Recording RTMP Webcams from cam4(HowTo record XXX/adult web-cam videos from cam4.com)

[grizzler]

Hi Elgero,

I do understand your frustration with people that seem not to appreciate your software, but only reveal themselfes when there´s something to critisize.

Human nature is far from always kind, but perhaps people want to stay below the radar when it´s adult related stuff, despite that it´s fully anon to be here, and only show up when they get really desperate. That´s no excuse of course.. just an idea I got.

Let me know in a private msg if there is anything you can think of (caps perhaps?) that I could provide to show my big thank you for a copy of cam4grabber.
I´m a programmer myself, so really curious to see your work.

[Elgero]

It's not about appreciation. The fact that many people use the tool is already appreciation enough.

I'm not looking for a 'thank you', I'm just expecting people to contribute more to this forum than "the file is not available anymore, upload it again!" or "the tool doesn't work anymore, fix it!" or "does the tool also download private shows, because if it doesn't, then it's useless!"

[grizzler]

Hi Elgero,

You´re making complete sense here. Sometimes the net gets the worst out of people, but fortunately - not least when there are contributors of free software - also the best with others.

I got an email from you on another topic, and I have something important to say about it. Unfortunately I can´t reply cause your inbox is over its limit..

[Elgero]

I've removed a few PM's. Try now.

[Calvin1961]

Originally Posted by Elgero

Because these forums are dominated by spambots and people who register just to get free stuff, but don't have anything positive to offer.

I can appreciate your frustration. Please don't take my post as being demanding

I've been working on my own solution to this activity using RTMPDump, URLSnoop and a Windows cmd script to glue it all together and make it easy to use. Most of it is now working pretty good.

In a post MUCH earlier in this thread a guy suggested a http request that you could make that would return a rtmp string from the servers with the right information. Unfortunately, his query doesn't work correct. It returns a rtmp address, but NOT the right one

With a couple of hours work and a packet sniffer I'm sure I could work this all out myself, but rather than re-invent the wheel, would you be prepared to let me know what query I need to make of the servers to get the CORRECT xrtmp or yrtmp response returned to use with rtmpdump ? Probably best if you answer this in a PM, if you wish to, rather than cause a commotion here

all the best,

Calvin.

[Elgero]

It's not really a secret and the majority of the people will have no idea how to do it. You won't be able to do it with a simple script or just rtmpdump, as far as I know.

Yes, you must first make a http request, which will give you an rtmp url. This rtmp url contains an IP address. Then you must connect to that IP address on port 1935 via sockets and implement the rtmp handshake (C0+C1, S0+S1+S2, C2 + 'Connect' request packet with broadcaster name and username).

The server will reply with "setStatus ok" and will also send you the connection id. Then send the 'requestVideoStream' packet with "sessions/<connectionId>" + "<broadcaster>/chat" + "users/0" to the server. These are all amf encoded messages. After you've done all these steps correctly, the server will send you the correct rtmp url.

It looks like xrtmp or yrtmp, but these are amf encoded messages, so the 2 bytes before 'rtmp' are the length of the rtmp url. When looking at the ascii table, 'x' = 0x78 and 'y' = 0x79. 0x00 0x78 converted to a two-byte integer value = 120. 0x00 0x79 converted to a two-byte integer value = 121.

So it's not a matter of simply doing a http request.

[Calvin1961]

Originally Posted by Elgero

It's not really a secret and the majority of the people will have no idea how to do it. You won't be able to do it with a simple script or just rtmpdump, as far as I know.

<snip>

So it's not a matter of simply doing a http request.

BUMMER, I was hoping I could do a call from within my script using WGet to retrieve the correct rtmp stream info to feed to RTMPDump, looks like that plan is down the drain

Oh well, what I have works reasonably well.

I have URLSnoop feeding my script the correct RTMP stream info, and my script takes care of the rest, including recovery if MY end falls over and stops recording for any reason.

The only thing I can't do using my approach is recover recording if the sender has a problem and gets disconnected. When they start their cam back up, they have a new identity and I have to manually intervene to restart recording.

Thanks for info anyway, much appreciated !

[POWBlock]

Its funny to see how lame and stupid I am (after looking at Elgero's neat tool), I dont have the intelligence to make such a great tool as he did, well, but at least i have my own ways (which are quite lame).

After starting a new job and not having time to be on cam4 like i used to do, all i did was setting a browser refresher with many tabs opened while jaksta captured all the streamings (LAME). haha

Well but it works, thats what is important and since then i dont miss many of the shows i like.

Anyway, that brings me to my problem, on cam4 there is some girls who charge to turning the audio on, so on the beginning of the show the audio is mute, after sometime someone pays the girl and she unmutes it, and the whole thing gets recorded (audio+video).

The problem is, some players and other programs like ffmpeg doesnt detect the audio stream when the video starts mute, after searching on the web i found out that the Adobe Media Player can still play it like it should, i tested it here and when the audio part starts the video stops but the audio goes on, that sucks.

I just wanted to know if there is a way to fix this damn problem, i know the fault is the Nellymoser codec which is proprietary and good tools for it are rare, so many things doesnt work properly with it, can somebody help me to fix the video or suggest another player?

VLC, Media Player Classic and doesnt work.

[Calvin1961]

Originally Posted by POWBlock

i know the fault is the Nellymoser codec which is proprietary and good tools for it are rare, so many things doesnt work properly with it, can somebody help me to fix the video or suggest another player?

VLC, Media Player Classic and doesnt work.

Hi POWBlock,

I have found similar problems with editing RTMP captures in VirtualDub. I haven't found a codec (real codec NOT a DirectShow plugin which is what VirtualDub needs) to deal with NellyMoser, hence edits performed in VirtualDub are "video only" results

I actually tried editing the captures using AVIDeMux as well, it chokes and crashes on the files when you try to save the edited version

Calvin.

[POWBlock]

Originally Posted by Calvin1961

Hi POWBlock,

I have found similar problems with editing RTMP captures in VirtualDub. I haven't found a codec (real codec NOT a DirectShow plugin which is what VirtualDub needs) to deal with NellyMoser, hence edits performed in VirtualDub are "video only" results

I actually tried editing the captures using AVIDeMux as well, it chokes and crashes on the files when you try to save the edited version

Calvin.

FFMpeg can convert Nellymoser ... but not in all the cases, if u have a video that the audio starts since the beginning it can be easily converted on ffmpeg, even if the audio gets choppy or even if the girl muted the show on the middle of it and then unmuted it, ffmpeg can still convert that and even add silence on that part.

The problem is when the video starts without audio, because ffmpeg CANT detect the audio stream ... sometimes i restart the capture when the girl turns audio on, to fix this, but not all the times i can pay attention to that.