Yes Bob - the most infuriating thing is that most of the details they ask for are already in my user profile. It's a definite deterrent to bothering, which I tried to avoid by using the "illegal" method.

The support ticket and the forum profiles don't talk to each other. One must fill out separate (duplicate) information and create separate accounts for each type of communication. I agree that a feature request probably isn't going to get the kind of attention this issue deserves.

Yes, musicvid, they don't talk to each other, but I'm suggesting they should. For a registered user to contact support we should be able to insert our email address and password, and all the boxes asking for information already on this site should automatically be filled in.

Anyway, here's a pic of one of the rogue wmv events - the audio to the right of the triangle is a repeat of the start:

Peter,

I have some bad news, some good news and a clue.

The bad news: I was able to duplicate your problem in my 1920x1080 60i AVCHD Vegas 10.0a Project, while rendering to WMV.

The good news: The actual rendered WMV does not appear to exhibit the problem (i.e. the extra audio is not at the end of the clip). I confirmed this via two independent methods: 1) Opening the clip in Sound Forge, and 2) Playing the clip in WMP. It is only when one drags that file to the Vegas timeline do we see the glitch you observed.

The clue: When dragging the WMV clip to the timeline, Vegas give the following message:



I don't quite understand what this means, but maybe someone better versed in Vegas internals can interpret this in order to give Vegas support the info they need to fix the problem.

Good Luck!
...Jerry

Thanks Jerry for the good, the bad and the clue. [I couldn't find a synonym for clue which rhymed with ugly ;) ]

First, regarding the clue - that message is I think just to occupy time while Vegas draws the wave form in the audio event - I have ticked the "Do not show this message again" box, and the wave form still appears in due course.

Thanks for the bad news - it confirms that this is not just restricted to MPEG2 to WMV renders, which should help SCS track it down.

Your good news however does not tally with my experience. In fact I first discovered this problem when playing the rendered clip in WMP, thankfully before I delivered it to my client. I played it and the last bit of audio was missing and replaced by the looped beginning. So, for me it isn't just a problem with the Vegas timeline.

Thankfully my solution was to repeat the same job in Vegas Pro 9 and the rendered wmv files were as they should be, and I have now delivered them.

Thanks for your help.

Peter

For certain types of audio media Vegas always creates a proxy file e.g. 12/32Khz PCM. The message describes exactly the reason why Vegas does this, it does not indicate anything is wrong, broken or that there's a bug.

Bob.

Peter, I have no solution, but I am curious about something here.

1. What is the source Video and Audio format
2. What are the project properties (both video and audio)
3. Is the audio in sync throughout the entire video, and then just falls off at the end?
4. If you insert 2 seconds of silence at the end of audio clip, or extra black and the end of the video clip, does the audio cut out at exactly the same spot?
5. If you render just the last 10 seconds of the clip, does it complete, or do you get the same glitch?

I think these are all the scenario's I'd want if I were trying to run this down. I helped another Vegas user with a maddening issue like this using Cineform. But that was even more insidious.

" The message describes exactly the reason why Vegas does this, it does not indicate anything is wrong, broken or that there's a bug."Certainly true. However, might this message be a clue that Peter's problem could be in the creation of the proxy rather than the actual render?

...Jerry

Here's another clue. If you render WMV Video only, you get a Video track that matches the length of the source. Then render a WMA sound track, the sound track is several "frames" shorter than the source track.

If you render the sound to mp3 or wav, the sound & video tracks match up perfectly.

...Jerry

btw: If I use Microsoft Expression Encoder (arguably the gold standard of WMV encoders), the audio & video match perfectly.

EDIT: Whoops, I think I "engaged my mouth before my brain was in gear". Upon closer inspection, I see mismatches no matter what gets rendered. WMA from Vegas is the worse mismatch with the orginal, but other audio formats do not match up with the original either. Incidentally, I'm not surprised that the Video is one frame off as the mts clip is interlaced and the wmv clip is progressive.



Now, I'm not sure if I've helped in this thread or just managed to confuse things. Sorry!

This bug is a show stopper for me.

Thanks for all the info and work you folks have put into figuring this out.

I'll wait to upgrade until this issue is resloved TOTALLY.

Thanks Perrone, heres the info:

1. My source format was Video: MPEG2 PAL 4:3 720 x 576, Audio:AC3 48 Khz
(Jerry got a similar result using 1920 x 1080 AVCHD 60i source footage)

2. Project Properties are Standard PAL DV 720x576. Audio, as per the (still) incorrect Vegas Template was 44.1 Khz, but exactly the same result came after changing this to 48 Khz.

3. Audio is in sync throughout, then 12 frames before the end, where the triangle appears, it stops and repeats the audio from the first 12 frames.

4. Adding 2 sec of Black without changing the audio produced a WMV which had all the audio from the original ..... then a second or so of silence, then 20 frames before the end, the triangle appears and the first 20 frames of audio were repeated during the Black.
(The number of frames repeated so far seems to vary between 13 and 22)

5. Interesting. Rendering the last 10 seconds to wmv there was no problem - all the audio was there. (The original clip was only 1 min 5 sec)
I also rendered the whole clip to DV AVI without problem, so it does seem to be a wmv problem.

edit: To confirm that the source format doesn't seem to matter, I rendered using the DV AVI I created as source, and the same problem was there in the WMV - the last 20 frames of audio looped/repeated

I haven't been able to duplicate the problem. Could it be limited to PAL projects?

"I'll wait to upgrade until this issue is resloved TOTALLY."
So, you'll pass up the $100 discount over a single issue?

Workaround - render to an AVI intermediae first.

I'd agree that it's not an issue to delay an upgrade over, but as I said in my last post, the avi intermediate makes no difference, unless you then put the avi into Vegas 9 or 8 to render to wmv.