Monday, April 14, 2008
CinemaDNG
Adobe has announced CinemaDNG as a device-independent format for raw video. The press release from Adobe states that "Adobe intends to leverage its successful Digital Negative Specification (DNG) file format as a foundation." This will be a "publicly documented and open file format" and will include support for proprietary metadata. No technical details beyond this are available yet, and any specifications or implementations are a long way off; what Adobe has announced is "plans to lead an initiative to define" the format.
DNG is a TIFF-based format. It's hard to see how any version of TIFF can be used as the foundation of a video format.
# posted by Gary McGath @ 12:27 PM 
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It's not so hard to believe that you could use TIFF for video. It's actually rather efficient to write and (more?) efficient to read. When writing you only have to remember three things: the location of the tag that contains the pointer to the data, the location where you started writing the data (that's pointed at by the first value), and the amount of data that you wrote. Once you're done writing a hunk of memory, just go back to #1 tell it #3 and then move to the end of the file.
And since you can use TIFF as a container format, it's pretty easy to stuff compressed RAW data from the device into it.
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And since you can use TIFF as a container format, it's pretty easy to stuff compressed RAW data from the device into it.
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