Updated: October 3rd, 2013
By now you should have a few video raw files to process.
If not then make sure you read here:RAW video & ML -- Beginners Guide and FAQ -- READ FIRSThttp://www.magiclantern.fm/forum/index.php?topic=5520.0
THE ORIGINAL: RAW Video Post processing [Mac/Win/Linux]http://www.magiclantern.fm/forum/index.php?topic=5404.0
Remember: RAW means that your Picture Profiles have no effect on the final video colors, contrast, sharpness, etc. All of this should be adjusted in Post-processing.
Step 1 EXTRACTING THE DNG FRAMES
The RAW video files cannot currently be processed directly by any video editor. Each RAW file encapsulates the frames in DNG format so we need to extract these frames first:
1.1 Please download the RAw2dng.exe application for windows.
: In Windows just drag and drop the RAW video files to this exe and it will extract the dng frames in the directory where the RAw2dng.exe file is located.
If your card is formatted inside the camera, it will have FAT32 format in which case the RAW files will be split in 4GB chunks. You will need to join them in the following manner before you process them with Raw2dng.exe
1. Rename the files as file1.raw file2.raw .. etc
Use command line:
copy/b file1.raw+file2.raw+.... filenew.raw
1a. Rename files as file.001, file.002
Download file joiner splitter such as FFSJ v 3.3http://www.softpedia.com/get/File-managers/File-Splitter-and-Joiner.shtml
2. Extract DNG with latest RAw2dng.exe
here: HERE: http://acoutts.com/a1ex/raw2dng.exe
If you format your card outside the camera to Exfat then the camera will record files larger than 4GB. These files can be processed with the latest Raw2dng.exe See link aboveNice new apps for Windows being developed for automatic batch processes here:RAWanizer - windows batch generation of proxy files from RAWhttp://www.magiclantern.fm/forum/index.php?topic=5557.0RAW2DNG BATCHelor 1.1 Betahttp://www.magiclantern.fm/forum/index.php?topic=5645.msg39772#msg39772
1.1a For MAC users follow instructions here:raw2dng.app 0.7 Osx GUI development, bugs and updates
HERE: http://www.magiclantern.fm/forum/index.php?topic=5508.0Other technical details about DNG:
Install Adobe DNG Codec 2.0 (Needed to see thumb images in windows)http://www.adobe.com/support/downloads/detail.jsp?ftpID=5495
DNG = Digital Negative is a lossless raw image format which was developed by Adobe.http://en.wikipedia.org/wiki/Digital_Negative
In case you are wondering this is NOT CinemaDNG format
HERE: http://download.macromedia.com/pub/labs/cinemadng/cinemadng_p1_spec_091009.pdfHow to view DNG thumbnails in Windows:
Good review and methods here:http://photographylife.com/how-to-view-dng-thumbnails-in-windows
I use FastPictureViewer Codec Pack, which is great!http://www.fastpictureviewer.com/codecs/
A complete library of DNG support here:http://www.barrypearson.co.uk/articles/dng/products_y7.htm#convertersStep 2 MAKING NECESSARY ADJUSTMENTS TO DNG FRAMES
Now you should have you RAW file broken into its individual frames.
The next step is make some corrections of White Balance
. To do this you will need some software that can open the DNG files and allows to make the required adjustments.
The most powerful tool to do this is ACR (Adobe Camera Raw)
which is a plug-in for Photoshop. If you have it then:
2.1. Open all the files at once, if you computer does not have enough memory or speed you will have to note all of the settings and apply to smaller sets of images.
2.2. On the left side of ACR you will see a thumbnail of all of the opened images. Click on the first image on the left side and then click on Select All
2.3. Set the White Balance
according to the scene, this is a subjective step but you can have ACR set it for you if you in Auto
mode or simply choose from the options in the drop down menu which mostly represents the scene in which the video was recorded. For example you can set it to Daylight
, and this will adjust the WB=5500 and the Tint=10
2.4. Make sure that your settings in the Basic configuration are not moved from zero adjustment. Read carefully Technical Note 1 below step 2.6
2.5. On the bottom left side of ACR click on the Save Images
button where you need to make some selections as to where to save the files, the type of image format you want to save, and the quality of such format. The selection will depend on what type of software you have available for converting these images into a video file, and the desired quality of the final process. If you are not sure, select jpeg
format and the highest quality to make sure we do not lose any details i.e. Quality=12
2.6. Finally click on Save
and then on Done
. The ACR will work converting these DNG frames to your selected directory.TECHINICAL NOTE 1 :
In ACR 7.1 do not abuse the highlight, shadow recovery sliders because this might bring flickering from frame to frame.
In ACR 6.7 do not move the fill light and recovery sliders.
If you experience flickering then start backing off on ACR (BASIC) adjustment sliders. I have successfully used the sliders in ACR 7.1 Tone Curve
for highlight and shadow control without experiencing any flickering.
Follow this issue here:
Preventing Color/Luma Shifting When Processing DNGs in Adobe Camera RAWhttp://www.magiclantern.fm/forum/index.php?topic=5710.0Other software that can open and adjust DNGs:
2. Lightroom 4.2
Step 3 MAKING A VIDEO OUT OF THE NEW FRAMES (JPG, TIFF, DNG)
Most video production software will allow to import the frames and turn them into a video. Usually it is referred as opening an image sequence
and it allows to import all of the frames at once into an editable video.
One of the most powerful and free video editors is called VirtualDub
which is able to import the frames, do some fancy editing, and save it.
Originally it could only save in avi format but now there are plug-ins can be added to save in other formats.Download here: www.virtualdub.org/indexHere is quick how to:
Open VirtualDub File Open
Select Image Sequence
from selection type
Click on Video and Frame Rate
Change Frame Rate to (fps)
: 29.97 Click OK (Must match your RAW video settings)
Again Click on Video
and then Compression
Select new Codec Like CineForm
(Must install this one)
Click File Save AS AVI
To install CineForm codec you must install GoPro Cineform Studio. This codec will produce great results but if you want the full version which allows for greater color depth and 2K to 4K frame sizes you will have to purchase their Cineform Studio Premium program.
More details about this here:Cineform Studio (free) 1080p transcoding issues:http://www.magiclantern.fm/forum/index.php?topic=2695.0
That is it!
Now you have RAW video converted to and AVI file. Note that you may not be able to play this in a slow PC. This AVI file will be very large and require very high bitrates which may not be compatible with older PCs. For this reason I have mention above that you should install a compression codec to reduce the size of the file and make it a bit more readable in slow hard drives.
The beauty of this process is that it is conserving much of the original data contained in the RAW files. If you compress this video to other formats like mpeg1 you will lose all of the great details provided by RAW video recording.
This is where all of the more advanced video post processing methods flourish in an effort to pass all of the great detail, and color depth to the viewers. At this point one has to consider who are the viewers and the platforms available for viewing so the optimal choice of software and workflow will vary greatly.
Here you can find more discussions regarding more advanced workflows:RAW Video Post processing [Mac/Win/Linux]http://www.magiclantern.fm/forum/index.php?topic=5404.0
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