FFmpeg expert help with 2 aac file difference

Both the attached audio files: [url removed, login to view] and [url removed, login to view] are converted to aac with exact same ffmpeg command: ffmpeg -i [url removed, login to view] -vn -ar 44100 -ab 128k -vol 5 [url removed, login to view] But there is something different about the two files. Only the [url removed, login to view] made with [url removed, login to view] will stream on our system (to mobile phones). What is the difference between the two aac files? Can you tell me a way to use ffmpeg so they produce 2 truly identical .aac format files so that both files behave the exact same? Can you tell me what is different about these two aac files?? I cannot see any difference in their media info..but something is different. Something in the header or something? Your job: Tell me what is different about these two aac files. Tell me how to use ffmpeg to make the [url removed, login to view] file into an aac file that will behave exactly the same as the aac file created from the flv file. Basically, how can I make them identical .aac types of files so no computer has an excuse to treat them differently. I have attached both the original files, .flv and .caf. And the 2 .aac files that have some difference.

## Deliverables

1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement).

## Platform

linux

iPhone

Project ID: #3839062

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