Audio/video stream recording forums

Attention Visitor:
You may have to register or log in before you can post:
  • Click the register link to sign up.
  • Registered members please fill in the form below and click the "Log in" button.
To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Audio/video stream recording forums > Streaming media recording forum > rtmpdump
Register FAQ Members List Calendar Mark Forums Read

Reply Post New Thread
 
Thread Tools Display Modes
  #1  
Old 08-12-2014, 12:30 PM
some one some one is offline
Junior Member
 
Join Date: Aug 2014
Posts: 1
some one is on a distinguished road
Default

RTMPT version 6 ?


Hi there,

I've bought a movie on VOD website (vodeo<dot>tv [FR]) and while watching it, I recorded it with tcpdump (referred to as [V]).
Now, my challenge is to extract the video data from the capture (.pcap) file.
I used chaosreader to extract the payload of each packet.
Now, I have many .data files and I need to find a way to extract/reassemble the FLV data.

I used wireshark and found that RTMPT was the protocol used to exchange data.
I first began studying RTMP protocol and read rtmpdump source code but there are several differences :
- rtmpdump doesn't send a "POST /fcs/ident2" (optional ?)
[then both send a "POST open/1" and the response is the <session id>]
- rtmpdump sends a "POST /send/<session id>/0" while [V] start with a "POST /iddle/<session id>/0" and then a "POST /send/<session id>/1" (idle command seem related to polling interval so uninteresting and is always 0x01 or 0x00)

I understand the first send command as the first part of the handshake (C0 and C1).
- for rtmpdump, C0 = 0x03 and C1 is 4 bytes for 'time' reference then 4 0x00 bytes then random bytes until the end
- for [V], C0 = 0x06 and C1 = 2 0x00 bytes then random bytes

And for S0 and S1, there are more differences :
- for rtmpdump, S0 should be 0x03 or 0x06 and S1 is 4 bytes for server time then 4 bytes for Flash Media Server version then random bytes
- for [V], S0 is 0x01 (???) followed by 0x06 then 4 (time ?) bytes then 0x03 0x00 0x02 0x01 (Flash Media Server version ?) then random bytes

I guess 'version' 6 is completly different from version 3 : C2 should be equal to S1 and S2 equal to C1 which is obviously not true in my case.

Any idea ?
Reply With Quote
Reply Post New Thread
Tags:



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:08 PM.


Powered by All-streaming-media.com; 2006-2011
vB forum hacked with Zoints add-ons