hlssink does not seperate ts segments when not going through encoder

[Nicolas Dufresne]

Le mardi 15 juin 2021 à 00:48 -0500, gugovind via gstreamer-devel a écrit :
> Hi,
> I have a RTSP source that I want to ingest which is already in H264 format.
> So all I want to do is just mux it and then save it as hls segments without
> doing any decoding or encoding. However my pipeline saves the ts file as one
> large file and does not follow the parameters specified in hlssink.

hlssink does not request keyframe. So you have to configure the GOP size (key-
int-max in x264enc element) in order to periodically produce IDR. Then the muxer
will mark the packet and hlssink will split on the closest next IDR.

If you want a tighter cut, use hlssink2, this one will deal with the muxer
(using splitmuxsink) and will request keyframes upstream, allowing for open GOP
at the encoder level.

> 
> For example the following pipeline does not generate ts segments at 5
> seconds. It generates one large ts file.
> ```
> *gst-launch-1.0 rtspsrc
> location="rtsp://user:pass@10.0.0.23:554/cam/realmonitor?channel=1&subtype=0"
> ! rtph264depay ! h264parse !  mpegtsmux ! hlssink playlist-length=5
> max-files=10 target-duration=5 playlist-root="http://localhost/hls/"
> playlist-location="stream0.m3u8" location="fragment%05d.ts"*
> ```
> But if I add decoder and encoder it generates ts segments at 5 second
> intervals as specified in hlssink params.
> ```
> *gst-launch-1.0 rtspsrc
> location="rtsp://user:pass@10.0.0.23:554/cam/realmonitor?channel=1&subtype=0"
> ! rtph264depay ! h264parse ! decodebin ! videoscale ! x264enc ! mpegtsmux !
> hlssink playlist-length=5 max-files=10 target-duration=5
> playlist-root="http://localhost/hls/" playlist-location="stream0.m3u8"
> location="fragment%05d.ts"*
> ```
> I dont want to add a decode and encode as I want to just save it as
> H264encoded file which I am already getting from my source.
> 
> Please help! 
> Thanks a lot
> Guru
> 
> 
> 
> --
> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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