Audio Speed change

Hello, does anyone know how to change the audio speed in FCP?
Please let me know.

Select (highlight) the clip in the Timeline and hit Command j to open the Speed control. Enter the speed you want. NOTE: speed changes may not take if a conflict occurs with another clip in the Timeline. You may need to copy the clip to an empty Sequence or to the end of your open Sequence then move it into place after the speed change.
-DH

Similar Messages

Pitch compensation for audio speed change?

Is there a formulaic way to compensate for the pitch change after a speed change on audio?
- control-click on an audio track
- select "Speed..."
- change the speed (for example 130%)
- now, notice the speed has changed, but the pitch is now higher
- there is an audio filter for this: AUPitch
- BUT: how do I figure out what the value for the "pitch" setting should be to get it back to roughly the pitch it was before I changed the speed?
(From trial and error it looks like it's around -400 for a 130% change)

hello monkeywidget,
if memory serves, the audio pitch works in cents so 100 cents = 1 semitone; 1200 cents = 1 octave; 200% speed = double speed = 1 octave up so -1200 in the pitch shift would compensate.
you'll have to experiment from there, but that'll put you in the right direction.
by the way, the audio filters in FCP are crap (since apple doesn't do good audio software? ... ) so i'd only use the internal filters as temp.
R.

Imported Audio Speed Changed

I have an iPhone video imported into iMovie (10.0.7). I also open this same video file into QuickTime (10.4) and Export the Audio Only into a m4a file.
When I import this audio file into iMovie and line it up at the start of the movie, I find that after four minutes, the imported audio is slow by about ¼ second. I know how to fix this... but WHY is this happening (and shouldn't it be fixed)?
I have an old Cisco FlipVideo camera and used it to film the same thing that I filmed with my iPhone. Those two sources are lined up perfectly after the 4 minutes. Why should imported audio that started at the same source be any less accurate?
Thanks for your thoughts!
Barry

http://www.bulletsandbones.com/GB/GBFAQ.html#toofast

Audio import changes speed of audio

Hi,
I am trying to edit and mix sound effects and music for a FLASH animation in ProTools. After much trial and error I figured out how to make an accurate Quick Time of my FLASH file to spot sounds to in ProTools. The problem is when I import my audio into FLASH, it speeds up making it out of sync with the picture. I did several tests and it looks like for ever minute of ProTools the audio in FLASH speeds up 2 frames. Both programs are running at 24 FPS.
It is not a NTSC vs Flim speed issue. All other programs read my PT audio file correctly and show it to be the correct length with the SFX where I placed them. FLASH speeds it up, making my animation not time to the music and effects causing me to painfully resync all my layers.
How do I accurately export a sound file into an AIFF format and import it into FLASH without FLASH changing the speed? I have my audio set to Stream as it should be. After 3 minutes my audio is 8 frames (1/3 of a second) out of sync with the picture. This is totally unacceptable to me and my client.
I am highly versed in ProTools and other video software but am brand new to flash. Ultimately I want my FLASH timeline to be in sync with my PT timeline. Thanks in advance for any help you can give.

Thank you for the ideas. I really want to import a WAV but I can't make FLASH CS5 import it. It says "One or more files were not imported because there was a problem reading them." My WAV file is readable by every other program just fine. I made an AIFF of exactly the same audio with the same export settings in PT and FLASH will import that except it changes the speed by .1432%
*Note: This is not an NTSC vs FLIM speed issue otherwise it would be eactly .1%. I am 100% confident my audio file from PT is at film speed and it does import correctly into other programs like Final Cut without speeding up.
I made an export from PT as an MP3 CBR and that audio file speed up even more. It was over 1/2 second off right from the beginning. I don't know how to use the Adobe Media Encoder or what an FLV file is but I am sure I could figure it out. In theory I shouldn't have to do that as FLASH should import audio without changing the speed for any given format.
Again my FLASH setting for the audio file is set to STREAM.
While we are talking about FLASH, I'd like to figure out how to change my timeline to black and white for a given range of frames in the middle of my animation. How do I set this up so the B&W effect affects all the layers in the stack for a given range of frames? I am very new to FLASH so you may have to give me exact steps on what to select and how to change it to a movie clip etc... if that is the way to do this.
Thanks,
David

