can't use "-vf" to rotate video on linux
|Reported by:||resonancez||Owned by:|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||yes|
I installed ffmpeg on linux red hat server and when I use cmd like
path/to/ffmpeg -i path/to/inputfile -vf "vflip" path/to/outputfile
the terminal said: "unrecognize option: "-vf" " but another functions such as convert video, screen shot, set size video etc. can use normally.
Please tell me how to resolve this problem