From http://livedocs.adobe.com/en_US/PremierePro/3.0/help.html?content=WS481C07C0-8AFA-4aa9-9968-1FB5CA160C19.html : "When you vary the speed of a clip with linked audio and video, the audio remains linked to the video, but remains at 100% speed, regardless of changes to the video speed. It won’t remain synchronized."
Any way to avoid this? When I change the speed of a clip, I want the audio to follow the same speed as the video. Any way to achieve this?
Use speed/duration to have audio follow video.
That definitely works for clips with few and simple changes in speed, but what can I do about gradual changes? Slicing up an audio track into 10 parts to provide the illisuion of a gradual change in audio speed doesn't sound fun. There has to be an easier way.
In Premiere, there isn't. You may have to go to Soundboth or Audution for this.
I've never used Soundbooth and haven't the slightest idea on how to do this.
From what I understand, I need to copy the time remapping's keyframes from Premiere over to Soundbooth, so that I can achieve the same remapping with the audio as I did with the video. Except I don't know how.
That's where the Soundbooth Help file and forums come in handy. (Preferably in that order.)
Time remapping allows gradual speed changes in video, but audio does not follow. It would make a good feature request to have a check box, that allows the option, though.
Can't say as I see any real use of audio following video. Either the pitch goes down or up with it, or, I believe you can maintain pitch but the distortion and noise makes it useless imo. Minor speed changes may work but major change doesn't.
I can think of at least a dozen movies off hand that use time remapping, and they certainly didn't just dump the audio... If you're editing a video of someone talking and you slow it way down, why would you want their voice to continue at normal speed and get out of sync with their mouth? Whether or not the audio would need some tweaking at the end is besides the point, keeping it's duration and easing as close to the videos as possible would only make sense unless you had explicitely locked or unlinked the audio from the video.
Did anyone ever find an easy way to do this?
[Edited for content]
I Know it might be a bit late, but since google brought me here, I thought I would update this with how I do it.
To change the speed of a clip at various parts and have the sound change also, is a bit tricky but ill explain it.
first go into the time remapping panel and add the start and end keyframes for your part to speed up/slow down.
Then alt click the audio to select it ONLY. Use the razorblade tool to cut the audio at both parts where the keyframes are, you will see the lines on the clip to guide you.
Then time remap the keyframed section, alt click to select the audio only, and use rate stretch to make the audio match the length of the video. Voila.
I used that technique today and it works great and doesn't take too long.
I'm not following. When you ramp video from one speed to another, there are 3 sections that matter:
-The initial speed (e.g. 100%)
-The re-mapped, ramped part (e.g. ramp from 100% to 10%)
-The speed held at the different date (e.g. 10%)
If you are working with just a piece of the audio in the re-mapped/ramped portion, how would the rate stretch tool emulate the ramping? The rate stretch tool doesn't ramp, it changes speed equally across a clip.
You can easily cut the audio at the key frames and take care of part 1 and 3 using "Speed/Duration..." (e.g. 100% on one, 10% on the other), but again the rate stretch tool does not ramp, it merely changes speed/duration.
What am I missing?
I determined X82's method doesn't work (doesn't actually ramp).
I tried Audition. It has has a very convoluted pitch/stretch tool - it didn't make sense/wasn't viable for this purpose.
AFAIK audio speed ramping is not possible in Premiere (lame). Harm and Jim are right (they are MVPs and apparently know their $##@). I was trying to duplicate the ramping the iPhone 6 plus applies to its 240fps clips (when you copy the clips to your computer you lose that ramping).
After Effects is the way to go with "Enable Time Re-mapping", which also applies to the audio. Here's the output for my video Iphone 6 Plus 240fps + Image Stabilization Test - Mountain Bike Drop + Jump - YouTube.
There are tutorials on youtube for this - some of them super long and convoluted, leaving critical steps out. A shorter, good one is here After Effects Tutorial | Ramped Slow Motion - YouTube.
just tried X82's method and it actually worked (for me / my purpose)
you can't adjust the audio perfectly to a gradually speed up video, but in my case it doesn't need to be too accurate as I'm speeding up the video ~300x+, so you wouldn't understand a word anyways.
fyi: i also unlinked the audio from the video
so thank you very much, at least it helped me ^^
"Can't say as I see any real use of audio following video."
I love these kind of comments. If somebody posted a question asking how to do something, obviously they have a need to do it! Just because you don't have a use for something, doesn't mean the rest of us don't! I would definitely like to have audio follow video when I make complex time maps on the timeline.
How is this even an aswer in a creative forum?
lolol ou guys are hilarious. after effects is the proper route to go. ae>right click clip>time remap>key frame>ramp>export and CHECK the audio box. real ramp with audio.
It's funnier that you make fun of people asking for a feature that probably didn't exist in 2009. Almost as funny as me replying to you four years later.
Or 14yo me using that feature since 2005.. lol
+1 for adding time remap to premere for audio on video clips that have audio. If aftereffects can do its should be an easy port no?