Quicktime Stutters

[DefcomDMC]

When I play a Quicktime clip; ie. movie trailer, in Quicktime player the audio has a wicked stutter out of my VT3 card. Any work arounds?

I don't have onboard audio and everytime I Murder...I mean Kill...I mean Reset Winrtme I don't get any audio until I open Internet Explorer again.

[Jim_C]

This may just be something we have to live with. Many users, including myself, have had the exact same problem re: QT on a VT machine.

You may want to try a search here for VT and quicktime etc. I do remember several users trying hard to fix it, but I don;t remember if anybody actually did.


Jim

[podro]

if you find it...please post it here!

same prob on a vt4

[chribba]

I have not tried this yet, but when i saw your problems it looks like a problem that i foud when i was transfering some clips to our videoserver... Somehow when i used DV with PCM audio, (DV type 2) it would stutter, and when i looked at the transfered clip the videoserver had left every other frame of the audio and that causes the stutter. When i renderd it out as a (DV type 1) with the audio compressed. it worked as it should...

Is it possible to render it out as a DV type 1 file and then convert it to a Quicktime file?has anyone tried that?


thanks
chribba

[DefcomDMC]

That may work for inside VT-Edit, but I was simply viewing a trailer off the quicktime website. The video was fine but the Audio was stuttering something aweful.

I tried an advanced search on the VT forums but I didn't come up with anything that applied to this. Hopefully someone will know.

[phase911]

I had the same problem using Quicktime 7. I installed version 6.5 and all worked fine.

[DefcomDMC]

Are you telling me that not only will my VT not use HD, but I can't watch HD with Quicktime either?!?

Did anyone else hear that? I think it was the last straw.

[Richvideo]

Quicktime 7 is whacked out on my system as well. It sounds like a delay of the audio track with a out of sync track on top of it . I think it is related to the 6 channel audio they use.

I have the LynX card and the VT3 card and the audio comes out the same on both...Some codec or Direct X filter on my system is breaking the Quicktime...Yes, 6.5 works but you cant watch the new HD trailers of King Kong with it :)

I actually converted the Quicktime trailer in Aura using the NT25 codec and it looked great.

Any Newtekers have any idea on how to fix this problem...Anyone else have Q7 running with 4.5 and not having a audio pronlem?

[Jim_C]

Any Newtekers have any idea on how to fix this problem...Anyone else have Q7 running with 4.5 and not having a audio pronlem?

On my system here at home I use the onboard audio from the motherboard for anything outside of VT. Doing this QT7 plays just fine. The main editor at work however, uses the VT card for all audio I/O and QT7 is whack on that.

[DefcomDMC]

I was trying to watch the King Kong trailer too:cry:

[ScorpioProd]

Sadly, the VT's audio drivers don't work right with QT 7 Pro 7.0.3.

The only real workaround is to enable your onboard audio for QT playback.

The program Quicktime Alternative has also been suggested, but in my investigation, it doesn't support the latest codecs, and it's frankly not the way I want to work with QT anyway.

[Richvideo]

Can we get a little patch to fix this Paul? It will not work with my Lynxone card either..They know about it. If you can't fix it can you ask Steve Jobs to take care of this :)
post from the Lynxone board

...Ahh - I listened to it with iTunes and it was fine (which is the default playback engine once you install QT7). I went back and listened with just the QuickTimer player and it was choppy. This is clearly a bug with the QuickTime player because it is setting our driver to 8-bit stereo even for 16-bit stereo files (I can see this in my debugger). I bet if Apple fixed this bug in the QTPlayer it would work fine.

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PaulTech
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Posted: November/16/2005 at 10:56pm | IP Logged Quote PaulTech
Apple apparently is aware of this problem (this isn't the only card that it happens to) and we'll be working with them to resolve it. Stay tuned....

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[ScorpioProd]

I'm glad to hear Apple is working on it, I'd love to see a QT 7 Pro 7.0.4 to fix it.

It's not something that Newtek can patch easily, they would have to rewrite their audio driver, which is based on a standard design that should work.

But honestly, if Apple doesn't fix it soon, they will have to, just as others are.

[tmon]

7.0.4 is working here on my VT4.6c workstation.

