[Dale Spetz]

Kelly, the only changes that I have made, since the arrival of this audio problem was the upgrade to 10c and adding a USB3 card and ext. drive (for source files). I do not recall experiencing this issue before 10c. And I have using Vegas nearly every day since Vegas 7.

You don’t happen to be working with USB-3.0? I can’t imagine that it is related to this problem, but still I’m trying to rule out any possible source.

[Dale Spetz]

I am experiencing the same, as reported here:

https://forums.creativecow.net/readpost/24/926581

It does seem to occur at the end of audio events, when there should be silence. For me the only workaround has been to close and re-open Vegas 10c (and the project).

But, this is a major problem, as it seems to re-appear randomly.

[Dale Spetz]

It happened once again and I notice that, at least, one other on this board is having the same experience:

https://forums.creativecow.net/readpost/24/926672

This time, a music event ended with a sound blip from the previous music event. Again, the audio anomaly was not visually present on the wave graph and did not exist with this same WAV file in SF.

Deleting and then re-inserting the music event did not resolve. The workaround was to close Vegas and then re-open Vegas and the project.

The problem, of course, is that this audio anomaly appears rarely and intermittently.

[Dale Spetz]

Also, since I have you on the audio topic, this subject has long puzzled me (back to Vegas 7, I think):

I have noticed that my audio track db settings (on the far left side), sometimes mysteriously switch from 0.0 to -0.1. For a long time I thought that I was accidentally changing this setting, but it has happened too many times. And, it always switches to -0.1 (no other non-zero value).

It is not a big deal, but I am wondering if anyone has had this experience. Maybe my computer is possessed.

[Dale Spetz]

Thanks John and Danny for your replies.

The weird anomalies are intermittently occurring on music events. They sound like very brief (less than a second, usually) overlays of some segment of the same music event. The anomalies do not appear in the wave pattern and, as I mentioned, they do not play/appear when the music event is opened in SF.

I think that the work-around has been to delete the event and simply re-apply it to the track. But, I may have had to close and re-start Vegas. I just don’t remember, but will make note next time.

I’ve used Vegas almost daily since version 7 and this behavior is new.

No new plug-ins, though I have recently added a USB-3 card and USB-3 source ext. source drives. They seem to act normally, but I am a little suspicious of them.

Also, I have had (always) the audio filter defaults removed.

If this is unique to me, then it most be something in my system.

[Dale Spetz]

Sounds like good advice. Thanks again!

[Dale Spetz]

Thank you, John, for confirming this!

I believe that I’ve got this MPEG-2 PAL conversion down, per your MainConcept recommendation. But, if I apply any value to “VBV Buffer Size”, the output goes blotchy. With noGOP, is a VBV value necessary for TV broadcast? Can I leave it at zero?

[Dale Spetz]

I recognize those devils from my old Ulead Media Studio Pro days. They would randomly appear from a render. I, thankfully, have never seen them produced in Vegas.

If you are unable to re-capture or re-render the source AVI, you can “patch” non-movement bad spots by snapshoting the good frame before (or after)the bad one. Layer it underneath a snapshot of the bad frame in photoshop, then erase the bad areas. Merge the layers together, then overlay the repaired frame over the bad frame in Vegas.

Tedious, but doable for non-movement areas.

Re-creation of the source video and blending is a far better option, as (at least with Ulead)the bad spots would appear on different random frames—so you could splice the bad frames out, relatively quickly.

[Dale Spetz]

Well, this is very good news. I assume that this is the best codec to use also for an HD MPEG-2 “NTSC” output?

I am getting the impression that as we move away from tapes, broadcasters are preferring the MPEG-2 format for HD delivery. Would you agree with this?

I have been archiving episodes with the Avid DNxHD codec, but have not seen any broadcasters that accept this format.

[Dale Spetz]

John, I greatly appreciate your reply and info!

I had done a sample render with this codec and it “appeared” that the conversion from 60i to 50i was smooth. Frame by frame, it looked very good.

Can I believe what I see in Vegas? Or, might Vegas give me an artificial depiction of the 50i output?

I ask because I have been told that this conversion from NTSC to PAL is a tricky one (though this belief may be from the old analog days).