 Avid DNxHD is a mastering quality codec. This means that although compressed, the picture from a DNxHD movie will not only be visually lossless, it will look the same after multiple generations of encoding and re-encoding (which we don't do in Synchromesh) or after a lot of color conversions, scaling and color corrections (which you can elect to do in Synchromesh). Avid DNxHD was ratified as SMPTE VC-3, a move that gave us great confidence in the codec's quality and staying power - so much so that we recommend you make your recordings in this codec if you intend to edit with them. Here's the salient points. Feature
|
| Benefit
| Ratified as SMPTE VC-3
|
| Will be widely supported and is well specified
| Supports standard SD and HD formats and picture sizes
|
| Material can be created on standard edit suites, supports SDI without scaling
| Three selectable bit-rates - 220, 145 & 36 Mbps
|
| Can be used in different situations, but is easy to create to the correct specs
| Supports 10-bit video in the 220x flavor
|
| 10-bit video reduces banding when outputting as 8-bit RGB
| Supports Alpha channel
|
| Use for keyable video - one of the few compressed formats to support this
| Free Quicktime component
|
| Material can be reviewed or used easily
| Works in 4:2:2 [:4] colorspace
|
| Best balance of visual quality to disk space, no horizontal sub-sampling as seen in other HD formats
|
Avid's DNxHD Page
|
