Since*
4.0
Mix several video input streams into one video stream.
A description of the accepted options follows.
- nb_inputs
-
The number of inputs. If unspecified, it defaults to 2.
- weights
-
Specify weight of each input video stream as sequence. Each weight is separated by space.
- duration
-
Specify how end of stream is determined.
- longest
-
The duration of the longest input. (default)
- shortest
-
The duration of the shortest input.
- first
-
The duration of the first input.