Quicktime export = choppy audio first 5 to 10 seconds

When I export a composition to a Quicktime movie file using the default settings, I get a file that has choppy audio for the first 5 to 10 seconds and then it smooths out and plays just fine.
However, when I shift everything forward on the timeline by 10 seconds and then export the composition, the audio plays just fine once the movie starts playing.
It seems like up to the first 10 seconds of the audio get corrupted on an export. I've tried all different combinations of Quicktime export settings and get the same results. I'm pretty sure it doesn't have anything to do with the audio file itself; I'm only using high-quality .wav files.
Details:
After Effects v8.0.2.27
QuickTime Pro 7.4.1
Windows XP SP2
Core 2 Duo, 2GB RAM
Any ideas?
Thanks,

OK, tried the suggestion from Jonas on avoiding 'Export' and used the render queue instead and... Viola! Worked like a charm.
I went back and scrutinized the differences between the two and found the problem; the export settings were set to 44.1khz for the audio vs. the 48k for my render queue setting. I changed the audio to 48khz for the export settings, tried it again, and this time the problem was gone.
Thanks again for the tips and ultimate solution.

Similar Messages

Quicktime export with Audio ?

Using Keynote '08, when I export a Keynote presentation with Recorded Timing using Quicktime for export, there is none of the audio that I recorded. Has this been fixed in Keynote '09, or do I still have to use some kind of workaround?

For clarity's sake -----
I got the EXPORT with Audio to Quicktime part to work, using the DEMO of Keynote '09.
But I was NOT able to get Keynote '09 to RECORD the Audio.
When I tried to do an animation with Recorded Timing using Keynote '09, here's what happened.
I set up a small animation with a move.
Hit the RECORD button.
Spoke over the top of the animation.
It looked like it was recording.
The red light was on and the little meter was working.
But after finishing, when I went back to the Audio section in the Inspector,
there was no Slideshow Recording listed.
In other words - the recording did not take.
So I had to do my ANIMATION & AUDIO RECORDING using Keynote '08.
And then open that file using Keynote '09.
Then EXPORT using Quicktime.
That worked.
Go figure.
I'm using ---
PowerBook 1GHz with 512 MB Ram & 64 MB VRam
OS X 10.5.6
Quicktime Player 7.5.5

HELP!---Quicktime Export Loosing Audio

Thanks for reading this.
I have a quicktime that I downloaded. It's called Batman Dead End. Perhaps you've seen it. Well I saved it from the site and now want to bring it into after effects so that I can crop out the black bars, so I can save it as an MPEG4 file and copy it to my PSP.
My problem is when I try to import into after effects, I get an error. AE doesn't like the compression codec or something. However this isn't my Quicktime Problem...
My problem is that I can't export the Quicktime file using QTP 7.0.2, with AUDIO. Video is not a problem. I tried many different codecs, but I am never presented with the option to export my audio. When I save the file in whatever codec, I loose the audio.
These are the codecs I've tried:
MPG4
MPG4 (ISMA)
MPG4 H.264
QUICKTIME MOVIE
AVI
Here's one thing... I tried DV. It gave me the audio option and the video exported nicely out as a .DV file. However I am sure I won't always have such nice big video to export without it looking like crap. If I am downloading a movie trailer (as I like to do) then I will have a problem saving those files as .DV.
Can you guys & gals help?

What's the format of the original clip? If it's MPEG-1 or MPEG-2, you've run up against a limitation WRT QT & muxed audio tracks in those formats.
You'll need to use MPEG Streamclip to demux/transcode into another format.
(-:

Quicktime exports without audio

Movies from my camera play fine with audio on quicktime and youo tube but when I export to create file for my iphone, the options page says no audio file and exported movie has no audio. Help anyone?

QuickTime can view MPEG-1 formats but can't extract audio of muxed files during export.
Use MPEG Streamclip (free).

QuickTime Export Boosts Audio Level

Hi folks,
I'm working on a DV-NTSC project in which I have received a fully maximized audio track
that I put in the timeline without any processing. I am now exporting the movie
using QuickTime - Current Settings.
The resulting movie should have the AIFF audio exactly the same as the original mix,
but it's consistently hotter. Since the mix is already maximized, that means I get clipping.
I found that when I export using separate tracks the volume is exactly the same.
Has anyone else experienced this sort of thing?

