As a curious bonus feature, slimRAW can actually convert some uncompressed DNG video which is unsupported in Premiere CC to losslessly compressed DNG video which works with Premiere CC. The trade-off is a small sacrifice of compression.
Slimraw log pro#
Since support for CinemaDNG in Premiere Pro CC and SpeedGrade CC is incomplete, slimRAW provides a user selectable option to output losslessly compressed CinemaDNG files compatible with these two applications. Applications using Adobe Camera Raw are exceptions since ACR modifies metadata in the input files on import and records settings in there. Moreover, the compressed files should be easy to swap in place of the originals in existing projects. This means that in any video production application supporting losslessly compressed CinemaDNG there is no difference between the original files and the losslessly compressed files. It doesn’t touch the color matrices or any other color related metadata.
This includes CinemaDNG specific metadata like time code, frame rate, T-stop, etc. SlimRAW preserves all the original metadata. SlimRAW has just finished working on some Canon 5D Mark3 Magic Lantern raw DNG footage. Some clips actually break the 3:1 barrier. With test footage from various cameras slimRAW compression ratios range from around 1.5:1 to 2.8:1 (a reduction of size to 66-35% of the original size). They depend on the nature of source material: noisy and detailed footage will compress less than clean and defocused footage. Lossless compression ratios aren’t fixed. cameras outputting losslessly compressed CinemaDNG).
Slimraw log software#
SlimRAW also achieves the best compression ratios I’ve seen for lossless CinemaDNG compression (including software and hardware, i.e. slimRAW is fast enough that in a lot of cases performance is limited by storage bandwidth and not by the CPU.
Slimraw log windows#
Example processing speeds (on a 3.4ghz Intel i7-4770 under Windows 7, running footage off SSD): around 110fps for Digital Bolex D16 2K CinemaDNG uncompressed footage and around 70fps for Blackmagic Design Cinema Camera 2.5K CinemaDNG uncompressed footage. Processing is parallel and scales with available CPU cores. SlimRAW compression was coded from scratch for performance. This would allow for practical offload-with-compression on location in one step: offloading video from camera or recorder storage to main storage while compressing it in the same time. An important goal in development was to achieve faster than real time compression speeds.
Slimraw log free#
It should also work in any CinemaDNG conformant software.Īn obvious application of slimRAW is to compress existing uncompressed CinemaDNG footage and free storage space without any loss of quality. SlimRAW losslessly compressed CinemaDNG output has been tested to import fine in Blackmagic Design daVinci Resolve, Assimilate Scratch, The Foundry NUKE, Adobe Premiere Pro CC, Adobe SpeedGrade CC, and in Adobe software using Adobe Camera Raw for CinemaDNG/DNG import – After Effects, Photoshop, Lightroom. Other sources are likely to work if the footage is 8, 12, 14 or 16-bit (but no guarantees). It has been tested to work with footage from Blackmagic Design Cinema Camera (pre firmware 2.1) Digital Bolex D16 Sony FS700/FS7 CinemaDNG raw recorded through Convergent Design Odyssey 7Q/7Q+ Canon DSLR Magic Lantern raw converted to CinemaDNG/DNG through any of the available converters Ikonoskop A-Cam dii uncompressed CinemaDNG from Kinefinity cameras (including 6K from the KineMAX) Fastec Imaging TS and HiSpec high speed cameras Indiecam indiePOV and indieGS2K (12-bit footage). SlimRAW supports all types of uncompressed CinemaDNG and DNG raw video that I could get my hands on. A fast CinemaDNG compressor developed by yours truly. So I’ve been thinking about a better solution. But it had some issues and the (lack of) speed was annoying, to say the least. I’ve described a possible workflow before. CinemaDNG lossless compression has been an interest of mine for some time.
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