When uploading multimedia or binary files to your Amazon Mobile App Distribution Portal account, files larger than 100 MB must be uploaded using FTP. To upload your larger assets using FTP, simply follow the below instructions:
On the Images & Multimedia or Binary File(s) tab in your app details, click on the FTP instructions and naming convention link to obtain the app-specific naming conventions you will need to upload via FTP.
FTP Upload Steps
1. Select the app whose file(s) you will be uploading using the dropdown
2. Use the generated name list to rename any assets over 100 MB to the specific file name provided—this file name is how Amazon will know what app and asset field to apply the file
3. Using the FTP client of your choice, login and upload your renamed files using the specified FTP server and username—if needed, reset your password to have a new one sent to you
Allow up to 20 minutes for an e-mail confirmation that your assets are processed and available. You will also receive an e-mail if the uploaded asset is invalid or misnamed. E-mails will be sent to the e-mail address you have provided us in your Distribution Portal profile. Once the asset has been uploaded, finish any remaining steps and review your content one last time. After you have satisfied all the asset requirements, you will be able to submit your app to have it reviewed for inclusion in the store.
For more information about the FTP naming convention, click "Read More".