Audio dropping upon export

Perhaps there is a relevant thread covering this topic...
Audio is dropping out upon export to QuickTime for iDVD..
This is a 41-minute production with lots of key frames. Can't figure out a pattern to what gets dropped, but two attempts have the same audio missing . . . and it's clearly on the FCE timeline (version 2.0.3).
The timelline, BTW, is composed of four sequences.
Any ideas?

Tom:
Thanks for responding.
Yes, I mixdown each nested sequence. Strangely, however, even after doing so one of the nested sequences -- when strung together -- indicated some unrendered areas. I then rendered again.
Also interesting that exporting the individual sequences directly works fine -- no dropped audio. This, I believe, will enable me to work around this problem by using sequential files in DVD Studio Pro 2, instead of iDVD. But that's a lot of work.
Appreciate any other ideas or thoughtful suggesions. Thanks very much.
TD

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Hi everyone,
I have an assembly cut of a feature, with footage and a timeline at 422 ProRes HQ, 24 fps, 96kHz audio.
When I try to export any length of a clip, I get exorbitant render times and hundreds of audio previews to render.
Video alone is rendered almost instantaneously.
There are some audio files on the timeline (music and SFX) at 48k sample rate.
Any ideas what the problem is?
Thanks.
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Thanks, Ann. I'm thinking that may be a factor because this is the first time I've had to work with audio recorded at 96 and I've never had this problem.
Can anyone else elaborate more?

Audio drops and cracks and odd sounds upon export...

working on CS4, on my mac powerbook.
upon exporting the audio has issues it doesn't in the project editing/CS4.
I've used crossfades, exponential fades to be specific... and even when I delete them, I have issues with clips I've never used them on.
the issue is the audio at the start of some of the clips drops low and then, after a second or two rises to the level it was set at.
I thought I was finished and only want to out put this cut to watch, make changes and be finished... I could really use some help on this... ugh.

well, I export it thru Premiere Pro CS4 and cs4 sends it to Adobe Media Encoder CS4.
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Audio drops when movie exported from iMovie into iDVD

Hi there,
I am a problem which I can't seem to fix.
I have created a 7 minute long slideshow in imovie with MP3 files from iTtunes embedded. The video and audio are fine when exported as a MOV file (and within iMovie itself). But when exported into iDVD for burning, the audio drops out completely after 3 and a half minutes.
I've tried updating iMovie, iDVD etc., deleting encoded assets as it says to do here: http://support.apple.com/kb/TA24043?viewlocale=en_US
to no avail.
Does anyone have any tips? My friend's wedding is on Saturday!
Thanks so much.
RR

Hi
A. I do not use "Share to iDVD" - BUT "Share to Media Browser" and as Large (not HD or other res.) - Works much better.
B. When did it hang ?
a. On Export from iMovie to iDVD
b. When DVD is played on DVD-Player
If last one - then
• What brand of DVD did You use (Yes it matters)
• What type of DVD
• Free Space on Start-Up hard disk - How much
• Burn speed - did You set down this - I do to x2 or x4
Yours Bengt W

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Hi all...
I'm new to this forum.
Is there an audio issue (drop-outs) with FCPX (ver 10.1.2) for 1920x1080 24p, 1080p HD & 2048x1240 24p (2k) - note: films in FCPX are in codec Apple ProRes 4444, Linear PCM?
Very recently I've been working on a show reel and I have imported a file (short film) to snip out a section to add to the show reel.
I set the project to the film's settings i.e.. "set based on first video clip"...(1920x1080 24p, 1080p HD). When I play the film in FCPX the audio "hic-cups"..."dips to silence"..."drops-out" briefly (up to 0.5 secs in duration) and very frequently all the way through (approx 15 mins long film)...note: audio set is at stereo 48kHz. The audio monitors on the right hand side also show the dip taking place (if it's a long enough drop-out).
I also have a version of the film in 2048x1240 24p at 2k, again Stereo 48kHz...and this does the same audio "drop-out" all the way through. I'm unsure what other formats will create this problem i.e. higher or lower aspect ratios than those above.
Is this a software and/or OS issue? Or a hardware issue? Or both!?
About This iMac details:
iMac 27 inch: OS X ver 10.9.4
Processor: 3.5 GHz Intel Core i7
Memory: 32 GB 1600 MHz DDR3
Graphics: NVIDIA GeForce GTX 780M 4096 MB
Fusion Drive 3.12 TB
Final Cut Pro X was bought & installed with this iMac back in Feb 2014
FCPX version: 10.1.2
Note also: I used Compressor (ver 4.1.2) to convert the files (movies) above to Apple ProRes 422 HQ, Linear PCM and the issue disappeared - the audio and visuals played with no problems. All films play with no issue when opened in QT player. They are also fine when exporting from FCPX. The issue only occurs (as far as I can tell) within FCPX when editing or playing the audio there.
Has anyone encountered this problem?
Kind Regards,
Hakan

