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Audio/video stream recording forums (http://stream-recorder.com/forum/index.php)
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Record Pluzz.fr from linux

 (http://stream-recorder.com/forum/showthread.php?t=11408)

karlo2105 04-19-2012 04:40 PM

Re: Record Pluzz.fr from linux


 
TVO can download Pluzz videos and so many other catchup. It's designed for Windows but it also works on linux through Wine. ;-)

bibichouchou 04-20-2012 03:17 AM

Re: Record Pluzz.fr from linux


 
Hi everyone,

I apologize but I was away from internet those last days so I could not answer...

KSV you are bringing wonderful news. Thanks for spending time on this problem. Of course, I am still happy to share the joining method. As i told you, it is not "my" method and it is coming from the package pluzzdl, developed by chaoswizard and you can download it here:

http://code.google.com/p/tvdownloader/downloads/list

there is a discussion page on French ubuntu forums (i can give you the link if you can read French; and you will see that i brought my modest contribution :) ).

Shortly, you have to retrieve part of the FLV header from the manifest file. There are in general, 3 different video qualities and for each you have (part of) the FLV header encrypted (one can use the base64 python package to decode it).
Then you have to strip the first bytes of the fragments before concatenating them (see the Pluzzdl.py in the package I pointed for more details). Let me know if you don't find the code snippet... I reassure you I don't want to broadcast it on my webpage. Besides, i don't have time to have a webpage :D

About TVO and Captvty, those are windows software and I have been unable to make them work on linux. And I don't think I am the only one.

Wishing you a nice end of week.

KSV 04-20-2012 11:42 AM

Re: Record Pluzz.fr from linux


 
Quote:
Originally Posted by bibichouchou (Post 43725)
Shortly, you have to retrieve part of the FLV header from the manifest file. There are in general, 3 different video qualities and for each you have (part of) the FLV header encrypted (one can use the base64 python package to decode it).
Then you have to strip the first bytes of the fragments before concatenating them (see the Pluzzdl.py in the package I pointed for more details). Let me know if you don't find the code snippet... I reassure you I don't want to broadcast it on my webpage. Besides, i don't have time to have a webpage :D
i was aware of flv header and base64 decoding of bootstrap info (it's just Metadata tag anyway) but i was hoping for proper decoder for mp4 boxes to recover flv data. script just uses a single regexp to find mdat+79 offset and copies all remaining data. it's very crude way to parse things but whatever works is good enough to be of some use :D

so here is the procedure to retrieve secured fragments. each fragment request is accompanied by four security parameters.
Code:
http://ftvodhdsecz-f.akamaihd.net//z/streaming-adaptatif/2012/S16/J4/62158719-20120419-,398,632,934,k.mp4.csmil/1_e8775c2b4acd5464_Seg1-Frag1?
pvtoken=st=0000000000~exp=9999999999~acl=%2f%2a~data=ZXhwPTEzMzUwMDgzNzJ+YWNsPSUyZip+ZGF0YT1wdmMsc35obWFjPWU0NjFkYjYyZjQ5ZjgzYzZiMGQxYjk4NjNmZjBmZmY1MjE0MTAyOThkZGQyMzVmOGVjNGM4ZmE4MGI0NGJiNDY=!3fPHzcjMxiTmRj5AdV0bhzgjjSjk2PqUMBzFxgPEPF4=~hmac=4A196FC74660DCDBD39045827F28007296177A0FD25B36A6AB4359C69FDA82E3&
hdntl=exp=1335008372~acl=/z/streaming-adaptatif/2012/S16/J4/62158719-20120419-*~data=hdntl~hmac=21194bf78c5f22813096932f4db484890087fc34ee5aad9b2449ee1044b788d4&
hdnea=exp=1334922570~acl=/z/streaming-adaptatif/2012/S16/J4/62158719-20120419-*~hmac=48fe0fa3a50155abb1aa96c472d81b58b6d497fd01c7f79744e099643888dfee&
als=0,0.1,0,1,0,NaN,0,0,0,18,f,0,2759.58,f,s,DUNCYBSALHLK,2.6.9,18
als parameter is useless and can be omitted. it's just bandwidth metering and analytics stuff. hdnea and hdntl parameters can be easily retrieved from server.

