ubuntu 装配 ffmpeg php-ffmpeg

ubuntu 安装 ffmpeg php-ffmpeg

?? 最近在做一个视频网站安装本地环境费了不少时间。本地是ubuntu 9.10 而服务器是redhat as4 所以到时候本人会把服务器安装过程和大家分享出来。

本人环境如下

php —- 5.210apache 2.2ubuntu 9.10

ffmpeg 功能很强大包括视频抓图，视频信息，视频转换，在线视频录制，而且是免费的。所有一般的视频网站都会采用他。本人首先是采用编译安装，但是一直都没有成功。编译过程中出现了很多问题。安装要使用ffmpeg往往需要编译很多包。感觉很麻烦。这些包又依赖于很多其他包。安装顺序也有要求。所以放弃了。最终采用ubuntu 强大的 apt-get (使用dpkg进行安装) 进行安装（当然cenos,red hat这类使用rpm的系统都可以使用yum进行安装,具体的安装方法可以在本站进行查找）.apt-get 安装步骤如下:
sudo apt-get update ##更新以下源
sudo apt-get install ffmpeg
sudo apt-get install php5-ffmpeg
sudo apt-get install mencoder
sudo apt-get install flvtool2 ##视频转换flv
sudo apt-get install lame ##音频
sudo apt0get install yasm编译安装ffmpeg 如下:
从 http://ffmpeg.mplayerhq.hu 下载
./configure –help ##查看有那些参数
./configure–prefix=/usr–enable-gpl–enable-shared–enable-libmp3lame–enable-libamr_nb–enable-libogg–enable-libvorbis–enable-libxvid–enable-liba52–enable-liba52bin–enable-pp–enable-libfaad–enable-libfaadbin–enable-libfaac–enable-pthreads–disable-ffserver–enable-x11grab
如果报错则安装该包，或者直接去掉该参数，只需要配置自己使用过程中需要使用到的就行了。
make & make install
其他的则一个一个的下载解压在编译就是了。

下面是php-ffmpeg 使用的api。功能是很少了。

$movie = new ffmpeg_movie(String path_to_media, boolean persistent)Open a video or audio file and return it as an object.path_to_media - File path of video or audio file to open.persistent - Whether to open this media as a persistent resource. See the PHP documentation for more info about persistent resources$movie->getDuration()Return the duration of a movie or audio file in seconds.$movie->getFrameCount()Return the number of frames in a movie or audio file.$movie->getFrameRate()Return the frame rate of a movie in fps.$movie->getFilename()Return the path and name of the movie file or audio file.$movie->getComment()Return the comment field from the movie or audio file.$movie->getTitle()Return the title field from the movie or audio file.$movie->getAuthor() alias $movie->getArtist()Return the author field from the movie or the artist ID3 field from an mp3 file.$movie->getCopyright()Return the copyright field from the movie or audio file.$movie->getArtist()Return the artist ID3 field from an mp3 file.$movie->getGenre()Return the genre ID3 field from an mp3 file.$movie->getTrackNumber()Return the track ID3 field from an mp3 file.$movie->getYear()Return the year ID3 field from an mp3 file.$movie->getFrameHeight()Return the height of the movie in pixels.$movie->getFrameWidth()Return the width of the movie in pixels.$movie->getPixelFormat()Return the pixel format of the movie.$movie->getBitRate()Return the bit rate of the movie or audio file in bits per second.$movie->getVideoBitRate()Return the bit rate of the video in bits per second.NOTE: This only works for files with constant bit rate. $movie->getAudioBitRate()Return the audio bit rate of the media file in bits per second.$movie->getAudioSampleRate()Return the audio sample rate of the media file in bits per second.$movie->getFrameNumber()Return the current frame index.$movie->getVideoCodec()Return the name of the video codec used to encode this movie as a string.$movie->getAudioCodec()Return the name of the audio codec used to encode this movie as a string.$movie->getAudioChannels()Return the number of audio channels in this movie as an integer.$movie->hasAudio()Return boolean value indicating whether the movie has an audio stream.$movie->hasVideo()Return boolean value indicating whether the movie has a video stream.$movie->getFrame([Integer framenumber])Returns a frame from the movie as an ffmpeg_frame object. Returns false if the frame was not found.framenumber - Frame from the movie to return. If no framenumber is specified, returns the next frame of the movie.$movie->getNextKeyFrame()Returns the next key frame from the movie as an ffmpeg_frame object. Returns false if the frame was not found.

?如果需要给视频抓图择需要使用shell脚本。也就是用到php当中的(system,exec,passthru)这类执行外部命令函数。
往往很多服务器都将种类函数视为危险函数屏蔽掉了。所以想做视频网站对服务器的配置要求比较高。
当然最好是自己的独立服务器。vps 也可以。随便你怎么整都可以。

?

测试用例：ffmpeg-execute.php

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