[ScorpioProd]

You're saying you are now getting 7.0.4 to play QT audio through VT's audio outputs without stuttering?

7.0.4 didn't do this for me when I tried it a while ago.

I then went back to 7.0.3 since I found a bug in the exporting engine of it back then. Not that 7.0.3 will play audio through VT hardware for me without stuttering, though. No 7 version of QT will, AFAIK.

[tmon]

You're saying you are now getting 7.0.4 to play QT audio through VT's audio outputs without stuttering?

Rats. I just double-checked this. Unfortunately, the answer to your question is no. When playing back a Quicktime movie in Quicktime player, while using the VT3 card's audio output, I still get a stutter with 7.0.4.

However, and this is where I saw "progress" on my workstation, if I change my Windoze "Sounds and Audio Devices" settings to use my onboard audio chip, I am able to play Quicktime moves with the 7.0.4 player without stutters. I was not able to do this with 7.0.3. My enthusiasm superceded a more thorough confirmation of the VT card issue. The installation of 7.0.4 clearly doesn't represent a solution on the VT side of things.

The NewTek crew will need to look out for this going forward with VT[5], SpeedEdit VT and the standalone SpeedEdit if they haven't fixed it already.

[tonsofpcs]

Has anyone resolved this issue or found a viable workaround yet?

[SCS]

I'm using 6.5.1 - still stutters - any suggestions?

[tmon]

I'm not the expert on this, but my understanding is that this is an issue that NewTek is aware of and something that they will be taking care of on their end. I.e., it's not an Apple issue per se.

Option 1:Use a different sound card to view and listen to quicktime movies.
Option 2:Purchase Quicktime Pro and export move to AVI prior to playback.

That's about all I have for now.

[inquisitive]

well will NT be resolving this issue? because now we have this to worry about


http://www.us-cert.gov/cas/techalerts/TA06-132B.html

and what about VT5 will VT5 also have an issue w/ quicktime?

[ScorpioProd]

"Worry about?" This is GREAT news! This means there's a brand new QT 7.1 to try and see if that works with VT now! :)

Yes, I'll try it and report back!

As for VT[5], since the audio hardware isn't changing, if there is a problem in VT[4], there will be in VT[5] as well unless Newtek fixes it.

[tmon]

I installed 7.1.

As expected, the playback of Quicktime audio still stutters when playing back audio with the VT card.

Given the improved QT support promised in SpeedEdit, chances must be good that the crew will be addressing this issue in the next release.

[inquisitive]

Thanks for the report. Too bad we have these issues.

[ScorpioProd]

Well, OK, then the ball is back in Newtek's court. It's up to them to solve it.:newtek:

[sierra]

I too have this problem ever since I upgraded to QT7Pro. Before I wave goodby to the thirty bucks I spent to upgrade to QTPro, I am willing to convert to AVI. I just tried it and it works fine.

At least I can end the problem of having to download to the other computer to hear any MOV's with sound.

Thanks for this helpful thread.

[inquisitive]

yes, one of those things that seems have been pushed under the rug. :)

[ScorpioProd]

Well, you're not gonna see anything happen with QT 7.x working with VT[4] 4.6c, but it should work with SpeedEDIT and VT[5].

[Ty Catt]

I'm running into the same stuttering problem.

Does anyone know a FREE download to QT6?

I've found lots of sites which need you to subscribe and pay as the LAST step, of course!

Thanks~

Ty

[KSTAR]

Since this hasn't been fixed yet.

If I enable and configure my onboard audio to work with QT 7.1 will this cause any conflict with VT 4.6? Right now its disabled because I thought thats what VT required?

[ScorpioProd]

Nope, VT doesn't care where you route your system sounds.

Go ahead and turn on your on-board audio for everything except VT.

[KSTAR]

Cool :thumbsup:

[Thalek]

So, I can plug my speakers into my Toaster, or into my computer's sound card, but I can't use them with both simultaneously without Quicktime stuttering.

Is that correct?

I know that SpeedEdit is quite content to play .MOV files, but it also doesn't like the Video Toaster audio, so an ability to play MOVs from SpeedEdit does not automatically convince me that there will be no problems with stuttering from the VT[5] upgrade.

Apropos of that, has ANYone heard of a likely release date?

