Jetson TX2 - GStreamer - VP8
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VP8 encoding
videotestsrc
ARM load: 156% but only videotestsrc consumes 100%. According to the NVIDIA forum when using videotestsrc the system is also doing memory copies to feed the encoder with NVMM memory buffers so that loads more the ARM.
gst-launch-1.0 videotestsrc num-buffers=150 ! 'video/x-raw, format=(string)I420,width=(int)640, height=(int)480' ! omxvp8enc ! qtmux ! filesink location=test.mp4 -e
VLC can play the file correctly at 30fps and reports as codec: Google/On2's VP8 Video (VP80). The fan on top of the SoC didn't turn on.
nvcamerasrc
gst-launch-1.0 -e nvcamerasrc fpsRange="30.0 30.0" ! 'video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, format=(string)I420, framerate=(fraction)30/1' ! \ nvvidconv flip-method=2 ! 'video/x-raw(memory:NVMM), format=(string)I420' ! omxvp8enc bitrate=8000000 ! qtmux ! filesink location=test.mp4 -e
VLC reports bitrate on ~8Mbps.
ARM consumption ~50% of one core (4 cores available 400% - this means something like 15.5% of total). However, only the capture is 11.25% so the VP8 consumes 4.25%
RAM 1442/7853MB (lfb 1134x4MB) cpu [0%@1267,off,off,0%@1267,0%@1267,0%@1267] RAM 1442/7853MB (lfb 1134x4MB) cpu [16%@345,off,off,12%@345,15%@345,14%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [11%@345,off,off,17%@345,14%@345,17%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [17%@345,off,off,18%@345,13%@345,10%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [19%@345,off,off,18%@345,14%@345,9%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [13%@499,off,off,14%@499,15%@499,17%@499] RAM 1442/7853MB (lfb 1134x4MB) cpu [16%@345,off,off,15%@345,8%@345,11%@345] RAM 1443/7853MB (lfb 1134x4MB) cpu [14%@345,off,off,13%@345,9%@345,15%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [9%@345,off,off,16%@345,13%@345,9%@345] RAM 1443/7853MB (lfb 1134x4MB) cpu [10%@345,off,off,15%@345,8%@345,14%@345] RAM 1442/7853MB (lfb 1134x4MB) cpu [11%@345,off,off,19%@345,10%@345,15%@345] RAM 1443/7853MB (lfb 1134x4MB) cpu [14%@345,off,off,23%@345,10%@345,13%@345] RAM 1443/7853MB (lfb 1134x4MB) cpu [14%@345,off,off,20%@345,8%@345,12%@345] RAM 1443/7853MB (lfb 1134x4MB) cpu [15%@345,off,off,21%@345,6%@345,10%@345]
1574 root 20 0 9.979g 264008 44716 S 45.7 3.3 14:43.58 nvcamera-daemon 13065 nvidia 20 0 719944 14140 9996 S 9.2 0.2 0:09.34 gst-launch-1.0
The encoder exposes the following parameters
bitrate : Target bitrate
flags: readable, writable, changeable in NULL, READY, PAUSED or PLAYING state
Unsigned Integer. Range: 0 - 4294967295 Default: 4000000
quant-i-frames : Quantization parameter for I-frames (0xffffffff=component default)
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295
quant-p-frames : Quantization parameter for P-frames (0xffffffff=component default)
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295
quant-b-frames : Quantization parameter for B-frames (0xffffffff=component default)
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 4294967295
iframeinterval : Encoding Intra Frame occurance frequency
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 0
SliceIntraRefreshEnable: Enable Slice Intra Refresh while encoding
flags: readable, writable, changeable only in NULL or READY state
Boolean. Default: false
SliceIntraRefreshInterval: Set SliceIntraRefreshInterval
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 4294967295 Default: 60
bit-packetization : Whether or not Packet size is based upon Number Of bits
flags: readable, writable, changeable only in NULL or READY state
Boolean. Default: false
vbv-size : virtual buffer size = vbv-size * (bitrate/fps)
flags: readable, writable, changeable only in NULL or READY state
Unsigned Integer. Range: 0 - 30 Default: 10
temporal-tradeoff : Temporal Tradeoff value for encoder
flags: readable, writable, changeable only in NULL or READY state
Enum "GstOmxVideoEncTemporalTradeoffType" Default: 0, "Do not drop frames"
(0): Do not drop frames - GST_OMX_VIDENC_DROP_NO_FRAMES
(1): Drop 1 in 5 frames - GST_OMX_VIDENC_DROP_1_IN_5_FRAMES
(2): Drop 1 in 3 frames - GST_OMX_VIDENC_DROP_1_IN_3_FRAMES
(3): Drop 1 in 2 frames - GST_OMX_VIDENC_DROP_1_IN_2_FRAMES
(4): Drop 2 in 3 frames - GST_OMX_VIDENC_DROP_2_IN_3_FRAMES
EnableMVBufferMeta : Enable Motion Vector Meta data for encoding
flags: readable, writable, changeable only in NULL or READY state
Boolean. Default: false
qp-range : Qunatization range for P and I frame,
Use string with values of Qunatization Range
in MinQpP-MaxQpP:MinQpI-MaxQpP:MinQpB-MaxQpB order, to set the property.
flags: readable, writable
String. Default: "-1,-1:-1,-1:-1,-1"
MeasureEncoderLatency: Enable Measure Encoder latency Per Frame
flags: readable, writable, changeable only in NULL or READY state
Boolean. Default: false
EnableTwopassCBR : Enable two pass CBR while encoding
flags: readable, writable, changeable only in NULL or READY state
Boolean. Default: false
preset-level : HW preset level for encoder
flags: readable, writable, changeable only in NULL or READY state
Enum "GstOMXVideoEncHwPreset" Default: 0, "UltraFastPreset"
(0): UltraFastPreset - UltraFastPreset for high perf
(1): FastPreset - FastPreset
(2): MediumPreset - MediumPreset
(3): SlowPreset - SlowPreset