Max-Bitrate Benchmarking - 2020.2 English

The following tables summarize the maximum bit rate achievable for 3840x2610p60 resolution, XV20 pixel format at GStreamer level. The maximum supported target bit rate values vary based on what elements and type of input used in the pipeline.

Maximum Bit Rate support for Record Use Case with 4kp60 Resolution

Table 1. Encoder Maximum Bit Rate Tests with XV20 format
Video Recording ( Live video capture → VCU encoder → Parser → Muxer → filesink )
Format	Codec	Entropy Mode	Rate Control Mode	B-Frames = 4	DDR Mode	Max Target Bitrate
4:2:2, 10-bit	H.264 (AVC)	CABAC	VBR	IBBBBP	PS-DDR	160 Mb/s
	H.264 (AVC)	CAVLC	VBR	IBBBBP	PS-DDR	160 Mb/s
	H.265 (HEVC)	-	VBR	IBBBBP	PS-DDR	267 Mb/s

Example pipeline used for measurement:

ENC_EXTRA_IP_BUFFERS=5 gst-launch-1.0 -e v4l2src device=/dev/video0 io-mode=4 num-buffers=7320 ! video/x-raw, width=3840, height=2160, format=NV16_10LE32, framerate=60/1 ! omxh265enc control-rate=variable  target-bitrate=267000 max-bitrate=320400  gop-mode=basic gop-length=60 b-frames=4 num-slices=8 prefetch-buffer=TRUE cpb-size=1000 initial-delay=500 ! video/x-h265 , profile=main-422-10   ! queue max-size-bytes=0 ! h265parse ! mp4mux ! fpsdisplaysink name=fps1sink text-overlay=false fps-update-interval=1000 video-sink="filesink location=/run/test_4kp60_xv20_hevc_267000.mp4"

Note:

It is recommended to store output file in RAM or SATA.
Achieved target bit rate depends on complexity of video content.
Above data is captured by recording a file in mp4 container format.

Maximum Bit Rate Support for Playback Use Case with 4kp60 Resolution

Playback ( Filesrc → Decoder → Display )
Format	Codec	Entropy Mode	Rate Control Mode	B-Frames = 4	DDR Mode	Max Target Bitrate
4:2:2, 10-bit	H.264 (AVC)	CABAC	VBR	IBBBBP	PL_DDR	120 Mb/s
	H.264 (AVC)	CAVLC	VBR	IBBBBP	PL_DDR	160 Mb/s
	H.265 (HEVC)	-	VBR	IBBBBP	PL_DDR	267 Mb/s

Example pipeline used for measurement:

gst-launch-1.0 filesrc location=/run/test_4kp60_xv20_hevc_267000.mp4 ! qtdemux ! h265parse ! omxh265dec internal-entropy-buffers=5 ! queue max-size-bytes=0 ! fpsdisplaysink name=fps1sink text-overlay=false video-sink="kmssink bus-id="a00c0000.v_mix" plane-id=33 render-rectangle=<0,0,3840,2160> fullscreen-overlay=1" -v

Note: It is recommended to keep input file in RAM or SATA.

Maximum Bit Rate Support for Streaming Use Case with 4kp60 Resolution

Table 2. Maximum Bit Rate Support for Streaming Use Case with 4kp60 Resolution
Video Streaming ( Live video capture → VCU encoder → Parser → rtppay → Stream-out Stream-in → rtpdepay → Decoder → Display )
Format	Codec	Rate Control Mode	Latency Mode	B-Frames = 0	DDR Mode	Max Target Bitrate
4:2:2, 10-bit	H.264 (AVC)	LOW_LATENCY	Normal	IPPP	Encoder (PS_DDR), Decoder (PL_DDR)	90 Mb/s
			Reduced			90 Mb/s
			Low latency			25 Mb/s
			Xilinx low latency			25 Mb/s
		CBR + max-picture-size	Normal			90 Mb/s
		CBR + max-picture-size	Reduced			90 Mb/s
	H.265 (HEVC)	LOW_LATENCY	Normal			130 Mb/s
			Reduced			130 Mb/s
			Low latency			25 Mb/s
			Xilinx low latency			25 Mb/s
		CBR + max-picture-size	Normal			110 Mb/s
		CBR + max-picture-size	Reduced			110 Mb/s

Example pipeline used for measurement:

H.265 (HEVC) with Low-latency Rate Control Mode and Xilinx Low Latency

Server

gst-launch-1.0 -v v4l2src device=/dev/video0 io-mode=4 ! video/x-raw\(memory:XLNXLL\), format=NV16_10LE32,width=3840,height=2160,framerate=60/1 ! queue ! omxh265enc num-slices=8 periodicity-idr=240 cpb-size=500 gdr-mode=horizontal initial-delay=250 control-rate=low-latency prefetch-buffer=true target-bitrate=25000 gop-mode=low-delay-p ! video/x-h265, alignment=nal ! queue max-size-buffers=0 ! rtph265pay ! udpsink buffer-size=60000000 host=192.168.0.2 port=5004 async=false max-lateness=-1 qos-dscp=60 max-bitrate=120000000 -v

