2016 Subaru WRX STI Isle of Man TT -- Flat Out (50 fps deinterlaced video of full lap incar)

Watch Mark Higgins take Bray Hill at 170 MPH with acceptable video quality.

This video is just a deinterlaced copy of    • Video   which I created the following way:

1. Download copy of the original video using open source software called yt-dlp: github.com/yt-dlp/yt-dlp
2. Deinterlace the video using ffmpeg "bwdif" deinterlacing algorithm with "bottom field first (bff)" option:
ffmpeg -i original.webm -vf bwdif="mode=send_field:deint=all:parity=bff" -tune grain -c:v libx264 -preset slow -crf 17 -c:a copy output.mkv
3. Upload the resulting video back to Youtube.

The above FFmpeg command (executed on Linux) takes the original video from WebM-containainer, converts from incorrectly labeled interlaced video at 1920x1080@25fps to 1920x1080@50fps progressive video. The above command will work for any interlaced video but depending on the original camera, you might need to use "tff" (top field first) instead of "bff" mode needed for this video. When the original metadata is broken the best way is to encode short clip with both options and use whichever setting results in smooth video. There will be lots of judder or stutter in the video if the field order is wrong way around. I used the tuning "-tune grain" after testing "film", "animation" and "grain" and this option resulted in best visual quality for the trackside objects. The whole deinterlacing and recompressing took about an hour on my old computer with the above mentioned slow preset.

I hope @Subaru runs the above deinterlacer against the original video and publishes the results because doing it against the variant downloaded from Youtube (which has been incorrectly compressed because of invalid metadata that claims it's a progressive video) results in less than optimal results. This is still better than the "official" interlaced video so I put this on Youtube. I'll gladly transfer this to official @Subaru channel if asked by @Subaru.

0:00 Intro
0:16 Inlap and start of the narration by Mark Higgins
2:27 The record lap
20:02 Start of outlap and outro