librtmp

[wmsgeek]

Hello, after compiling how do we pas the complex rtmp urls?
example :
rtmp://host.com/live playpath=123 swfUrl=http://host.com/123.swf live=1 pageUrl=http://website.tv timeout=10 token=token
do we send as AVOptions to Vitamio or just like a normal link.
thanks

[OnlyInAmerica]

The RTMP url is passed as the output location to the FFmpeg libraries just like any other path. The process for instructing FFmpeg to write data to "test.mp4" and "rtmp://test.com/teststream" is identical from a client programmer's perspective. As long as you pass a well-formed URL, it should work.

Beyond passing the url, you'll have to make sure your AVFormatContext and AVCodecContext are populated correctly. This is a larger question that will probably be better served by the FFmpeg community and lots of personal experimentation. I'm still figuring out how to properly specify all the necessary parameters myself.

I have some example JNI glue code you can check out. It covers the simple case of writing AV packets to FFmpeg with the following process:

• Prepare an AVFormatContext with your format & codec parameteres (prepareAVFormatContext)
• Write packets to the AVFormatContext (writeAVPacketFromEncodedData)
• Finalize the AVFormatContext when complete. (finalizeAVFormatContext)

[wmsgeek]

woah, and here i though we could just pas parameters directly to FFMPEG,
my luck. that would be not possible by me :/
this was for a live streaming app. i can just use AVOptions but parameters like token are not available (as input).
thanks

[OnlyInAmerica]

You can build the ffmpeg binary by removing the --disable-programs flag in build_ffmpeg_for_android.sh, then simply call the binary from Java. In that case you'd do something like:

ffmpeg -re -i input.mp4 -codec copy -f flv rtmp://your_url

This would only be useful if you're trying to stream a pre-existing file on the Android device to an rtmp endpoint.

[wmsgeek]

I guess you didnt get my point. The idea is to pas rtmp parameters as input not output to rtmp, the app I have is to watch tv streams it does not broadcast. Like we use AVoption in Vitamio (rtmp_xx) my plan was to use librtmp parameters I hope you can give me an idea how this can be done. I can link you to my app if required.

[bolds07]

4 years later but... you were trying to kill a fly with a nuclear bomb... why using a whole ffmpeg just to read rtmp stream?

I was in university [2010] and there was already java api to handle this kind of video data