BUG: Speed Change + Audio Transition = No Audio-Video Sync

BUG: Speed Change + Audio Transition = No Audio-Video Sync
If you change the speed of clips (125%) and make an audio transition between them (power), the audio runs out of sync. The longer the transition, the more out of sync.
alec

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Eddie
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Speed change cause audio out of sync?

you know the new feature of Premier is that you can change the speed with a line on the timaline, but with that, the audio does not change with it! how do i make the audio change with the video?

If you just change the static speed, the audio also changes speed. If you use the time remapping speed keyframes, it unlocks the audio; the audio does not change speed. If you are doing variable speed, it is common that the native audio track is not used.
Curt

Speed change for audio also?

When changing the speed of some video I cannot change the speed of the audio to keep the audio in sync with the video. Or is there a way to sync the audio with the video after the video has had a speed change? This has probably been discussed before but I can't find it.

Thank you for responding. It is very late now and I am just getting to your responses so I can't be sure but I will work on the project tomorrow. However, as I remember the audio and video are still linked and I have not unlinked them but I am only getting a speed change on the video. In your second response you mentioned making a speed change of the audio - I tried using the speed change tool on the audio but got nowhere - IF this is how you thought I should change the audio speed. I will get to the testing tomorrow about the linked audio and video to make sure they are still linked. Again, thanks for your response. This may seem like a lame question but I need help on some of the most simple problems.

Can't change audio speed on imported music

I have filmed a disco and am now editting it. The noise on the original music is too distorted, so am over-dubbing with original tracks from CD for personal use. Everything is fine, except for one or two tracks, where the DJ has speeded the originals up for mixing purposes.
So I import 'Like a Prayer' from iTunes and stick it in the timeline, but it's not in sync with people singing and dancing because it's slower than the version the DJ has played, When I try altering the speed of the audi (cmd J etc), it doesn't make any difference to the actual speed - the clip shortend (ie by half if I change the speed to 200%) but the actual music doesn't change in a BPM sense - the clip just plays later in the track. I often change the speed of audeio clips associated with video, so can't understand why this isn't working - I've tried to dot the same on various mp3 tracks I've imported and they all respond this way - i.e. the speed doesn't change. Any ideas?
Thanks

I think you should use .aif files, not .mp3.
If you import .mp3 music, first you have to render it, and then you cannot change its speed (even though the clip waveforms in the timeline make you believe it did).
With .aif everything should work as expected speed changes included.
Piero

Adobe Media Encoder CS4 Causing Jerky Playback with Speed Changes

Here is an Matrox AVI that was captured in Adobe Premiere Pro CS4. Watching the edited clip with a speed change of 600% looked fine when played in Premiere Pro CS4.
When I export the clip using Adobe Media Encoder CS4 as MPEG2 Blu-ray with a preset of 1440 x 1080i High Quality playback is very jerky. An export of the same clip with normal speed looks great??
Any suggestions would be greatly appreciated
Thanks
Type: Matrox AVI
File Size: 119.9 MB
Image Size: 1440 x 1080
Pixel Depth: 24
Frame Rate: 29.97
Source Audio Format: 48000 Hz - 16 bit - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00;00;36;27
Average Data Rate: 3.2 MB / second
Pixel Aspect Ratio: 1.3333
Codec Type: MPEG-2 IBP
Bit Depth: 8
Scan Mode: Interlaced - Upper Field First
Actual Image Size: 1440 x 1080
Here are the specs on my workstation
Case: Coolmaster-830
Op System: Vista Ultima 64 Bit
Edit Suite: Adobe Creative Suite 4 Production Premium Line Upgrade
Adobe Premiere Pro CS 4.0.1 update before installing RT.X2 Card and 4.0 tools
Performed updates on all Adobe Production Premium Products as of 03/09/2009
Matrox RTX2 4.0 Tools
Main Display: Dell 3007 30"
DVI Monitor: Dell 2408WFP 24"
MB: ASUS P5E3 Deluxe/WiFi-AP LGA 775 Intel X38
Display Card: SAPPHIRE Radeon HD 4870 512MB GDDR5 Toxic ver.
PS: Corsair|CMPSU-1000HX 1000W
CPU: INTEL Quad Core Q9650 3G
MEM: 2Gx4|Corsair TW3X4G1333C9DHXR DDR3 (8 Gigs Total)
1 Sys Drive: Seagate Barracuda 7200.11 500GB 7200 RPM 32MB
Cache SATA 3.0Gb/s
2 Raid 0: Seagate Barracuda 7200.11 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s Using Intel's integrared Raid Controller on MB

