lost sound in capture avi after writing to a dvd

[techgeek]

Hi,
I am a newbie and doing my best to educate myself here at dvdrhelp but came across something strange. I have a captured avi file that used to have sound but after burning it to DVD the avi no longer will play sound; but the DVD has the video and sound as expected?

Below is a description of how I made the avi and DVD, etc. I am not suggesting that this is how I want to process all of my 20+ analog 8mm home videos but I was rather just trying to see if I had life in the basic steps, ie. make ADVC-100 work, capture, burn to a DVD for a testcase.

I have a P4C 2.6Ghz computer with windows XP home, Sony 510a DVD R/W and just bought a Canopus ADVC-100. Since I do not have any video editing software I thought I would use microsoft moviemaker2 and see what I could do for starters.

I hooked up my analog 8mm camcorder outputs to the ADVC-100 and firewire between ADVC-100 and my PC and in moviemaker2 did a short capture. I could then preview it in the tool and see that it has reasonable video and audio. Cool! I then another capture of about 38 minutes (7Gig). Again the preview showed video and audio. The captured file was in my folder and I could also play it with Windows media player and looked/sounded great.

I played with some of moviemakers edit functions, etc. but did not save anything.

Again the captured avi file would play in Windows Media Player fine and still had the last modified date from when it was captured.

I decide I want to try and burn to a DVD. My sony DVD writer came with ULEAD DVD MovieFactory so I use it to write to a DVD. I pointed to the capture avi that was 7Gig and the moviefactory software says it will take like something like 1.8Gig on the DVD. Fine. It is just a testcase and I am just learning. I burn a DVD and it takes a long time to write the DVD; I assume it is encoding to something that will fit on the DVD.

Anyway when it is all done the DVD plays fine on the TV, video and sound are fine for a first testcase.

BUT here is the problem. I go back to the computer and try to look at the original capture avi and now I cant get it to play any sound. And yes it doesnt seem to be anything stupid like muting of the sound, etc. The other avi's I captured but did not burn to DVD do play sound but now the one I just burned to DVD doesn't.

It is as if the avi sound was lost? Has anyone seen anything like this.

[Tommyknocker]

Load the vidoe into Gold wave and see if it still has sound.

[techgeek]

Load the vidoe into Gold wave and see if it still has sound.

Ok, I think I noticed you gave a similar answer like this to something about sound when I did a forum search; sorry I probably should have followed up on it then.

Is the idea that by loading it into Gold wave it will tell me whether the sound is in the avi or not?

I will try it but what are some of the possibilities, ie:
1) Goldwave does find sound
Then does it mean somehow the avi is corrupted in the sense that it the sound is in the avi container but it wont play?

2) Goldwave finds no sound
Then does it mean somehow the avi lost it's sound?

Again I am hoping that I am not a total idiot and there is some stupid reason on my part that would explain it like "sound is muted or turned off" but that was the first thing I tried.
Then I would bring up 2 other different captures from the ADVC-100 and the sound works as expected. Bring up this one and it doesnt work. If I hadn't just burned this avi to a DVD which has the sound I would say I was mistaken and the avi didn't have sound in the first place but that isn't the case.

Ok, I will try the Gold wave experiment but I was curious if the Gold wave does find the sound what then would be my course of action?

I may have also seen when I did a forum search about "lost sound" something about trying to convert my avi into another avi or something like that in that maybe it would fix it. I grabbed some kind of Canopus utility that seemed to do this (I forgot the name of it and am at work) but it didn't seem to help.

[Tommyknocker]

I think that your video may still have sound, but for some reason, your system is no longer listening for it. I feel this way because I rarely see programs adversely affect the source video. I want to be sure your video still has sound. I see no reason to go any further until you find out.

[techgeek]

Yes, I agree I will try the Gold wave tonight and report back. Thanks!

[techgeek]

Tommyknocker, I installed Gold wave and opened the capture avi file in question and in Gold wave reports there is no audio.

But the problem is I also tried to open two other capture avi files and Gold wave also reports there is no audio in these whereas with these two other files both Microsoft Windows Media Player or Microsoft MovieMaker2 find the sound fine.

So I have three capture avi files with Gold wave reporting it cant find any sound in any of them. But Microsoft WMP and MM2 find sound in two of the three. It is only the one capture avi that I wrote out to DVD with Ulead DVD MovieFactory that does not have any sound at all when opened with any of the software tools mentioned above but as I mentioned in the original post the DVD does have the sound???

I also just used Ulead DVD MovieFactory to try and find the sound on the three capture avi files and it finds it on the two and not the one that is the problem one that was burned to a DVD.

The only thing other I can add is in Ulead DVD MovieFactory when I select a video file to read into the tool, there is an "info" file which tells me lots of information about the capture avi file such as file format is a "Microsoft AVI files -- OpenDML", its file size, frame rate, duration, data rate. Then it gives info about the video in that is of compression "DV Video Encoder -- type 1", its attributes "24 bits, 720 x 480", its total frames. Then for audio it gives the compression is "DV Audio -- NTSC", attributes of "48 kHz, 16 bit, Stereo", etc. The problem is I see no difference in the capture avi files I can hear sound compared to the one that I cant with regards to this info.

The last idea I have is to burn a DVD for one of the caps that is working now and see if after that is done if the sound can still be heard on the computer.

Off to burn the DVD. Whats another $1 coaster!

[techgeek]

Ok, I give up.

I burned a DVD of one of the small capture avi's the same way I burned the other one. After burning the DVD the avi still has sound unlike the other one that is the whole reason for this post.

Tommyknocker, thanks for your time on the Gold wave suggestion. I dont know why it cant find sound for all three of the avi files in question.

And with regard to my original post for now I think it should be closed unless it is more repeatable. Thanks again!

[Tommyknocker]

Too bad. I was going to suggest you try to capture in DV type 2, as it is a more stable type than type 1. Guess we will never know now.