[inquisitive]

So, I can plug my speakers into my Toaster, or into my computer's sound card, but I can't use them with both simultaneously without Quicktime stuttering.

Is that correct?

I know that SpeedEdit is quite content to play .MOV files, but it also doesn't like the Video Toaster audio, so an ability to play MOVs from SpeedEdit does not automatically convince me that there will be no problems with stuttering from the VT[5] upgrade.

Apropos of that, has ANYone heard of a likely release date?

uh? that issue didnt even occurred to me...

So how do you deal with VT4 projects in SE? you don't? or you have to import the projects delete the audio and reimport the audio from SE?

Does a problem exist taking a SE project back into VT4 (if its not HD)?

[ScorpioProd]

So, I can plug my speakers into my Toaster, or into my computer's sound card, but I can't use them with both simultaneously without Quicktime stuttering.

Is that correct?

Well, you can use them simultaneously all you want. The VT[4] doesn't play QT, so as long as you don't use the VT card audio output for your QT 7, your QT 7 will play just fine through whatever other audio output you have on your computer.

Just set your system sound to use an audio output other than the VT card, VT[4] itself will still automatically use your VT card, with no "switching" back and forth for the system sound required.

[ScorpioProd]

So how do you deal with VT4 projects in SE? you don't?

Not sure what you mean. Most VT[4] projects will load into SE fine.

or you have to import the projects delete the audio and reimport the audio from SE?
Well, again, VT[4] doesn't play QT, so if you're using QT in one of Newtek's editing applications, it's in SE, not VT[4].

Does a problem exist taking a SE project back into VT4 (if its not HD)?
Projects are not backward compatible. You can't take a project from SpeedEDIT and expect to load it in the older VT-EDIT.

It's also important to remember that the SpeedEDIT 1.0 that is out currently is a stand-alone program. It has NO connection with the VT hardware whatsoever.

When VT[5] comes out, that will have a different version of SpeedEDIT that will tie into the VT hardware.

[Thalek]

Well, you can use them simultaneously all you want. The VT[4] doesn't play QT, so as long as you don't use the VT card audio output for your QT 7, your QT 7 will play just fine through whatever other audio output you have on your computer.

Just set your system sound to use an audio output other than the VT card, VT[4] itself will still automatically use your VT card, with no "switching" back and forth for the system sound required.

Uh, let me phrase it a different way.

I can play QT through my computer's sound card (after undoing the re-mapping to the VT card), but then, in order to hear audio while editing in VT, I have to plug my speakers into the VT card, correct?

And therefore, to make use of both my regular computer audio and the VT audio, I would have to swap connections. Correct?

That's what I was asking about, having only one set of speakers at this time.

(If so, it's a shame they didn't offer to re-map the Toaster audio to the computer's audio card, instead of offering to re-map the computer's audio to the Toaster card . . .)

[ssdcinc]

Uh, let me phrase it a different way.

I can play QT through my computer's sound card (after undoing the re-mapping to the VT card), but then, in order to hear audio while editing in VT, I have to plug my speakers into the VT card, correct?

And therefore, to make use of both my regular computer audio and the VT audio, I would have to swap connections. Correct?

That's what I was asking about, having only one set of speakers at this time.

(If so, it's a shame they didn't offer to re-map the Toaster audio to the computer's audio card, instead of offering to re-map the computer's audio to the Toaster card . . .)


...just take the output from the toaster card and loop it through
the input of the internal sound card, then put your speakers into
the internal sound card, now you will get both audio outputs
though 1 set of speakers.

[Thalek]

...just take the output from the toaster card and loop it through
the input of the internal sound card, then put your speakers into
the internal sound card, now you will get both audio outputs
though 1 set of speakers.

I'll take a look at that and see if I can make it work. Thanks!

[Jim_C]

...just take the output from the toaster card and loop it through
the input of the internal sound card, then put your speakers into
the internal sound card, now you will get both audio outputs
though 1 set of speakers.

And...... transport back in time.

:D

[Thalek]

...just take the output from the toaster card and loop it through
the input of the internal sound card, then put your speakers into
the internal sound card, now you will get both audio outputs
though 1 set of speakers.

Yep, that did the trick. Thanks! I guess it's possible to teach an old dog old tricks, at least. [wry smile]