Have you ever upgraded Adobe Premiere Pro in the middle of a project?
By the way I captured the same clip in Adobe software only mode using HDV as a capture settings. The editing mode is Adobe HDV 1080i, 29.97 frames. The results are also jerky. When I render the clip captured it is also very grainy??
Type: MPEG Movie
File Size: 196.4 MB
Image Size: 1440 x 1080
Pixel Depth: 32
Frame Rate: 29.97
Source Audio Format: 48000 Hz - compressed - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Average Data Rate: 3.2 MB / second
Pixel Aspect Ratio: 1.3333
Thanks for responding so quickly!

How do You Make Accurate Speed Changes To Clips?

How do you apply a speed change to an audio clip in with frame accuracy? I have 2 audio clips, one from a camera and the other from a cheap solid-state recorder. The latter has audio drift and needs a one-off, constant adjustment to sync it with the camera audio.
However, FCP only wants to execute clip speed changes down to 1/10th of 1%, which is not small enough. Does anyone know what to do here - either within FCP or Sountrack Pro? Thanks.

I just know that often when capturing long segments of DV tape for our shows, we occasionally get a clip that comes in at 47.998 or 48.002, instead of the solid 48kHz.
When I export to aiff, it seems to clear up any sync drifting we experience with the original clips.
Might give it a go.
STPro is a solid option as others pointed out. I simply suggested a quick fix to a possible sync/drift issue. (quicker than learning a new interface...though that's something that should be done anyway, for the tools STPro offers).
K

Real time speed change mixing

Wondering if a way exists for me to make on the fly speed changes in real time while doing a voice over. Would like to just play a clip while recording my voice over and be able to freeze the clip while I continue to talk, then hit another key to start the clip moving at regular speed again all while I continue to talk. I don't even necessarily have to do the voice recording using FC. Just would like a way to do this which is a lot like real time audio mixing, but with speed changes. thanks.

The VO tool in FCP requires real-time sync to the playhead, so that won't work that way.
SnapZ allows you to record an image of the desktop, system audio (FCP playback), and the Mac's built-in input all to separate tracks of a QT file. I have used this for software instruction videos. There is a quirkiy issue with snapZ and frame rates. I posted a good workflow to address this a few months back. You would only need to do this if you were going to use the video recorded with SnapZ.
Hope this helps - -
Max Average

Compressor encoded speed change clip with echo as motorboat sound

Took me two days to troubleshoot, through trial and error and process of elimination, why Compressor encoded an audio clip that had been speed changed and echo applied to it -- as rapid MOTORBOAT sound! Project is a 5.1 mix. Since STP3 won’t accept speed change clips, after I completed mix in STP I placed speed changed clips on FCP timeline below the exported STP 5.1 mix with the FCP audio tracks for that clip assigned to channels 1 & 2 for the fronts and channels 5 & 6 for the rears. The clip on 5 & 6 was duplicated and identical in every way to the clip on channels 1 & 2. Only the dupe clip on 5 & 6 did Compressor encode as motorboat. The identical clip on 1 & 2 encoded correctly. Both clips were set to play at same time since I wanted the effect to be on fronts and rears simultaneously. I could not get the motorboat sound to play back from either FCP timeline or Compressor preview window. Only after encode and burn to DVD did it show up. Why would Compressor introduce such artifacts on one of the clips and not both – if it’s going to do it at all – which it shouldn’t? Any ideas? I have other such effects throughout the project where I duped a speed changed clip with an effect applied to it and set it to play on fronts and rears simultaneously and Compressor encoded those correctly.

