On the Unbox website, we give some general information about the quality of Unbox videos. Because some videos come in from content owners already encoded, and some are encoded by us, the specifics of each video can vary.
Below are some technical details about our most common video and audio parameters.
DVD-quality PC File
- Video Encoding Type: 2-pass bitrate VBR
- Video Codec: Windows Media Video 9 Advanced Profile
- Video Bitrate: 2500 kbps avg, 6000 kbps peak
- Video Frame Size: 640x480 (4x3 content), 720x408 (16x9 content)
- Video Frame Rate: 23.98, 29.97 (same as source)
- Video Keyframe Interval: 4 seconds
- Audio Encoding Type: 2-pass bitrate VBR
- Audio Codec: Windows Media Audio 9.1 Professional
- Audio Bitrate: 192 kbps avg, 1000 kbps peak
- Audio Sample Rate: 44.1 kHz, 48 kHz (same as source)
TiVo "Best Quality" File
- Video Encoding Type: 2-pass bitrate VBR
- Video Codec: MPEG-2
- Video Bitrate: 2800 kbps avg, 6600 kbps peak
- Video Frame Size: 640x480 - all 16x9 content is letterboxed
- Video Frame Rate: 23.98, 29.97 (same as source)
- Video Keyframe Interval: 4 seconds
- Audio Encoding Type: 2-pass bitrate VBR
- Audio Codec: MPEG-2 Layer 3
- Audio Bitrate: 192 kbps avg, 1000 kbps peak
- Audio Sample Rate: 44.1 kHz, 48 kHz (same as source)
Portable Video File
- Video Encoding Type: 2-pass bitrate CBR
- Video Codec: Windows Media Video 9
- Video Bitrate: 600 kbps
- Video Frame Size: 320x240 (4x3 content), 320x180 (16x9 content)
- Video Frame Rate: 23.98, 29.97 (same as source)
- Video Keyframe Interval: 6 seconds
- Audio Encoding Type: 2-pass bitrate CBR
- Audio Codec: Windows Media Audio 9
- Audio Bitrate: 96 kbps
- Audio Sample Rate: 44.1 kHz, 48 kHz (same as source)
-- Sam
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