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  1. 2nd Sep 2026 04:59 #1
    MASUMCHAUDHURY
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    How to decrypt a video when

    1) original encrypted video is deleted
    2) decrypted video has pink/green line due to wrong key

    Is it possible to re-decrypt as I have the correct key now?
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  2. 2nd Sep 2026 12:33 #2
    YmFzZTY0
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    No
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  3. 3rd Sep 2026 05:49 #3
    YYD
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    Code:
    mp4decrypt.exe --key <KID>:<KEY> <input file> <output file>
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  4. 3rd Sep 2026 09:04 #4
    Obo
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    No. That does not work without the original encrypted file.
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  5. 3rd Sep 2026 09:12 #5
    YYD
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    Taking this video as an example, prepare two keys—one incorrect and one correct—to perform the decryption
    Image Attached Files
    Last edited by YYD; 4th Sep 2026 at 00:28.
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  6. 3rd Sep 2026 11:42 #6
    Obo
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    Decryption with the correct key will work, for sure. Decryption of a video that is already decrypted with the wrong key will not work. Regardless which key you use.
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  7. 3rd Sep 2026 12:02 #7
    YYD
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    I decrypted my video using the wrong key; after deleting the original file, I decrypted the "wrong-key video" using the correct key
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  8. 3rd Sep 2026 12:28 #8
    YYD
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    I overlooked an error: N_m3u8DL-RE encapsulates the format during download, and the encapsulated file cannot be decrypted
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  9. 3rd Sep 2026 14:27 #9
    larley
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    Should be possible to recover IF your decryption tool did not remove the senc/tenc boxes
    Bypass HMACs, One-time-tokens and Lic.Wrapping: https://github.com/DevLARLEY/WidevineProxy2
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  10. 3rd Sep 2026 19:08 #10
    YmFzZTY0
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    Absolutely impossible
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  11. 4th Sep 2026 00:01 #11
    larley
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    In theory it's possible but only if tenc/senc boxes are still there's which mp4decrypt and Shaka packager I believe remove.
    Bypass HMACs, One-time-tokens and Lic.Wrapping: https://github.com/DevLARLEY/WidevineProxy2
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