From 6dfbf326ce5ad3b4cd83760763c0ed7807803998 Mon Sep 17 00:00:00 2001 From: Antonio Ospite Date: Sat, 10 Oct 2020 21:57:45 +0200 Subject: [PATCH 1/1] opencv_trail_effect.cpp: hardcode V4L2 VideoCapture backend on linux Hardcode the V4L2 backend on linux for now because the GStreamer one lacks some functionality, see: https://github.com/opencv/opencv/issues/18562 --- opencv_trail_effect.cpp | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/opencv_trail_effect.cpp b/opencv_trail_effect.cpp index bc5b187..c78f326 100644 --- a/opencv_trail_effect.cpp +++ b/opencv_trail_effect.cpp @@ -131,7 +131,14 @@ int main(int argc, char *argv[]) if (!input_file.empty()) { inputVideo.open(input_file); } else { +#ifdef __linux__ + // XXX Hardcode the V4L2 backend on linux for now because the + // GStreamer one lacks some functionality, see: + // https://github.com/opencv/opencv/issues/18562 + inputVideo.open(0, cv::CAP_V4L2); +#else inputVideo.open(0); +#endif } if (!inputVideo.isOpened()) { -- 2.1.4