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Recording video file with gstreamer and python script

Hello

Trying to use ROS+OpenCV+Gstreamer to write to a file. I am using the compressedImage message from a USB Camera in order to record a mp4 file.

Some reason python script is not able to run properly. I configure VideoWriter as:

if self.output_path: self.video_writer = cv2.VideoWriter("appsrc ! videoconvert ! avenc_h264 ! matroskamux ! filesink location=/home/hel/test.mp4", 0, 30, (640, 480))

ROS output has: [rospy.client][INFO] 2019-03-10 07:35:15,502: init_node, name[/video_recorder], pid[20053] [xmlrpc][INFO] 2019-03-10 07:35:15,503: XML-RPC server binding to 0.0.0.0:0 [xmlrpc][INFO] 2019-03-10 07:35:15,504: Started XML-RPC server [http://heldev:42449/] [rospy.init][INFO] 2019-03-10 07:35:15,505: ROS Slave URI: [http://heldev:42449/] [rospy.impl.masterslave][INFO] 2019-03-10 07:35:15,505: _ready: http://heldev:42449/ [rospy.registration][INFO] 2019-03-10 07:35:15,507: Registering with master node http://localhost:11311 [xmlrpc][INFO] 2019-03-10 07:35:15,507: xml rpc node: starting XML-RPC server [rospy.init][INFO] 2019-03-10 07:35:15,606: registered with master [rospy.rosout][INFO] 2019-03-10 07:35:15,606: initializing /rosout core topic [rospy.rosout][INFO] 2019-03-10 07:35:15,613: connected to core topic /rosout [rospy.simtime][INFO] 2019-03-10 07:35:15,616: /use_sim_time is not set, will not subscribe to simulated time [/clock] topic [rospy.internal][INFO] 2019-03-10 07:35:15,675: topic[/camera1/image_raw/compressed] adding connection to [http://heldev:34701/], count 0 [rospy.internal][INFO] 2019-03-10 07:35:15,852: topic[/rosout] adding connection to [/rosout], count 0 [rospy.core][INFO] 2019-03-10 07:36:06,050: signal_shutdown [signal-2] [rospy.internal][INFO] 2019-03-10 07:36:06,069: topic[/rosout] removing connection to /rosout [rospy.internal][INFO] 2019-03-10 07:36:06,070: topic[/camera1/image_raw/compressed] removing connection to http://heldev:34701/ [rospy.impl.masterslave][INFO] 2019-03-10 07:36:06,071: signal-2 [rosout][INFO] 2019-03-10 07:36:06,186: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4 [rosout][INFO] 2019-03-10 07:36:06,252: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4 [rospy.core][INFO] 2019-03-10 07:36:06,254: signal_shutdown [atexit]

During runtime ROS shows:

OpenCV: FFMPEG: tag 0x00000000/'????' is not supported with codec id 14 and format 'mp4 / MP4 (MPEG-4 Part 14)' int (Brightness, 0, id = 980900): -64 to 64 (1) int (Contrast, 0, id = 980901): 0 to 64 (1) int (Saturation, 0, id = 980902): 0 to 128 (1) int (Hue, 0, id = 980903): -40 to 40 (1) bool (White Balance Temperature, Auto, 0, id = 98090c): 0 to 1 (1) int (Gamma, 0, id = 980910): 72 to 500 (1) int (Gain, 0, id = 980913): 0 to 100 (1) menu (Power Line Frequency, 0, id = 980918): 0 to 2 (1) 0: Disabled 1: 50 Hz 2: 60 Hz int (White Balance Temperature, 16, id = 98091a): 2800 to 6500 (1) int (Sharpness, 0, id = 98091b): 0 to 6 (1) int (Backlight Compensation, 0, id = 98091c): 0 to 2 (1) menu (Exposure, Auto, 0, id = 9a0901): 0 to 3 (1) int (Exposure (Absolute), 16, id = 9a0902): 1 to 5000 (1) bool (Exposure, Auto Priority, 0, id = 9a0903): 0 to 1 (1) Setting auto_focus is not supported Setting focus_absolute is not supported ^C[image_header_republisher-6] killing on exit [video_recorder-5] killing on exit [velodyne_nodelet_manager_driver-2] killing on exit [velodyne_nodelet_manager_cloud-3] killing on exit [camera1/camera1-4] killing on exit [velodyne_nodelet_manager-1] killing on exit I was expecting OpenCV to use gstreamer by the appsrc line.

Also, how can I ensure OpenCV has gstreamer libraries compiled? with my ROS setup?

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updated 2019-03-10 07:42:21 -0500

berak gravatar image

Recording video file with gstreamer and python script

Hello

Trying to use ROS+OpenCV+Gstreamer to write to a file. I am using the compressedImage message from a USB Camera in order to record a mp4 file.