Client

gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, media=video, clock-rate=90000, payload=96, encoding-name=H265" ! rtpjitterbuffer latency=7 ! queue ! rtph265depay ! h265parse ! video/x-h265, alignment=nal ! queue ! omxh265dec low-latency=1 ! video/x-raw\(memory:XLNXLL\) ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false video-sink="kmssink bus-id=a00c0000.v_mix" sync=true -v

H.265 (HEVC) with CBR Rate Control Mode and Normal Latency Mode

Server

gst-launch-1.0 -v v4l2src device=/dev/video0 io-mode=4 ! video/x-raw,format=NV16_10LE32,width=3840,height=2160,framerate=60/1 ! queue ! omxh265enc num-slices=8 gop-length=120 periodicity-idr=120 control-rate=constant max-picture-size=2017 prefetch-buffer=true target-bitrate=110000 gop-mode=low-delay-p ! video/x-h265, alignment=au ! rtph265pay ! udpsink buffer-size=60000000 host=192.168.0.2 port=5004 max-lateness=-1 qos-dscp=60 async=false max-bitrate=120000000 -v

Client

gst-launch-1.0 udpsrc port=5004 buffer-size=60000000 caps="application/x-rtp, media=video, clock-rate=90000, payload=96, encoding-name=H265" ! rtpjitterbuffer latency=1000 ! rtph265depay ! h265parse ! video/x-h265, alignment=au ! omxh265dec low-latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false video-sink="kmssink bus-id=a00c0000.v_mix fullscreen-overlay=1" sync=true -v

Note: The above data is captured by streaming elementary stream over RTP.

Maximum Bit Rate Support for Serial Use Case with 4kp60 Resolution

Table 3. Maximum Bit Rate Support for Serial Use Case with 4kp60 Resolution
Serial ( Live video capture → VCU encoder → VCU decoder → Display )
Format	Codec	Rate Control Mode	Latency Mode	B-Frames = 0 or 4	DDR Mode	Max Target Bitrate
4:2:2, 10-bit	H.264 (AVC)	LOW_LATENCY	Low Latency	IPPP	Encoder (PS_DDR), Decoder (PL_DDR)	25 Mb/s
		LOW_LATENCY	Xilinx Low Latency	IPPP		25 Mb/s
		CBR + max-picture-size	Normal	IBBBBP		90 Mb/s
		CBR + max-picture-size	Reduced	IPPP		200 Mb/s
	H.265 (HEVC)	LOW_LATENCY	Low Latency	IPPP		25 Mb/s
		LOW_LATENCY	Xilinx Low Latency	IPPP		25 Mb/s
		CBR + max-picture-size	Normal	IBBBBP		120 Mb/s
		CBR + max-picture-size	Reduced	IPPP		200 Mb/s

Example pipeline used for measurement:

H.265 (HEVC) with Low-latency Rate Control Mode and Xilinx Low Latency

gst-launch-1.0 -v v4l2src io-mode=dmabuf device=/dev/video0 ! video/x-raw\(memory:XLNXLL\), width=3840, height=2160, format=NV16_10LE32, framerate=60/1 ! queue ! omxh265enc num-slices=8 control-rate=low-latency gop-mode=low-delay-p target-bitrate=25000 cpb-size=500 gdr-mode=horizontal initial-delay=250 periodicity-idr=240 filler-data=0 prefetch-buffer=true ! video/x-h265, alignment=nal ! queue max-size-buffers=0 ! omxh265dec low-latency=1 ! video/x-raw\(memory:XLNXLL\) ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false "video-sink=kmssink bus-id=a00c0000.v_mix hold-extra-sample=1 show-preroll=false sync=true" sync=true -v

H.265 (HEVC) with CBR Rate Control Mode and Normal Latency Mode

gst-launch-1.0 -v v4l2src device=/dev/video0 io-mode=4 ! video/x-raw,format=NV16_10LE32,width=3840,height=2160,framerate=60/1 ! omxh265enc num-slices=8 gop-length=60 b-frames=4 control-rate=2 prefetch-buffer=true target-bitrate=120000 max-picture-size=2200 ! video/x-h265, alignment=au ! queue ! video/x-h265, profile=main-422-10, alignment=au ! omxh265dec low-latency=0 ! queue max-size-bytes=0 ! fpsdisplaysink name=fpssink text-overlay=false "video-sink=kmssink bus-id=a00c0000.v_mix fullscreen-overlay=1" sync=true -v