OK, tried the suggestion from Jonas on avoiding 'Export' and used the render queue instead and... Viola! Worked like a charm.
I went back and scrutinized the differences between the two and found the problem; the export settings were set to 44.1khz for the audio vs. the 48k for my render queue setting. I changed the audio to 48khz for the export settings, tried it again, and this time the problem was gone.
Thanks again for the tips and ultimate solution.

Imovie exported to mp4 choppy audio on PC QuickTime player

When I created a mp4 file from imovie, my client with a PC who has a QuickTime player hears choppy audio. It won't even open in his Windows Media Player bc of Codec issues. Then QuickTime plays it but audio is all choppy. It plays fine on my Apple. What am I doing wrong? If I create a QuickTime file, which I'm doing now, is there a special audio setting I should change so this will work on a PC?
Thanks!

When you export out of iMovie are you doing it using Share> Export QuickTime file or Export Movie? Believe it or not, you can export to Movie and rename the file extension from .m4v to .mp4 and get that to play on any Windows machine with Windows Media Player installed. It maybe a simple matter of saving it out to Movie, renaming it and sending that one along to the client, see if that one works better.

H.264 export without audio creates files that are not recognized in Quicktime or VLC

Dear all,
I need to generate h.264 files with video only. (short clips for use with a "clickable" catalog on an iPad)
Used the "H.264" category and chose a preset. Unchecked "Audio" so I only get the video exported.
The resulting .m4v file is not playable in Quicktime or VLC or MPEG streamclip.
When I leave audio enabled with the same preset, the file is fine, but as soon as I export without audio, the resulting file is unreadable.
Source material is ProRes 422HQ, audio+video, about 30-40 seconds long.
Any clues?
Carl.
Mac Pro 5,1
24GB RAM
Nvidia Quadro4000
4TB internal RAID0
OS 10.7.5
Premiere 6.0.2

Thanks Jeff, I did get that far ;-)
I'm sorry, probably my question wasn't very clear. Of course I can find some technical info about the iPad...
And of course some of the presets in Media Encoder provide basic starting points for encoding.
But... there is also the first iPad, I couldn't find the specs about it on the Apple site. On everymac.com I found:
Apple reports that the iPad supports "H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats."
So if I want to be compatible with all iPads I need to probably stay under 720p30 with [email protected] for H.264
When I look at
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC
I find (from the example values) that 1280x720@30p is quite near the maximum matrix size. So with 1024x576 I should be ok there. My bandwith of about 2Mbit is also well within range in this case. But what if I want to fill an iPod screen (1024x768) with the highest possible quality video? How do I calculate if this fits the max frame size requirements, where this is expressed in a number of luma samples and macroblocks? What is my max bandwith? The tables says that the "Max video bit rate for video coding layer (VCL) kbit/s" should be <14.000kbps. Does that directly translate to the sliders in my encoding app?
If you look in the table "AVC software implementations" (under Software encoder feature comparison) you can see that some features that are supported in MainConcept, and not supported in Qt. (8×8 vs. 4×4 transform adaptivity, Quantization scaling matrices, Separate Cb and Cr QP control, etc. What are these exactly?)
In Streamclip one can choose to have B-frames or not, in AME there is no such control. Does that mean it always encodes with B-frames? Why would one not want to have B-frames?
A lot of parameters in AME H.264 encoding seem to be set to certain fixed values that are not accessible to the user. Other programs (Sorensen, Telestream) provide the user with access to more parameters. Which parameters in AME are set to what (fixed, non-accessible) values and why?
As I said earlier, Quicktime reports different codecs for what should be the same format but from different encoders. Why? Is there a program that can analyze a H.264 stream and report about it in more detail than VLC/Quicktime?
etc. etc. etc....
If anyone could recommend an online resouce or a book to learn more about the ins and outs of H.264 encoding/decoding that would be great. I have the first edition of Charles Poynton's (brilliant!) book "Digital Video and HDTV", which does talk about MPEG-2 but not H.264. I saw that the second edition goes a bit more into detail about H.264. Does anyone have the second edition? Worth buying just for the relatively small addition about H.264?
Thanks.
Carl.

