Reduce latency on Win10 for AWS Kinesis Video

[Angela Yan]

Hi all,

I am running gstreamer on Win 10 to stream from a high res camera to AWS Kinesis Video stream through the AWS producer plugin (KVSSink). However, we found significant delay in the whole process. Around ~10 sec delay, with 60% on gstreamer to AWS and 40% on AWS to player.

I have tried added tune=zerolatency on the encoder, which seems to reduce 2s of the latency. Then speed-preset=ultrafast seems no help on the latency. Anyone can advise how to further reduce the latency on gStreamer pipeline? I am new to gStreamer. Hit lightly if I make any mistakes. :p

Here is my pipeline:
gst-launch-1.0 ksvideosrc do-timestamp=TRUE device-name="Studio Camera" ! video/x-raw,width=1920,height=1080,framerate=30/1 ! videoconvert ! x264enc bframes=0 key-int-max=45 bitrate=4096 tune=zerolatency speed-preset=ultrafast ! video/x-h264,profile=baseline,stream-format=avc,alignment=au ! kvssink stream-name="ANGELA-Stream" access-key="xxx" secret-key="xxx" aws-region="xxx"

Thank you,
Angela
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