EMGUCV Learning-Video and image transfer

In fact, the video to the picture in the previous article has some clues, in fact, is to read the video frame, and then save the frame is OK. Then you add a progress bar to beautify ... This code is easy to understand, or directly on the code bar.

Video to pictures

1         /// <summary>2         ///convert video to Picture3         /// </summary>4         /// <param name= "path" ></param>5          Public voidVideo2image (Objectpath)6         {7             Try8             {9                 //determine if a folder existsTen                 if(! Directory.Exists (filepath + filename +"\\")) One                 { A                     Try -                     { -                         //does not exist create folder theDirectory.CreateDirectory (filepath + filename +"\\"); -                     } -                     Catch { } -                 } +  -IntPtr Catchframe =cvinvoke.cvcreatefilecapture (path. ToString ()); +                 //get the total number of frames A                 varCount =Cvinvoke.cvgetcaptureproperty (Catchframe, Emgu.CV.CvEnum.CAP_PROP. Cv_cap_prop_frame_count); at                 //Video Width -                 intWD = (int) Cvinvoke.cvgetcaptureproperty (Catchframe, Emgu.CV.CvEnum.CAP_PROP. Cv_cap_prop_frame_width); -                 //Video Height -                 intHG = (int) Cvinvoke.cvgetcaptureproperty (Catchframe, Emgu.CV.CvEnum.CAP_PROP. Cv_cap_prop_frame_height); -                 ////Current frame position -                 //Cvinvoke.cvgetcaptureproperty (Catchframe, Emgu.CV.CvEnum.CAP_PROP. Cv_cap_prop_pos_frames); in                 ////Frame Frequency -                 //Cvinvoke.cvgetcaptureproperty (Catchframe, Emgu.CV.CvEnum.CAP_PROP. CV_CAP_PROP_FPS); to  + IntPtr frameimg; -                 inti =0; the                  *IntPtr grayimg = Cvinvoke.cvcreateimage (NewSize (WD, Hg), Emgu.CV.CvEnum.IPL_DEPTH. IPL_DEPTH_8U,1); $                  while((frameimg = Cvinvoke.cvqueryframe (catchframe))! =IntPtr.Zero)Panax Notoginseng                 { -                     //here I am converted to grayscale, save grayscale, small partners can directly save Frameimg the Cvinvoke.cvcvtcolor (frameimg, grayimg, Emgu.CV.CvEnum.COLOR_CONVERSION. Bgr2gray); +                     A                     stringPicname = filepath + filename +"\\image"+ (++i) +". jpg"; the                      + cvinvoke.cvsaveimage (Picname, grayimg, IntPtr.Zero); -  $                 } $                  -             } -             Catch(Exception ex) the             { - MessageBox.Show (ex. ToString ());Wuyi             } the  -}

Well, the important thing is that the picture goes to the video, here comes the decoder. I need to convert the video to MP4 format, so I chose the decoder for XviD.

1         /// <summary>2         ///convert pictures to videos3         /// </summary>4          Public voidImage2video ()5         {6             Try7             {8                 varFiles = Directory.GetFiles (filepath,"*.jpg");9                 intCount =files. Count ();Ten                 intIsColor =1; One                 //Frame Frequency A                 intfps =5; -                 inti =0; -                 stringPicname = files[0]; theBitmap map =NewBitmap (picname); -                 intFramew =map. Width; -                 intFrameh =map. Height; -                 stringVideoname = filepath +"\\out.mp4"; +                 varwriter = Cvinvoke.cvcreatevideowriter (Videoname, CVINVOKE.CV_FOURCC ('X','V','I','D'), FPS,NewSystem.Drawing.Size (Framew, Frameh), iscolor); - map. Dispose (); +Cvinvoke.cvnamedwindow ("Mainwin"); A                  while(I <count) at                 { -Picname =Files[i]; -                     varIMG =cvinvoke.cvloadimage (Picname, Emgu.CV.CvEnum.LOAD_IMAGE_TYPE. Cv_load_image_anycolor); -                     if(img = =NULL) -                     { -Cvinvoke.cvreleaseimage (refimg); in                         Continue; -                     } toCvinvoke.cvshowimage ("Mainwin", IMG); +                     BOOLFlag =cvinvoke.cvwriteframe (writer, img); -                     if(!flag) the                     { *Cvinvoke.cvreleaseimage (refimg); $                         Continue;Panax Notoginseng                     } -Cvinvoke.cvwaitkey ( -); theCvinvoke.cvreleaseimage (refimg); +i++; A                 } theCvinvoke.cvreleasevideowriter (refwriter); +Cvinvoke.cvdestroywindow ("Mainwin"); -             } $             Catch(Exception e) $             { - MessageBox.Show (e.tostring ()); -             } the}

That ' s all!

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EMGUCV Learning-Video and image transfer