Hi Luis,
Thank you for that.
Seems like you have a point about the "hardware" issue. I'm unsure (new to it all) at what data rate my (er...wonderful) fusion drive provides FCPX for smooth playback - or where I can find that info on the iMac. Playing back movies in the 422 HQ codec seems to have no issues (when I converted the movie from 4444 HQ).
But playing the full 4444 HQ, the picture is smooth, but the audio has these drop-outs - even with "best performance" option ticked. Interesting that the audio suffers, not the picture in FCPX - so not sure what's going on there. I also read - perhaps - that to play a smooth ProRes 4444 HQ movie in FCPX the data rate should be min of 500 Mbs (based upon About Apple ProRes) for HD movies and up (i.e. 2k). ProRes 422 HQ needs a data rate of 220 Mbs - so that is my upper-limit to smooth video&audio playback with the current system I have, I guess.
Does anyone recommend a fast USB3 or Thunderbolt drive (500Mbs+) where I am able to run 4444HQ movies with no issues to picture or sound (away from the fusion drive)?
KR
H.

Audio Drops Out at End of Imported Clips

Hi, Guys,
I have read everything and tried everything, but I can't find a solution to something which seems like it should be obvious:
I am in the process of uploading some TV programs to YouTube. I am using iMovie '11 to cut them into chunks of less than 15 minutes each. When I import the material into iMovie from a file, iMovie automatically breaks the source material into ~5 minute clips. For some reason, the sound for the last half-second or so at the end of each clip is automatically muted by the import process. Needless to say when I cut the clips back together in an attempt to recreate the video stream as it originally was, there is a half-second of audio drop-out marking the spot where the clips are welded together.
How can I get this to stop???
I notice that the advertising makes a big point of 'iMovie HD' allowing the user to adjust the length of the clips that it cuts source material into during import. Please tell me this is not a work-around for this problem 10 years after-the-fact!
Thank you.

I used to have a saying which I applied to John Cage's compositions:
"He's got nothing to say, and he's saying it. And that's BS."
Faceless capricious corporate censorship is good HOW?
As regards iMovie '11 muting a short bit of audio from the ends of clips, it turns out to be the beginnings of the clips:
My prior post uncovered a very different problem in my process. (At the time, a virtually non-existent process!)
Now I have learned my up the learning curve to the point where I am beginning to actually use some of the functionality in iMovie '11. Unfortunately my original observation of "a bit of sound" (50 to 100 milliseconds) disappearing between clips is still a problem. Here are 3 minimalist examples in the form of short test vids: {Just click "Play all". Titles projected over the vid list what you are hearing. The "about box" (YouTube "Description:" field) contains even more detail.}
http://www.youtube.com/viewplaylist?p=7E219251FC3C5FEC
I can now characterize this problem in more detail than I could previously:
The first 50 - 100 milliseconds of sound are squelched in the beginning of a clip when it is uploaded to YouTube from iMovie. This is NOT a YouTube transcoder issue. Reloading multiple copies of the same clip into iMovie yield the same result there: Dead sound between clips.
This demonstrates that iMovie chops the first ~50 milliseconds of audio off of the beginning of a vid when it "shares" (exports) it. Apparently the missing audio in some way becomes an "attribute"of the clip (like a crossfade transition that you can't remove from the beginning!), because attempts to trim the squelched audio off of the beginning of the clip meet with failure; the "bad leading edge" stays with the clip, even after the apparently offending segment has intentionally been discarded.
I checked the audio gaps with Audition, and, while I was guessing 50 - 100 ms, it turns out to be exactly 52 milliseconds of audio is squelched at the beginning of a clip. (I tried to display the image of the spectral & time-domain response here, but I can't figure out how to upload TIFFs into this forum.)
I am sure this must be the result of some simple default setting in iMovie which automatically adds a "style" or something to my vid clips upon export, but I have tried everything I can find, and, if it is, I haven't managed to reliably turn if off yet.
N.B. if I remain inside an iMovie editing session, and paste pieces together into clips without exporting the clip, or interrupting the session (as I did to produce the test vids), everything is fine. But as soon as I save a clip, the first 52 ms of audio seems to irrecoverably disappear. That continues to hold true no matter which frame in the clip subsequently becomes the new beginning.
Please forgive my iMovie newbie ignorance, but: How do I get it to STOP???
Thank you.

