getting srt file out of an encrypted stream

[Mirai]

Hello everyone.

This is the website(requires JPN VPN): https://plus.nhk.jp/watch/ch/g1

The Video I'm looking to download srt from (requires free registration, but it functions the same as the live stream in the first url): here

While I managed to decrypt the mp4 file from this video, yt-dlp didn't include the subs with the video, even though there is a mention of "stpp" in a line inside the manifest mpd file:

<Representation codecs="stpp" startWithSAP="1" mimeType="application/mp4" bandwidth="4096" id="4" />

I tried --list-subs on the mpd url but all I got is "Language Formats: und mp4. Whatever that means.
After searching for similar questions in the forum, I found that you can download the subs seperatly via this command:

yt-dlp --write-subs --external-downloader aria2c --allow-u "mpd" --output sub.xml

it worked, the subtitle lines are there, but the xml file is a mess inside and cannot be opened via SubtitleEdit. However, when I view the video using TubeDigger, it instantly recognises a srt file and downloads it for me, and sure enough, it's 100% working and can be opened with SE. And this is exactly why I created this thread, I'd like to know how to get that srt file.

If you want to test the mpd file yourself:

mpd: https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0021/cenc/fmp4/manifest.mpd?start=2022-03-...03-06-16:45:06
key: 0cd6e5a09b904ea59e1b43dfc5479c2e:080f0ad6d6fe59552 643f09bd05c754d

My theory is that the srt file is being handled outside the mpd file, via a plugin of sorts. It doesn't show up in the Network Traffic but when you highlight the subs and click inspect element them this is what I see:


jbsubtitlelibrary.js is also present in the Network Traffic, no idea if it could be related.

are there other stream services that handle the subs of a stream with a similar approach?

[[ss]vegeta]

If you can use Tubedigger why do you need an alternative?
This is a pain in the ass for registering, many steps, sometimes translate doesn't show up...
Send login details via private message.

[Attachment 63760 - Click to enlarge]

[Mirai]

If you can use Tubedigger why do you need an alternative?
This is a pain in the ass for registering, many steps, sometimes translate doesn't show up...
Send login details via private message.

[Attachment 63760 - Click to enlarge]

Sorry you had to go through this painful process, I should've just provided the credentials earlier. TubeDigger still doesn't work on all videos for some reason, especially during live streamed documentaries that can never be re-watched again, they still have subtitles embedded in them. PM Sent.

[stillbeatin]

TubeDigger is converting subtitles to SubRips internally.

Using the MPD link you gave,

yt-dlp --no-warnings --allow-unplayable-formats --downloader aria2c --downloader-args "aria2c:--http-accept-gzip=true" --no-mtime --write-subs --skip-download -k --fixup never --force-generic-extractor "https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0021/cenc/fmp4/manifest.mpd?start=2022-03-06-16:20:06&end=2022-03-06-16:45:06"

will download the subtitles and save it as an mp4 with the stpp subtitles inside.

Subtitle Edit can open this mp4 without an issue. All you need to do after that is go to Synchronization -> Adjust all times and put the start time of the first line in, click show earlier and then save as an srt.

[Mirai]

TubeDigger is converting subtitles to SubRips internally.

Using the MPD link you gave,

yt-dlp --no-warnings --allow-unplayable-formats --downloader aria2c --downloader-args "aria2c:--http-accept-gzip=true" --no-mtime --write-subs --skip-download -k --fixup never --force-generic-extractor "https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0021/cenc/fmp4/manifest.mpd?start=2022-03-06-16:20:06&end=2022-03-06-16:45:06"

will download the subtitles and save it as an mp4 with the stpp subtitles inside.

Subtitle Edit can open this mp4 without an issue. All you need to do after that is go to Synchronization -> Adjust all times and put the start time of the first line in, click show earlier and then save as an srt.

Countless of hours researching and I have never came across the fact that an mp4 can be it's own subtitle ! SE is truly a beast!
Thank you so much for the reply, now that the main question has been addressed, I'm still left with another. How do I apply the same ytdlp code on a livestream that has multiple mpd segments? Using the same command will only download about 6 seconds long worth of subs then it stops.

[stillbeatin]

How do I apply the same ytdlp code on a livestream that has multiple mpd segments? Using the same command will only download about 6 seconds long worth of subs then it stops.

