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Movie Making Manual/Submitting Music Videos
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Submit a copy on DVD to the record label for them to view
For broadcast, the standard is DigiBeta. See the Movie Making Manual/Submitting to a broadcaster page for details of time codes, bars, tones etc.
More and more labels are putting their music videos on-line. See the Movie Making Manual/Sales and Exhibition/Putting Videos Online section.
You could also try to pursuade the label to put your video on any CD / DVD release. The guidelines for encoding a video for CD release are similar to the guidelines for putting a video online.