Speeding up Audio

Is there a way to speed up audio. Not the time and pitch machine, I want the pitch shift that comes from playing the audio faster.
I'd rather not use the time and pitch machine as the quality is lost in reprocessing. All i want to do is resize a sample so it plays faster or slower.

Unlike with analogue tape, digital audio is broken up into samples which are played at a particular rate. So when you make an audio file play back faster, the samples in that file have to be matched to the rate which you have told Logic to play back at (in your Project settings). IOW, there are two rates; the rate the file was originally recorded at, & the rate Logic uses. Matching these is normally trivial, because they will be the same. If you ask the file to play faster or slower, the two will no longer match & compromises must be made — so you will always 'lose quality'. Some, anyway. But not so as you would notice…
However, you can allow pitch to follow speed in Time Machine, if you choose that option!

Similar Messages

Can you somehow speed up audio recognition of a newly imported file?

When I import a new big file, it can take several minutes even on my very powerful computer for Pr to "read" it sound-wise. I can jump around freely in the video, but without the sound, it often makes it hard to make cuts before it is finished. It would be nice if Pr knew where I was in the timeline of the video and "discovered" audio "nearby" instead of going from start to finish in a linear fashion.

Can you somehow speed up
audio recognition of a newly imported file?
Nope.

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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Stop tempo changing speed of audio

So Logic X seems to by default change the speed of audio when you change the tempo. How can you stop this from happening if you don't want it to?

Uncheck Follow Tempo in the Inspector.
http://help.apple.com/logicpro/mac/10/#lgcpef37cd28

Beat Mapping is changing speed of audio region, not the metronome!!!

Hi Everyone,
I just today learned about beat mapping in Logic. I used it on one song that i'd recorded previously without a click track and it worked like a charm. I'm trying to use it on a different song now (same situation: previously recorded with no click) but for some reason with this song, it's changing the speed/length of my audio region to match the metronome instead of changing the speed of the metronome to match the speed of the audio. What's going on?!
Thanks a bunch.
David
MacBook Mac OS X (10.4.9) 2.0 GHz Processor, 2 GB RAM

Well after many hours of searching through Logic Forums and flipping through the Logic Reference Manual, all to no avail, I've finally figured out what the problem was. I needed to uncheck the "Follow Te(mpo)" option in the Region Parameter Box for the region I was trying to beat map. The beat mapping process wasn't actually changing the length/speed of my audio region like I said it was in my initial post; it was simply playing over it slower or faster in order to preserve the audio-to-tempo ratio as I made the tempo slower or faster. All I needed to do was uncheck that little box and now beat mapping works exactly as described in the Reference Manual. WHY ON EARTH is the "Follow Te(mpo)" box not mentioned when discussing beat mapping?! More importantly, why is it not mentioned ANYWHERE in the entire Reference Manual?!?!? NOT ONCE!!! unbelievably frustrating.
MacBook Mac OS X (10.4.9) 2.0 GHz Processor, 2 GB RAM

Speed adjustment/audio?

This should be another easy one.
Whenever I select a clip to edit and change the speed from anything other than 100% (normal) the speed changes but the audio goes away.
I want to speed up or slow motion the clip but I want to keep the audio as well.
What minor step am I overlooking?
Thank You
Dan

AppleMan
They say that people do their best thinking while lying in bed waiting to fall asleep...or while laying there in the morning. That's what happened to me, my friend.
Here is what came to my mind. Awhile back I was talking to an Apple rep and when we (actually he) could not get to the bottom of an issue here is what he had me do to my Mac.
1. Create a new User account if you only have one account.
2. Close any open applications on your dock.
3. Reboot your Mac.
4. Log in under your new User name.
4. Open iMovie and (because there will be no data there) go to Photo Booth and shoot yourself for about 10 seconds.
5. Use this new project as your edit for a new movie.
6. Change the speed of your clip as you tried to do in your original User account and play it at 50% 100% or 150% (whatever).
*7. You will find that everything plays as it should. And it does!*
8. Reboot you Mac and log back in under your original User name.
9. Open iMovie and select a clip and change the speed and see if you NOW can here the audio as well as view the speed change.
*10. Jackpot.....AppleMan.*
Ok, that was while I was asleep, but I never would have learned how to find the codec and/or the other stuff if it wasn't for you.
Best Regards Always
Dan

Speed/Duration Audio Issues

Disclamer: I am not PC - I use the word "Native" meaning orginal, NOT to be confused with Indian.
Situation:
I have a 15 min video clip that I sped up to 115%. The new duration is now 13min. On the timeline I right click to select the "Speed/Durration" option and increase my video clip speed to 115% of native speed 100%. I select the "Maintain Audio Pitch" and "Ripple Edit, Shifting Trailling clips".
Select Okay and Premiere Pro CC does a great job of speeding up the clip and the audio.
However, the audio doesn't shound normal and clean like the native audio clip does. Faster, yes but not clean.
Example 2 of what I'm trying to acheeve: At the end of a raido/tv commercial there is a soundbite of disclamers that speeks very fast. like speed talking?
it's almost like the audio has been sped up 200 of native.
Question and Goal:
My goal is to create the same audio clarity at 115% as to the native audio.
Q: How? How do the PRO's do it?
Greatly appreciated folks.
I can be contacted by emial at [email protected]
Thank you.