Quicktime export from FCP universal, audio export function

Hey there, I just recently bought the 17 inch mac book pro and did the crossgrade swap to the latest version of FCP studio.
Doing my first complete video edit and DVD project and am at the export stage.
I am doing what I normally do on my dual 2.5 g5 and setting and IN point and an OUT point in FCP and exporting using quicktime.
Just as the defaults, (I do this and have done this dozens and dozens of times)
I do this, then I import that file (after FCP is done into compressor and go from there)
we all know the export using compressor thing isnt ready for primetime..
anyway, doing this and after the first dialgo box is done and it seems the whole thing is done...then a box comes up saying its exporting AUDIO and its going to take 4 hours!
I didnt choose this extra step, the default quicktime export dealy (not "using quicktime conversion) had all this covered I thought...I mean, it has every other time on the OTHER computer)
I canceled this and checked my resulting exported file (the quicktime one) and all the audio and video is intact..
but the process I cancelled bothers me...any ideas?
thanks so much

> sorry I am all over the place info wise maybe
No problem - we all find it hard to explain things clearly when we're frustrated by problems like this!
Well that's strange - but at least it's clear what's happeneing now!
I'm at a loss really but if it were me, I'd trash the preferences and repair permissions, then if that didn't work, I'd create a new project in FCP and transfer the clips over. Sometimes this can iron out strange bugs.
Failing all, I'd create a new ID on my Mac and work from there - but if this works, then Jerry's advice regarding the clean install is a must, really.
Another thing I'd try is exporting direct through Compressor - it's a wonderful tool and you really should get to know it. It would be worth using Compressor to export a QT movie to see whether it makes any difference.
Is the full project on the G5 as well as the MBP?
Andy
Quad 8GB. 250+500 HDs. G-Raid 1TB. NORTON. FCP 5.1.1. Shake 4.1. Sony HVR Z1E Mac OS X (10.4.7)
"I've taught you all I know, and still you know nothing".

Quicktime Export causing Out of Sync Audio?

I'm trying to export a self contained Quicktime movie from my timeline, and every time I try, the audio ends up being out of sync. What am I doing wrong?
The audio is set to just the defaults, 16 bit, 48khz.
Sequence settings: HDV1080p30
When I bring the final exported movie back into FCP, it plays out of sync.
Exporting through the Share feature to bluRay resulted in perfect sync audio, so I'm at a loss as to why this isn't working.
Please help!

Allright, since nobody out there seems to have the answer - I'm going to share what I discovered so that the next person will actually get an answer without having to spend hours and hours finding it in other forums. Here goes:
Problem: Audio plays in sync on the timeline, an export from the timeline through Share to bluRay results in correctly synced audio; but a Quicktime Export with current settings results in a final movie where audio is out of sync with the video.
Solutions: I found two solutions to this problem:
1- When exporting to Quicktime Movie, check "recompress all frames". This solution had mixed reviews, with lots of people saying you should never do this, as it will reduce the quality of your final output; while others said the reduction in quality was not noticeable to the naked eye. I guess you can try it and be the judge.
2- In your sequence settings, change the compression setting to Apple Pro Res. This is the setting I decided to go with, as I'm currently awaiting the 10 hour render.
I did do a quick and dirty test on the ProRes option, where it appeared to work. Since the audio is correctly synced in the beginning of the video and then slowly falls out of sync (obviously the 30p to 29.97 problem), I had to run a test using my entire sequence. If you run a test on a 2 minute sequence, it will appear to be correct, because it is a slow falling out of sync issue - the problems occur later in your project (just fyi). Here is what I did (in case you want to try it on your project):
I created a new sequence and then changed the compression setting from HDV1080-30p to Apple Pro Res 422. I dragged my sequences into this sequence (so they were nested). I unlinked the audio and then selected about a 20 second area from about 3/4 of the way through the project. I sliced this section and then removed all the video before and after (so it would speed up render time and only render black, but I would still be able to see if the audio synced up later - I hope that makes sense - this made my export time only 12 minutes). After it exported, I reimported the movie, found the little 20 second area, and it was correctly synced. So, now I am exporting the whole thing. I sincerely hope this works. I don't have lots of 10 hour blocks just lyin' around!
Since my audio issue was most likely due to the fact that I captured and edited in 1080 30p, I believe it must be a bug in FCP that exports the Quicktime movie in 29.97 regardless of whatever your sequence settings are (believe me, I tried to change it to 1080-30p and it didn't work). That is why I think the Apple Pro Res option works, but it involves a total re-render of your project. This is also why I believe it plays fine in the timeline, because my timeline was set to 30p. Again, I also believe that is why my export to BluRay through Share resulted in correctly synced audio - the bluRay export I believe uses the Pro Res codec (which, by the way, took 19 hours).
Wish Apple would fix this bug.
Message was edited by: Chermeier1

Dual-track audio after export plays on first clip, but not on second?

