I posted it hat video on my computer and it scrambled both on YT and here on the dope.
But now I played it on my IPad and it was fine.
So where are these options settings DPRK spoke of?
Both videos run just fine in their entirety on my Abdroid phone using most recent mobile Firefox.
For those who haven’t seen it, this is what the scrambling looks like
I have never seen anything like that on YouTube (and the video that @pkbites recently posted plays just fine for me), but I have seen it on Facebook.
In the video player window, there should be something that looks like a little gear. If you click on it, there is a sub-menu with different “quality” settings.
There is a huge caveat: that menu does not tell you which format is which number. The simplest (but hacky) way to see this is to download the youtube-dl script for your operating system, save it somewhere, and run youtube-dl <your link> -F. I already did this for the video in your post:
format code extension resolution note
249 webm audio only tiny 50k , webm_dash container, opus @ 50k (48000Hz), 88.09KiB
250 webm audio only tiny 63k , webm_dash container, opus @ 63k (48000Hz), 110.87KiB
251 webm audio only tiny 113k , webm_dash container, opus @113k (48000Hz), 197.21KiB
140 m4a audio only tiny 129k , m4a_dash container, mp4a.40.2@129k (44100Hz), 226.41KiB
160 mp4 116x144 144p 48k , mp4_dash container, avc1.4d400b@ 48k, 30fps, video only, 84.56KiB
278 webm 144x180 144p 61k , webm_dash container, vp9@ 61k, 30fps, video only, 106.28KiB
133 mp4 192x240 240p 92k , mp4_dash container, avc1.4d400c@ 92k, 30fps, video only, 159.98KiB
242 webm 240x300 240p 124k , webm_dash container, vp9@ 124k, 30fps, video only, 215.87KiB
134 mp4 288x360 240p 177k , mp4_dash container, avc1.4d4015@ 177k, 30fps, video only, 308.72KiB
243 webm 360x450 360p 205k , webm_dash container, vp9@ 205k, 30fps, video only, 357.32KiB
135 mp4 384x480 360p 267k , mp4_dash container, avc1.4d401e@ 267k, 30fps, video only, 465.57KiB
244 webm 480x600 480p 287k , webm_dash container, vp9@ 287k, 30fps, video only, 499.71KiB
136 mp4 576x720 480p 470k , mp4_dash container, avc1.4d401f@ 470k, 30fps, video only, 816.81KiB
247 webm 720x900 720p 480k , webm_dash container, vp9@ 480k, 30fps, video only, 834.36KiB
137 mp4 864x1080 720p 1081k , mp4_dash container, avc1.640020@1081k, 30fps, video only, 1.83MiB
22 mp4 576x720 480p 599k , avc1.64001F, 30fps, mp4a.40.2 (44100Hz)
18 mp4 512x640 480p 768k , avc1.42001E, 30fps, mp4a.40.2 (48000Hz), 1.31MiB (best)
What you can see is that the supposedly single video can come out in a dozen differently formatted and encoded streams. The exact list of possibilities will also vary for different videos. I suspect that some of these play OK on your device, and some don’t.
The first thing you can test is to pick different “qualities” from the gear menu and see if that changes a working video to scrambled and vice-versa. Then, please tell us if it’s always a specific “quality” that gets messed up.
ETA just NB that @pkbites 's video’s options mostly come down to VP9 versus AVC1. Also, some of them are mp4, some are WebM, etc. So the detective work will be to figure out which combination of options does not work.
ETA2 people who are encountering the scrambling lines (I personally have not), which phone and operating system were you using?
ETA3 @pkbites I see from your post that it was scrambled on your computer, not the ipad or phone. Maybe try updating the video driver on your computer and see if that does it? Or try a different browser/video player for it?