Lovebug1018 wrote:
I also had this problem and it seems that by doing a factory data reset (once the upgrade is installed), they work again. I also contacted my local Verizon store and they didn't even realize it was a problem.
Just make sure you back everything up with your preferred method and then after the factory reset, re-sync your phone.
Hopefully this will also solve your problem.
Maybe I'm dumb, I've done a bit with my Droid Eris, but I have no clue how to back up the phone (especially my apps, god forbid I would have to re-download all of those) I'm sure my phone could use a hard reset, I seem to have a problem that my phone randomly turns its sounds off, i.e.. no sound when phone rings, can't hear peoples voice and vice-versa. The only way I've been able to solve that problem as of yet is just to power off and back on again.
My phone needs the help of Jesus himself! Or just someone who knows what their doing a little better than myself.

Controlling Speed of audio and video playback ?

Hi!
I would like to know if there is (or will be) a way with
upcoming Flash CS4 or even with Adobe Flash Player 10 capabilities
(or even with Adobe Pixel Bender) to control the speed of an audio
or video playback.
For example being able to play some sound slower or faster
and even adjusting audio pitch (and other audio filtering).
It's been a while that I've been looking for this (back to
Flash Player 6 when Flash was part of Macromedia) and with all
progress achieved since then I hope there is some accelerate and
decelerate feature now.
Please let me know about it.

More information needed for someone to help... click these links and provide the requested information
-http://forums.adobe.com/message/4200840
-http://forums.adobe.com/thread/416679
-http://forums.adobe.com/thread/419406
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30
For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/
http://blogs.adobe.com/premiereprotraining/2011/02/red-yellow-and-green-render-bars.html
If you have a red line over the timeline after importing a video and before adding any effects... your project is wrong for your video... read above about codecs
Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project
Also, H.264 will NOT work inside an AVI wrapper http://forums.adobe.com/thread/854115

Uploaded video plays at twice normal speed, but audio plays normally

I am able to upload video from Panasonic Lumix camera to iMovie08, but video plays back at twice normal speed. Meanwhile, audio plays back at normal speed. I posted a video on iTunes just to see if the problem remained and it does. How do I fix this so video plays at normal speed?

Like I say, there are two 24 modes on that camera. Is your sequence set up for 24fps or 29.97? Whichever one it is, try the other and see if it makes a difference.
What were your capture settings? You need to clarify that you've captured correctly (I'm not sure whether it's possible to capture 24fps material incorrectly as I've never tried).
The basic thing you need to do is determine whether you shot native 24 or 24 converted in camera to 30, and work forward from there.
You might find more experts on your camera and its settings over at [www.dvinfo.net]

Speeding up audio on timeline ends up cutting off a chunk at the end. Help?

Hello all. I'm trying to shorten an audio file on my timeline by speeding it up, but when I do FCP ends up cutting off a good number of seconds from the end. Any suggestions?

Well, speeding up an audio file naturally makes it shorter. A far better way to shorten an audio file (assuming it's not synced to the video) is to just razor blade it at the end and fade it out by keyframing the levels or adding a long audio dissolve. Or by editing it so that it does fit.
Any use?

Quicktime playing back speed, and audio sync

Hello,
I'm trying to use QTPro instead of iMovie to digitize ntsc video because it produces a single DV file instead of multiple files in iMovie. This saves the rendering process in iMovie. These files need to be a single video file and are used in a chase computer for audio post work. Typical program lengths are between 1 and 3 hours, sometimes more.
When playing the files back in QT the audio progressively drifts even though the firewire box has a switch for "locked audio" that supposedly deals with long DV audio drift.
Another problem that may be related, but certainly can't be good for post work, is that the Movie Info window shows a movie rate of 29.97, correct, but a playing rate of 30. I can't figure out how to get that to play at 29.97.
One last question - the QT record settings have different resolutions (640xxx?) than the native DV resolution of 720xxx, and seem to have a slightly different pixel aspect ratio as well.
Any ideas about these issues? It's messed up my workflow for now, as the iMovie solution has an extra step that takes up double the disk space and extra time.
Digitizing box is a Canopus ADVC-100 with an external 3.5" firewire drive for video, no other apps running at the same time.
Thanks
H
G4-17 Powerbook Mac OS X (10.4.6)

