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You have the option to upload video files and associated metadata to your account via FTP. This is helpful for uploading very large files, or multiple files at once.
If desired, you can pre-configure metadata by uploading an XML file along with your video file. This file must contain the video source, and can also be used to specify which channel to upload to. Either way, metadata can be configured as normal in the UI after the video has been uploaded. More information can be found in the Important Notes section.
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