Well, it's a little late, but this is one of the reasons to have your startup drive cloned so you can restore it to a working state if an update, upgrade or install sends things south.
https://discussions.apple.com/docs/DOC-2494
Have you tried resetting your fcp preferences
https://discussions.apple.com/docs/DOC-2491
If this doesn't fix the problem, you could try sending the shot to motion. You could aslo try changing the speed in the motion tab of the viewer.

Pasting Speed Change attribute to multiple clips

Since the FCP7 upgrade, I can no-longer paste speed changeattribute onto multiple-selected clips and have them ripple accordingly downthe timeline. I often have to match my video track time to the audio track timeand normally do the math to find what percentage the clips have to belengthened, change the speed on the opening clip, copy that clip, select theremaining clips, and paste the speed attribute to the selected clips. Before 7,they would change speed as well as length, now pasting the speed attribute onlychanges the speed and not the length of the selected clips, even when 'Ripple'is checked...
it's a serious time killer to have to do them one at a time...
This issues has been posted by atleast 2 other posters and hasnot received any replys. Pleasehelp us.
thanks

Sorry KV, I don't think you can do that anymore. Most folks really didn't like the old speed handling functionality pre FCP 7 and were seriously pleased when it was reinvented ... unfortunately "you can't please all the people all the time". Why not just nest the video track and then apply a single speed change to the whole nest?

Speed Change

Afternoon everyone -
Quick question; I am using the speed change dialogue (command + J) to do some speed changes to HD video in the timeline. I am slowing the same footage down in two different spots within a sequence. I slow it down to 50% in one spot and 5% in another. The speed change is working perfectly for the video but not for the audio. I would like the audio to play back at the adjusted speeds. The clip slowed down to 50% is working (both video and audio). The audio pitch is lower and in sync with the video (this is exactly what I want). When I play back the video slowed to 5% it is jacked up... real technical term I know. The video plays back at the right speed but the audio is clicking, skipping, and playing back nonsense. When I first made the adjustment the audio was playing perfectly in sync with the video and very much pitched down (this again is what I want). Now all it does is stutter and not even come close to what I think it should be doing. So... my question is, what am I doing wrong? Can FCP 7 play back audio slowed down with the speed change dialogue as slow as 5%? I could just fade the audio out at this point in the timeline but I would rather not. I am hoping someone might be able to help me figure out what I am doing wrong.
Thanks in advance for any help or advice.
Matt

Not easy for me to answer, all of my intricate speed changes have been in the olden days of silly ol'DV. But you have a folder called audio renders. You might try locating the file associated with this effect and deleting the audio render. that will force a re-render.
However, 5% may exceed the abilities of FCP's limited rendering engine to resolve the audio waveform. I don't know for sure and I'm not on my FCP machine to check for you and you haven't given us anything to go one except "HD," which does nto help much.
5% audio is unintelligible so this is an effect you can fake with some time and creativity. You'd find a suitably compatible sped range, might be 15% or less, that gives you a workable result. Exprt it, bring it back in as an auio-only movie, and slice it into your sequence.
It is the collective experience of many of the profiessional filmmakers here that the best effects–both visual, aural and emotional–are not always literal; they're implied, they encourage and allow the audience do the work.
bogiesan

Clip speed change.

Hi,
ive got a short sequence of clips ive put together and i want to slow down a couple of clips in the middle of the sequence.
The problem is, when i change the speed of the clip (it is on the top layer and no clips are in the same layer in front of it), the other clips that are on the bottom layers move forward, this causes me problems because all the clips are edited closely to the music.
Is there a way to prevent the clips from moving forward while i slow down the speed of the clip on the top layer?
Thanks

You could lock the other video and audio tracks while doing the speed change.
Eddie

Audio Speed change

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