So lets look at what we have in terms of video / audio.
1)Repeated unimportant segments of video.
2)A fairly good sounding audio track.
3)An audio track which is not the same length of the video track.
4)The video issues do not start happening till over 20 minutes into the uploaded video, and then happen at multiple times over the next 15 minutes.
What can we conclude about the video? Well I can't conclude anything, but I sure get a lot of questions.
Could this be an issue with the recording of the video stream? I don't know seems like we might have some experts here on video recording equipment here that might be able to say if this is a type of problem that is even possible, maybe even some with knowledge of the type of equipment used in police dash cams.
Has anyone seen anything like this 'just happen' in digital video before? I haven't but my experience is limited. Anyone else?
Why is the audio OK but the video is bad? Well audio and video could be recorded separately, and if they weren't they are not hard to separate, and audio is much easier to edit.
Could the video of been edited? Well sure it was probably at least cut for upload. If it was edited the editor really sucked.
If the video was edited, why would the video be edited? Maybe it was cut to remove something that happened in one of the frames somewhere during one of the repeats. Maybe the audio was edited too and it was edited to more closely match the audio length (matching just as well as the video was edited). Maybe someone started editing the video to hide something in a missing segment and didn't finish or get to the audio before it was uploaded.
What other things besides editing and recording failure could explain the video issue? I don't know.
Do we have any experts here who given the available youtube video on the Texas Department of Public Safetys youtube page could do analysis on a more in depth level than watching it? I don't know but I think this question is why I see this belonging on Hacker News.