H.265 has more artifacts than H.264

Autonomous Machines Jetson & Embedded Systems Jetson TX1
1

I used the omxh265enc gstreamer element to encode a YUV file at a low bitrate (2000000) but saw a lot of artifacts. When I used the omxh264enc gstreamer element the decoded video looks better than the decoded h.265.

Below is the gstreamer command I used:

Encode:
./gst-launch-1.0 filesrc location=VANC-59_wVico.i420 ! videoparse format=2 width=1296 height=740 framerate=60/1 ! omxh265enc SliceIntraRefreshEnable=true SliceIntraRefreshInterval=0 bit-packetization=true quant-i-frames=30 quant-p-frames=30 quality-level=2 low-latency=1 iframeinterval=1600 control-rate=2 bitrate=2000000 ! ‘video/x-h265, stream-format=(string)byte-stream’ ! h265parse ! rtph265pay mtu=1500 ! udpsink host=10.10.0.109 port=5000 sync=false async=false

Decode:

    ./gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,encoding-name=H265,payload=96 ! rtph265depay ! h265parse ! queue ! omxh265dec ! nvoverlaysink sync=false async=false -e

I used two nvidia tx1 boards - one for encode and the other to decode.

2

Hello, fa357:
I have tested the case in my side (by latest R24.1), and it works well. Would you please try in your side?

server:
gst-launch-1.0 videotestsrc ! video/x-raw,width=1296,height=740,format=I420 ! videoparse format=2
width=1296 height=740 framerate=60/1 ! omxh265enc
SliceIntraRefreshEnable=true SliceIntraRefreshInterval=0
bit-packetization=true quant-i-frames=30 quant-p-frames=30
quality-level=2 iframeinterval=1600 control-rate=2
bitrate=2000000 ! ‘video/x-h265, stream-format=(string)byte-stream’
! h265parse ! rtph265pay mtu=1500 ! udpsink host=10.19.225.83 port=5000
sync=false async=false

client runs same pipeline as yours.

br
ChenJian