hdnea:
Code:
http://hdfauth.francetv.fr/esi/urltokengen2.html?url=/z/streaming-adaptatif/2012/S16/J4/62158719-20120419-,398,632,934,k.mp4.csmil/manifest.f4m
Code:
http://ftvodhdsecz-f.akamaihd.net//z/streaming-adaptatif/2012/S16/J4/62158719-20120419-,398,632,934,k.mp4.csmil/manifest.f4m?hdnea=exp=1334942910~acl=%2fz%2fstreaming-adaptatif%2f2012%2fS16%2fJ4%2f62158719-20120419-*~hmac=6eadf2821bfd4b55663fc7f09e3508135d274a85960604f3d9dd7d646ed47ad0
hdntl:
Code:
<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns="http://ns.adobe.com/f4m/1.0" xmlns:akamai="uri:akamai.com/f4m/1.0">
  <akamai:bw>1000</akamai:bw>
  <id>/streaming-adaptatif/2012/S16/J4/62158719-20120419-,398,632,934,k.mp4.csmil_0</id>
  <streamType>recorded</streamType>
  <duration>2759.575</duration>
  <streamBaseTime>0.000</streamBaseTime>
  <pv-2.0>ZXhwPTEzMzUwMjcwNjN+YWNsPSUyZip+ZGF0YT1wdmMsc35obWFjPTBhNjViYjAyOTAwZGYxZDg2MmRmZTkyZWUzMzkwZTNkZjA2ZWZjMTE1OTQ5MDBlOTYxZmI1NDVjNjdhNDgxMTA=;hdntl=exp=1335027063~acl=%2fz%2fstreaming-adaptatif%2f2012%2fS16%2fJ4%2f62158719-20120419-*~data=hdntl~hmac=fa73dd53c60993d1bc0234b0a71697dd2e9b71afe305319620f8569daafc5e69</pv-2.0>
  <bootstrapInfo profile="named" id="bootstrap_0">AAAAi2Fic3QAAAAAAAAAAQAAAAPoAAAAAAAqG5cAAAAAAAAAAAAAAAAAAQAAABlhc3J0AAAAAAAAAAABAAAAAQAAAcwBAAAARmFmcnQAAAAAAAAD6AAAAAADAAAAAQAAAAAAAAAAAAAXcAAAAcwAAAAAACoF0AAAFccAAAAAAAAAAAAAAAAAAAAAAA==</bootstrapInfo>
  <bootstrapInfo profile="named" id="bootstrap_1">AAAAi2Fic3QAAAAAAAAAAQAAAAPoAAAAAAAqG5cAAAAAAAAAAAAAAAAAAQAAABlhc3J0AAAAAAAAAAABAAAAAQAAAcwBAAAARmFmcnQAAAAAAAAD6AAAAAADAAAAAQAAAAAAAAAAAAAXcAAAAcwAAAAAACoF0AAAFccAAAAAAAAAAAAAAAAAAAAAAA==</bootstrapInfo>
  <bootstrapInfo profile="named" id="bootstrap_2">AAAAi2Fic3QAAAAAAAAAAQAAAAPoAAAAAAAqG5cAAAAAAAAAAAAAAAAAAQAAABlhc3J0AAAAAAAAAAABAAAAAQAAAcwBAAAARmFmcnQAAAAAAAAD6AAAAAADAAAAAQAAAAAAAAAAAAAXcAAAAcwAAAAAACoF0AAAFccAAAAAAAAAAAAAAAAAAAAAAA==</bootstrapInfo>
  <media bitrate="301" url="0_e8775c2b4acd5464_" bootstrapInfoId="bootstrap_0">
    <metadata>AgAKb25NZXRhRGF0YQgAAAAMAAhkdXJhdGlvbgBApY8mZmZmZgAFd2lkdGgAQHQAAAAAAAAABmhlaWdodABAZgAAAAAAAAANdmlkZW9kYXRhcmF0ZQBAboAAAAAAAAAJZnJhbWVyYXRlAEA5AAAAAAAAAAx2aWRlb2NvZGVjaWQAQBwAAAAAAAAADWF1ZGlvZGF0YXJhdGUAQEyAAAAAAAAAD2F1ZGlvc2FtcGxlcmF0ZQBB5YiAAAAAAAAPYXVkaW9zYW1wbGVzaXplAEAwAAAAAAAAAAZzdGVyZW8BAQAMYXVkaW9jb2RlY2lkAEAkAAAAAAAAAAhmaWxlc2l6ZQBBmMPPTAAAAAAAAw==</metadata>
  </media>
  <media bitrate="572" url="1_e8775c2b4acd5464_" bootstrapInfoId="bootstrap_1">
    <metadata>AgAKb25NZXRhRGF0YQgAAAAMAAhkdXJhdGlvbgBApY8mZmZmZgAFd2lkdGgAQIAAAAAAAAAABmhlaWdodABAcgAAAAAAAAANdmlkZW9kYXRhcmF0ZQBAgBgAAAAAAAAJZnJhbWVyYXRlAEA5AAAAAAAAAAx2aWRlb2NvZGVjaWQAQBwAAAAAAAAADWF1ZGlvZGF0YXJhdGUAQEyAAAAAAAAAD2F1ZGlvc2FtcGxlcmF0ZQBB5YiAAAAAAAAPYXVkaW9zYW1wbGVzaXplAEAwAAAAAAAAAAZzdGVyZW8BAQAMYXVkaW9jb2RlY2lkAEAkAAAAAAAAAAhmaWxlc2l6ZQBBp4Fu5AAAAAAAAw==</metadata>
  </media>
  <media bitrate="828" url="2_e8775c2b4acd5464_" bootstrapInfoId="bootstrap_2">
    <metadata>AgAKb25NZXRhRGF0YQgAAAAMAAhkdXJhdGlvbgBApY8mZmZmZgAFd2lkdGgAQIYAAAAAAAAABmhlaWdodABAeQAAAAAAAAANdmlkZW9kYXRhcmF0ZQBAiBgAAAAAAAAJZnJhbWVyYXRlAEA5AAAAAAAAAAx2aWRlb2NvZGVjaWQAQBwAAAAAAAAADWF1ZGlvZGF0YXJhdGUAQEyAAAAAAAAAD2F1ZGlvc2FtcGxlcmF0ZQBB5YiAAAAAAAAPYXVkaW9zYW1wbGVzaXplAEAwAAAAAAAAAAZzdGVyZW8BAQAMYXVkaW9jb2RlY2lkAEAkAAAAAAAAAAhmaWxlc2l6ZQBBsQYsjwAAAAAAAw==</metadata>
  </media>
</manifest>
blue part is hdntl parameter and red part is used to generate pvtoken.