Some reason python script is not able to run properly. I configure VideoWriter as:

 if self.output_path:
            self.video_writer = cv2.VideoWriter("appsrc ! videoconvert ! avenc_h264 ! matroskamux ! filesink location=/home/hel/test.mp4", 0, 30, (640, 480))

480))

ROS output has: has:

[rospy.client][INFO] 2019-03-10 07:35:15,502: init_node, name[/video_recorder], pid[20053]
[xmlrpc][INFO] 2019-03-10 07:35:15,503: XML-RPC server binding to 0.0.0.0:0
[xmlrpc][INFO] 2019-03-10 07:35:15,504: Started XML-RPC server [http://heldev:42449/]
[rospy.init][INFO] 2019-03-10 07:35:15,505: ROS Slave URI: [http://heldev:42449/]
[rospy.impl.masterslave][INFO] 2019-03-10 07:35:15,505: _ready: http://heldev:42449/
[rospy.registration][INFO] 2019-03-10 07:35:15,507: Registering with master node http://localhost:11311
[xmlrpc][INFO] 2019-03-10 07:35:15,507: xml rpc node: starting XML-RPC server
[rospy.init][INFO] 2019-03-10 07:35:15,606: registered with master
[rospy.rosout][INFO] 2019-03-10 07:35:15,606: initializing /rosout core topic
[rospy.rosout][INFO] 2019-03-10 07:35:15,613: connected to core topic /rosout
[rospy.simtime][INFO] 2019-03-10 07:35:15,616: /use_sim_time is not set, will not subscribe to simulated time [/clock] topic
[rospy.internal][INFO] 2019-03-10 07:35:15,675: topic[/camera1/image_raw/compressed] adding connection to [http://heldev:34701/], count 0
[rospy.internal][INFO] 2019-03-10 07:35:15,852: topic[/rosout] adding connection to [/rosout], count 0
[rospy.core][INFO] 2019-03-10 07:36:06,050: signal_shutdown [signal-2]
[rospy.internal][INFO] 2019-03-10 07:36:06,069: topic[/rosout] removing connection to /rosout
[rospy.internal][INFO] 2019-03-10 07:36:06,070: topic[/camera1/image_raw/compressed] removing connection to http://heldev:34701/
[rospy.impl.masterslave][INFO] 2019-03-10 07:36:06,071: signal-2
[rosout][INFO] 2019-03-10 07:36:06,186: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4
[rosout][INFO] 2019-03-10 07:36:06,252: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4
[rospy.core][INFO] 2019-03-10 07:36:06,254: signal_shutdown [atexit]

[atexit]

During runtime ROS shows:

OpenCV: FFMPEG: tag 0x00000000/'????' is not supported with codec id 14 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  int (Brightness, 0, id = 980900): -64 to 64 (1)
  int (Contrast, 0, id = 980901): 0 to 64 (1)
  int (Saturation, 0, id = 980902): 0 to 128 (1)
  int (Hue, 0, id = 980903): -40 to 40 (1)
  bool (White Balance Temperature, Auto, 0, id = 98090c): 0 to 1 (1)
  int (Gamma, 0, id = 980910): 72 to 500 (1)
  int (Gain, 0, id = 980913): 0 to 100 (1)
  menu (Power Line Frequency, 0, id = 980918): 0 to 2 (1)
    0: Disabled
    1: 50 Hz
    2: 60 Hz
  int (White Balance Temperature, 16, id = 98091a): 2800 to 6500 (1)
  int (Sharpness, 0, id = 98091b): 0 to 6 (1)
  int (Backlight Compensation, 0, id = 98091c): 0 to 2 (1)
  menu (Exposure, Auto, 0, id = 9a0901): 0 to 3 (1)
  int (Exposure (Absolute), 16, id = 9a0902): 1 to 5000 (1)
  bool (Exposure, Auto Priority, 0, id = 9a0903): 0 to 1 (1)
Setting auto_focus is not supported
Setting focus_absolute is not supported
^C[image_header_republisher-6] killing on exit
[video_recorder-5] killing on exit
[velodyne_nodelet_manager_driver-2] killing on exit
[velodyne_nodelet_manager_cloud-3] killing on exit
[camera1/camera1-4] killing on exit
[velodyne_nodelet_manager-1] killing on exit
[INFO] [1552217766.186938]: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4
[INFO] [1552217766.252440]: [ros-video-recorder] Video Saved. path=/home/hel/usb_cam1.mp4

I was expecting OpenCV to use gstreamer by the appsrc line.

Also, how can I ensure OpenCV has gstreamer libraries compiled? with my ROS setup?