Audio dropping out during playback in timeline

Hey everyone,
I've dug through these forums and unless I just completely overlooked it I have not found a solution to this issue. I've listed my setup below and then have stated the issue I'm experiencing.
27-inch, Mid 2011 iMac
3.4 GHz Intel Core i7
16GB 1333 MHz DDR3
AMD Radeon HD 6970 1024MB
Running Mac OS X Lion 10.7.5 (11G63)
Currently working off of a portable 1TB G-Technology G-DRIVE via FW800.
Working in Premiere Pro CS6 Version 6.0.2
Editing in a sequence with settings:
1920 x 1080 23.976fps (also tried in a 29.97fps timeline with same issue)
Working with footage that is 23.98fps
Working with a combination of ProRes 422 (LT) and native H.264 Quicktime files strait from a 5D Mark 3.
The issue I'm having is during playback the audio will competely drop out. The video will continue playing on just fine but the audio drops completely out. All audio levels drop as well in the audio mixer meters so it truly is losing all communication with my audio layers in the timeline.
I read in other forums to go into Finder and delete out the .caf files, re open Premiere Pro, wait for them to be recreated then carry on. I tried this approach with no luck. Deleting the .caf did not change anything. Audio is still dropping out as I try to play through my timeline. The only way to get the audio back is to pause then press play again. I have 5 total channels of audio with only 2 of those channel active.
Any ideas on what is happening would be greatly appreciated. This is incredibly frustrating have to export out a video just to be able to watch it through.

Having this annoying problem also. Using the Space Bar to play timeline it takes pressing and holding to a count of three or trying press play three time in a row using the space bar to get ungarbled audio, or any audio at all in a normal uncomplicated sequence on the timeline.
Really annoying. Audio used to be so simple and untaxing to a sequence.
Adobe Premiere Pro CC 2014.1 release
8.1.0(81) Build
OSX 10.8.4
40 GB RAM
G Raid G Speed Q w/ ESATA connection
1920x1080 29.97 Progressive Scan Sequence
48Khz
Apple PRoRes 422
12 channels of audio/ only 2 of 12 monitored.
1/2 resolution on Program monitor
ADOBE.....WISH THERE WAS A SOLUTION?

Audio drops out when following video to external monitor

When I play a sequence to an external monitor, the audio drops out for 2 to 3 seconds after changes on the video track, and then pops back in with no interuption in video output. It doesn't happen at every cut, but it's consistent in the places it does. I thought it might be caused by the size the project has become. So I exported the sequence as a quicktime file, closed the lage project, opened a new one and exported the new file and played it and it happened again, even though there were no edits. It doesn't occur at all when I turn off external video, and play it on the computer. I connected a new firewire from the computer to my DV deck, restarted the computer, but it keeps happening.
Is it that the dramatic change in color, light and compostion crowding out the audios ability to follow the video through the wire?
I'm completely stumped. The next step will be to open the computer and try to blow any excess dust out. I do this periodically anyway, and my last time was two months ago, so I'd be surprised if it works.
Maybe the G4 with 2G processing power can no longer handle the program, but it shows no sign of stuggle in any other way.
My clients are starting to grow restless.

