I see a lot about repeating an animation sequence, but my issue is much simpler.
I'm using the video editor to make a very simple video, just a slide show really. I have a video of a person giving a talk and I'm just overlaying a set of slides to illustrate her talk. I've got that working very well.
The original video of the talk ends abruptly at the end of her last sentence. I'd like to fix that by extending the last frame for a few seconds and then fading to black. So my question is very simple, but I don't see it answered anywhere:
How do I get the last frame of a video to repeat for a few seconds?
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I tried the technique suggested in the comment by @Edgel3D, but it didn't work. I'm saying that here so I can attach a picture of what happened:
The video strip in channel 2 used to be the same length as the audio strip in channel 1 at 11,575 frames. I pulled out the end handle on channel 2, which seems to have expanded it to either 11,771 frames or 11,772, depending on which number in the image above I should believe. But when I play it, after frame 11,575 the video window goes to a black and grey checkerboard pattern. The last frame is not being repeated. Am I doing something wrong?

What you have to do is slide the timeline cursor to the last frame(s) that gives you the right image. Snip it there with SHIFT-K, select the right hand segment and delete it. Try stretching the new end-handle. Also make sure the frame range you've got set below will acomodate the frames you're trying to render after the stretch. If that doesn't work. could it be the format or codecs of the film you've imported? I mostly convert to avi format first when the vse acts up with some mp4's etc.
– Edgel3D Feb 29 '20 at 10:23