Use OPENCV players to create a video control (no sound)

Description: OpenCV Computer Vision Library, so use image or video processing, so that there is no sound in playing video temporarily

Software: Use OpenCV player (no sound)

Feature Description: Creates a new playback form. Join the progress bar to drag the video playback.

Flow chart:

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Function Description:

1. New Progress bar Cvcreattrackbar ("", "", &,frames,callback)

2, get total frame number Cvgetcaptureproperty (&,id)

Double Cvgetcaptureproperty (cvcapture* capture, int property_id); capture video capture structure. the property_id property identity. Can be one of the following:Cv_cap_prop_frame_count-The total number of frames in a video file

3. Callback function Cvset (&. ID, POS)

int Cvsetcaptureproperty (cvcapture* capture, int property_id, double value) The identifier for the property_id property. Can be one of the following:cv_cap_prop_pos_frames-Unit is the position of the frame number (only valid for video files)

Source:

#include "cv.h" #include "highgui.h" int g_slider_position=0; cvcapture* g_capture =null;void cvtrackcalllback (int pos) {  cvsetcaptureproperty (g_capture, Cv_cap_prop_pos_ FRAMES, POS);} int main (int argc, char** argv) {Cvnamedwindow ("Example3", cv_window_autosize); g_capture = cvcreatefilecapture ("Video Path") ; int frames = (int) cvgetcaptureproperty (g_capture,cv_cap_prop_frame_count);  if (frames!=0)    {     Cvcreatetrackbar ("Test", "Example3", &g_slider_position,frames,cvtrackcalllback);    }  iplimage* Frame;while (1) {frame = Cvqueryframe (g_capture) cvshowimage ("Example3", frame);  Cvwaitkey (0);} return 0;}

The execution structure is as follows:

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Use OPENCV players to create a video control (no sound)