Thank you so much X & Paul, for your suggestions. Although they didn't solve the problem, they kept me hopeful enough to continue my quest for an answer. After exhausting all effort to find the problem in the audio, I decided to focus on the video. So, I tried correcting the excess luma on the consolidated QT movie, and suddenly the problem was fixed. Because of the different levels of correction I'd need for each and every cut in the original sequence, and the precious time it would take, I'd planned to save it for the color correction stage, a mere 2 weeks away. I remembered how illegal white would often cause the image on some monitors, specifically consumer TVs, to waver for a second. But this was happening all the way back to the DV deck's audio meter, so I never expected it to be a luma issue.
I assume that the outdating capacity of my G4 played a part, but I wanted to write back with my thanks, and to impart my illuminated wisdom to the next perplexed soul.
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jesterhead

Audio dropout when exporting from Final Cut Pro X

My video looks fine on the timeline, but when I try to export the audio drops out at the first edit. Anyone know why? I haven't had this problem on the previous videos I've cut on FCPX, and I haven't changed the settings on either importing or exporting, so I'm totally confused and frustrated!
Thanks!

Luckily I wasn't risking days of work.
Our in-laws were coming round yesterday and I suddenly remembered that I had promised them DVDs of our grandson.
So I desperately started editing a couple of hours before they were due and of course one problem after another cropped up, partly caused by one of the videos being shot on an AVCHD camera I had bought a fortnight ago together with one on my old HDV camera.
Anyway they went away with the DVDs albeit the AVCHD shot one had no dissolves!

Prevent audio drop at chapter 99

How do I prevent the skipping , or audio drop in a slidshow, at the point where Chapter 99 slide transitions to the next slide or Chapter 1,
which only occurs during DVD disc burn. It does not appear in the preview in I photo, or the preview in IDVD.
Thank you

There are many ways to produce slide shows using iPhoto, iMovie or iDVD and some limit the number of photos you can use (iDVD has a 99 chapter (slide) limitation).
If what you want is what I want, namely to be able to use high resolution photos (even 300 dpi tiff files), to pan and zoom individual photos, use a variety of transitions, to add and edit music or commentary, place text exactly where you want it, and to end up with a DVD that looks good on both your Mac and a TV - in other words end up with and end result that does not look like an old fashioned slide show from a projector - you may be interested in how I do it. You don't have to do it my way, but the following may be food for thought!
Firstly you need proper software to assemble the photos, decide on the duration of each, the transitions you want to use, and how to pan and zoom individual photos where required, and add proper titles. For this I use Photo to Movie. You can read about what it can do on their website:
http://www.lqgraphics.com/software/phototomovie.php
(Other users here use the alternative FotoMagico: http://www.boinx.com/fotomagico/homevspro/ which you may prefer - I have no experience with it.)
Neither of these are freeware, but are worth the investment if you are going to do a lot of slide shows. Read about them in detail, then decide which one you feel is best suited to your needs.
Once you have timed and arranged and manipulated the photos to your liking in Photo to Movie, it exports the file to iMovie 6 as a DV stream. You can add music in Photo to Movie, but I prefer doing this in iMovie where it is easier to edit. You can now further edit the slide show in iMovie just as you would a movie, including adding other video clips, then send it to iDVD 7, or Toast, for burning.
You will be pleasantly surprised at how professional the results can be!
To simply create a slide show in iDVD 7 onwards from images in iPhoto or stored in other places on your hard disk or a connected server, look here:
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Audio problems when exporting

Hi there.
I'm having trouble exporting my video file. The resulting .mp4 has audio that is screeching. See video below, password 'audio55'.
Private Video on Vimeo
The problem arose when I updated from Leopard to Yosemite on my imac. The audio was messed up upon export whether I used CS5 or CC. So I used Time Machine to jump back to a date before I upgraded to Yosemite and now I'm exporting from CS5 again, using OS X 10.6.8 (Leopard) and the same issue still happens, as shown in the video.
I have been using this footage (AVCHD) with the same sequence settings for years. There is one error that pops up before I open the project, that the Scratch disks are write protected or unavailable and that they need to be set to my documents folder, which I 'ok'.
Please help!
Thanks,
David

Hi there
I've seen others report that it's helpful to adjust the audio so that each slide doesn't begin playing audio until .2 or .3 seconds into the slide.
Perhaps try that and see how you fare.
Cheers... Rick
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Preview Files Suddenly Go Missing, Render Entire Work Area Crashes Premiere, Audio Drops Out

