help me to get PSSH from NHK Plus and convert subtitles to normal format

[kienkzz]

hello,
i want to download this content (https://plus.nhk.jp/watch/st/e1_2024080304723, need VPN) from NHK Plus (NHK+) but i don't know how to get PSSH. It's M3U8, not MPD like before.
I've tried to get PSSH from N_m3u8DL-RE like this:

17:12:19.557 WARN : PSSH(WV): IhQwNDA4LTIwMjQwODAzLTEyNzMtMEjj3JWbBg==
17:12:19.559 WARN : KID: dbac446da52e4d1488994c8af0aeaa7f

but it didn't work. It said:

{"code":400,"error":true,"message":"Failed to extract KID from PSSH: Invalid box type 0x30382d32, not 'pssh'"}

Also, the subtitle from this site when convert to SRT is like this:

[CS][CS][SWF_7][SDF_840_480][SDP_58_29][SHS_4][SVS_24][SSM_36_36][APS_7_8][YLF][COL_4][COL_5_1]ほんとだ！

i don't want to edit them by hand, because it take many times to do it. So how to get PSSH form NHK+, convert subtitles with true format? (just text without that complex text).
you can try using 1 min trial to test, or get m3u8 and delete _1min in url.
Hope you can explain me how to get them. thanks.

m3u8 url:

https://vod-npd2.cdn.plus.nhk.jp/npd2/7fe1-0408/20240803/1273-1-3-093c1f072561b440e58abe1bd94b7a51/cenc/manifest_m1500.m3u8

license url:

https://drm.npd.plus.nhk.jp/widevine/license

subtitle:
playlist_2024-08-07_17-00-55.srt

Edit: Now I could get PSSH from KID, but it said:

{"code":400,"error":true,"message":"Failed to get license: 401 Unauthorized"}

although i copy authorization: Bearer but it still not work.

Edit 2: I use EME Logger and it works! It can get the key, but subtitle, how to convert it to normal format?

[2nHxWW6GkN1l916N3ayz8HQoi]

c01ff0382ecf4ddd88a0f1f27201986d:d2e727e4823b4f361ff06a876e2d5a07
d00b857f99a242ffadc88c149ff5d921:861cb750a3213b1f91066d0d9677bb86
81359133f3c3422d95439faaaea157e2:caf5a814656689eb0669742473a57bc1

No idea if this works for your full m3u8 trick since I get 403 either way due to no VPN.

Edit: for that messed up vtt, you can use notepad++ with regex replace all

\[\w+]

replace with empty space. You're gonna end up with a few empty lines, but you can use subtitle edit after to fix it

fixed.srt

[kienkzz]

Thanks for your help, but I've another problem:
I can't decrypt it via mp4decrypt although I use 3 keys you sent.
here is video and audio i've downloaded before.
btw thanks for your help with subtitles!
playlist_2024-08-07_16-53-41.mp4

playlist_2024-08-07_16-51-02.m4a

[2nHxWW6GkN1l916N3ayz8HQoi]

Try decrypting the 1 min m3u8 version. Don't go for the full one. Maybe they have different keys.

Edit: in your first post, you said you can get the pssh and the keys, do you get different keys?

[kienkzz]

for 1 min m3u8 version, video and audio are working with the last one. and i get the same key with you

[Attachment 81297 - Click to enlarge]

[2nHxWW6GkN1l916N3ayz8HQoi]

If you know how to get the keys for the short version AND can make the full version play in your browser naturally, then get the other keys for the full one by doing the same steps. Otherwise what you're trying are exploits and those will most likely fail since you aren't supposed to obtain that full video.

[Frieren]

MPD (337MB)

https://vod-npd2.cdn.plus.nhk.jp/npd2/7fe1-0408/20240803/1273-1-3-093c1f072561b440e58abe1bd94b7a51/cenc/manifest_m6000.m3u8

[kienkzz]

MPD (337MB)

https://vod-npd2.cdn.plus.nhk.jp/npd2/7fe1-0408/20240803/1273-1-3-093c1f072561b440e58abe1bd94b7a51/cenc/manifest_m6000.m3u8

thanks, but important is how to get the right key with this KID?

