Blu-ray Duplication
What is Blu-ray?
Blu-ray, also commonly known as Blu-ray Disc, is a next-generation optical disc format. This format was developed to enable the recording, rewriting and playback of high-definition video (HD), in addition to storing large amounts of data. The Blu-ray name is derived from the blue-violet laser used to read and write data to and from the disc. The letter “e” was intentionally left off so the term “Blu-ray” so the term could be registered as a trademark.
What video codecs will Blu-ray support?
Blu-ray discs support MPEG-2 - enhanced for HD, also used for playback of DVDs and HDTV recordings; MPEG-4 AVC - part of the MPEG-4 standard also known as H.264 (High Profile and Main Profile); SMPTE VC-1 - standard based on Microsoft's Windows Media Video (WMV) technology.
How much video can you fit on a Blu-ray disc ?
The Blu-ray optical disc format stores up to 25GB on a single-layer disc (BD-25) and up to 50GB (BD-50) on a dual-layer disc; translating to approximately 9 hours of high-definition (HD) video on a 50GB disc and 23 hours of standard-definition (SD) video on a 50GB disc.
What audio codecs will Blu-ray support?
- Blu-ray audio codec: Linear PCM (LPCM) - up to 8 channels of uncompressed audio. (mandatory)
- Blu-ray audio codec: Linear PCM (LPCM) - up to 8 channels of uncompressed audio. (mandatory)
- Blu-ray audio codec: Dolby Digital (DD) - format used forDVDs, 5.1-channel surround sound. (mandatory)
- Blu-ray audio codec: Dolby Digital Plus (DD+) - extension of Dolby Digital, 7.1-channel surround sound. (optional)
- Blu-ray audio codec: Dolby TrueHD - lossless encoding of up to 8 channels of audio. (optional)
- Blu-ray audio codec: DTS Digital Surround - format used forDVDs, 5.1-channel surround sound. (mandatory)
- Blu-ray audio codec: DTS-HD High Resolution Audio - extension of DTS, 7.1-channel surround sound. (optional)
- Blu-ray audio codec: DTS-HD Master Audio - lossless encoding of up to 8 channels of audio. (optional)
| Parameters | Blu-ray | DVD |
| Storage capacity | 25GB (single-layer) | 4.7GB (single-layer) |
| 50GB (dual-layer) | 8.5GB (dual-layer) | |
| Laser wavelength | 405nm (blue laser) | 650nm (red laser) |
| Numerical aperture (NA) | 0.85 | >0.6 |
| Disc diameter | 120mm | 120mm |
| Disc thickness | 1.2mm | 1.2mm |
| Protection layer | 0.1mm | 0.6mm |
| Hard coating | Yes | No |
| Track pitch | 0.32µm | 0.74µm |
| Data transfer rate (data) | 36.0Mbps (1x) | 11.08Mbps (1x) |
| Data transfer rate (video/audio) | 54.0Mbps (1.5x) | 10.08Mbps (<1x) |
| Video resolution (max) | 1920×1080 (1080p) | 720×480/720×576 (480i/576i) |
| Video bit rate (max) | 40.0Mbps | 9.8Mbps |
| Video codecs | MPEG-2 | MPEG-2 |
| MPEG-4 AVC | - | |
| SMPTE VC-1 | - | |
| Audio codec | Linear PCM | Linear PCM |
| Dolby Digital | Dolby Digital | |
| Dolby Digital Plus | DTS Digital Surround | |
| Dolby TrueHD | - | |
| DTS Digital Surround | - | |
| DTS-HD | - | |
| Interactivity | BD-J | DVD-Video |