Sorry, I'm not sure, as I haven't had to deal with that. If in your browser's developer tools network tab, you're seeing multiple manifest.mpd requests with different timestamps in the addresses with six seconds' difference between them, you might be able to have yt-dlp batch download them and then merge them together with Subtitle Edit.

[Mirai]

How do I apply the same ytdlp code on a livestream that has multiple mpd segments? Using the same command will only download about 6 seconds long worth of subs then it stops.

Sorry, I'm not sure, as I haven't had to deal with that. If in your browser's developer tools network tab, you're seeing multiple manifest.mpd requests with different timestamps in the addresses with six seconds' difference between them, you might be able to have yt-dlp batch download them and then merge them together with Subtitle Edit.

I have tried to batch download them with yt-dlp, the problem is that it downloads the first mpd but when it tries to download the second one I get "manifest.f0.mp4 has already been downloaded". The website itself keeps updating the mpd file every 6 seconds so the name is still the same for yt-dlp. Is there a way to have yt-dlp download the mpd segments but also allow copies of the same mpd file instead of ignoring them? For example: (manifest.f0.mp4, manifest.f0.mp4 Copy (1), manifest.f0.mp4 Copy (2).)

EDIT: Here's how the network traffic looks like when watching the stream:

[Mirai]

How do I apply the same ytdlp code on a livestream that has multiple mpd segments? Using the same command will only download about 6 seconds long worth of subs then it stops.

Sorry, I'm not sure, as I haven't had to deal with that. If in your browser's developer tools network tab, you're seeing multiple manifest.mpd requests with different timestamps in the addresses with six seconds' difference between them, you might be able to have yt-dlp batch download them and then merge them together with Subtitle Edit.

I have tried to batch download them with yt-dlp, the problem is that it downloads the first mpd but when it tries to download the second one I get "manifest.f0.mp4 has already been downloaded". The website itself keeps updating the mpd file every 6 seconds so the name is still the same for yt-dlp. Is there a way to have yt-dlp download the mpd segments but also allow copies of the same mpd file instead of ignoring them? For example: (manifest.f0.mp4, manifest.f0.mp4 Copy (1), manifest.f0.mp4 Copy (2).)

EDIT: Here's how the network traffic looks like when watching the stream:

I realize that you can specify the output name by using the command --output. The only question remaining is how to implement this command to have it rename each one of the URLs inside the batch txt file? simply adding the command --output after every url didn't work.

[ElCap]

I realize that you can specify the output name by using the command --output. The only question remaining is how to implement this command to have it rename each one of the URLs inside the batch txt file? simply adding the command --output after every url didn't work.

how about --autonumber with --autonumber-start?

autonumber (numeric): Number that will be increased with each download, starting at --autonumber-start

https://github.com/yt-dlp/yt-dlp#output-template

[nimrahwt]

I am also trying to dl a video from NHK+
https://plus.nhk.jp/watch/st/e1_2022033011401?t=5

I found the MPD link, but where can I find the key to dl it ? and how do I use the key in yt-dlp ?
https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0031/cenc/fmp4/manifest.mpd?start=2022-03-...03-30-14:20:06

yt-dlp --no-warnings --allow-unplayable-formats --downloader aria2c --downloader-args "aria2c:--http-accept-gzip=true" --no-mtime --write-subs --skip-download -k --fixup never --force-generic-extractor "https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0021/cenc/fmp4/manifest.mpd?start=2022-03-06-16:20:06&end=2022-03-06-16:45:06"

this probably downloads the subs (64.7kb) but how do I download the video + audio + decrypt?
write-audio / write-video does not work