KID: dbac446da52e4d1488994c8af0aeaa7f

because 1 min version, full version and 1080p version have different KID so I can't decrypt it.
Can I use KID to get PSSH and get key after? Can I use same header for these version?
thanks for your link, seem it can be a nice trick for someone

[shellcmd]

i think at least chrome browser extension '篡改猴'（tampermonkey） or '暴力猴'（violentmonkey）+ eme logger will give you pssh directly

[kienkzz]

i think at least chrome browser extension '篡改猴'（tampermonkey） or '暴力猴'（violentmonkey）+ eme logger will give you pssh directly

the biggest problem for this step is eme logger only takes pssh from 1 min version. for full version or 1080p version, it can't. I don't have NHK+ account, and I need to sign a contract to NHK to watch this. Certainly I don't live in Japan.

[shellcmd]

then you can get the 1080p full m3u8 first, then download segement and get init.mp4, read pssh from init.mp4

AAAAPHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABwiFDA0MDgtMjAyNDA4MDMtMTI3My0wSOPclZsG

but if you have no nhk account, i think you cant get the full video key.

[kienkzz]

then you can get the 1080p full m3u8 first, then download segement and get init.mp4, read pssh from init.mp4

AAAAPHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABwiFDA0MDgtMjAyNDA4MDMtMTI3My0wSOPclZsG

but if you have no nhk account, i think you cant get the full video key.

yeah... also i need "authorization: Bearer" header to continue. seem it's so hard to decrypt.

[Frieren]

MPD (337MB)

https://vod-npd2.cdn.plus.nhk.jp/npd2/7fe1-0408/20240803/1273-1-3-093c1f072561b440e58abe1bd94b7a51/cenc/manifest_m6000.m3u8

thanks, but important is how to get the right key with this KID?

KID: dbac446da52e4d1488994c8af0aeaa7f

because 1 min version, full version and 1080p version have different KID so I can't decrypt it.
Can I use KID to get PSSH and get key after? Can I use same header for these version?
thanks for your link, seem it can be a nice trick for someone

key

0f845842260242419ee389657fb109c8:40a7a5f079515d493062ea994abb4ebf
dbac446da52e4d1488994c8af0aeaa7f:a760dd0a4969599c4bd31cff7d2f5ad7
c448ad555fbc44f790c87d49fc4c9728:f65f4b66c06fc26fa6fbed6e5405bdc2

[kienkzz]

key

0f845842260242419ee389657fb109c8:40a7a5f079515d493062ea994abb4ebf
dbac446da52e4d1488994c8af0aeaa7f:a760dd0a4969599c4bd31cff7d2f5ad7
c448ad555fbc44f790c87d49fc4c9728:f65f4b66c06fc26fa6fbed6e5405bdc2

Thanks for your help, can I ask some questions?
When you get these key, do you need account to do that?
Header Authorization Bearer need to use 1 min ver to get PSSH or use another one?

[Frieren]

key

0f845842260242419ee389657fb109c8:40a7a5f079515d493062ea994abb4ebf
dbac446da52e4d1488994c8af0aeaa7f:a760dd0a4969599c4bd31cff7d2f5ad7
c448ad555fbc44f790c87d49fc4c9728:f65f4b66c06fc26fa6fbed6e5405bdc2

Thanks for your help, can I ask some questions?
When you get these key, do you need account to do that?
Header Authorization Bearer need to use 1 min ver to get PSSH or use another one?

I didn't use any accounts. I used Widevine L3 Guesser Extension extension to get the keys. I also didn't try EME logger.

[Novia]

Kid, it's not working.

[Attachment 81321 - Click to enlarge]

[kienkzz]

I didn't use any accounts. I used Widevine L3 Guesser Extension extension to get the keys. I also didn't try EME logger.

Thanks for your answer, but it's so weird... it still show old key which I do first


[Attachment 81323 - Click to enlarge]

Edit: I tried to use Bitmovin DRM but it can't load PSSH so I can't do anything.

[Frieren]

I didn't use any accounts. I used Widevine L3 Guesser Extension extension to get the keys. I also didn't try EME logger.

