- Open the video on youtube.com
- Pause on the frame (, / . to fine-tune)
- Right-click → Copy debug info
- Paste it below
- Paste the Twitch VOD URL below (a clip of just the run, max 30 min)
- Click Queue download — you can queue several at once
- Once a download shows "Ready," click Load
- Use the ◀/▶ buttons or , / . to go frame by frame
- Mark start/Mark end will give you your final time for the run
Optional paste the video URL here before you start marking, and you'll get a duplicate warning immediately instead of after finding the start point.
Send a clip of just the run — VODs over 30 minutes are rejected. Queue several at once; they download in the background, up to 3 at a time.