I'm definitely at 48k/16b, with locked audio on the Canopus.
Sounds like you've got it covered, then. Not sure what else would be causing the A/V drift then, assuming "lock" circuit is functioning properly.
I watched the playing rate and it's mostly at 30 with an occasional dip to 29.75, possibly averaging to 29.97. Hopefully it's correctly playing 29.97
Your upper and lower observed excursions exactly match my own.
The older projects were indeed done with an early version of iMovie and would segment at just under 10 minutes - the 2G limit.
Correct. On mine the "just under" 2 GB limit equated to 9'11" for the first break and 9'8" for each additional. Not sure how exact this carryover is between machines and external drives.
I did a test today using my current version, iMovie HD 5, and it segmented a 2h10min program at just over 1hour per segment. Do you happen to know if the newest iMovie corrects this?
Am wondering if this test is repeatable and/or consistent between capture of different material. Have noted two instances that seem to cause segmentation and/or total termination of capture. One is a "weak" drive sector that passes read/write tests (i.e. test usually done with multiple but limited re-write attempts) but drops a frame during actual capture and trips termination on my older G4 laptop (using older version of iMovie with preference set to do this). As to current iMovie version (v6.02), would assume this could happen if "automatic scene detection" is turned on and a dropped frame is detected. In addition, if this option is turned on, a "time limit" for capture can then be specified. Can't remember if these preference options were included in previous versions of iMovie. You may want to check on this possibility.
I can certainly try the Vidi app you mentioned.
Application is a basic, dedicated, "no frills" utility with fewer "platform limitations" (it works on older platforms/OS) than iMovie. I find it very handy for mobile capture using my old laptop. Here is the VersionTracker link if interested:
http://www.versiontracker.com/dyn/moreinfo/macosx/18234&page=2
After updating various things I tried using QTPro recording as a test, and after about 1h50min it crashed, leaving the file unfinished and useless. Is there a reputation with QTPro recording? Is it rumored to be unstable? I'm a bit nervous using it now. I keep my systems streamlined for audio post, so I doubt it's a conflict.
Tend to consider it "an afterthought" added to the latest version of QT and as such, a "work still in progress." Frame rates have greatly improved with the last few updates but, like you, I still consider it more of a novelty at this time -- handy for some usese but not something I would trust for precision work.
I solved that by showing package contents of the iMovie project and removing the media clip, a dv file.
I certainly see no problem with this approach if all you want is access to the "raw" material in a file format and especially if you keep it on the same drive. (I.e., all your are doing here is changing the VTOC pointers to the data and not actually copying and/or moving any vast amounts of data, not to mention, it additionally saves drive space.) Basically, the export/copy approach means re-writing vast amounts of data which is directly related to speed of your external drive, CPU and the speed of your target drive. For some purposes, the creation of a reference file may be handy. But even here, you are usually just postponing an inevitable time delay somewhere else in your work flow.

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

Variable speed on Audio and Video

I want to do a variable speed ramp using video and audio, but when I use the graph it only applies variable speed to the video ( it does constant speed fine to both)
Any help ? Thanks
Deyson

I see other people have this problem but I can't find the solution. It's occasional buzzes on the speakers when I'm watching a video. The mouse momentarily freezes--fraction of a second--and the video jumps. Sometimes the busses are pretty quick and have a slightly different tone.
Any help?
Robert

Problematic reverse speed in Audio Subclips

I am trying to create some room tone loops.
I take a portion of an audio subclip into the timeline and 100% speed-reverse it. The resulting clip does not have the same In and Out points that I have given to the subclip but (arbitrarily?) takes a different In and Out point from the original Master Clip and renders it in reverse. (The duration remains the same).
This does not happen if I use a portion of an Audio Master Clip in the first place, instead of using a portion of an Audio subclip.
Is this a conflict that occurs in FCP 5.0.4? Is it some kind of system or user setting?
Of course I could remove the Audio Subclip limits and work with Master Clips, but I am at the end of a project that has been fully logged in subclips and multiclips...
Any answer is quite valuable, since I am editing twenty-three hours of footage with numerous changes in room tones and speech...
Dual 2 GHz Power PC G5 Mac OS X (10.4.4) FCP 5.0.4, 2.5GB DDR SD RAM, 560GB Hardisk space

Thanks, Patrick!
That's a way to work around it!
Yet, I am trying to figure out a problem-free way of logging that does not have to go through such changes until I finish a large project. I decide about the workflow in the beginning, but I have to change it when it comes to audio subclips and multiclip marking, and this full-of-surprises process is time-consuming and stressful.
Do you know if this is the usual case with FCP's audio subclips, even with the latest upgrade? Or is it just a problem in my system, which I should try to fix?
Mac OS X (10.4.4)

Speeding up audio/video

So I recorded a screen recording that has audio and video and I would like to speed it up, but the audio only trims when I try.
Selecting the clip and doing cmd+j and entering 400 (the % speed I want) makes the video speed up, but leaves the audio out of sync and trimmed (not sped up at all)
Unlinking the clips and doing cmd+j tells me a conflict occured in the trim operation, if I move the clip away and try again it trims it, but does not speed it up.
Thanks to anyone that can help.
- Zahzi

See if this helps:
https://discussions.apple.com/message/1062011#1062011
Also check when you make a speed adjustment that it will not impact on another track or clips in the Timeline.
This is the usual reason for the "conflict occurred" warning.
Al

Speeding up Audio

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