Flip a video file

edit

Hi, I use gscam to play a video file. My config line in the launch file looks like this

<param name="gscam_config" value="filesrc location=$(arg FILENAME) ! decodebin ! ffmpegcolorspace"/>

I have videos that needs to be flipped vertically. I am trying to add the flip to this line, but it doesn't work. I have found this in the gstreamer doc :

http://www.freedesktop.org/software/g...

I have tried :

<param name="gscam_config" value="filesrc location=$(arg FILENAME) ! decodebin ! ffmpegcolorspace ! videoflip method=vertical-flip"/> but no luck.