Struct CrossfadeJoiner 

pub struct CrossfadeJoiner { /* private fields */ }

Joins two video inputs with a cross-dissolve transition.

Each input is loaded via a movie= source node. The last dissolve_duration seconds of input A overlap with the first dissolve_duration seconds of input B, producing an output shorter than simple concatenation by dissolve_duration.

When dissolve_duration is Duration::ZERO the clips are concatenated without a transition (equivalent to [VideoConcatenator::new(vec![input_a, input_b]).build()]).

Errors

Returns FilterError::CompositionFailed when:

• The clip duration cannot be probed (e.g. file not found).
• dissolve_duration exceeds the duration of either clip.

Examples

use ff_filter::CrossfadeJoiner;
use std::time::Duration;

let mut graph = CrossfadeJoiner::new("intro.mp4", "main.mp4", Duration::from_secs(1))
    .build()?;

while let Some(frame) = graph.pull_video()? {
    // encode or display `frame`
}

Implementations

impl CrossfadeJoiner

pub fn new( input_a: impl AsRef<Path>, input_b: impl AsRef<Path>, dissolve_duration: Duration, ) -> Self

Create a new CrossfadeJoiner.

dissolve_duration is the length of the cross-dissolve overlap. Pass Duration::ZERO for plain concatenation (no transition).

pub fn build(self) -> Result<FilterGraph, FilterError>

Builds a source-only FilterGraph that joins the two clips.

Errors

• FilterError::CompositionFailed — clip duration probe failed, or dissolve_duration exceeds a clip’s duration, or an FFmpeg graph-construction call failed.