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要将视频转换为与 HTML5 视频兼容的格式,我编写了以下脚本:

    $srcFile = "name/of/the/video.mp4";
    $destFile = "/media/video/newfilename";
    $ffmpegPath = "/usr/local/bin/ffmpeg";
    $flvtool2Path = "/usr/local/bin/flvtool2";

    // Create our FFMPEG-PHP class
    $ffmpegObj = new ffmpeg_movie($srcFile);
    // Save our needed variables
    $srcWidth = makeMultipleTwo($ffmpegObj->getFrameWidth());
    $srcHeight = makeMultipleTwo($ffmpegObj->getFrameHeight());
    $srcFPS = $ffmpegObj->getFrameRate();
    $srcAB = intval($ffmpegObj->getAudioBitRate()/1000);
    $srcAR = $ffmpegObj->getAudioSampleRate();
    $srcVB = floor($ffmpegObj->getVideoBitRate()/1000); 


    // Call our convert using exec() to convert to the three file types needed by HTML5
    exec($ffmpegPath . " -i ". $srcFile ." -vcodec libx264 -vpre hq -vpre ipod640 -b ".$srcVB."k -bt 100k -acodec libfaac -ab " . $srcAB . "k -ac 2 -s " . $srcWidth . "x" . $srcHeight . " ".$destFile.".mp4");

    exec($ffmpegPath . " -i ". $srcFile ." -vcodec libvpx -r ".$srcFPS." -b ".$srcVB."k -acodec libvorbis -ab " . $srcAB . " -ac 2 -f webm -g 30 -s " . $srcWidth . "x" . $srcHeight . " ".$destFile.".webm");

    exec($ffmpegPath . " -i ". $srcFile ." -vcodec libtheora -r ".$srcFPS." -b ".$srcVB."k -acodec libvorbis -ab " . $srcAB . "k -ac 2 -s " . $srcWidth . "x" . $srcHeight . " ".$destFile.".ogv");

它应该接受任何输入视频类型并将其转换为 mp4、ogv 和 webm。当我在 .mov 文件上运行脚本时,它返回一个 mp4 和 ogv 文件,但不返回 webm。当我在 .mp4 文件上运行它时,它根本不返回任何转换后的文件。我转换文件的方式有问题吗?有什么帮助吗?

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1 回答 1

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您可以在命令行中运行 CMD 以查看问题所在,或者在 php 代码中添加每个 EXEC 的变量结尾

exec($ffmpegPath . " -i ". $srcFile ." -vcodec libx264 -vpre hq -vpre ipod640 -b ".$srcVB."k -bt 100k -acodec libfaac -ab " . $srcAB . "k -ac 2 -s " . $srcWidth . "x" . $srcHeight . " ".$destFile.".mp4" , $VARIABLE );

var_dump($VARIABLE);

看看你得到什么样的错误:)

于 2011-12-11T00:31:37.820 回答