您好我正在尝试使用 gem rvideo 对视频文件进行转码，但结果与我的预期不符。我已经从http://ffmpeg.zeranoe.com/builds/下载了 ffmpeg 文件，安装了 rvideo gem。
我发现如果不指定 ffmpeg_binary 它将无法工作并给出错误。我有几个问题，一个是我输入时的输出
require 'rvideo'
video = RVideo::Inspector.new(:file => "D:/The Vault/josh ruby/video transcoding/test1.mp4", :ffmpeg_binary => "C:/ffmpeg/bin/ffmpeg.exe")
当我输入上述命令时，我看到一团糟的输出，看起来像构建日期、配置选项等（包含在帖子底部）
但是我在文档中看到您可以输入类似的命令。
- 视频.fps
- 视频分辨率
他们只为我返回零。
你不能在 Windows 上使用 rvideo 吗？
从顶部输出：
=> #<RVideo::Inspector:0x213ba48 @ffmpeg_binary="C:/ffmpeg/bin/ffmpeg.exe", @filename="test1.mp4", @path="D:/The Vau
lt/josh ruby/video transcoding", @full_filename="D:/The Vault/josh ruby/video transcoding/test1.mp4", @raw_response=
"ffmpeg version N-51106-g17c1881 Copyright (c) 2000-2013 the FFmpeg developers\n built on Mar 19 2013 13:49:37 with
gcc 4.7.2 (GCC)\n configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bz
lib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable
-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-am
rwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspe
ex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-
libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib\n libavutil 52. 19.101 / 52. 19.101\n
libavcodec 55. 1.100 / 55. 1.100\n libavformat 55. 0.100 / 55. 0.100\n libavdevice 55. 0.100 / 55.
0.100\n libavfilter 3. 47.104 / 3. 47.104\n libswscale 2. 2.100 / 2. 2.100\n libswresample 0. 17
.102 / 0. 17.102\n libpostproc 52. 2.100 / 52. 2.100\nD:/The: No such file or directory\n", @unknown_format=t
rue>
更新：根据下面 rmtsukuru 的回答进行了更改，但最终得到了。另请注意，这是与上述文件不同的文件（在不同的电脑上）。
irb(main):002:0> response = %x(C:/ffmpeg/bin/ffmpeg.exe -i "C:/Users/Josh/Desktop/joshruby/videoTranscoding/test1.mp4")
ffmpeg version N-51205-gac9b056 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 22 2013 00:04:52 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnu
tls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable- libgsm --enable-libilbc --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-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxa
vs --enable-libxvid --enable-zlib
libavutil 52. 22.100 / 52. 22.100
libavcodec 55. 1.100 / 55. 1.100
libavformat 55. 0.100 / 55. 0.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 48.100 / 3. 48.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/Josh/Desktop/joshruby /videoTranscoding/test1.mp4':
Metadata:
major_brand : mp42
minor_version : 1
compatible_brands: isommp41avc1
creation_time : 2009-02-19 18:49:05
Duration: 00:00:08.04, start: 0.000000, bitrate: 3129 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 3009 kb/s, 25 fps, 25 tbr, 600 tbn, 50 tbc
Metadata:
creation_time : 2009-02-19 18:49:05
handler_name : ?Apple Video Media Handler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
creation_time : 2009-02-19 18:49:05
handler_name : ?Apple Sound Media Handler
Stream #0:2(eng): Data: none (mp4s / 0x7334706D), 0 kb/s
Metadata:
creation_time : 2009-02-19 18:49:05
handler_name : ?
Stream #0:3(eng): Data: none (mp4s / 0x7334706D), 0 kb/s
Metadata:
creation_time : 2009-02-19 18:49:05
At least one output file must be specified
=> ""