New Video File corrupts sound track

[kebrinton]

Hi all. It's been a while.

I've searched but not found a discussion exactly like mine. I found http://phpbb.ulead.com.tw/EN/viewtopic. ... ck+garbled but that did not help me.

I'm using VS9, WinXP, lots and lots of success with both.

The file I captured was analog, originally taken with a Sony stereo Handycam on Video-8 tape, a 1-hr file. I captured it using my Sony D-8 TRV320 camcorder which converts analog to digital. The video is excellent. The sound track ON CAMCORDER was good, but after capture in VS completely fractured throughout. By "fractured" I mean constantly interrupted by little breaks, perhaps two per second. Settings: Encoder Type 1, Lower Field First, DV Audio - NTSC 48,000 kHz 16 bit Stereo. Just to make sure, I captured all over again, with the same results.

I captured a fresh sound track separately. It sounds great when played as a clip and as a Project together with the muted video. But when I Create New Video File, the sound is fractured once again.

I split off the sound track from the original capture, deleted it, and inserted my new, excellent sound track. All fine. But when I Create New Video File, the sound is once again fractured throughout.

What have I not thought of? I've been making successful videos for years.

K

[kebrinton]

I should add that I used both a .WAV sound file, and when that resulted in the "fractured" problem, I converted to .mp3 and tried that. Same problem.

[Ken Berry]

Hi Keith -- long time, no hear...!

How does the final video clip sound when played on another computer? In other words, I am trying to rule out possible hardware problems which potentially could be developing on your computer.

While it might sound strange, have you tried capturing the DV using Type 2 encoder?

[Ron P.]

Welcome to the forums,

Could you post the properties of the "new video" you created? Are you rendering another DV (avi), MPEG (which 1 or 2), DivX, WMV, and the audio settings you are using to create this video file.

[kebrinton]

Hi Ken, hi Ron. You've really stuck with it!

Ken, I have not tried playing the New Video File on another computer, but I could easily do that, and will try. Hadn't thought of that. However, since everything's been absolutely smooth sailing on my own computer for quite some time (even recently), I doubt I'll discover something new.

Ron, to give you the standard information:
It's an AVI file (haven't got to the rendering stage yet).
29.97 fps
Encoder Type 1
24 bits, 720x480, 4:3
NTSC Audio, 48,000kHz, 16 bit, Stereo

I have fiddled with this file only minimally: no editing, no cutting, no nothing really. The owner just wants the video on a DVD, that's all.

I'm trying to understand how the Project sounds great on the Timeline (video and separate sound track), but somehow putting them together causes this defect.

I've done voice-over and background music on lots of my own videos with never a problem. I have also substituted a hi-quality sound track from a digital recorder for the lousy sound track from a cheap videocamera and achieved a beautiful video result.

K

[Ron P.]

But when I Create New Video File, the sound is once again fractured throughout.

Now I'm a little puzzled, you say you create a new video file, however haven't got the rendering stage yet?

Creating a new video file is rendering it. You should be rendering (Creating new video file) to DVD Compatible MPEG-2.

If you have not actually rendered a new video file, then just previewing your project most likely be something less than you would expect. When you push the play button, in clip mode, the program has to only play the clip, not much demand going on there. However in Project mode, it has to put all the edits, transitions, effects, titles, and audio together "on the fly". This is very demanding on a PC, thus will not be smooth, the audio may cut in and out.

If that's not what's going on then there is something else, which may have to do with the codec being used.

[sjj1805]

....It's an AVI file ......

Sorry but that doesn't help much.
There are a small handful of file extensions that describe that a computer file is a video. These include
avi, mpeg, mov, rm, wmv, qt, swf
Plus a few others.
Think of these as groups of of a certain form of video, within those groups are lots of individuals. Liken this to animals, there are dogs, cats, snakes, birds, rodents and so on.
Within these groups are several types. For instance a dog can be a Poodle, Jack Russell, Alsatian, King Charles, Greyhound etc.

The term avi can mean any one of perhaps a hundred different types such as DV, MPEG4, uncompressed, MJPEG, DivX, Xvid, RLE, YUV, Cinepak and lots more.

You need to be more specific.

[kebrinton]

Ron,

I always thought "rendering" referred to the creation of the MPEG-2 from the AVI file one was editing. Perhaps I'm taking one step more than most people. I edit the AVI file, with Overlay, VoiceOver, Background music, etc., and then I create a new AVI file so that all my additions are incorporated into the one track. AND THEN I "render" to MPEG. Perhaps I should use the word "rendering" to refer to any creation of a new file.

My procedures are based on what I learned back when Jerry Jones was helping us. Plus what both of you, Ken and Ron, and a few others, have taught us with the passage of time.

Based on my experience converting many of my own old analog tapes to digital video and eventually very nice DVDs, I strongly doubt that this recent experience of mine is due to some weird new codec. I do not have new software, a different computer, or changed procedures.

I'm intrigued by using Type 2 compression. I'll try it.

I'll also perhaps go with a direct jump to MPEG-2 from the edited AVI file.

Thanks for the suggestions. I'm probably too close to the operation to see clearly what I'm doing wrong.

K

[Black Lab]

I always thought "rendering" referred to the creation of the MPEG-2 from the AVI file one was editing. Perhaps I'm taking one step more than most people. I edit the AVI file, with Overlay, VoiceOver, Background music, etc., and then I create a new AVI file so that all my additions are incorporated into the one track. AND THEN I "render" to MPEG. Perhaps I should use the word "rendering" to refer to any creation of a new file.

Keith, that's the "old school" recommended workflow first designed by Jerry Jones. I, too, used to do it that way. But you are right, you are taking an extra step that is not needed. Just render your original avi file to the mpeg2. Will it help your current problem...?

[kebrinton]

Back again having "solved" the problem. But, as usual, I didn't have time to follow every suggestion given by forum members. And I don't really know why the problem went away.

I did get DVDs without a sound track problem, though. I split the original sound track off the video, and then deleted it. Then I recorded a "clean" new sound track directly from the camcorder to my sound-in port, and inserted it into one of the available tracks in Editing Mode. Played as a Clip, this new sound track sounded great. Played as part of the Project, it was just as fractured as the original.

BUT...I followed some of the good advice you gave, and crossed my fingers, changed my project properties to MPEG, and just went straight to Share > Create Video File/Same as Project Properties. That did take a much longer time than my usual Rendering. But the final rendered MPEG file was perfect.
I don't know why, but VS salvaged my project.

K

[Trevor Andrew]

Hi Keith

I think the problem may have been related to Smart Render.

When you rendered from Avi to Mpeg this literally disabled Smart Render, as every frame would have to be rendered.

I do not understand why you had a problem in the first place, that¡¦s computers for you!
May-be a corrupt capture or file.

Rendering from Avi to Avi ( as your normal process) may have been good if you had disabled Smart Render. (just a thought you understand) (but does it work)

Good luck and a happy new year