Options for filters with several inputs (framesync)

Some filters with several inputs support a common set of options. These options can only be set by name, not with the short notation.

'eof_action'

The action to take when EOF is encountered on the secondary input; it accepts one of the following values:

'repeat'

Repeat the last frame (the default).

'endall'

End both streams.

'pass'

Pass the main input through.

'shortest'

If set to 1, force the output to terminate when the shortest input terminates. Default value is 0.

'repeatlast'

If set to 1, force the filter to extend the last frame of secondary streams until the end of the primary stream. A value of 0 disables this behavior. Default value is 1.