PHP converts videos, screenshots, and thumbnails Based on ffmpeg.

PHP converts videos Based on ffmpeg and generates thumbnails.

This example describes how PHP converts videos Based on ffmpeg and generates thumbnails. We will share this with you for your reference. The details are as follows:

Here we integrate ffmpeg with the thumbnail generation:

Include ("ImageResize. class. php ") // convert video $ cmd =" ffmpeg.exe-I starwar. avi-AB 56-ar 22050-B 500-r 15-s 320x240 1.flv"; exec ($ cmd); // video $ cmd = "ffmpeg.exe-I starwar. avi-f image2-ss 10-s 400*300-vframes 1 1.jpg"; exec ($ cmd); // generate a thumbnail $ thumbnail = new ImageResize (); $ thumbnail-> resizeimage ("1.jpg", 30,30, 0," small1.jpg "); class ImageResize {// image type var $ type; // actual width var $ width; // actual height var $ height; // Var $ resize_width after the image is changed; // var $ resize_height after the image is changed; // whether to cut the image var $ cut; // var $ srcimg of the source image; // target image address var $ dstimg; // a newly created image var $ im; function resizeimage ($ img, $ wid, $ hei, $ c, $ dstpath) {$ this-> srcimg = $ img; $ this-> resize_width = $ wid; $ this-> resize_height = $ hei; $ this-> cut = $ c; // image type $ this-> type = strtolower (substr (strrchr ($ this-> srcimg ,". "), 1); // initialize the image $ this-> initi_img (); // target image address $ this-> Dst_img ($ dstpath); // -- $ this-> width = imagesx ($ this-> im); $ this-> height = imagesy ($ this-> im ); // generate an image $ this-> newimg (); ImageDestroy ($ this-> im);} function newimg () {// ratio of the changed image $ resize_ratio = ($ this-> resize_width)/($ this-> resize_height ); // ratio of the actual image $ ratio = ($ this-> width)/($ this-> height); if ($ this-> cut) = "1 ") {// if ($ ratio >=$ resize_ratio) {$ newimg = imagecreatetruecolor ($ this-> resize_width, $ This-> resize_height); imagecopyresampled ($ newimg, $ this-> im, 0, 0, 0, 0, $ this-> resize_width, $ this-> resize_height, ($ this-> height) * $ resize_ratio), $ this-> height); ImageJpeg ($ newimg, $ this-> dstimg );} // if ($ ratio <$ resize_ratio) {$ newimg = imagecreatetruecolor ($ this-> resize_width, $ this-> resize_height); imagecopyresampled ($ newimg, $ this-> im, 0, 0, 0, 0, $ this-> resize_width, $ this-> resize _ Height, $ this-> width, ($ this-> width)/$ resize_ratio); ImageJpeg ($ newimg, $ this-> dstimg );}} else {// undo graph if ($ ratio >=$ resize_ratio) {$ newimg = imagecreatetruecolor ($ this-> resize_width, ($ this-> resize_width)/$ ratio ); imagecopyresampled ($ newimg, $ this-> im, 0, 0, 0, 0, $ this-> resize_width, ($ this-> resize_width)/$ ratio, $ this-> width, $ this-> height); ImageJpeg ($ newimg, $ this-> dstimg);} if ($ ratio <$ res Ize_ratio) {$ newimg = imagecreatetruecolor ($ this-> resize_height) * $ ratio, $ this-> resize_height); imagecopyresampled ($ newimg, $ this-> im, 0, 0, 0, 0, ($ this-> resize_height) * $ ratio, $ this-> resize_height, $ this-> width, $ this-> height ); imageJpeg ($ newimg, $ this-> dstimg) ;}}// initialize the image function initi_img () {if ($ this-> type = "jpg ") {$ this-> im = imagecreatefromjpeg ($ this-> srcimg);} if ($ this-> type = "gif ") {$ This-> im = imagecreatefromgif ($ this-> srcimg);} if ($ this-> type = "png ") {$ this-> im = imagecreatefrompng ($ this-> srcimg);} if ($ this-> type = "bmp ") {$ this-> im = $ this-> imagecreatefrombmp ($ this-> srcimg) ;}// function dst_img ($ dstpath) {$ full_length = strlen ($ this-> srcimg); $ type_length = strlen ($ this-> type); $ name_length = $ full_length-$ type_length; $ name = substr ($ this-> srcimg, 0, $ name_le Ngth-1); $ this-> dstimg = $ dstpath; // echo $ this-> dstimg;} function ConvertBMP2GD ($ src, $ dest = false) {if (! ($ Src_f = fopen ($ src, "rb") {return false;} if (! ($ Dest_f = fopen ($ dest, "wb") {return false;} $ header = unpack ("vtype/Vsize/v2reserved/Voffset", fread ($ src_f, 14); $ info = unpack ("Vsize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vncolor/Vimportant", fread ($ src_f, 40); extract ($ info); extract ($ header); if ($ type! = 0x4D42) {// signature "BM" return false;} $ palette_size = $ offset-54; $ ncolor = $ palette_size/4; $ gd_header = ""; // true-color. palette $ gd_header. = ($ palette_size = 0 )? "\ XFF \ xFE": "\ xFF"; $ gd_header. = pack ("n2", $ width, $ height); $ gd_header. = ($ palette_size = 0 )? "\ X01": "\ x00"; if ($ palette_size) {$ gd_header. = pack ("n", $ ncolor);} // no transparency $ gd_header. = "\ xFF"; fwrite ($ dest_f, $ gd_header); if ($ palette_size) {$ palette = fread ($ src_f, $ palette_size ); $ gd_palette = ""; $ j = 0; while ($ j <$ palette_size) {$ B = $ palette {$ j ++ }; $ g = $ palette {$ j ++}; $ r = $ palette {$ j ++}; $ a = $ palette {$ j ++}; $ gd_palette. = "$ r$ g $ B $ a" ;}$ gd_palette. = str _ Repeat ("\ x00 \ x00 \ x00 \ x00", 256-$ ncolor); fwrite ($ dest_f, $ gd_palette);} $ scan_line_size = ($ bits * $ width) + 7)> 3; $ scan_line_align = ($ scan_line_size & 0x03 )? 4-($ scan_line_size & 0x03): 0; for ($ I = 0, $ l = $ height-1; $ I <$ height; $ I ++, $ l --) {// BMP stores scan lines starting from bottom fseek ($ src_f, $ offset + ($ scan_line_size + $ scan_line_align) * $ l )); $ scan_line = fread ($ src_f, $ scan_line_size); if ($ bits = 24) {$ gd_scan_line = ""; $ j = 0; while ($ j <$ scan_line_size) {$ B = $ scan_line {$ j ++}; $ g = $ scan_line {$ j ++}; $ r = $ scan_line {$ j ++}; $ gd _ Scan_line. = "\ x00 $ r$ g $ B" ;}} else if ($ bits = 8) {$ gd_scan_line = $ scan_line;} else if ($ bits = 4) {$ gd_scan_line = ""; $ j = 0; while ($ j <$ scan_line_size) {$ byte = ord ($ scan_line {$ j ++ }); $ p1 = chr ($ byte> 4); $ p2 = chr ($ byte & 0x0F); $ gd_scan_line. = "$ p1 $ p2";} $ gd_scan_line = substr ($ gd_scan_line, 0, $ width);} else if ($ bits = 1) {$ gd_scan_line = ""; $ j = 0; while ($ j <$ scan_line_size) {$ Byte = ord ($ scan_line {$ j ++}); $ p1 = chr (int) ($ byte & 0x80 )! = 0); $ p2 = chr (int) ($ byte & 0x40 )! = 0); $ p3 = chr (int) ($ byte & 0x20 )! = 0); $ p4 = chr (int) ($ byte & 0x10 )! = 0); $ p5 = chr (int) ($ byte & 0x08 )! = 0); $ p6 = chr (int) ($ byte & 0x04 )! = 0); $ p7 = chr (int) ($ byte & 0x02 )! = 0); $ p8 = chr (int) ($ byte & 0x01 )! = 0); $ gd_scan_line. = "$ p1 $ p2 $ p3 $ p4 $ p5 $ p6 $ p7 $ p8";} $ gd_scan_line = substr ($ gd_scan_line, 0, $ width );} fwrite ($ dest_f, $ gd_scan_line);} fclose ($ src_f); fclose ($ dest_f); return true;} function imagecreatefrombmp ($ filename) {$ tmp_name = tempnam ("/tmp", "GD"); if ($ this-> ConvertBMP2GD ($ filename, $ tmp_name )) {$ img = imagecreatefromgd ($ tmp_name); unlink ($ tmp_name); return $ img;} return false ;}}

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