opencv io_error ai_generated true

VideoCapture: Failed to open video source

ID: opencv/video-capture-failed

Also available as: JSON · Markdown
78%Fix Rate
83%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
4 active — — —

Root Cause

Cannot open camera or video file.

generic

Workarounds

  1. 88% success Check device exists: ls /dev/video* and permissions
  2. 85% success Install GStreamer backend: apt-get install libgstreamer1.0-dev

Dead Ends

Common approaches that don't work:

  1. Try all camera indices 0-10 72% fail

    Slow and unreliable

  2. Use raw V4L2 instead 70% fail

    Complex and non-portable