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Home Backend Development PHP Tutorial PHP+FFMPEG realizes automatic transcoding of videos into H264 standard Mp4 files

PHP+FFMPEG realizes automatic transcoding of videos into H264 standard Mp4 files

Mar 24, 2017 am 09:55 AM
ffmpeg mp4 php Transcode

PHP+FFMPEG realizes automatic transcoding of videos into H264 standard Mp4 files,

Configure the php.ini file

file_uploads = on ;//是否允許通過HTTP上傳文件的開關(guān)。默認為ON即是開
upload_tmp_dir ;//文件上傳至服務器上存儲臨時文件的地方,如果沒指定就會用系統(tǒng)默認的臨時文件夾
upload_max_filesize = 1024m ;//望文生意,即允許上傳文件大小的最大值。默認為2M,我們設(shè)置為1G
post_max_size = 1024m ;//指通過表單POST給PHP的所能接收的最大值,我們也設(shè)置為1G

max_execution_time = 3600 ;//每個PHP頁面運行的最大時間值(秒),默認30秒,設(shè)置為一小時,因為后面轉(zhuǎn)碼時間很久。
max_input_time = 36000 ;//每個PHP頁面接收數(shù)據(jù)所需的最大時間,默認60秒
memory_limit = 8m ;//每個PHP頁面所吃掉的最大內(nèi)存,默認8M

File upload plug-in

Flame Rain recommends that you use uploadify. Uploadify is an upload plug-in for JQuery that implements progress display. The plug-in installation is simple and can be skipped here.
But there is a problem that needs to be paid attention to. The session will be lost in non-IE browsers. After checking a lot of information, the final reason is:

Because uploadify uses a flash client, and the useragent it generates is different from The user-agent of the browser is different.

Final solution:

//在upmodify上傳參數(shù)中加入session參數(shù),如下:
scriptData: {"SESSION_ID":""},
// 在服務端接收頁面加入以下代碼:
if(@$_REQUEST['SESSION_ID'] && ($session_id=$_REQUEST['SESSION_ID']) !=session_id()){
session_destroy();
session_id($session_id);
@session_start(); 
}

This solves the problem that FLASH cannot transmit the page correctly

Video format conversion

Now compare under Linux The popular video format conversion software is FFMPEG. FFMPEG is a complete solution for recording, screenshots, converting and streaming audio and video. It is a leading audio/video codec library. In addition to FFMPEG, we need to transcode to H264 format and need an extension. (All software package download addresses are given at the end of the article)

Install the source code to install the h264 extension in centos 5.4 environment

tar -xjvf x264-snapshot-20120718-2245-stable.tar.bz2 
#進入解壓后的源文件目錄 
cd x264-snapshot-20120718-2245-stable/ 
./configure --prefix=/usr/local --enable-shared 
make
make install

//centos 5.4環(huán)境下安裝源碼安裝ffmpeg with h264擴展
tar -xjvf ffmpeg-2.1.1.tar.bz2
//進入解壓后目錄 
cd ffmpeg-2.1.1
./configure --enable-gpl --enable-libx264
make
make install
//重新加載配置
lcfonfig 
//測試是否安裝成功
ffmpeg

If you see the following content, the installation is successful:

ffmpeg version 2.1.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Dec 17 2013 23:32:40 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
configuration: --enable-libx264 --enable-gpl
libavutil 52. 48.101 / 52. 48.101
libavcodec 55. 39.101 / 55. 39.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 90.100 / 3. 90.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'

php calls ffmpeg to transcode video

$cmd = 'FFMPEG -i uploadfile/video/test.wmv -c:v libx264 -strict -2 uploadfile/mp4/test.mp4';
exec($cmd, $status);

Please make sure the exec function is turned on before running. Otherwise, please modify the php.ini file

Finally attach FFMPEG+H264 extension +YASM+apache_mod_h264

Related articles:

PHP converts video to MP4 and How to get the video preview

How to convert the video to mp4 format using memcoder in php

php downloads the flv file or the mp4 file cannot be played

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