使用FFmpeg旋转视频

我一直在尝试使用FFmpeg旋转视频。我正在处理竖屏模式下拍摄的iPhone视频。我知道如何使用MediaInfo（非常好的库）确定当前旋转角度，但现在我遇到了FFmpeg的问题。

根据我所读的，你需要使用vfilter选项。根据我所看到的，它应该是这个样子：

ffmpeg -vfilters "rotate=90" -i input.mp4 output.mp4

然而，我无法使它正常工作。首先，-vfilters不再存在了，现在改为-vf。其次，我遇到了以下错误：

No such filter: 'rotate'
Error opening filters!

据我所知，我拥有一个 FFmpeg 的全选项构建版本。运行 ffmpeg -filters 显示如下内容：

Filters:
anull            Pass the source unchanged to the output.
aspect           Set the frame aspect ratio.
crop             Crop the input video to x:y:width:height.
fifo             Buffer input images and send them when they are requested.
format           Convert the input video to one of the specified pixel formats.
hflip            Horizontally flip the input video.
noformat         Force libavfilter not to use any of the specified pixel formats
 for the input to the next filter.
null             Pass the source unchanged to the output.
pad              Pad input image to width:height[:x:y[:color]] (default x and y:
 0, default color: black).
pixdesctest      Test pixel format definitions.
pixelaspect      Set the pixel aspect ratio.
scale            Scale the input video to width:height size and/or convert the i
mage format.
slicify          Pass the images of input video on to next video filter as multi
ple slices.
unsharp          Sharpen or blur the input video.
vflip            Flip the input video vertically.
buffer           Buffer video frames, and make them accessible to the filterchai
n.
color            Provide an uniformly colored input, syntax is: [color[:size[:ra
te]]]
nullsrc          Null video source, never return images.
nullsink         Do absolutely nothing with the input video.

虽然拥有vflip和hflip选项很好，但它们并不能满足我的需求。我需要能够旋转视频至少90度的功能。如果还有270度的选项，那就更好了。旋转选项去哪里了？