Specifications
| Format name | HDV 720p | HDV 1080i | |
|---|---|---|---|
| Media | "Small" or "Large" DV cassette | ||
| Video | |||
| Frame aspect ratio | 16x9 | ||
| Frame size in pixels | 1280 × 720 | 1440 × 1080 | |
| Pixel aspect ratio | 1.0 | 1.33 | |
| Scanning type | progressive | interlaced | progressive (optional) |
| Video signal | 720p/60, 720p/30, 720p/24, 720p/50, 720p/25, | 1080i/30 (29.97), 1080i/25 | 1080p/30 (29.97), 1080p/24 (23.98), 1080p/25 |
| Video Compression | MPEG2 Video (profile & level: MP@H-14/HL) | MPEG2 Video (profile & level: MP@H-14) | |
| Sampling frequency for luminance | 74.25 MHz | 55.6875 MHz | |
| Chroma sampling format | 4:2:0 | ||
| Quantization | 8 bits (both luminance and chrominance) | ||
| Compressed video bitstream rate | ~18.3 Mbit/s | ~25 Mbit/s | |
| Audio | |||
| Compression | MPEG-1 Audio Layer II, PCM | MPEG-1 Audio Layer II | |
| Sampling frequency | 48 kHz | ||
| Quantization | 16 bits | ||
| Audio modes and data rate | MPEG-1 Part 3 AL 2 Stereo (2-channel) at 384 kbit/s (192 kbit/s per channel); optional MPEG-2 Part 3 AL 2 4-channel at 96 kbit/s per channel. |
||
| System | |||
| Stream type | MPEG transport stream (MPEG-TS) | ||
| Stream interface | IEEE 1394 in alpha mode (also known as FireWire 400 or i. LINK) | ||
| File extension | .m2t (generally) | ||
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