Has there been any discussion about writing Magic Lantern DNG metadata in iXML format into the MLV wav file (sidecar) for something like Blackmagic Resolve's extensive metadata use?
I've so far tested a 3 line batch script which dumps the contents of the MLV's into named folders and then uses the open source CLI utility BWFMetaEdit, found here:
http://sourceforge.net/projects/bwfmetaedit/files/binary/bwfmetaedit/1.3.0/ to write the contents of an iXML file into the .wav acting as audio + sidecar.
For %%a in (*.MLV) do mkdir "%%~na"
For %%a in (*.MLV) do mlv_dump.exe -f 10 --dng --cs3x3 -o "./%%~na/%%~na_" %%a
For %%a in (*.MLV) do bwfmetaedit.exe "./%%~na/%%~na_.wav" --in-iXML="my_iXML.xml"
Contents of iXML file.
<?xml version="1.0" encoding="UTF-8"?><BWFXML><IXML_VERSION>1.5</IXML_VERSION><PROJECT>Test</PROJECT><NOTE>Blackmagic Metadata Write Test</NOTE><BLACKMAGIC-KEYWORDS>magic,lantern,test</BLACKMAGIC-KEYWORDS</BWFXML>
There are a lot of camera related metadata options for the the usual, like ISO, WB, Shutter, Camera Model, Firmware Version as well as more project related tags. Which I could work through testing the tag names and writing the data to wav.
So is it something a dev would consider implementing DNG EXIF into wav sidecar? This would also open up anyone wanting to develop a metadata entry GUI in camera to write maybe project and multicam type data via ML?
If not then I suppose there's someone writing a MLV extractor which could do the extract EXIF data with EXIFTool, write to XML file, write to wav and so on.
It's then simple in Resolve to Import Media by "Add Folders & Sub Folders To Media Pool (Create Bins)" to give each MLV folder a separate bin containing the DNG sequence and wav, then choose the "Auto Sync Audio Based On Timecode", to link the wav to the DNG sequence resulting in wav metadata sidecar contents being displayed in the Resolve Metadata Interface for any DNG or wav selected.
