Usage examples

[piercus]

Hello,

I'm am confused about how this ffmpeg app can be used in an iOS app.

Can you give example of usage in an Objective-C code ?

For example, is it possible to call an equivalent of this ffmpeg command line :

ffmpeg -i bg.mp4 -i video1.mp4 -i video2.mp4 -filter_complex \
"[0:v][1:v]setpts=PTS-STARTPTS,overlay=20:40[bg]; \
[bg][2:v]setpts=PTS-STARTPTS,overlay=(W-w)/2:(H-h)/2[v]; \
[1:a][2:a]amerge=inputs=2[a]" \
-map "[v]" -map "[a]" -ac 2 output.mp4

And replace bg.mp4, video1.mp4, video2.mp4 and output.mp4 with local file on the iOS device ?