edit: MPD

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<MPD minimumUpdatePeriod="PT03S" ns1:schemaLocation="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" minBufferTime="PT03S" mediaPresentationDuration="PT20M" xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance" availabilityStartTime="2022-03-30T14:00:07Z" xmlns:cenc="urn:mpeg:cenc:2013" maxSegmentDuration="PT06S" xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:mspr="urn:microsoft:playready" type="static" timeShiftBufferDepth="PT05M">
  <BaseURL>https://vod-cdn1-origin1.hsk.nhk.jp/</BaseURL>
  <BaseURL>https://vod-cdn1-origin3.hsk.nhk.jp/</BaseURL>
  <BaseURL>https://vod-cdn1-origin2.hsk.nhk.jp/</BaseURL>
  <Period start="PT0S" id="1">
    <AdaptationSet segmentAlignment="true" id="0">
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" />
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED" value="2.0">
        <cenc:pssh>AAAAWXBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADkSEB9hGVQZ/0XSgx/O72GXSmMaDXdpZGV2aW5lX3Rlc3QiEMxC+eyoV0dDtQoAMdYbRmxI49yVmwY=</cenc:pssh>
      </ContentProtection>
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:9A04F079-9840-4286-AB92-E65BE0885F95" value="2.0">
        <mspr:pro>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</mspr:pro>
      </ContentProtection>
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main" />
      <SegmentTemplate timescale="90000" initialization="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/init.mp4?start_time=2022-03-30-14:00:06" media="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/$Time$.m4s">
        <SegmentTimeline>
<S t="148375476634217" d="540000"/>
<S t="148375477080000" d="540000" r="198" />
</SegmentTimeline>
      </SegmentTemplate>
      <Representation codecs="mp4a.40.2" startWithSAP="1" mimeType="audio/mp4" bandwidth="76800" id="1" />
    </AdaptationSet>
    <AdaptationSet segmentAlignment="true" id="1">
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" />
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED" value="2.0">
        <cenc:pssh>AAAAWXBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADkSEB9hGVQZ/0XSgx/O72GXSmMaDXdpZGV2aW5lX3Rlc3QiEMxC+eyoV0dDtQoAMdYbRmxI49yVmwY=</cenc:pssh>
      </ContentProtection>
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:9A04F079-9840-4286-AB92-E65BE0885F95" value="2.0">
        <mspr:pro>dgMAAAEAAQBsAzwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0AbABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzAG8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQBhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZAEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA+ADwAQQBMAEcASQBEAD4AQQBFAFMAQwBUAFIAPAAvAEEATABHAEkARAA+ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsASQBEAD4AVgBCAGwAaABIAC8AOABaADAAawBXAEQASAA4ADcAdgBZAFoAZABLAFkAdwA9AD0APAAvAEsASQBEAD4APABMAEEAXwBVAFIATAA+AGgAdAB0AHAAOgAvAC8AcABsAGEAeQByAGUAYQBkAHkALgBkAHIAbQBrAGUAeQBzAGUAcgB2AGUAcgAuAGMAbwBtAC8AcABsAGEAeQByAGUAYQBkAHkALwByAGkAZwBoAHQAcwBtAGEAbgBhAGcAZQByAC4AYQBzAG0AeAA8AC8ATABBAF8AVQBSAEwAPgA8AEMAVQBTAFQATwBNAEEAVABUAFIASQBCAFUAVABFAFMAIAB4AG0AbABuAHMAPQAiACIAPgA8AEMATwBOAFQARQBOAFQASQBEAD4AQwBDADQAMgBGADkARQBDAC0AQQA4ADUANwAtADQANwA0ADMALQBCADUAMABBAC0AMAAwADMAMQBEADYAMQBCADQANgA2AEMAPAAvAEMATwBOAFQARQBOAFQASQBEAD4APAAvAEMAVQBTAFQATwBNAEEAVABUAFIASQBCAFUAVABFAFMAPgA8AEMASABFAEMASwBTAFUATQA+AHMAMQA5AGoAOAAxAEEAawAyAE0AdwA9ADwALwBDAEgARQBDAEsAUwBVAE0APgA8AC8ARABBAFQAQQA+ADwALwBXAFIATQBIAEUAQQBEAEUAUgA+AA==</mspr:pro>
      </ContentProtection>
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main" />
      <SegmentTemplate timescale="90000" initialization="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/init.mp4?start_time=2022-03-30-14:00:06" media="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/$Time$.m4s">
        <SegmentTimeline>
<S t="148375476634217" d="540000"/>
<S t="148375477080000" d="540000" r="198" />
</SegmentTimeline>
      </SegmentTemplate>
      <Representation codecs="mp4a.40.2" startWithSAP="1" mimeType="audio/mp4" bandwidth="76800" id="2" />
    </AdaptationSet>
    <AdaptationSet segmentAlignment="true" id="2">
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" />
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED" value="2.0">
        <cenc:pssh>AAAAWXBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAADkSEB9hGVQZ/0XSgx/O72GXSmMaDXdpZGV2aW5lX3Rlc3QiEMxC+eyoV0dDtQoAMdYbRmxI49yVmwY=</cenc:pssh>
      </ContentProtection>
      <ContentProtection cenc:default_KID="1F611954-19FF-45D2-831F-CEEF61974A63" schemeIdUri="urn:uuid:9A04F079-9840-4286-AB92-E65BE0885F95" value="2.0">
        <mspr:pro>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</mspr:pro>
      </ContentProtection>
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main" />
      <SegmentTemplate timescale="90000" initialization="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/init.mp4?start_time=2022-03-30-14:00:06" media="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/$Time$.m4s">
        <SegmentTimeline>
<S t="148375476632927" d="540000"/>
<S t="148375477080000" d="540000" r="198" />
</SegmentTimeline>
      </SegmentTemplate>
      <Representation width="960" height="540" codecs="avc1.4d4028" startWithSAP="1" mimeType="video/mp4" bandwidth="1800000" id="0" />
      <Representation width="640" height="360" codecs="avc1.4d4028" startWithSAP="1" mimeType="video/mp4" bandwidth="921600" id="100" />
      <Representation width="448" height="252" codecs="avc1.4d401e" startWithSAP="1" mimeType="video/mp4" bandwidth="460800" id="200" />
      <Representation width="416" height="232" codecs="avc1.42c01e" startWithSAP="1" mimeType="video/mp4" bandwidth="230400" id="300" />
    </AdaptationSet>
    <AdaptationSet segmentAlignment="true" id="3">
      <Role schemeIdUri="urn:mpeg:dash:role:2011" value="main" />
      <SegmentTemplate timescale="90000" initialization="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/init.mp4?start_time=2022-03-30-14:00:06" media="catchup/api/v1/segment/0031/$RepresentationID$/fmp4/cenc/$Time$.m4s">
        <SegmentTimeline>
<S t="148375476632927" d="540000"/>
<S t="148375477080000" d="540000" r="198" />
</SegmentTimeline>
      </SegmentTemplate>
      <Representation codecs="stpp" startWithSAP="1" mimeType="application/mp4" bandwidth="4096" id="4" />
    </AdaptationSet>
  </Period>
</MPD>

