This is a script as a SPM executable that iterates through the 200 or so WWDC20 videos I had downloaded and renames them on disk using the JSON from the unofficial WWDC app.
The script expects video files with the name wwdc2020_{session-id}_hd.mp4 for example wwdc2020_10011_hd for session 10011. The output filename for this session will be: 10011 Author fragmented MPEG-4 content with AVAssetWriter.mp4.
FileRenamer <location of WWDC20 videos> <location of WWDC20 json>
The WWDC20 information json is included in this repository as WWDC20.json.