FFMPEG 说文件不存在，但是它存在

Question

我通过streamio-FFMPEG Rails gem \xe2\x80\x93 使用 FFMPEG https://github.com/streamio/streamio-ffmpeg

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由于某种原因，当尝试对视频文件（确实存在）进行转码时，FFMPEG 表示该文件不存在。

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这是 Rails 控制台的一些输出，展示了我的头痛之处：

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1.9.3p125 :001 > File.exist?("/Applications/MAMP/htdocs/video-app/public/uploads/tmp/20131208-1416-1234-0984/videotest.mp4")\n => true \n\n1.9.3p125 :002 > FFMPEG::Movie.new("/Applications/MAMP/htdocs/video-app/public/uploads/tmp/20131208-1416-1234-0984/videotest.mp4")\nErrno::ENOENT: No such file or directory - ffmpeg -i /Applications/MAMP/htdocs/video-app/public/uploads/tmp/20131208-1416-1234-0984/videotest.mp4\n  from /Users/my-comp/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/open3.rb:202:in `spawn\'\n  from /Users/my-comp/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/open3.rb:202:in `popen_run\'\n  from /Users/my-comp/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/1.9.1/open3.rb:90:in `popen3\'\n  from /Users/my-comp/.rvm/gems/ruby-1.9.3-p125@video-app/gems/streamio-ffmpeg-1.0.0/lib/ffmpeg/movie.rb:17:in `initialize\'\n  from (irb):2:in `new\'\n  from (irb):2\n  from /Users/my-comp/.rvm/gems/ruby-1.9.3-p125@video-app/gems/railties-3.2.8/lib/rails/commands/console.rb:47:in `start\'\n  from /Users/my-comp/.rvm/gems/ruby-1.9.3-p125@video-app/gems/railties-3.2.8/lib/rails/commands/console.rb:8:in `start\'\n  from /Users/my-comp/.rvm/gems/ruby-1.9.3-p125@video-app/gems/railties-3.2.8/lib/rails/commands.rb:41:in `<top (required)>    \'\n  from script/rails:6:in `require\'\n  from script/rails:6:in `<main>\'\n1.9.3p125 :003 > \n

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任何帮助，将不胜感激。

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Answer 1

看起来它找不到ffmpeg二进制文件本身，而不是您指定的文件。在调用构造函数之前尝试设置 FFMPEG 的完整路径：

FFMPEG.ffmpeg_binary = '/usr/local/bin/ffmpeg'