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Supported formats for YouTube

This specification applies to the publish of assets from GV STRATUS system to YouTube.

Formats supported are as follows:
Supported formats Notes
Video 1080p HD
MPEG-2 Saved with a .MPG extension
Audio Dolby AC-3 For MPEG-2, with audio bitrate: 128 kbps or more
MPEG Layer II For MPEG-2, with audio bitrate: 128 kbps or more
AAC For MPEG-4, with audio bitrate: 128 kbps or more
Close Caption SubRip (.srt) Only basic versions of these files are supported. No style information (markup) is recognized. The file must be in plain UTF-8.  
TTML: Timed-Text Markup Language (.ttml) In partial implementation. SMPTE-TT extensions supported for CEA-608 features. iTunes Timed Text (iTT) file format is supported; iTT is a subset of TTML, Version 1.0. Styling and positioning are supported.  
Scenarist Closed Caption (.scc) These files have an exact representation of CEA-608 data, which is the preferred format whenever captions are based on CEA-608 features.  
Thumbnail JPG 1 thumbnail along with the Video/Audio content. YouTube creates three individual thumbnails per upload based on their algorithm, and only one can be selected as the clip thumbnail.  
Note: A standard YouTube account has the file size limitation of 2 GB and the clip duration depends on the used video codec.

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