How to segment seek in dynamic pipeline

[Thibault Saunier]

Hi,

On Sun, Aug 30, 2020 at 9:57 PM xmufzy <xmufzy at foxmail.com> wrote:

> Thank you , I known it's easier with ges, but I don't known how to change
> the
> encoder to nvenc, and hown can I export the data from ges to app sink, or
> import data from appsrc.
>

You can check the EncodingProfile[0] API to enforce a certain encoder, on
the command line you could even do for example
`video/quicktime:nvenc:audio/x-opus`.

You can set your sinks as you would do with `playbin` if you use
GESPipeline, or you can use GESTimeline as any bin if you need more
control. For appsrc you can use the `appsrc://` protocol for your clips and
then work from there, or you can subclass `GES[Video|Audio]Source` to
implement exactly what you need.

- Thibault

[0]
https://gstreamer.freedesktop.org/documentation/pbutils/encoding-profile.html


> Nicolas Dufresne-5 wrote
> > Le jeudi 27 août 2020 à 08:14 -0500, xmufzy a écrit :
> >> If we can do 2 segment seek for the element
> >>
> >>
> >> pipeline change  :
> >> filesrc(backgroup.mp4) --> qtdemux --> h264dec --> queue --\
> >>
>
> >> --> mixer -->x264enc --> filesink
> >> filesrc(fga.mp4) --> qtdemux --> h264dec -->queue ---------/
> >>
> >> if I need mix fga.mp4 3~8s, and backgroup.mp4 9~14s, I try to use 2
> >> gst_element_seek(SEGMENT)  for that, but failed
> >
> > This is easier done with ges-launch-1.0 (from gst-editing-services).
> >
> > ges-launch-1.0 +clip background.mp4 inpoint=9.0 duration=5.0 \
> >                +clip fga.mp4 inpoint=3.0 duration=5.0 \
> >                --smart-rendering --outputuri=file:///tmp/test.mp4
> >
> > You can live preview the edit by removing the render options (last
> > line).
> >
> >>
> >>
> >>
> >>
> >> --
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