I need help error: cannot open input file (video.mp4) -4

[Ghostmariachi]

after downloading the video successfully. I extract MPD file with yt-dlp and i run command with mp4decrypt but don't deleted DRM. please check.

https://vcmedios.secure.footprint.net/historylatam/AE_Ole_-_LATAM_History/112/media-20...mpd/stream.mpd


[Attachment 61548 - Click to enlarge]



[Attachment 61549 - Click to enlarge]


I have read the forum, is there any solution. or what am I doing wrong

[Sviests]

Wrong argument. it is suppose to be --key trackid:key and not --key KID:key. TrackID can be viewed by mediainfo.

[codehound]

Firstly you need to download the video and audio separately.

Always update yt-dlp before you start:

yt-dlp -U

To see available formats - note upper-case F

yt-dlp -F --allow-u "https://vcmedios.secure.footprint.net/historylatam/AE_Ole_-_LATAM_History/112/media-20210322195403-3qtu-0.mpd/stream.mpd"

Then download video of choice, download audio of choice.

For best video:

yt-dlp -f video_avc1_1 --allow-u "https://vcmedios.secure.footprint.net/historylatam/AE_Ole_-_LATAM_History/112/media-20210322195403-3qtu-0.mpd/stream.mpd"

For Spanish audio:

yt-dlp -f audio_es_mp4a --allow-u "https://vcmedios.secure.footprint.net/historylatam/AE_Ole_-_LATAM_History/112/media-20210322195403-3qtu-0.mpd/stream.mpd"

Decrypt video, decrypt audio

mp4decrypt.exe --key KID:KEY "stream [stream].mp4" "decrypted-video.mp4"

mp4decrypt.exe --key KID:KEY "stream [stream].m4a" "decrypted-audio.m4a"

To mux together decrypted video+audio you need ffmpeg.exe in same folder as your mp4decrypt.exe and yt-dlp.exe

ffmpeg -i "decrypted-video.mp4" -i "decrypted-audio.m4a" -c copy "output.mp4"

(The error message looks like either your downloaded file is not in the same folder as mp4decrypt.exe or is named something differently to "video.mp4") - forget this operation anyway. DL separate video+audio.

[LZAA]

stream [stream].mp4 -> video.mp4

[codehound]

Wrong argument. it is suppose to be --key trackid:key and not --key KID:key. TrackID can be viewed by mediainfo.

The trackid IS the KID

And should always be confirmed by looking at the .mpd in a text editor (Notepad or NPP) as MediaInfo parses it incorrectly occasionally from the downloaded file.


[Attachment 61556 - Click to enlarge]

[lomero]

the problem is the name of encrypted video.
no "video.mp4" like write by OP on first post but "stream [stream].fvideo_avc1_1.mp4"
with correct name of downloaded file, can decrypt correctly.

[Ghostmariachi]

Thanks to everyone who contributed their ideas, especially codehound, thanks to you I made it possible. THANK YOU SO MUCH.