What happens if you use a WAV file for your source audio in Premiere Elements?
What is the duration of the projects involved in this problems.
What are the properties of your source media?
What project preset are you or the project setting for these projects?
What is your export settings under Publish+Share/Computer/presumed AVCHD and one of its .mp4 presets...which one?
The duration of the projects involved is small -- here, for example, is a project I tried that is only 4 minutes and 08 seconds, it has a .WAV audio source, and the audio drops out. Note that this project is for a totally different film -- shot with a completely different camera, and sound was recorded separately. It exhibits the same exact problem of the audio working in the preview, but dropping out in the exported mp4.
Source Properties of the Video:
File Path: H:\High Card\AUG2013\1\PRIVATE\AVCHD\BDMV\STREAM\00012.MTS
Type: MPEG movie
File Size: 2.2 GB
Image Size: 1920x1080
Frame Rate: 23.976
Source Audio Format: 48000 Hz - compressed - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00:04:08:19
Average Data Rage: 8.9 MB/second
Pixel Aspect Ratio: 1.0
Source Properties of the Audio:
File Path: H:\High Card\AUG2013\Sound\STEREO\FOLDER01\MONO-009.wav
Type: Windows WAVE audio file
File Size: 136.4 MB
Source Audio Format: 96000 Hz - 24 bit - Stereo
Project Audio Format: 96000 Hz - 32 bit floating point - Stereo
Total Duration: 00:04:08:31616
Average Data Rate: 526 KB / second
The project preset is a custom one I created under AVCHD--because I thought I had to match up the settings with that of the source clip. This is what it says when I select "Advanced"
NTSC, 1920x1080, 23.976 Progressive
AAC, 192 Kbps, 48 Khz, Stereo
VBR, 1 Pass, Target 3.00, Max 6.00 Mbps
Clip, Sequence 01
1920x1080 (1.0), 23.976 Progressive, 00:04:10:08
48000 Hz, Stereo
When I select Video, the settings I have selected:
Profile: "Main" Level "5.0", Pixel Aspect Ratio: "Square Pixels", "VBR", "1 Pass" Target Bitrate "3", Maximum Bitrate "6")
When I select Audio:
Audio Format: AAC
Output Channels: Stereo
Frequecy: 48 Khz
Audio Quality: High
When I select Multiplexer:
Stream Compatibility: Standard
Yes, I confirmed I have this particular preset selected in my export settings. No clue what the problem is.
Another thing that is interesting: Not all clips have the audio drop out. I did a few clips this morning where the sound works perfectly in both the preview and the export. Same Camera, same audio recording device -- different outcome.
Addendum: The sound drops out even when I try to output an .mp4 using a default project setting -- in this case, I tried it with AVCHD - MP4 - NTSC DV Standard
I am not an audio engineer. So keeping that in mind.
That audio spec for the .wav of 96000 Hz 24 bit Stereo hits me with thoughts of compatibility issues in general.
Can you take the 96000 Hz to 48000 Hz with 32 bit Float?
Project Preset in New Project Dialog Should Be (Based on the Video source)
Export Settings for 1080p24 as AVCHD.mp4
with Presets = MP4 - 1920 x 1080p24
The audio in that export AVCHD .mp4 file should be AAC Stereo 48000 Hz 32 Float
Please give that a look to see it is a good or not so good idea.
I think you could be onto something here....
Because on the timeline -- when I right-click on the audio clip, and select "Show properties" it tells me that the source audio format is 96000 Hz....
But when I go into Publish and Share - Advanced - Export Settings,
No matter what preset I select there -- it is always telling me that the source is 48000 Hz.
So it thinks that it is 96000 Hz in the timeline, but 48000 Hz during export. Maybe that's why it works in preview mode, but not after an export.
I don't see a way for me to tell the Export Settings that the Source is actually 96000 Hz, not 48000 Hz. All of the options there let me change the output, rather than the source/input.
So what you said above may very well be the solution:
>Can you take the 96000 Hz to 48000 Hz with 32 bit Float?
I just don't know how to do that. Do I need special software which will convert 96000 Hz clip to 48000 hz clip?
I'm no audio engineer either... kind of a novice at all this stuff, trying to figure it out as I go
Premiere Elements as no frequency setting higher than 48000 Hz.
Let us try this and hope it does the job of going from 96000 Hz 32 Float to 48000 Hz 32 Float. I think it will.
Download and install the free audio editor named Audacity.
Import your audio file into Audacity
Go to Tracks Menu/Resample.
In the Resample dialog, select 48000 Hz for the "New Sample Rate (Hz).
Export as .wav (File Menu/Export/and the choice for .wav.
Please let us know the outcome. I am thinking positive thoughts.
So far... great news, it's working!
I'll just use Audacity to resample all of my audio clips @ 48000 Hz, and use the resampled clips as my source audio, instead of my original audio clips.
Can you hear me applauding your success across cyberspace? Great job.
We are very happy for your wonderful news. Great learning experience for all, including me.