[lomero]

need login

[nimrahwt]

sent!

I thought you only need the mpd link + the key in it to download it ��

[lomero]

1f61195419ff45d2831fceef61974a63:dfca31dd3bc2301666ed43a9532aaec3

[nimrahwt]

thanks, I figured it out how to download the video+ audio and decrypted it thanks to this thread
https://forum.videohelp.com/threads/403186-Need-help-downloading-a-tv-show

but how did you get the key? there will be more episodes, and I don't want to always ask you

[lomero]

yes all info is here: https://forum.videohelp.com/threads/403186-Need-help-downloading-a-tv-show#post2631994

to download put this code for yt-dlp

yt-dlp --allow-u "https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0031/cenc/fmp4/manifest.mpd?start=2022-03-30-14:00:06&end=2022-03-30-14:20:06"

[nimrahwt]

yep ^that also works

yt-dlp --allow-u --external-downloader aria2c -f bv,ba "https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0031/cenc/fmp4/manifest.mpd?start=2022-03-31-14:00:06&end=2022-03-31-14:20:06"

instead

Episode 2 is up, guess there is another key?
https://plus.nhk.jp/watch/st/e1_2022033112147
https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0031/cenc/fmp4/manifest.mpd?start=2022-03-...03-31-14:20:06

I dont't see how to get the PlayReady key there

[lomero]

on this case the key is the same at post#13

for this new link replace to my string above your link on yt-dlp to download

https://vod-cdn1-origin1.hsk.nhk.jp/catchup/0031/cenc/fmp4/manifest.mpd?start=2022-03-31-14:00:06&end=2022-03-31-14:20:06

[nimrahwt]

small update:
NHK+ changed from MPD to M3U8

instead of aria2c you can just use N_m3u8DL-CLI, its much faster