filesink with 60 fps

[Ilya Aleshkov]

Nicolas,

Thank you so much! Now I'm able to encode and play streams with any desired
framerate.
But I've noticed one strange thing. When I open the generated .mkv-files
with VLC (or any other player) it can't recognize its duration.
In opposite to this behavior, when I encode .mkv from bare H264 bytestream
with x264:
x264 --crf 18 -o output.mkv video.h264
I'm able to see proper duration and progress in any media player.
I have already tried all parameters of the x264enc and matroskamux
elements. But nothing changed )

Thanks,
Ilya

On Wed, Jan 23, 2019 at 10:27 PM Nicolas Dufresne <nicolas at ndufresne.ca>
wrote:

> Le mercredi 23 janvier 2019 à 17:17 +0300, Ilya Aleshkov a écrit :
> > Hi,
> >
> > I'm capturing 720p 60 fps streams with my Logitech C922 Pro Stream
> Webcam:
> >
> > gst-launch-1.0 ksvideosrc !
> image/jpeg,width=1280,height=720,framerate=60/1 ! jpegdec ! videoconvert !
> x264enc ! filesink location=video.h264
> >
> > But resulting files play two times faster than needed. I have no idea
> why.
> > There are no any problems when rendering on the screen:
> >
> > gst-launch-1.0 ksvideosrc !
> image/jpeg,width=1280,height=720,framerate=60/1 ! jpegdec ! autovideosink
> >
> > Have you ever seen something like this?
>
> Bare H264 bytestream have no time information. Use a container like
> MP4, MKV, FLV, TS, etc in order to store you videostream with
> appropriate time information. As an example:
>
> gst-launch-1.0 ksvideosrc !
> image/jpeg,width=1280,height=720,framerate=60/1 ! jpegdec ! videoconvert !
> x264enc ! matroskamux ! filesink location=video.mkv
>
> >
> > Thanks,
> > Ilya
> > _______________________________________________
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> > gstreamer-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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