Вот кое-что пишут
http://www.google.com/support/forum/p/youtube/thread?tid=3bc2a517524767a9&hl=en
Suggested "Instructions for advanced Mac users creating .MOV files for YouTube" Report abuse
gbcali
Level 7
12/14/10
Some of the recommendations in YouTube's "Help articles" for Apple users creating .MOV files contradict guidance given elsewhere or use terms only software developers would be familiar with. I believe the instructions below cover the major do's and don'ts for creating .MOV files that are "YouTube Friendly".
Instructions for advanced Mac users creating .MOV files for YouTube
YouTube doesn't support or improperly decodes some of the more advanced features and data types that may be used in .MOV files. When creating .MOV files that will be uploaded to YouTube you can increase the chances your movie will playback properly by conforming your .MOV file to the following specifications:
Video Track (required)
- must contain 1 and only 1 Video Track
- do not use "Frame Reordering"
- H.264 encoded
- 23.98, 24, 25, 29.97, 30 are acceptable Frame Rates
Sound Track (optional)
- may contain 1 and only 1 Sound Track
- Sound Track [if present] must be of equal length as Video Track
- AAC encoded
"Prepare for Internet Streaming" (required)
- must be "Fast Start"
Do not include any other type of "Tracks" other than the 1 required Video Track and 1 optional Sound Track. Do not embed XML, XMP, or EDL data.
If you are creating a .MOV for a client that may upload the file to YouTube you should explain the importance of not editing the movie in any way since that invalidates the "Fast Start" option. Make sure clients understand that adding or deleting bumpers, bugs, color-bars, credits, black, slates, etc. is considered "editing".
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Update:
Sound Track specs addendum:
- "AAC" encoded with "Constant Bit Rate" option
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