Trouble adjusting playback rate in vegas.

[Shaun Gephart]

Hello,
I’m new to Vegas and have a question I hope is simple.
On the bottom right of the program it says rate. I adjust this to .68 for a nice deep slow pitch on the video I have in the timeline then I watch it to be sure it’s how I like it then click make movie. However when the movie is made and I click on it the audio is back to normal. Is there a step I am missing here? I can’t seem to make a movie with low or high pitched audio please help.

S. Gephart

[John Rofrano]

That rate is just a playback rate. It doesn’t affect the video (as you have seen). To affect the audio, right-click the event, select properties, and change the playback rate there using the Time stretch / pitch shift controls.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Shaun Gephart]

Thank you for the tip. I also found that using the plus and minus keys also give me the desired effect. I’ve been using this program now for less than 24 hours and I’m sure as I move along this site will help me tremendously.
S. Gephart

[Steve Bertone]

Hi John . As a newbie to video editing and to playing with vegas 12, i have learned a bunch from reading this thread as it had all the questions I was asking myself, answered. Bless google. In any case, I had another question that relates. Other than being able to set points and create curves with a velocity envelope, is there any different between say playing a clip at a straight 25% speed with velocity and just adjusting the playback rate in properties to .25? Thanks!

[John Rofrano]

[Steve Bertone] “Other than being able to set points and create curves with a velocity envelope, is there any different between say playing a clip at a straight 25% speed with velocity and just adjusting the playback rate in properties to .25? Thanks!”

No difference. As you pointed out, the playback rate is a fixed rate, while the velocity envelope allows you to gradually change the rate over time.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Steve Bertone]

Thanks. So that being said, I like to shoot a lot of video with gopro cam at 848x480p 240 fps. To play this accurately at 24 fps(without vegas doing much work filling in frames etc, would it be best to set a straight velocity at 10% (.1*240 = 24)? Can’t figure out either how to render in 848×484 in vegas 12, or is it best just to render that clip in 1080p at 24 fps? Thanks for the help. Ive been trying to learn a lot in a short period. Watched a lot of youtube vids and reading, playing with vegas to get where I am, but cant find the answers to these Q’s anywhere. Thx!

[John Rofrano]

[Steve Bertone] “To play this accurately at 24 fps(without vegas doing much work filling in frames etc, would it be best to set a straight velocity at 10% (.1*240 = 24)?”

That’s one way to do it. The other is to just Disable Resample on the Event Properties page and that will have the same results. Vegas will just use every 10th frame when rendering.

[Steve Bertone] “Can’t figure out either how to render in 848×484 in vegas 12, or is it best just to render that clip in 1080p at 24 fps?”

You need to make a custom template. I would start with the MainConcept AVC template Apple iPod 640×480 Video and change the Frame size to (Custom frame size) and the Width to 848. Optionally increase the bit rate for high quality video, then save it with a descriptive name for future use.

BTW, why the odd frame size? Where are you hoping to deliver this video because most delivery is 16:9 which would be 853×480.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Steve Bertone]

Please clarify if you can. If I disable resampling, and I render in 24 fps it will only play every 10th frame, but it wont play it in slow-motion. It will only play in slow motion if I adjust playback rate in properties or use velocity. My goal is to have it play every one of the total frames from the 240 fps 1 minute clip/event but just play them at a speed of 24 fps and have it be as sooth as possible.

Do you know the reason why we can set the velocity speed maually with no restrictions but we cant do the same in playback rate in properties?

Thats a good question on the 848x480p…that is what the gopro records 480p at and I didnt do the math and just wanted to keep it in its native size. Does rendering to 1920 by 1080 affect the quality of the video if it was recorded at 848x480p or any other lower resoliution? Thanks again for the answers

[John Rofrano]

[Steve Bertone] “Please clarify if you can. If I disable resampling, and I render in 24 fps it will only play every 10th frame, but it wont play it in slow-motion. It will only play in slow motion if I adjust playback rate in properties or use velocity. My goal is to have it play every one of the total frames from the 240 fps 1 minute clip/event but just play them at a speed of 24 fps and have it be as sooth as possible.”

Sorry, I misunderstood what you wanted to do. You are correct that disabling resample and rendering to 24p will not produce slow motion. You want to change the playback rate to produce slow motion.

[Steve Bertone] “Do you know the reason why we can set the velocity speed maually with no restrictions but we cant do the same in playback rate in properties?”

Actually Velocity envelopes are restricted to 300% increase. The restrictions are the restrictions that the programmers felt were appropriate. If you need to speed up faster you can create a nested project and drop that into another project and speed it up again indefinitely. You can also use a plug-in like VASST TimeWarp that will create an image sequence up to 10000x.

[Steve Bertone] “Thats a good question on the 848x480p…that is what the gopro records 480p at and I didnt do the math and just wanted to keep it in its native size. Does rendering to 1920 by 1080 affect the quality of the video if it was recorded at 848x480p or any other lower resoliution? Thanks again for the answers”

That’s strange of GoPro but OK. HD 1920×1080 has 5 times the resolution SD 848×480 so if you render to 1920×1080 it will stretch the video as it resizes it 5x and it will probably look softer because you are going from SD to HD.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Steve Bertone]

Thank you! That all makes sense and I put it to good use and it all came out great. I tried a separate project where I was creating a time lapse of a storm to clear sky. Took a 7MP picture every 2 secs for about 2 hours. Played each one back at .02 secs so I could render correctly and play back at 30 fps. I rendered in Sony avc, 1280x 720p 30 fps mp4 and it just doesn’t look as crisp as the pictures themselves. It is like is lost detail. I set the bit rate to 10mbps but that didn’t seem to make a difference. Any tip on how to preserve the quality of the photo in the time lapse? Do I need to raise the bit rate even more? Thanks again for the good answers