So, I've been working on a project with video that has two audio tracks, and they play fine in the preview window in premiere, but as soon as I export them, the first clip of it works, but the second clip I have does not have the second audio track, just the first. If anyone could shed some light on whats going on that would be great. Also, I tried using media encoder, in which I couldn't hear either of the audio tracks.

Hi incinirate,
So, I've been working on a project with video that has two audio tracks, and they play fine in the preview window in premiere, but as soon as I export them, the first clip of it works, but the second clip I have does not have the second audio track, just the first. If anyone could shed some light on whats going on that would be great. Also, I tried using media encoder, in which I couldn't hear either of the audio tracks.
That's rather strange. Sorry to hear that.
Where did these files originate? From a video camera, screen capture, webcam, or mobile device? What is the format of these files? More details on your system, OS, version of Premiere Pro, etc., please.
Thanks,
Kevin

Can't export MPEG from Quicktime without losing audio

I'm trying to take a video I took with my Sony DSC-N2 and reduce its size. I've tried exporting it to different formats with Quicktime (Pro 7.1.6) but everytime I do the new file has no audio. what can I do? This happens whether I'm on my old G4 or on the new black Macbook. Help!
David

I've found, sometimes, that QT loses your prefs for audio when exporting and, thus, exports NO audio
When you click on file> export, and then options, click on the audio tab and ensure that it has something selected. Assuming that you have the correct codecs installed, QT should then export with the audio
Good luck,
Paul

Choppy audio after exporting

I exported the audio of my entire project, but now the exported audio is choppy, almost like it's skipping and I can't revert back to the original. I'm fustrated! Please help!
MBpro Mac OS X (10.4.10)

Hey Sue,
Thanks a lot for the response. Here's the full rundown. I have a home video project that I'm working on that I imported from my camcorder. The audio I was refering to is just the sound from the video.
I found that when I rendered letterbox on my clips, the audio would just cut out and I'd have to go back to my last saved to start again. If I did just rendered a clip or two at a time to letterbox, it'd be ok, but much more than that and it'd lose the audio. I saw on apple.com that others had experienced simiar problems and the fix was to export your audio from you project, THEN render the video footage(now the audio wav portion is right below the video portion on the timeline viewer). So I exported the audio from my entire project. Now, I play back the clips normally and the audio portion is choppy and almost undistinguishable. However, when i pull the audio clips by themselves and put them on itunes, they sound fine so i don't think it was during the exporting that it happened. My project is 52Gigs so perhaps my computer is just too busy or something.
In case you hadn't guessed, I'm new to mac. I purchased a mac specifically for video editing and so far, i've been pretty jaded by all of the different issues that pop up. Hopefully once I start using it more it'll start to make more sense. On the bright side, this whole discussion board thing is pretty cool. Thanks again for the help. Any advice is appreciated.

Exporting Quicktime .mov with audio

I searched for a solution to my problem for a while and haven't found any so I felt I'd finally ask.
I am exporting a movie in Premiere Pro 2.0 as a .mov. Yet everytime I export the audio quality is awful. The audio plays fine within premiere, and the video exports perfectly. I've tried uncompressed audio, and the result is a loud static sound. I've tried multiple compressors (oblivious to which I should be using) none of which offered good results (sometimes it was even silent). What settings should I be using? (By the way, the audio in the scene is .mp3 and .wav, but I felt using the uncompressed setting would be find since I wouldn't be recompressing the audio)
I'm sure this is a very basic issue that has been addressed multiple times, but I couldn't find a thread or resource on the internet that helped with this issue I'm having. Thank you for any help you can offer, I appreciate it.

I use the same settings, as you, with one exception - instead of 8-bit, choose 16-bit for the Sample Depth.
I also dislike using MP3 as a source. With the exception of tiny SFX files, I always convert these to PCM/WAV (Uncompressed) 48KHz 16-bit, before Import. That does NOT restore all the data lost with the MP3 compression (I hate the sound with MP3, but that's a different topic), but it gives me the best source to edit. I use Adobe Audition, but the free Audacity does a great job of this.
Hope that the 16-bit does the trick for you.
Good luck,
Hunt
BTW - what are you using to play the resulting MOV?