Thanks for your answer, but it's so weird... it still show old key which I do first


[Attachment 81323 - Click to enlarge]

Edit: I tried to use Bitmovin DRM but it can't load PSSH so I can't do anything.

PSSH can be extracted from init mp4


hex

00 00 00 3C 70 73 73 68 00 00 00 00 ED EF 8B A9 79 D6 4A CE A3 C8 27 DC D5 1D 21 ED 00 00 00 1C 22 14 30 34 30 38 2D 32 30 32 34 30 38 30 33 2D 31 32 37 33 2D 30 48 E3 DC 95 9B 06

convert hex to base64 = PSSH

AAAAPHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABwiFDA0MDgtMjAyNDA4MDMtMTI3My0wSOPclZsG

[kienkzz]

Now I know I can't edit anything in Widevine L3 Guesser 2024. It just takes some information and fill them and I can't edit.

I've typed Manifest URL and License URL like this pic but the first time it didn't show PSSH so output said "Data must not be empty"


[Attachment 81373 - Click to enlarge]


[Attachment 81374 - Click to enlarge]

But I didn't know what I did, PSSH was showed and right license URL but it said error like this pic.


[Attachment 81375 - Click to enlarge]

Anyone can explain me these? And what I do next for get decryption key? Thanks for your help before.

[ripvw]

Now I know I can't edit anything in Widevine L3 Guesser 2024. It just takes some information and fill them and I can't edit.

I've typed Manifest URL and License URL like this pic but the first time it didn't show PSSH so output said "Data must not be empty"


[Attachment 81373 - Click to enlarge]


[Attachment 81374 - Click to enlarge]

But I didn't know what I did, PSSH was showed and right license URL but it said error like this pic.


[Attachment 81375 - Click to enlarge]

Anyone can explain me these? And what I do next for get decryption key? Thanks for your help before.

Remember to play the video first before using the extension.
The URL MPD is from bitmovin, and you are trying to decrypt NHK+, right? They are not relevant. Just delete it.
And I still believe that an NHK+ account is necessary to get the keys for 1080p full videos.

[kienkzz]

Remember to play the video first before using the extension.
The URL MPD is from bitmovin, and you are trying to decrypt NHK+, right? They are not relevant. Just delete it.
And I still believe that an NHK+ account is necessary to get the keys for 1080p full videos.

I don't know why @Frieren can get the key without account, even though he/she said he/she doesn't use EME Logger.

[kienkzz]

Kid, it's not working.

[Attachment 81321 - Click to enlarge]

It's so weird, why Frieren can get the key without EME Logger?

[ripvw]

Remember to play the video first before using the extension.
The URL MPD is from bitmovin, and you are trying to decrypt NHK+, right? They are not relevant. Just delete it.
And I still believe that an NHK+ account is necessary to get the keys for 1080p full videos.

I don't know why @Frieren can get the key without account, even though he/she said he/she doesn't use EME Logger.

On that day, I tried to get the keys with account+EME logger and finally made it. Then I found that guy had already posted the keys here and felt incredible.

[2nHxWW6GkN1l916N3ayz8HQoi]

On that day, I tried to get the keys with account+EME logger and finally made it.

So, after all, it's impossible to get full keys without paid account?

[ripvw]

So, after all, it's impossible to get full keys without paid account?

The "authorization: Bearer" header matters. In fact, NHK+ is different from NHK on-demand, it's free!
Registration is not difficult (need JP VPN).

[kienkzz]

Ok, I can create account with 1-month free, then it needs receipt like NHK TV, seem I need to create multi-account for watching free. I'll use StreamFab to download them. But I prefer CleverGet because it doesn't have error from subtitles (timing is exactly than StreamFab).
Btw, I've download video from NHK+ with StreamFab and CleverGet and I see 2 videos in 1 content have different size.
I don't know these videos has different from quality or it's same?
Cleverget
#アニメ - アニメ　忍たま乱.mp4
StreamFab
アニメ　忍たま乱太郎「照.mp4

[2nHxWW6GkN1l916N3ayz8HQoi]

I don't know these videos has different from quality or it's same?

