laravel Windows 上的 Php-ffmpeg “未知编码器 libfaac”
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Php-ffmpeg “Unknown encoder libfaac” on Windows
提问by Dev
I am using laravel 4.2.
我正在使用 Laravel 4.2。
I am working on a project in that user can upload a video and I need to transcode it that it can be played over all kind of devices.
我正在处理一个项目，该用户可以上传视频，我需要对其进行转码，以便可以在所有类型的设备上播放。
For transcoding I have added php-ffmpeg package from git hub in my project. According to the instructions I have downloaded ffmpeg package from http://ffmpeg.zeranoe.com/buildsand set the ffmpeg.exe's path into the environment variable Path.
对于转码，我在我的项目中从 git hub 添加了 php-ffmpeg 包。根据说明，我从http://ffmpeg.zeranoe.com/builds下载了 ffmpeg 包，并将 ffmpeg.exe 的路径设置为环境变量 Path。
Now, I tried code below to transcode an uploaded video :
现在，我尝试了下面的代码来对上传的视频进行转码：
$ffmpeg = FFMpeg\FFMpeg::create();
$video = $ffmpeg->open($video_path);
$format = new FFMpeg\Format\Video\X264();
$format->setKiloBitrate(1000)
->setAudioChannels(2)
->setAudioKiloBitrate(256);
$video->save($format, public_path().$path.$save_filename);
But it gives error as below :
但它给出了如下错误：
[ERROR] ffmpeg version N-70767-gd24af70 Copyright (c) 2000-2015 the FFmpeg developers
[ERROR] built with gcc 4.9.2 (GCC)
[ERROR] configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
[ERROR] libavutil 54. 20.100 / 54. 20.100
[ERROR] libavcodec 56. 28.100 / 56. 28.100
[ERROR] libavformat 56. 25.101 / 56. 25.101
[ERROR] libavdevice 56. 4.100 / 56. 4.100
[ERROR] libavfilter 5. 12.100 / 5. 12.100
[ERROR] libswscale 3. 1.101 / 3. 1.101
[ERROR] libswresample 1. 1.100 / 1. 1.100
[ERROR] libpostproc 53. 3.100 / 53. 3.100
[ERROR]
[ERROR] Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'http://localhost/ohvideo-ftp/public/temp/5ZPlIuU1AIgz8RR4p0bs.mp4':
[ERROR] Metadata:
[ERROR] major_brand : mp42
[ERROR] minor_version : 0
[ERROR] compatible_brands: mp42mp41isomavc1
[ERROR] creation_time : 2013-11-09 00:29:52
[ERROR] Duration: 00:00:30.12, start: 0.000000, bitrate: 417 kb/s
[ERROR] Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 381 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
[ERROR] Metadata:
[ERROR] creation_time : 2013-11-09 00:29:52
[ERROR] handler_name : L-SMASH Video Handler
[ERROR] encoder : AVC Coding
[ERROR] Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 32 kb/s (default)
[ERROR] Metadata:
[ERROR] creation_time : 2013-11-09 00:29:52
[ERROR] handler_name : L-SMASH Audio Handler
[ERROR] Unknown encoder 'libfaac'
[ERROR]
{"error":{"type":"FFMpeg\Exception\RuntimeException","message":"Encoding failed","file":"F:\wamp\www\ohvideo-ftp\vendor\php-ffmpeg\php-ffmpeg\src\FFMpeg\Media\Video.php","line":168}}
After searching alot, I found a link for the solution here, with note that
经过大量搜索后，我在这里找到了解决方案的链接，请注意
Zeranoe's ffmpeg does not contain libfaac support due to that encoder requiring --enable-nonfree which would result in a non-redistributable build.
Zeranoe 的 ffmpeg 不包含 libfaac 支持，因为该编码器需要 --enable-nonfree 这将导致不可重新分发的构建。
I don't get the solution. Can anybody help me to overcome this?
我不明白解决方案。有人能帮我克服这个吗？
Edit: (working code as below)
编辑：（工作代码如下）
I have created a CustomVideoclass the same like class FFMpeg\Format\Video\X264()as below:
我创建了一个与CustomVideo类相同的类FFMpeg\Format\Video\X264()，如下所示：
class CustomVideo extends FFMpeg\Format\Video\DefaultVideo
{
/** @var boolean */
private $bframesSupport = true;
public function __construct($audioCodec = 'libmp3lame', $videoCodec = 'libx264')
{
$this
->setAudioCodec($audioCodec)
->setVideoCodec($videoCodec);
}
/**
* {@inheritDoc}
*/
public function supportBFrames()
{
return $this->bframesSupport;
}
/**
* @param $support
*
* @return X264
*/
public function setBFramesSupport($support)
{
$this->bframesSupport = $support;
return $this;
}
/**
* {@inheritDoc}
*/
public function getAvailableAudioCodecs()
{
return array('libmp3lame');
}
/**
* {@inheritDoc}
*/
public function getAvailableVideoCodecs()
{
return array('libx264');
}
/**
* {@inheritDoc}
*/
public function getPasses()
{
return 2;
}
/**
* @return int
*/
public function getModulus()
{
return 2;
}
}
and updated the code to transcode video as below:
并更新了代码以转码视频，如下所示：
$ffmpeg = FFMpeg\FFMpeg::create();
$video = $ffmpeg->open($video_path);
$format = new CustomVideo();
$format->setKiloBitrate(1000)
->setAudioChannels(2)
->setAudioKiloBitrate(256);
$video->save($format, public_path().$path.$save_filename);
It has solved the Unknown encoder libfaacerror.
它已经解决了Unknown encoder libfaac错误。
采纳答案by aergistal
The required library is not included due to licensing.
由于许可，所需的库不包括在内。
Zeranoe FFmpeg - Why dont the builds include FAAC, FDK-AAC, libaacplus?
These libraries are not compatible with the GPL license and cannot be included without licensing the build as nonfree. A nonfree build cannot be publicly distributed.
Zeranoe FFmpeg - 为什么构建不包括 FAAC、FDK-AAC、libaacplus？
这些库与 GPL 许可不兼容，并且不能在未将构建许可为非自由的情况下包含在内。非自由构建不能公开分发。
You have the following solutions:
您有以下解决方案：
- Use another audio codec instead of AAC. There's a LAME MP3 encoder for example.
- Compile your own version of FFmpeg adding all the libraries you want See FFmpeg Compilation Guide
- 使用其他音频编解码器而不是 AAC。例如，有一个 LAME MP3 编码器。
- 编译您自己的 FFmpeg 版本，添加您想要的所有库 查看FFmpeg 编译指南
回答by karpy47
I just had the some problem, but solved it by defining a new audio-codec in the constructor. Instead of this line in the question...
我刚刚遇到了一些问题，但通过在构造函数中定义一个新的音频编解码器来解决它。而不是问题中的这一行......
$format = new FFMpeg\Format\Video\X264();
I used...
我用了...
$format = new FFMpeg\Format\Video\X264('libmp3lame', 'libx264');
回答by Jannie Theunissen
The official recommendationis to use the native FFmpeg AAC encoder or libfdk_aac instead:
该负责人建议是使用原生FFmpeg的AAC编码器或libfdk_aac代替：
$format = new FFMpeg\Format\Video\X264('aac', 'libx264');
