How long is long? How you you intend to show the video? Standard definition or high definition? Your computer is the problem for what you are trying to do.

Without more information, it is hard to offer a bunch of suggestions.

Have you thought about splitting the project into sections that your computer will handle? Put the video on the timeline and do your edits. Where you see the audio issues, stop and delete everything after that point. Save the project as part 1. Add the original into the timeline again and delete what is in the first part. Repeat as above until you have it all. Go to produce and add all the parts together to get a video file.

Note, you have Windows updates that haven't been successful. That should be done even if you have to take it back to get it updated.

When did you do any maintenance on it? Take a look at the free space on your drives: ---------------------
Drive: C:
Free Space: 30.7 GB
Total Space: 81.9 GB
File System: NTFS
Model: ST500LM021-1KJ152

Drive: D:
Free Space: 7.9 GB
Total Space: 390.4 GB
File System: NTFS
Model: ST500LM021-1KJ152

Time to sort through and delete some of the junk you don't need.

Keep other programs running at a minimum - disconnect from the internet, turn off your antivirus, close any unneeded programs that start at boot, etc. .
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BoilerPlate: To posters who ask for help -- it is nice to thank the volunteers who try to answer your questions !
Anything I post unless stated with a reference is my personal opinion.

Quote How long is long? How you you intend to show the video? Standard definition or high definition? Your computer is the problem for what you are trying to do.

Hi Steve,

Just a quick response before I start addressing your recommendations. My raw footage is about 1 hour long, and I have edited out probably 15 minutes of it. I am preparing the final videon in Full HD (all my videos are Full HD), H.264 in mp4 format.

This is obviously not the first project where I have this issue. If I ignore what I see on the waveform and I cut based on what I hear the final composed video is perfect, just the way I want it. So my only issue is the visualization on the timeline.

Cheers,
Csongor

I was having a similar problem, too. I did not find a resolution, but I did find a work-around.

In my case, I was taking MOV clips (from my ZOOM Q, editing the sound in Audacity, and then trying to reattach it to the original video. They would be different lengths.

What I discovered is that audio that is "produced" by PD will sync. So pop the raw file in, go to the "Produce" menu, and produce it as a WAV file at the highest possible setting (which will, alas, be lower than your ZOOM H1, despite what the salesman told me...). I can then edit it freely and it will sync just fine.

SOmething like that might work for you too.
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Just in case, though, when you first put your files into PD, are you using the "Sync by Audio" feature? Do that at the start with the audio/video from your camera and the audio from your ZOOM H1.

Then, when you make a cut (ex. by using Ctrl-T), make sure it applies to both the video and audio at the same time (Ctrl-click to highlight both). That way you aren't trying to eyeball it based on the less-than-useful waveform that appears in PD. That's going to mess things up for sure.

Quote I was having a similar problem, too. I did not find a resolution, but I did find a work-around...

Hi Jonathan,
Interesting observations. I will set my ZOOM H1 to Wave format. Maybe I get better result cutting a wave audio than a mp3 audio. The other thing I also do is I process even my Zoom audio, by reducing the noise (Noise reduction in Waveeditor) which gets in from the laptop fan. Maybe the problem is with that re-processed audio. Anyway, will test wave for sure.
I have not used Sync by Audio. What I do is that I start recording on all my devices, I clap which clearly shows up in the audio track. I cut at channels at the clap sound and align them. This is a good enough timing for screen recordings and the underlying audio. And of course works until the waveform slowly goes out of sync.
For cutting I do what you say. Actually, I deselect all tracks and cut. If you do this PD cuts all tracks automatically. Than I just select the unwanted pieces, delete them and let PD to fill the space.

Quote

Quote I was having a similar problem, too. I did not find a resolution, but I did find a work-around...

Hi Jonathan,
Interesting observations. I will set my ZOOM H1 to Wave format. ....

In case somebody reads this thread in the future, just a few observations. I am editing a new project which has a video track (screen recording by AverMedia Live Games Portable) and also an audio only track (Zoom H1 mic). These are about 1.5 hour long. I have edited the raw footage down to 39 minutes now and there is no sync issue. The only thing I have changed that the Zoom H1 audio is in WAV format not in MP3.
Therefore the workaround for the waveform sync issue is to use wave instead of mp3.