the waveforms match. Then tweak frame by frame to line them up perfectly.

There's no way to start your camcorder and Zoom recorder at the same millisecond. And don't expect to maintain synchronization throughout the entire recording, because every time you pause the camcorder, the sync will shift further against the Zoom recording.

Every few minutes (or seconds) into the editing timeline, you'll likely have to resynchronize various portions your zoom audio track to the audio in the AVI track. Just split that zoom audio into smaller bits that can be resynchronized, point-by-point, at various edit intervals with the video.

Next time you shoot video with a separate audio recorder, you will need to "slate" the recordings, making purposeful click or pop sounds to help you synchronize the tracks. Of course, you will also need to set your Zoom H4 recording settings so that it will match the AVI audio settings (as mentioned in a previous post).

[Cazz]

Yes I know I can't start recording both ZOOM and camcorder but that is strange why it dont
synchronization throughout the entire recording. I dont stop pause or anything like that.

I start ZOOM about 10 min before, and the camera about 5 min before and then trying to sync inside a videoprogram

but as you can see in the pic I have begin when both track show high pitch but after that it not in sync.

I maybe have to split every scen from the video and even the audiotrack into piece.

Is going to be alot of work but if I have to do it I do it.

Next time I going to change the Hz and that so it is same as the camcorder.

[filmboss80]

Okay, your second timeline clarifies what you mean. I have no idea why that occurred, other than something might have happened when converting to 48000Hz, 16-bit.

I have the Zoom H4, and have never encountered the types of problems you have.

Your next option is to go back to Audacity and experiment with tempo changes until the Zoom audio comes more closely to the timing of the AVI.

Do you have VirtualDub? It will enable you to extract an audio wave out of the AVI file to serve as a timing reference. (Just do a short clip no longer than 2 minutes.) Put that reference in Audacity; then under Project > Import Audio, open the Zoom audio and trim it to match the 2-minute reference wav from the AVI. By looking at the 2 audio tracks, you can alter the timing of the Zoom audio under Effect > Change Tempo in Audacity. You'll have to experiment with percentages until you get the timing right. (Make sure you do NOT change the pitch.) Once you find the best setting, apply it to the entire Zoom audio file and export it as a new wav (48000Hz, 16-bit, etc.).

I hope those instructions make sense. I had to do a similar thing to an analog recording a few years back. (I got it to work like a charm.)

[Cazz]

Thanks, going to try that.