Add sequential download to be able to playback the video while it is downloading without having to wait for the download to finish

[trimechee]

Hi, huge thanks for Mr Nilaoda for the great vital life saver N_m3u8DL-RE specailly the compatibiity with my windows 7 32 bits os!

So, unfortunately, using video donwload extensions like Cat-Catch and "Live-stream-donwloader":

https://github.com/xifangczy/cat-catch

https://github.com/chandler-stimson/live -stream-downloader

https://github.com/helloyanis/file-downloader-unleashed (without blacklist)

web browsers no longer allow to see the temporary hls video while it is being downloaded in the download folder, before I could playback the video during its download but I can't anymore, for example with the first media player vidmoly video on this site:

https://v5.voiranime.com/anime/seirei-gensouki-2-vf/seirei-gensouki-2-10- vf/

i vitally need to be able to playback the video while it is downloading because my internet connection is weak and waiting for the download to finish can be slow.....

so i tried many download managers to solve this problem, they detect the hls streaming video embed and download it and i see the temporary video in the folder of download but the big problem is the download folder contains lots of small hls video fragments impossible to playback them with potpayer or vlc, FDM has implemented the sequential download and we could playback the hls video while it was downloading but FDM can no longer detect and download video from many streaming sites....

the only remaining ultimate hope please is our beloved N_m3u8DL-RE in combination with the Cat-Catch extension to detect the hls streaming video embeds and send them to N_m3u8DL-RE to download and we hope please the great life saver N_m3u8DL-RE made by the great Mr @nilaoda will display the temporay hls video in donwload folder and will download the hls video with a sequential download to avoid seeing the many small hls video fragments and we hope it can gather these small video fragments into a single file during downloading in order to preview and playback the hls video during its download without having to wait for the download to end, thank you!