No audio when exporting to h.264 (mp3 - aac conversion fails)

Using QuickTime Player Pro 7.5.5 on OS X 10.5.6:
I have a video file (video format: On2 VP6, audio format: MPEG Layer 3 mono) that I am attempting to export for high-quality YouTube.
When I export to H.264 my only audio export option is AAC-LC. But the resulting mp4 file has a silent audio track. I've tried different settings on the audio (mono/stereo, different data rates) but that makes no difference.
Is there a way to successfully export the audio when using the H.264 format?

Thanks -- it's too bad QuickTime Pro doesn't properly handle this. I successfully used iTunes as a workaround as well (I exported the audio track to a standalone mov, opened in iTunes, exported as an MP3, then added back to the video in QuickTime Pro).

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We have two PCs with Premiere Pro and AME installed, and just upgraded to CC. On one computer exporting works fine, on the other one, I'm losing the audio when exporting from mpeg to flv. I have used the same preset as on the other computer (that works) and also tried other presets that came with AME.
I can't figure out why this wouldn't work on one but works fine on the other? Anyone who knows?

How are you determining that the FLV has no audio? Are you playing it back in VLC Player or importing it into Flash?
Also, do you see a full range of formats on the system where you don't hear audio? If some formats are missing this might be a licensing issue. Also check if AME recognizes audio on the MPEG source (hover over it in the queue and look for audio info in the tool tip).

Please help. When exporting a 720p video using Quicktime Conversion in FCP it saves some extra temporary files to my computer. The file is called ICMMultiPassStorage. This file gets so large that eventually the program and exporting process crashes.

Please help. When exporting a 720p video using Quicktime Conversion in FCP it saves some extra temporary files to my computer. The temporary file it saves is called ICMMultiPassStorage. This file gets so large that eventually the program and exporting process crashes. I have been able to locate the file using GrandPerspective and close out of FCP to delete it. But when I try exporting the movie again it creates the ICMMultiPassStorage file again. I have made sure my scratch disks are set to my external hard drive so I know that isn't the issue. How do I fix this problem so these temporary files are not being stored on my internal hard drive instead of my external?Thanks!

Try exporting the timeline "using current settings" via Make QuickTime Movie, then submit that clip to Compressor for the transcode. This should be faster and less painful.

**Missing Audio when Exporting to HD**

Hi,
I have been trying to find a solution to missing audio for sometime and there are many discussions on this forum regarding this topic. I have an external drive and in the past I have lost audio, I guess because the event and the project were on different drives, I have resolved that. Also, the problem that I have is not related to the speed of a clip or that I have more than 10GB in my events (I don't). There have been other audio issues and I have always been able to resolve them but this one has me stumped! I thought that perhaps the graphics card was not up to the task but this has just happened and now I am confused.
I have just completed a project that was only 3 minutes long 403.5 MB. The movie was imported to iMovie from my video camera and listed as an Event, I also used movie clips and stills from iPhoto, I added titles and transitions. I then exported the movie to Media Browser (mobile size) so that I could import it into Garage Band to make an soundtrack. I then exported the soundtrack as an AAC to iTunes (as I have read that there are issues with MP3 and audio missing). I then opened iMovie and dragged the soundtrack into my project and republished the completed project to Media Browser in the HD size. No problem all works well, I was really happy! Onwards I thought and get another 2010 video finished, wrong!
On my next project I have done everything that I have described above, this time the project is only 349.8 MB (smaller). The audio on the HD size has failed. I have copied all the files onto my desktop and reimported everything. I have tried exporting using Quicktime or as a Movie but still no audio. I have found that the 'consolidate media' is grayed out when I have all my clips in the project editor, because they are all on my hard drive. As soon as I add the iTunes track that I have exported from Garageband the consolidate media option becomes available. If I select this I then get the message that the iTunes track cannot be copied as it is not on my hard drive! It is on my hard drive (I disconnected all external drives so that there would be no confusion!).
I cannot understand how the first project worked and the second smaller project failed using the same process! I thought that I would share this information with the forum in the hope that perhaps a solution can be found. I am able to publish the second project to my mobile me in the large and mobile sizes, it would be good to have the HD size for a DVD. There seems to be no logical pattern to the audio disappearing on export. Your thoughts or help would be very welcome.
Kind regards,
Watchthebat.

In Soundtrack if you have selected to use only channel 2 of a stereo file (right click on stereo file and select mono->channel2) you will hear channel 1 when you export. Its a massive bug.
Could that be the source of your problems? The bug can certainly create exported mixes that sound like stuff is missing.
There's a recent thread around here about this.

