CODEWITHSUNDEEP
gstreamermp4mjpegtee
Tim Autin
Tim Autin

Reputation: 6165

GStreamer Tee : x264enc + jpegenc -> deadlock?

I have the following GStreamer commands working :

1°) streaming 2 MJPEG streams over TCP :

gst-launch-1.0 v4l2src device=/dev/video0 ! deinterlace mode=1 ! videorate ! videoscale ! tee name=tp \
\
tp. ! queue ! video/x-raw, framerate=10/1, width=960, height=540 ! jpegenc quality=40 ! multipartmux ! tcpserversink host=0.0.0.0 port=8093 \
\
tp. ! queue ! video/x-raw, framerate=15/1, width=960, height=540 ! jpegenc quality=40 ! multipartmux ! tcpserversink host=0.0.0.0 port=8096

2°) streaming 2 MP4 streams over TCP :

gst-launch-1.0 v4l2src device=/dev/video0 ! deinterlace mode=1 ! videorate ! videoscale ! tee name=tp \
\
tp. ! queue ! video/x-raw, framerate=10/1, width=960, height=540 ! x264enc bitrate=1000 ! mpegtsmux ! tcpserversink host=0.0.0.0 port=8093 \
\
tp. ! queue ! video/x-raw, framerate=15/1, width=960, height=540 ! x264enc bitrate=1000 ! mpegtsmux ! tcpserversink host=0.0.0.0 port=8096

But this one doesn't (trying to stream 1 MJPEG stream and 1 MP4 stream over TCP) :

gst-launch-1.0 v4l2src device=/dev/video0 ! deinterlace mode=1 ! videorate ! videoscale ! tee name=tp \
\
tp. ! queue ! video/x-raw, framerate=10/1, width=960, height=540 ! jpegenc quality=40 ! multipartmux ! tcpserversink host=0.0.0.0 port=8093 \
\
tp. ! queue ! video/x-raw, framerate=15/1, width=960, height=540 ! x264enc bitrate=1000 ! mpegtsmux ! tcpserversink host=0.0.0.0 port=8096

The command line says :

Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Redistribute latency...

Which sounds fine, but I'm unable the play the streams in VLC (it's working with the 1st command line).

The only change is that I replaced, for only one of the streams :

jpegenc quality=40 ! multipartmux

by :

x264enc bitrate=1000 ! mpegtsmux

Any help would be appreciated...

Thanks

Upvotes: 1

Views: 2022

Answers (1)

Tim Autin
Tim Autin

Reputation: 6165

Found the answer here : http://gstreamer-devel.966125.n4.nabble.com/Pipeline-Freezes-When-Adding-In-Tee-With-x264enc-td4301890.html

Using "x264enc tune=zerolatency" made it working !

Upvotes: 2

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