Same res but look at video bitrate

General
Complete name : アニメ　忍たま乱太郎「照.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 261 MiB
Duration : 9 min 59 s
Overall bit rate mode : Variable
Overall bit rate : 3 656 kb/s
Frame rate : 29.970 FPS
Movie name : アニメ　忍たま乱太郎「照星の特別指導の段」
Performer : 【声】高山みなみ，田中真弓，一龍斎貞友，大塚明夫，関俊彦，浦山迅，巴菁子，飯塚昭三，【原作】尼子騒兵 衛，【脚本】浦沢義雄
Description : 虎若（とらわか）と四年生の田村三木ヱ門（たむらみきえもん）先輩が、照星（しょうせい）さんから火縄銃（ ひなわじゅう）の特別指導をうけることになった。照星さんに教えてもらえると、うれしい虎若。だが、なぜか 照星さんは田村先輩ばかり指導して、虎若になかなか教えてくれないのだ。
Writing application : Lavf60.3.100
Cover : Yes
Comment : https://plus.nhk.jp/watch/st/e1_2024081409967?playlist_id=e6503c77-9a3b-44ac-9e63-b866...subfolder=true

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 9 min 59 s
Bit rate mode : Variable
Bit rate : 3 500 kb/s
Maximum bit rate : 5 360 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.056
Stream size : 250 MiB (96%)
Codec configuration box : avcC

Audio
ID : 3
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 9 min 59 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 9.14 MiB (4%)
Title : main
Language : Japanese
Default : Yes
Alternate group : 1

Text
ID : 4
Format : Timed Text
Muxing mode : sbtl
Codec ID : tx3g
Duration : 8 min 50 s
Bit rate mode : Variable
Bit rate : 319 b/s
Frame rate : 1.470 FPS
Stream size : 20.7 KiB (0%)
Title : Japanese
Language : Japanese
Default : Yes
Forced : No
Alternate group : 3
Count of events : 389

---

General
Complete name : #アニメ - アニメ　忍たま乱.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 115 MiB
Duration : 9 min 59 s
Overall bit rate mode : Variable
Overall bit rate : 1 609 kb/s
Frame rate : 30.000 FPS
Movie name : #アニメ - アニメ 忍たま乱太郎「照星の特別指導の段」
Description : 虎若（とらわか）と四年生の田村三木ヱ門（たむらみきえもん）先輩が、照星（しょうせい）さんから火縄銃（ ひなわじゅう）の特別指導をうけることになった。照星さんに教えてもらえると、うれしい虎若。だが、なぜか 照星さんは田村先輩ばかり指導して、虎若になかなか教えてくれないのだ。
Writing application : Lavf58.20.100
Cover : Yes

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 9 min 59 s
Bit rate : 1 341 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.022
Stream size : 95.8 MiB (83%)
Writing library : x264 core 157 r2935 545de2f
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=6 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Codec configuration box : avcC

Audio #1
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 9 min 59 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 9.14 MiB (8%)
Default : Yes
Alternate group : 1

Audio #2
ID : 3
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 9 min 59 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 9.14 MiB (8%)
Default : No
Alternate group : 1

Text
ID : 4
Format : Timed Text
Muxing mode : sbtl
Codec ID : tx3g
Duration : 9 min 56 s
Bit rate mode : Variable
Bit rate : 274 b/s
Frame rate : 0.686 FPS
Stream size : 19.9 KiB (0%)
Language : Japanese
Default : Yes
Forced : No
Alternate group : 3
Count of events : 389

[kienkzz]

Same res but look at video bitrate

Video downloaded from CleverGet is 540p? I see the same bitrate when download with 540p.

[2nHxWW6GkN1l916N3ayz8HQoi]

What? Have you read the reports? They're both 1080p but one has high bitrate (hence the doubled high file size). The report was for the 2 attachment videos you posted in #26

[kienkzz]

What? Have you read the reports? They're both 1080p but one has high bitrate (hence the doubled high file size). The report was for the 2 attachment videos you posted in #26

i don't know why I download same source but has different bitrate.