How to record only audio OR only video from RTMP stream in Red5

[Sneha Patil]

I have a client that publishes RTMP to Red5 server (both audio and video). I want to record only audio OR only video from the published stream. Is there any API in Red5 which allows to record in such a way?

My Red5 vesion is 1.0
And, in 'org.red5.server.api.stream.IBroadcastStream' class, I couldn't find a method which can mute OR drop the video/audio from RTMP stream.

Please Help.

[Rajdeep Rath]

To record 

http://flashvisions.com/record-live-stream-with-red5-media-server/

To mute

Use client side Apis to drop mic

To record audio only or video only

Use client side api to drop mic or camera

Or

Record entire stream and use  ffmpeg to extract what you want

Regards

Rajdeep Rath 

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[Sneha Patil]

Hi Rajdeep,

Thank you for your reply.

I don't want to mute camera/microphone on client side. Its only for recording purpose that I want to drop either audio or video.

It seems only option is to record everything and then extract required media.

Thanks again.

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[Mondain]

You could implement your own RecordingListener and add / remove them from your streams. These listeners would be coded in such a way that they ignore the audio or video when writing the files. The listeners would be added on your command, via your client or some other means by gaining access to the ClientBroadcastStream. Here is the area that you check the data type coming in: https://github.com/Red5/red5-server-common/blob/master/src/main/java/org/red5/server/stream/RecordingListener.java#L247

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[Sneha Patil]

Hi Mondain,
That sounds interesting. But, I couldn't find the RecordingListener in Red5 1.0 source code.
Could you please help me pointing such Listener in 1.0?

Thanks,
Sneha.

[Sneha Patil]

version 1.0.1

[Rajdeep Rath]

 try to use the latest or at least above 1.0.2 for best results 

[Sneha Patil]

Yes. But, Its a legacy code. So, I want to implement it with 1.0.1 version only. Is it possible with 1.0.1?

[Mondain]

In a pre 1.0.1 version you'd have to write your own impl of ClientBroadcastStream in lieu of implementing the listener stuff yourself. It shouldn't be too difficult to upgrade to the latest stuff to be perfectly honest.

[Sneha Patil]

Ok. Thank you Mondain. That will be helpful.

[Mondain]

When moving to the newer versions, this page might be helpful to trackdown pesky start up issues https://code.google.com/p/red5/wiki/ServerWontStart

[Sneha Patil]

Great. Thanks so much!

[Rajdeep Rath]

Hey Sheha, you can try one more thing. If you can trigger ffmpeg (with librtmp) from red5 broadcast start method, you can make it capture the live stream and write a mp3/mp4/Flv what ever you want..on the fly. Thus you will be saving time on post record extraction as this would be similar to live recording with almost a delay of 10 sec.