Video/Audio speed reduction problems. at DVinfo.net

Dennis Murphy · January 31st, 2008, 04:35 PM

I have video footage that I want to reduce by 50% speed.
I've been doing this by right clicking on the footage and in the properties display, changing the 'playback rate' from 1.0 to 0.5.
Unfortunately, this only reduces the speed of the video. I need the audio for this particular project to be slowed down by the same amount.
I know that Ctrl dragging the clip longer slows the audio as well, but I need to do it by 50% and find the dragging process infuriating in terms of finding that 50% speed reduction.

Any help hugely appreciated.

Edward Troxel · January 31st, 2008, 04:47 PM

After you set the video, right-click the AUDIO, go into the properties, and set the playback rate to .5 the same as you did for the video. They they will both be changed.

Dennis Murphy · January 31st, 2008, 05:15 PM

I don't have that option available when I right click on the audo file.

Mike Kujbida · January 31st, 2008, 06:17 PM

Change the setting in the "Method" box from "None" to "Classic".
Adjust as desired.

Dennis Murphy · January 31st, 2008, 06:44 PM

Cheers for the feedback y'all, but when I switch it from 'none' to 'classic', I still don't get an option where I can adjust the playback rate.
There is an 'original length' 'new length option', but having to calculate 50% of the original length then type it in on every file will do my head in.
Btw, I'm using Vegas 7.

Don Bloom · January 31st, 2008, 08:00 PM

there is a NON-REALTIME FX that is called (IIRC) TIme Stretch. You can adjust the audio using that FX.

Don

Edward Troxel · January 31st, 2008, 09:36 PM

Ok, try this:

Go to View - Active Take Information

Now when you use CTRL and resize the event, the percentage change will be displayed at the right edge of the audio track.

Alternately, you could turn on "Ignore Event Grouping" and CTRL-resize the audio to match the video you previously changed.

Dennis Murphy · January 31st, 2008, 09:39 PM

Tried that time stretch, jeepers, it works, but it creates a new file and if you've trimmed the clip you're stuffed as it does the whole thing.

I wish there was an equally simple way of reducing the audio speed as there is of the video. Vegas is obviously capable of doing it simply due to how it stretches everything when you do a Ctrl drag of a clip... but you can't specify an exact percentage doing it that way.

Aaaargh!

Edward Troxel · January 31st, 2008, 10:42 PM

Quote:

Originally Posted by Dennis Murphy

Vegas is obviously capable of doing it simply due to how it stretches everything when you do a Ctrl drag of a clip... but you can't specify an exact percentage doing it that way.

Actually, you CAN - via a script. I use Excalibur to do this all the time.

Dennis Murphy · January 31st, 2008, 11:06 PM

Quote:

Originally Posted by Edward Troxel

Actually, you CAN - via a script. I use Excalibur to do this all the time.

Thanks Edward.
I just tried the 'Active Take Information' solution - fantastic. That's a lot more workable.
I just downloaded the trial of excalibur, and tried the duration adjustment, but still it only affected the video stream. It is handy how it lengthens the clip to what the new duration is.
Is there a way of getting it to do the audio automatically in conjunction with the video?
Cheers.

Edward Troxel · February 1st, 2008, 10:00 AM

Yes. You have to SELECT the events you want adjusted. It works on selected events.

Dennis Murphy · February 1st, 2008, 09:32 PM

Worked a treat Edward. Now 'that' is a timesaver!
Cheers.

Edward Troxel · February 2nd, 2008, 08:44 AM

Quote:

Originally Posted by Dennis Murphy

Worked a treat Edward. Now 'that' is a timesaver!

Scripts - the best kept secret of Vegas.

January 31st, 2008, 04:35 PM	#1
Dennis Murphy Major Player Join Date: May 2006 Location: Whangarei, New Zealand Posts: 396	Video/Audio speed reduction problems. I have video footage that I want to reduce by 50% speed. I've been doing this by right clicking on the footage and in the properties display, changing the 'playback rate' from 1.0 to 0.5. Unfortunately, this only reduces the speed of the video. I need the audio for this particular project to be slowed down by the same amount. I know that Ctrl dragging the clip longer slows the audio as well, but I need to do it by 50% and find the dragging process infuriating in terms of finding that 50% speed reduction. Any help hugely appreciated.

January 31st, 2008, 04:47 PM	#2
Edward Troxel Sponsor: JET DV Join Date: Dec 2001 Location: Southern Illinois Posts: 7,953	After you set the video, right-click the AUDIO, go into the properties, and set the playback rate to .5 the same as you did for the video. They they will both be changed. __________________ Edward Troxel [SCVU] JETDV Scripts/Scripting Tutorials/Excalibur/Montage Magic/Newsletters

January 31st, 2008, 09:36 PM	#7
Edward Troxel Sponsor: JET DV Join Date: Dec 2001 Location: Southern Illinois Posts: 7,953	Ok, try this: Go to View - Active Take Information Now when you use CTRL and resize the event, the percentage change will be displayed at the right edge of the audio track. Alternately, you could turn on "Ignore Event Grouping" and CTRL-resize the audio to match the video you previously changed. __________________ Edward Troxel [SCVU] JETDV Scripts/Scripting Tutorials/Excalibur/Montage Magic/Newsletters

February 1st, 2008, 10:00 AM	#11
Edward Troxel Sponsor: JET DV Join Date: Dec 2001 Location: Southern Illinois Posts: 7,953	Yes. You have to SELECT the events you want adjusted. It works on selected events. __________________ Edward Troxel [SCVU] JETDV Scripts/Scripting Tutorials/Excalibur/Montage Magic/Newsletters

January 31st, 2008, 05:15 PM	#3
Dennis Murphy Major Player Join Date: May 2006 Location: Whangarei, New Zealand Posts: 396	I don't have that option available when I right click on the audo file.

January 31st, 2008, 06:17 PM	#4
Mike Kujbida Inner Circle Join Date: May 2005 Location: Windsor, ON Canada Posts: 2,770	Change the setting in the "Method" box from "None" to "Classic". Adjust as desired.

January 31st, 2008, 06:44 PM	#5
Dennis Murphy Major Player Join Date: May 2006 Location: Whangarei, New Zealand Posts: 396	Cheers for the feedback y'all, but when I switch it from 'none' to 'classic', I still don't get an option where I can adjust the playback rate. There is an 'original length' 'new length option', but having to calculate 50% of the original length then type it in on every file will do my head in. Btw, I'm using Vegas 7.

January 31st, 2008, 08:00 PM	#6
Don Bloom Inner Circle Join Date: Jan 2003 Location: Chicago, IL Posts: 6,609	there is a NON-REALTIME FX that is called (IIRC) TIme Stretch. You can adjust the audio using that FX. Don

January 31st, 2008, 09:39 PM	#8
Dennis Murphy Major Player Join Date: May 2006 Location: Whangarei, New Zealand Posts: 396	Tried that time stretch, jeepers, it works, but it creates a new file and if you've trimmed the clip you're stuffed as it does the whole thing. I wish there was an equally simple way of reducing the audio speed as there is of the video. Vegas is obviously capable of doing it simply due to how it stretches everything when you do a Ctrl drag of a clip... but you can't specify an exact percentage doing it that way. Aaaargh!

February 1st, 2008, 09:32 PM	#12
Dennis Murphy Major Player Join Date: May 2006 Location: Whangarei, New Zealand Posts: 396	Worked a treat Edward. Now 'that' is a timesaver! Cheers.