Premiere pro CS6.0.3 keeps crashing when exporting to H.264

Good day everyone,
I am trying to export my timeline using some of the H.264 setting and it keeps crashing on me. Not all of the H.264 like the Apple and Android settings. Those work fine. But trying to export to H.264 Youtube (any presets), H.264 HD 1080I 29.97 and HD 1080P 29.97 it will process to around 80%-95% than crash. It gives me an error message than gives me three files that can help with finding the problem.
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I have tried creating new projects, new sequences and such. No luck.
Currently I am using Premiere Pro CS6.03, Adobe Media Encoder CS 6.03 as well. Windows 7 64bit, Intel Core [email protected] with 8GB ram. My video card is a NVIDIA GeForce GTX 670. Any advice would be most helpful and appreciated.
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I solved what might be a similar problem last evening by lowering the speed of my i7-3055K (nominal 3.9GHz) to 4.2GHz from 4.5GHz.
My symptoms were similar: new PC build (10 days old); crashing or blue screens about 1 minute into a 3 minute Premiere export or AME render, Win7 Pro. The system had previously been very stable. At first I suspected an H264 codec problem or an iTunes/Quicktime incompatibility but when an AVI render using the NTSC DV Widescreen preset crashed it broadened my search for solutions. Mercury GPU render on/off did not fix the crash problem.
The render last evening was probably the first time that my new CPU was seriously stressed. Lowering the CPU speed was the quick solution. Overclocking sites/forums probably have tips on stress tests, memory tests, voltage tweaking, etc but as long as the system is stable I'll probably be satisified with the slower CPU solution.
The CPU cooling is the Intel stock fan. 32GB of Corsair memory is running at its rated PC1600. CPU and memory voltages are the defaults, i.e., no tweaking. Intel DZ77RE-75K motherboard. EVGA GTX680 FTW+ 4GB at its defaults, i.e., no overclocking/tweaking. 1000 watt power supply , which is probably overkill but it's what I had lying around (I have an almost identical setup (GTX460 rather than GTX680) which runs fine at 4.2GHz with a 700-watt PSU -- but I've never stressed that 2nd PC with an Premiere/AE/AME render).

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Pro Tools HD is very good but very expensive. I know some people who don't like it, so I think its down to personal preference. It is used in every professional studio I have worked in, making it good for compatibility. You also won't find nasty bugs like the one i've described in Soundtrack - they've been developing the software for a long time. Personally, I find Pro Tools very quick to work with and very stable. Also, I would recommend Pro Tools LE if you're not going to be restricted by 48 tracks and lack of surround mixing.

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Loss of audio when exporting

When exporting to quicktime I am losing all the audio attached to the movie , also the clips appear greyed out and only show the contents of the clip when I scroll over them, and I seem to be missing the clips in the events browser, am I missing something painfully obvious?

am I missing something painfully obvious?
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Whenever I try to export my Movie using iMovie 09, certain scenes have garbled audio.
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There is a well known audio glitch in iMovie '09. If making speed changes to your project, such as slow or fast motion, you must use only the presets shown on the speed slider. These are: 12.5%, 25%, 50%, 100%, 200%, 400% and 800%. Do not use custom speeds, by manually entering your own percentages.
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Message was edited by: John Cogdell

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When I export my presentation to Flash, the audio is gone. Any ideas? No such problem when exporting to QuickTime Movie...

This might help:
http://docs.info.apple.com/article.html?artnum=300832

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I'm having trouble sending a native HDV project back to tape. The picture looks fine on the export, but the audio is severely distorted. It's not overmodulation. I have a -10 limiter on the audio master track, and the VUs on my deck don't show anything like any clipping. But the sound it's making is similar to clipping. Any ideas? Thanks,
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system specs:
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Howard,
Thanks for the reply. It's hard to describe the sound...it actually reminds me of the sound a 16mm projector makes when it loses its loop, sort of a strobing distortion. As for constancy, no it's definitely not constant in the sense that, say, ground loop hum is constant. It's "attached" to the sounds as the play back, so that when the timeline is very quiet it's hardly audible, but when you get any sound at all, it comes up. I know that might sound like clipping, but I don't see how it could possibly be for a few reasons:
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Stu

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I have spent countless hours editing a movie with music overlaid as well as audio grabs moved etc. It looks great on screen - usually.
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Of course that's always the way
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Wonderful. Starting to dislike iMovie. hmm

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No audio when exporting to h.264 (mp3 - aac conversion fails)

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