Quicktime 5.1 audio merge error?

Hi everyone,
I need advise with a problem using Quicktime 7 Pro's audio features.
There seems to be a problem merging two mov files:
I merged two movs, they both have the same setup of 5.1 audio, each in one audio track, same channel order (as checked using cmd + j - audio settings).
The second mov has got an additional audio track with stereo (lt/rt) information. I deleted the additional track before merging. Then I exported the audio as AIFF and it shows correct 5.1 audio in the film inspector window. Finally I burned the video and audio file on a blu ray disc using Toast.
To my surprise, the audio displayed by my soundsystem is 5.1 for the first minutes and switches to stereo, after the point I merged the movs.
I got a lack of understanding here, maybe it is a Toast problem, but I wanted to ask for advise here, too. Maybe I made an error merging the files.
Thanks in advance, cheers
Loki

JediVaidez,
Sorry, for not getting back to right away. Spent the last few days on Black Sea. In Istanbul it was 35 degrees Celsius in the shade so some cool off time in the sea was needed.
You can read about the decoder on Dolby's website
http://www.dolby.com/professional/proaudio_engineering/products_mastering-DVDHD.html
The microphone site is...
http://www.holophone.com/
I just searched the prices and this is what I found.
H2-PRO 7.1 Surround Microphone
$5,670
Captures 5.1, 6.1 and 7.1 surround sound.
Requires phantom power.
Includes cable with 8 XLR outs.
H3-D 5.1 Surround Microphone
$1,602 Captures 5.1 surround sound. Requires phantom power.
Includes 5m cable with 6 XLR outs.
H4 Super Mini 5.1 Surround Microphone
$2,358 Camera-mount mic.
Uses 4 AA batteries.
Outputs 2-ch.
Dolby Pro-Logic encoded audio or 6 outs via 3 stereo mini jacks.
I found these prices on Saved By Technology's website (http://www.savedbytechnology.com/main/productsus.htm) They are in US dollars.
Then I get the gear I will post some examples and how-to details on the web.
I use Digital Performer to edit my final audio sequence and mix with a Tascam DM-24 digital mixer. You can mix with the program just fine but I like to push buttons and faders with my fingers, not a mouse. You could also use Sound Track Pro or even FCP. Use Compressor to encode your AC3 file for the DVD.
Hope this helps
Peace
illtrax

When exporting separate audio and video streams, the audio drifts out of sync

So this is my first slightly larger project in Final Cut Pro X.
When I export my finished project (around 12 minutes long) straight to quicktime, it plays back perfectly.
When I export using compressor, the resulting audio and video streams are two different lengths. The audio comes out a full second longer. If you try to lay them down in a program like Adobe Encore, the audio starts out perfectly in sync. Two minutes in you notice the video is slightly out of sync with the audio. By the end of the video it's comically bad, over a second out of sync.
What's even more vexing is if I try to take the quicktime file that IS in sync upon playback, and try to convert it burn that to a dvd or blu-ray using toast, the problem re-emerges.
I triec searching around, but most of the suggestions that came up were vauge, like, "Upgrade to a real program like Final Cut." (This was in reply to people who were using free software programs.)
I did see one idea surface where 44 and 48 kHz sampling rates don't play well together. So I combed through my project and found all the 44.1 songs that were used, and swapped them out with upsampled versions. Nothing changed. It didn't sound like it would fix it, as people usually said it was a specific amount of frames off, not something drifting out of sync.
So the question is, does anyone have any suggestions on what could be causing this? Thanks! :-)

Project settings can be accessed and changed by selecting the project and pressing command-J. Then, in the inspector, click on the little gear in the lower-right hand corner to access the settings.
Why are you trying to output video/audio separately? If the content plays in-sync when exporting a quicktime movie (using current project settings), you could try separating the video/audio using MPEG Streamclip as a second step instead of using compressor. For audio, don't change the sample rate from the project settings, and use uncompressed audio (AIFF) as the output format.

Quicktime export = choppy audio first 5 to 10 seconds

Similar Messages

Maybe you are looking for