Video Playback Sample App

Video Playback Sample user guide.

Introduction

nvx_sample_player demonstrates basic image and video I/O facilities and camera access.

nvx_sample_player is installed in the following directory:

/usr/share/visionworks/sources/samples/player

For the steps to build sample applications, see the Samples and Demos section for your OS.

Executing the Player Sample

./nvx_sample_player [options]

Command Line Options

This topic provides a list of supported options and the values they consume.

-s, --source

• Parameter: [inputUri]
• Description: Specifies the input URI. Accepted parameters include a video (in .avi format), an image or an image sequence (.png, .jpg, .jpeg, .bmp, .tiff), camera to grab frames.
• Usage:
  • --source=/path/to/video.avi for video
  • --source=/path/to/image.png for image
  • --source=/path/to/image_%04d_sequence.png for image sequence
  • --source="device:///v4l2?index=0" for the first V4L2 camera
  • --source="device:///v4l2?index=1" for the second V4L2 camera.
  • --source="device:///nvcamera?index=0" for the GStreamer NVIDIA camera (Jetson TX1 only).
  • --source="device:///nvmedia?config=dvp-ov10635-yuv422-ab-e2379&number=4" for the GStreamer NVIDIA camera (Vibrante for Linux only).

Note

The V4L platform has a permissions issue. The hardware decoder is used and the sample must be executed with super user permissions, i.e., with sudo.

-h, --help

• Description: Prints the help message.

Operational Keys

• Use Space to pause/resume the sample.
• Use ESC to close the sample.