I think you could have two incoming streams (one being the pause image), however I don't believe a filter exists that lets you dynamically switch. Would be interesting to write one and contribute it back though!
On 7/6/15, Michael Pastore <[email protected]> wrote: > We are looking into using FFMPEG as a replacement for Microsoft Expression > Encoder for live streaming. It seems FFMPEG can almost do everything we > need, except that Expression lets you easily switch input sources on the fly > for a live stream. I haven't found a way to do the same thing in FFMPEG. > > We want to stream live audio over a static, looping video. The stream > outputs to an IIS Smooth Streaming publishing point. We are able to do this > with the following command: > > ffmpeg.exe -y -i "<looping video.mp4>" -f dshow -i audio="<my audio device>" > -movflags isml+frag_keyframe -c:a libvo_aacenc -c:v libx264 -pix_fmt yuv420p > -vf scale=320:240 -b:v 16k -f ismv <output> > > Our problem is that the software needs to support a special feature. At any > time, the person controlling the live stream can "pause" it. What this means > is any person who views this stream in their browser will see, instead of > the looping image file, an image saying something like "We will be right > back". The user will also hear pause music, instead of the feed from the > microphone. When they "resume" the live stream, then viewers will once again > see the looping video file and hear the audio from the microphone. > > I found a thread from 2012 asking about dynamic overlays: > (https://ffmpeg.org/pipermail/ffmpeg-user/2012-August/008703.html ). The > replies suggest that this is not possible through the CLI, but is that still > the case today? I could accomplish what I want if I was able to add an > overlay to a live stream on the fly. > > Is there any way I can accomplish this goal, short of writing a custom > filter? Thanks in advance! > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
