Hi,
Audio sync, I'm bypassing that problem by only using the audio from the
Video. As part of the macro to fire the video I'm planning on doing a
mute on the rivendell output using the MD macro. If I was using jack I
could do a jack disconnect on the output. I suppose there must be an
equivalent in ALSA.
The video fires almost instantly so there is only a split second
difference on rdairplay and the audio coming back from the video
itself. The tricky part is getting ffmpeg to encode for streaming
purposes as well as play for radio broadcast but I'm pretty sure it can
be done (if not liquidsoap can do streaming and playback at the same
time CPU permitting).
The only reason I keep Riv in the loop is I like the
automation/scheduling part of it and while a presenter is there, getting
a rough time left to play on the video is very helpful via the audio
playout buttons as normal.
Wayne Merricks
The Voice Asia
On 10/07/14 13:20, Morten Krarup Nielsen wrote:
Sounds interesting!
Maybe in the future we have to supply some kind of video supplement to
our radio stream, because people are always looking at their
smartphone, TV etc.
Are you testing with music videos? I think it would be very hard to
keep the picture and audio in sync.
2014-07-10 14:11 GMT+02:00 Wayne Merricks
<[email protected] <mailto:[email protected]>>:
Hi all,
I've been playing around with video streaming using
ffmpeg/liquidsoap. Its very much a work in progress and I've not
figured everything out yet.
I was thinking of storing videos separately to Riv but manually
renaming the files to the cart numbers in Riv (making sure the
video is the same length as the Riv audio). Then using macros
attached to the start/stop commands to RN ffmpeg -i CARTNUMBER.mp4
etc.
From what I can figure out if you present all the streams to
Icecast you can use Liquidsoap to switch to video streams when
they are live and then ffmpeg the mixed stream back to streaming
providers for the broadcast.
As an aside I've already tested Riv firing cvlc to a secondary
screen for a live event recently and it worked great.
Anyway all I'm really asking is has anyone attempted to have video
augmented radio? Its an odd mix of worlds but I'm trying to keep
away from proprietary systems. Finding a way to utilise Riv
alongside our audio output would be ideal.
Regards,
Wayne
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