Converting HLSdl Command to FFmpeg for AES-128 Encrypted Video Download

[GirlsGill]

Hey, I am not going to ask how to download AES 128 encrypted videos because I already know how to do that after checking multiple posts in video help forums.

My question is that I use the following command to download an encrypted AES 128 video:

hlsdl -K "65125DA49032A3B9AD74C6E9FDF02D98" -o "abc.ts" "https://d2a5xnk4s7n8a6.cloudfront.net/spees/w/o/5e356a710cf24531c92ac49f/v/608c2d510cf274502bebb091/u/62b17baa0cf2995efd8b74c3/t/aeade224671194a69668077a98310f36/p/assets/videos/5e356a710cf24531c92ac49f/2021/04/30/608c2d510cf274502bebb091/hls_1M_.m3u8"

How do I use this command in ffmpeg? Can someone modify it? I have the decryption key in the above command and the URL.

So that I can write a Python script to automate these downloads in Python.

[premajee]

Use N_m3u8DL-RE tool for download

Installation Guide:
https://forum.videohelp.com/threads/420000-N_m3u8DL-RE-Installation-Guide-for-Mac-Linu...ows-10-11-2026

N_m3u8DL-RE "https://d2a5xnk4s7n8a6.cloudfront.net/spees/w/o/5e356a710cf24531c92ac49f/v/608c2d510cf274502bebb091/u/62b17baa0cf2995efd8b74c3/t/aeade224671194a69668077a98310f36/p/assets/videos/5e356a710cf24531c92ac49f/2021/04/30/608c2d510cf274502bebb091/index.m3u8" --custom-hls-key "65125DA49032A3B9AD74C6E9FDF02D98" -M "format=mp4" --tmp-dir "Dow" --save-dir "Download/MyFolder11" --save-name "TWS-1"

What’s Happening Here
✔ --custom-hls-method AES-128 — Explicitly tells N_m3u8DL-RE that the stream uses AES-128 encryption.
✔ --custom-hls-key — Supplies the raw AES-128 key in hex format. You often need the prefix hex: so the tool knows it’s hex-encoded.
✔ -M format=mp4 — Instructs N_m3u8DL-RE to merge (mux) audio and video into a single MP4 after download.
✔ --tmp-dir — Folder for temporary files during download.
✔ --save-dir / --save-name — Where and what the final file is called.

[bxxxy]

Hi, are you active, by any chance? I wanted to know how you got the key? I have the timestamp data

[bxxxy]

This key "65125DA49032A3B9AD74C6E9FDF02D98" is the apkId by any chance?

also an update, i managed to decrypt myself using apkId itself.
python code:

from Crypto.Cipher import AES
import base64

# ---- inputs ----

apkId = "apkid"

with open("timestamp", "rb") as f:
    data = f.read()

# ---- step 1: slice bytes ----

f = data
v = f[0:16]   
g = f[48:64]   

# ---- step 2: derive stage-1 AES key from apkId ----

apk_key_hex = apkId[:8] + apkId[40:]
apk_key = bytes.fromhex(apk_key_hex)

cipher1 = AES.new(apk_key, AES.MODE_ECB)
intermediate_key = cipher1.decrypt(g)

# ---- step 3: derive final HLS AES key ----

cipher2 = AES.new(intermediate_key, AES.MODE_ECB)
final_aes_key = cipher2.decrypt(v)

# ---- result ----

print(final_aes_key.hex())

[premajee]

what you want to know, can u explain, and also share the images/screeshot and also share timestamp data