Every call returns a new Bitmap instance which should be disposed by the caller. GenerateThumbnail method smartly generates a meaningful thumbnail for the video by seeking to a sensible time position and avoiding blank frames. Using (var videoThumbnailer = new (var thumbnail = ImageFormat.Jpeg) Sometimes you may only need to quickly generate a meaningful thumbnail for a video, in thatĬase you can use VideoThumbnailer class for that: VideoFrameReader class which reads a video frame by frame (any video file format on the planet), also allows seeking and provides info on the video. You can use VideoUltimate () from GleamTech for this purpose. My $timestamp = strftime("%a, %d %b %Y %H:%M:%S GMT", IMG, ' 'image/jpeg', -last_modified => $timestamp) My = stat($video_pathname) or die 'Unable to stat() video # so that we can set the HTTP last-modified header. # get the last-modified timestamp for the video in question, Handle_error 'No thumbnail created.' if ! -f $thumb_pathname $thumb_pathname = sprintf("%s/%8.8d.jpg", $thumb_dir, $frame)
# choose the highest numbered frame, since lower numbered +mp -frames $num_frames -vf scale=250:-3 \"$video_pathname\" > /dev/nu My $cmd = "mplayer -zoom -ss $thumb_offset -nosound -vo jpeg:outdir=/t $thumb_offset = int( $video_len * $thumb_offset_pct / 100 )
#MPLAYER THUMBNAILER SERIES#
# this mplayer command will produce a series of JPEG images, one of wh My ($video_len) = grep(/^ID_LENGTH=/, (`mplayer -identify \"$video_pat
Unlink $thumb_pathname or die if -f $thumb_pathname # TODO make this multi-user capable, so that muliple simultaneous inst My $video_pathname = param('dir') or die Print header(-type => 'text/plain'), $msg Txtfileadd.Text = "./images/upload" + "/" + temnow + ".jpg" Txtslt.Text = " Fail to generate thumbnail maybe due to incorrect image format" Response.Write("opener.SetTitleImg(""" & Txtslt.Text & """) ") Txtslt.Text = "./images/upload" + "/" + temnow + "t" + ".jpg" Newwidth = Image.Width / Image.Height * newheightĭim callb As ĭim anewimage = Image.GetThumbnailImage(newwidth, newheight, callb, New System.IntPtr)Īnewimage.Save(Server.MapPath("./images/upload" + "/" + temnow + "t" + ".jpg")) Newheight = Image.Height / Image.Width * newwidth Image = (Server.MapPath("./images/upload" + "/" + temnow + ".jpg")) 'Generate thumbnail image from uploaded video file Txtfileadd.Text = "The file length cannot be 0."ĭim temnow As String = ("yyMMddhhffffff") Private Sub Btnup_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnup.Click Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init Protected WithEvents Txtfileadd As .WebControls.TextBox Protected WithEvents Chkshow As .WebControls.CheckBox Protected WithEvents Chkonly As .WebControls.CheckBox Protected WithEvents Txt As .WebControls.TextBox
Protected WithEvents Txtslt As .WebControls.TextBox Protected WithEvents chkslt As .WebControls.CheckBox Protected WithEvents fileinfo As .WebControls.Label Protected WithEvents uplTheFile As .HtmlControls.HtmlInputFile Protected WithEvents Btnup As .WebControls.Button
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