Implement "yt-dlp-mp4decrypt" as a download engine as powerful alternative to the classic traditonal "yt-dlp-ffmpeg/lux/you-get" please!

[audacieuxnumber1]

Hi!

Maybe I already made this request in a previous comment, but I didn't open a separate issue. Given the critical importance of this powerful tool and for reference purposes, I'm opening a separate issue :

So,

I discovered that mp4decrypt is a very powerful and reliable sensational alternative to ffmpeg, which can be useful in many cases and solve some technical problems and limitations:

mp4decrypt ffmpeg alternative:

https://www.bento4.com/documentation/mp4decrypt/
https://www.bento4.com/downloads/
https://github.com/axiomatic-systems/Bento4/tree/master/Source/C%2B%2B/Apps/Mp4Decrypt

So we hope please that our great generous hero Mr. @helson-lin will invent a new tool and integrate it natively in ffandown and this new tool will be called for example:
"yt-dlp-mp4decrypt" and will use yt-dlp and mp4decrypt together !

just like this open source tools that combines yt-dlp and mp4decrypt :

MP4Decrypt plugin for yt-dlp
https://github.com/pratikpatel8982/yt-dlp-mp4decrypt
https://github.com/pratikpatel8982/yt-dlp-hianime

and :

--use-mp4decrypt
in
N_m3u8DL-RE

a developer looked at the code of these 2 open-source download engines and told me their code seems similar to yt-dlp....but these 2 download engines seem specially adapted to download from Chinese sites and maybe it will be a good idea to integrate also "mp4decrypt" to these 2 download engines too please! :

https://github.com/soimort/you-get
https://github.com/iawia002/lux

I think this will make ffandown even more powerful and adaptable to our specific needs with certain situations and sites. Thank you a lot :)

[helson-lin]

Hi!
Do you have any scenes that require decrypting MP4 videos?
What is the specific scene like?

[audacieuxnumber1]

mp4decrypt is known to be able to download DRM videos from netflix, disney, amazon prime... I saw tutorials and posts on how to use mp4decrypt on videohelp website but I didn't understand how to use it because it seems complex:

WidevineProxy2
https://github.com/DevLARLEY/WidevineProxy2
https://forum.videohelp.com/threads/416316-[Release]-WidevineProxy2-Extension-Bypass-HMAC-1-timetokens-Lic-wrapping#post2754872

https://forum.videohelp.com/threads/416689-How-can-I-download-videos-from-this-website-%28nemzetiarchivum-hu%29

https://forum.videohelp.com/members/308780-2nHxWW6GkN1l916N3ayz8HQoi

https://forum.videohelp.com/members/307915-larley

https://discord.com/invite/zvGBza34JP

download from Netflix, Disney, or Amazon Prime don't interest me.
Some of these services aren't available in my country, and we need a paid account to access the videos. Plus, I know plenty of clean, ad-free warez sites that offer all anime videos ad-free, but I heard there's a warez site, a pirate streaming site that uses DRM to protect its streams! Additionally, I'm seeing more and more of my favorite anime streaming sites like:
https://streaming-integrale.com/category/animation/?tr_post_type=2

migrating their videos to the famous abyss.to hydrax video platform, which doesn't display ads and resists censorship. I'm thinking maybe mp4decrypt can help download managers like our beloved ffandown to download complex streams like hydrax videos from the abyss.to platform...

N_m3u8DL-RE seemed to be using mp4decrypt by default, then there was a problem with Chinese filenames not being recognized by mp4decrypt, and N_m3u8DL-RE migrated to ffmpeg, but added a flag to switch to mp4decrypt :

--use-mp4decrypt

Then N_m3u8DL-RE fixed the bug with mp4decrypt, and N_m3u8DL-RE seems to be using mp4decrypt by default. ......

So My idea : great ffandown try, if Mr @helson-lin finds relevant this tool, to add mp4decrypt, if technically possible, as an additional optional tool that the user will download manually himself to decrypt certain complicated streams that ffmpeg can't decrypt.....Thanks!

[audacieuxnumber1]

If adding mp4decrypt is not possible technically or is a bad idea, then we understand and we hope instead that these 2 rare download engine that can download videos from many sites will be added to ffandow please to make ffandown even more powerful and top number 1 of download managers, thanks ! :

https://github.com/soimort/you-get
https://github.com/iawia002/lux