Add a 'play' button to every comment.
Once you press that play button, about a second before and a second after the marked keyframe will be played in a looping fashion. If you press stop, by pressing the button again, it would jump back to the keyframe the comment was based on.
Often times, the feedback given is not about that exact frame, it's about that moment in a course of a few seconds. To present your case with a comment, you often times need to scrub through time around that keyframe so that more context is given. Doing that now is a bit cumbersome, especially if your video has 30.000 frames and pressing anywhere on the timeline could be a huge jump in time. With that said. A timeline zooming would be great. Similar to what Maya has. I'll add that as a seperate request.
Button expection:
A play button and a text field next to each other on each Comment.
  • The the play as mentioned above.
  • The textfield would give you the ability to set how many frames you want to jump before or after for that specific comment. Typing '2 sec' in the field would be converted to '60 frames' dependingon the fps you have your project on.