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

[premajee]

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())

How to download/play this video?

{
    "props": {
        "pageProps": {
            "token": "072511538325f89a3a18a423e6550127",
            "watermark": "532",
            "urls": [
                {
                    "bitrate": "360p",
                    "quality": "360p",
                    "path": "https://appx-static.appx.co.in/testing/ck-master.m3u8?quality=360p",
                    "backup_url": "",
                    "backup_url2": "",
                    "videoId": "NTQ1NjY0LTE3NjE5OTA0MzctLTM2MHAtLW1hc3Rlci03MjAwNjc5LjM3MjU1MjgwMQ",
                    "kstr": "kSQXHtOclUfuCCuyn0BicQo5eLEYTMd+sImz8wMjrV8=",
                    "jstr": "41IhEjgArMuaXDzJfdVPdMrUeBw0oxCxr8jgu1fKSx3vMgEKiaNXrqR0QLayaDAYuUVhbwzpgmvLi/h7kcfYO2G3PdgeA9oylkks............."
                }
            ],
            "isMobile": false,
            "isIos": false,
            "isLive": false,
            "quality": "360p",
            "isPremier": "0",
            "startDate": "",
            "gcp_cookie": "",
            "datetime": "1781250014266",
            "ivb6": "CJv6KjrmsZg9HEH4OLjihA==",
            "enable_adaptivebitrate": 0,
            "uhs_version": 3,
            "isAdmin": false,
            "debug": false
        },
        "appConfig": "U2FsdGVkX195QQZt9Vyt/+t6Qyk59eNwIruJ/+zNwYk=",
        "hasSession": false,
        "query": {
            "token": "072511538325f89a3a18a423e6550127",
            "watermark": "xyz@gmail.com%0A9082610090"
        },
        "tenant": null,
        "__N_SSP": true
    },
    "page": "/secure-player-v3",
    "query": {
        "token": "072511538325f89a3a18a423e6550127",
        "watermark": "xyz@gmail.com%0A9082610090"
    },
    "buildId": "hF7_6AQSqlg0cRsOUF7pL",
    "isFallback": false,
    "gssp": true,
    "appGip": true,
    "scriptLoader": []
}