zynq gst-launch-1.0相关

三 视频管道：

1,gst-launch-1.0：

1）RGB888显示：

gst-launch-1.0 videotestsrc pattern=1 ! video/x-raw,format=RGB,width=1920,height=1080,framerate=60/1 ! kmssink plane_id=36 render-rectangle="<0,0,1920,1080>" bus-id="a0070000.v_mix"

gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw,format=RGB,width=1920,height=1080,framerate=60/1 ! kmssink plane_id=36 render-rectangle="<0,0,1920,1080>" bus-id="a0070000.v_mix"

2）gst播放图像显示：

gst-launch-1.0 filesrc location=/media/sd-mmcblk1p1/1.jpg ! jpegdec ! imagefreeze ! videoconvert ! kmssink plane_id=36 render-rectangle="<0,0,1545,842>" bus-id="a0070000.v_mix"

gst-launch-1.0 filesrc location=/media/sd-mmcblk1p1/1.jpg ! jpegdec ! videoscale ! video/x-raw,width=320,height=240 ! imagefreeze ! videoconvert ! kmssink plane_id=36 render-rectangle="<0,0,320,240>" bus-id="a0070000.v_mix"

3) 播视频：

root@zcu106_vcu_trd:~# gst-launch-1.0 uridecodebin uri="file:///media/card/bbb_sunflower_1080p_60fps_normal_avc.mp4" ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

4) hdmi rx显示到tx：

modetest  -D a0070000.v_mix  -s 43:1920x1080-60@AR24

modetest -D a0070000.v_mix -s 40:1920x1080-60@BG24 &

xmedia-ctl -d /dev/media7 -V "\"a0080000.v_proc_ss\":0  [fmt:RBG888_1X24/1920x1080 field:none]"
xmedia-ctl -d /dev/media7 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/1920x1080 field:none]"

v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat='NV12'

gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw, width=1920, height=1080, format=NV12, framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true latency-mode=normal ! video/x-h265, profile=main ! h265parse ! omxh265dec internal-entropy-buffers=5 latency-mode=normal ! queue max-size-bytes=0 ! kmssink bus-id="a0070000.v_mix"

5) 从hdmi rx获取视频保存：

5-1.抓取视频并压缩成h265格式:

1080P：
xmedia-ctl -d /dev/media7 -V "\"a0080000.v_proc_ss\":0  [fmt:RBG888_1X24/1920x1080 field:none]"
xmedia-ctl -d /dev/media7 -V "\"a0080000.v_proc_ss\":1  [fmt:VYYUYY8_1X24/1920x1080 field:none]"
gst-launch-1.0 v4l2src device=/dev/video0 io-mode=4 ! video/x-raw, format=NV12,width=1920,height=1080,framerate=60/1 ! omxh265enc qp-mode=auto gop-mode=basic gop-length=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=true low-bandwidth=false filler-data=true latency-mode=normal ! queue ! mpegtsmux alignment=7 name=mux ! filesink location="/media/usb/test.ts"

6) 测试图像：

gst-launch-1.0 videotestsrc !  kmssink bus-id="a0070000.v_mix"

7) 设置偏移位以及图层：

gst-launch-1.0 videotestsrc pattern=3 ! video/x-raw,format=NV12,width=1920,height=1080,framerate=60/1 ! kmssink plane_id=30 render-rectangle="<1920,0,1920,1080>" bus-id="a0070000.v_mix"

8) 冻结摄像头图像然后显示：

gst-launch-1.0 v4l2src device=/dev/video2 io-mode=2 ! video/x-raw, format=RGB,width=1920,height=1080,framerate=60/1 ! imagefreeze ! kmssink plane_id=36 render-rectangle="<0,540,960,540>" bus-id="a0070000.v_mix"

9) 特殊分辨率显示（需要添加render-rectangle配置）：

gst-launch-1.0 videotestsrc pattern=1 ! video/x-raw,format=RGB,width=1440,height=1080,framerate=60/1 ! kmssink plane_id=35 render-rectangle="<0,0,1440,1080>" bus-id="a0070000.v_mix"

10)录像可播放视频：

vcu-demo-camera-encode-file.sh -v "/dev/video5" -s 1920x1080 -n 1000

root@lingmou:/media/sd-mmcblk1p1# which vcu-demo-camera-encode-file.sh 
/usr/bin/vcu-demo-camera-encode-file.sh

11）录制RGB格式时会用CPU软转换RGB->YUV420，会卡。

gst-launch-1.0 v4l2src device=/dev/video3 ! video/x-raw, format=RGB,width=1920,height=1080,framerate=60/1 ! videoconvert ! video/x-raw,format=NV12 ! omxh264enc control-rate=constant b-frames=2 gop-length=60 periodicity-idr=60 prefetch-buffer=true target-bitrate=5500 ! video/x-h264, alignment=au ! h264parse ! mpegtsmux name=mux mux. ! filesink location=videotestsrc1.mkv

12）NV16 H264编码录制视频 (需要拷贝到本地播放，不然VLC会卡)(不加绝对路径/usr/bin/gst-launch-1.0会录制失败)：

#!/bin/sh
/usr/bin/gst-launch-1.0 v4l2src device=/dev/video3 io-mode=4 ! video/x-raw, format=NV16,width=1440,height=1080,framerate=60/1 ! omxh264enc qp-mode=auto gop-mode=basic gop-length=60 periodicity-idr=60 b-frames=0 target-bitrate=60000 num-slices=8 control-rate=constant prefetch-buffer=TRUE low-bandwidth=false filler-data=0 cpb-size=1000 initial-delay=500 ! queue ! mpegtsmux alignment=7 name=mux ! filesink location=test-nv16-h264.ts