pvtoken:
now following is the sample php function to generate pvtoken and sign the request.
Code:
<?php
  echo "\nKSV AkamaiSecureHDS Token Generator\n\n";
  $key    = pack("H*", "bd938d5ee6d9f42016f9c56577b6fdcf415fe4b184932b785ab32bcadc9bb592");
  $pvtoken = base64_encode(pack("H*", "ddf3c7cdc8ccc624e6463e40755d1b8738238d28e4d8fa94301cc5c603c43c5e"));
  $pv_20  = "ZXhwPTEzMzUwMjcwNjN+YWNsPSUyZip+ZGF0YT1wdmMsc35obWFjPTBhNjViYjAyOTAwZGYxZDg2MmRmZTkyZWUzMzkwZTNkZjA2ZWZjMTE1OTQ5MDBlOTYxZmI1NDVjNjdhNDgxMTA=";
  $data    = "st=0000000000~exp=9999999999~acl=%2f%2a~data=" . $pv_20 . "!" . $pvtoken;
  $signed  = hash_hmac("sha256", $data, $key);
  echo "pvtoken=$data~hmac=$signed";
?>
in my quest to solve it the hardest part was to recover the encryption key and algorithm used to sign the pvtoken verification response. blue part is sha256 hash of decompressed player swf. if they upgrade their player you also need to change this. green part is the hmac-sha256 key used to sign the request.

bibichouchou 04-20-2012 05:36 PM

Re: Record Pluzz.fr from linux


 
Hello KSV,

Awesome ! You are marvellous. Thank you for your code snippet and the explanations. I am sorry that the joining method do not meet your expectations. It is true that it is kind of an empirical solution :D but as you said, it works so it is useful.

Your knowledge is impressive. Thanks again for this and also for the playtv script that I use from time to time.

Have a nice weekend!

saadeva 04-21-2012 01:12 PM

Re: Record Pluzz.fr from linux


 
Nothing works on linux so far. That's why I'm no much interested in this thread.

KSV 04-21-2012 11:53 PM

Re: Record Pluzz.fr from linux


 
if you wanna get this implemented in pluzzdl then point the developer of pluzzdl to this thread.

bibichouchou 04-22-2012 06:47 AM

Re: Record Pluzz.fr from linux


 
Hello everyone,

I just sent an email to the creator of pluzzdl to point him this thread and KSV's nice solution.

Many thanks, once again!

KSV 08-09-2012 02:00 AM

Re: Record Pluzz.fr from linux


 
Quote:
Originally Posted by Velcro (Post 50677)
KSV, will you be able to recover the green key from this post: http://stream-recorder.com/forum/sho...1&postcount=13 in order to make pluzzdl to work again?
Yeah they have blocked the old key. they have also moved the token generation function inside Alchemy VM (same as in Akamai DRM scheme) which makes it very hard to recover new encryption key.

you can use AdobeHDS.php script because you only need to copy the auth string generated by player. alternatively they are also providing Apple HLS (.m3u8) streams which you can easily download or play with FFMpeg or FFMpeg based players e.g FFPlay, VLC etc.

gordi 11-15-2012 07:40 AM

Re: Record Pluzz.fr from linux


 
Hi. I'm trying to get pluzz stuff too.

done :
.running firefox debugger to find manifest
.run the hdfauth manifest page which returns the full manifest adress with authentification stuff

so now I suppose I just have to give this f4m file with included auth (hdntl/hmac) stuff to this adobeHDS.php script (which I never used)... except I'm too dumb to make it work.
as for adobeHDS documentation, the proper switch usage links to invalid pages .

Geethu 01-15-2015 08:37 AM

Re: Record Pluzz.fr from linux


 
Hello,
I have read the information about generating the pvtoken and hmac to request Akamai's secured content. But still I'am not able to calculate hmac since it requires signing key. Could anyone please elaborate how to calculate hmac and how to retrieve the signing key?
It would be of great help if I get a solution since I have been spending days for but still in vain.


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