[RDD] Playback while recording

Morten Krarup Nielsen mortenkn at gmail.com
Wed May 11 07:34:53 EDT 2016

 I don't know if I misunderstood the topic... But we start a recording
from our external news provider at XX:00:00 for three minutes. But we
let the song currently playing  finish, then we play the news at for
example XX:01:10. This way we "play file while recording it"

2016-05-11 5:33 GMT+02:00 Lorne Tyndale <ltyndale at tyndaleweb.com>:
> Regarding starting playout of a cut after starting to record into it
> (playout while recording)
> I just tried this, and I think the last time I tried this was on the
> pre-version 2.x of Rivendell (1.x.x).  I seem to recall it working in
> the past.
> I just tried it on Rivendell 2.12.0 with an m-audio Delta card, both
> going through Jack and ALSA.  I may be missing something, but I don't
> think I am. I've got normalization and auto trim off.
> If there is no audio in the cut when the cut is added to rdairplay, then
> it won't play anything if recording into the cut has already started but
> the recording has not completed.
> If there is audio in the cut, then it'll grab the length of audio that
> is there, and only play that amount of audio even if the recording is
> still ongoing.
> I've found a similar experience when using RDCatch to do the playout
> event.
> I've tried this recording both through RDCatch and through the record
> option in RDLibrary.  Found the same results each time I've tested.
> For starting recording after you've started the playout - this works as
> expected - the playout will continue to play the audio that was there
> before you started the record.
> I do recall this worked in Rivendell 1.x.x, but I have not tried this
> feature since then.
> Lorne Tyndale
>> Well, that prompted a call to Fred,  who also indicated that is should be do-able....with some caveats;;;
>> testing now........
>>     On Tuesday, May 10, 2016 6:17 PM, Lorne Tyndale <ltyndale at tyndaleweb.com> wrote:
>> Hi,
>> Delayed playback / playback while recording has been supported for a
>> while.  It can be done without a problem.
>> http://rivendell.tryphon.org/wiki/Delayed_playback
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