Pausing/resuming a video recording

[Luis de Bethencourt]

I have never tried something similar to this. But I can imagine you are
having timestamp related problems.

When you resume recording, the timestamp of those frames is the real time
and doesn't account for the (let's call it) "running recording time". You
are going to have to manipulate these so they follow continuously.

Luis


On 3 July 2014 05:42, Lee Matthews <lma at spaceapplications.com> wrote:

> Hi,
>
> I'm streaming video using the vp8 codec in a webm container. I can record
> the video also by using a tee and piping the video to a filesink.
>
> To start/stop recording, I dynamically add/remove a group of elements to a
> tee in the pipeline.
>
> I also wish to be able to pause/resume the recording. I do this using
> output-selector to select between filesink and fakesink, the pipeline
> remaining in the PLAYING state. So when recording normally the video goes
> to filesink, during a pause it goes to fakesink, and on resume it goes back
> to filesink.
>
> My pipeline looks like the following :
>
>
> v4l2sec -- caps filter -- videoconvert -- vp8enc -- webmmux -- tee --
> queue -- multisocketsink
>                                                                 |
>
> |-----queue -- output-selector -- filesink
>
>              |
>
>              |--------- fakesink
>
>
> If I record a video and say pause the video at 10 seconds, resume the
> video at 20 seconds and stop the video at 30 seconds. When playing back all
> is ok until 10 seconds, then the frame freezes until 20 seconds, at which
> point the video continues ok to 30 seconds.
>
> Does anyone know how to resolve this ?
>
> Thanks
> Lee
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