I opened a Premiere Pro project I was working on earlier today and it said it couldn't find the preview files, searching my system found that the files didn't exist.
Rendering my entire work area brings up the "render window" but nothing happens, if I press cancel Premiere freezes.
Started getting a strange situation error ( 26 ::139 ) in After Effects at the same time that Premiere lost the preview files and the crashes started happening. It disallows me from editing any dynamically linked projects. In Premiere the DL's just show up as "Media Pending" clips indefinitely. Importing the compositions in AE into a new project didn't fix the issue either.
The three problems above started happening all at the same time, was working through a color grade using Red Giant software when it started happening.
Also audio drops out on playback randomly in Premiere Pro, tried various audio drivers and hardware, none entirely eliminate this problem. Sometimes the audio will cut out and "burst in" distorted very loudly, which is disturbing, even when my work area is rendered. This problem has been around since I started using PP CC.
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Hi Arjun, thank you for your help.
Though that didn't work either. At least the timeline will playback but as soon as I try to render my work region or export any video Premiere freezes.
I removed all dynamic linked files as well, that didn't seem to change anything.
Something I noticed -- the render bar on the timeline that is usually yellow for edited clips that have no FX on them is all red, nothing is yellow (or green). This is a 4 minute long edit on a music video, nothing extraordinary.
I tried creating a new project and dragging a few clips in and editing them, everything went normally and I could render and export the clips. Just any rendering done on any version of this music video edit I'm working on crashes the program.
Also recently had a problem where I opened the music video project and the song that I imported (.mp3) all of a sudden has no waveform or sound coming from it. Dragging it back into the project doesn't fix it either. Workaround was using a .wav copy of the song.
Zach

Preview in iDVD fine, audio drops off in data image or burned DVDs

Playback in Final Cut HD Express and iDVD preview works perfectly. I create a DVD image and the audio drops out the last minute of a 39 min program. The movie file source in iDVD is DV/DVC Pro. I did a Quicktime conversion from Final Cut using High Quality H.264 and the audio remained but the quality was awful. I did a program info in iDVD and the DV movie did not eat up too much space in iDVD so that's not an issue. I have 28 avail. GB in my external drive where the project is located so not an issue.
I have 23 GB left in my internal drive so that wouldn't be an issue either.
The Apple Store techs were stumped.
The audio that goes missing in the data image and a DVD I burned was a fade out done on Final Cut. There is a blue line on the timeline, but if that was an issue then it wouldn't play back in iDVD. It DOES play back perfectly in iDVD. Somewhere in the conversion from iDVD and a data image or DVD messes with that audio. Any hints?

No definite suggestions, except for things to try (might they count as hints?):
Before exporting from FCE, did you mix down the audio? (Sequence>Render Only>Mixdown).
Did you export a reference movie, or a self-contained movie? Whatever you did, you might try the other.
What versions of FCE, QuickTime, iDVD? Some recent QT updates have caused strange things to happen in older versions of FCE.

Audio drop outs and continuing problems- Apple Support informed again.

Hi All,
Have had various audio problems with iMovie transfer to iDVD 6. iMovie had the problems initially but a weird trick seems to be helping me.
Copy a random new audio track into my film, paste it, then cut it out then empty trash..... all of a sudden my audio is clean again and perfectly in time with the video. I have informed the iMovies people in Ireland and they are at a loss to explain why this is now ok.
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When I try to export this project from iMovie in iDVD 6 it either becomes an audio garbled nightmare or if I try and import into iDVD 6 I get audio that gradually becomes out of sync with the video visual. I know that this project was recorded in 16 bit audio so no joy there.
I've told Apple in Ireland that there are major audio issues with iDVD 6's audio set up + something they were apparently unaware of. I was assured that the tech dept's would investigate and solve. I am really surprised that they hadn't seen this problem in this forum!!
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GUY

SAME EXACT THING HERE. This is what I posted in a diff thread:
2013 iMac 1TB Flash Drive
OS 10.8.5
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Video playback slow and audio drop out after render

Hi
I have downloaded a trial version of After Effects from the cc,
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This happens with AVI or Quicktime files.
Using a Intel i5 quad core, 8 gig of ram 250 gig ssd.laptop
Render/export in Premire pro is fine.
Can any one help.
Regards Phil Green
Blue Room Media.

It sounds like you might be hitting the space bar in hopes of getting real time playback. Sorry, but AE doesn't work like that, because it does totally different things from an editing application like Premiere.
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Getting started with After Effects (CS4, CS5, CS5.5, CS6, & CC) | After Effects region of interest

Audio dropping upon export

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