[libav-api] Piping in ffmpeg? Using Libav to write to RTMP directly?

Ronald S. Bultje rsbultje at gmail.com
Fri Apr 15 18:12:56 CEST 2011


(This may fit better on -tools.)

On Fri, Apr 15, 2011 at 2:55 AM, Jieyun Fu <jieyunfu at mit.edu> wrote:
> One short version of the question: is there anyway to let Libav write to a
> RTMP server directly? I only know how to write to a file on the disk, from
> output-example.c.
> A very slightly longer version of the question: I have a video generator
> that generates the video using libav, and is able to write the video into a
> file on the disk. Now, I need to use ffmpeg to send this file to a RTMP
> server simultaneously, when this video is being generated.
> One way to solve this problem, is to let this video generator write the
> video to say, output.flv, and then while this video is still being written,
> fork a process from the video generator that executes:
>  ffmpeg -re -i output.flv -f flv rtmp://server/output/ ( just an example,
> skipped many parameters)
> But is there anyway to use piping to avoid writing to the disk and then call
> ffmpeg, but let ffmpeg takes my video generator as its input directly?

Why not just output to rtmp:// directly then?


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