When true, FFmpeg re-encodes the video using the platform's hardware encoder (h264_videotoolbox on iOS, h264_mediacodec on Android) for frame-accurate trimming. When false (default), uses stream copy (-c copy) which is much faster but can only cut at keyframes, so the actual start/end may drift by several seconds. Note: if the user applies any transform (flip/rotate/crop), re-encoding already happens regardless of this flag, so precise trimming comes for free in that case.
outputExt
string
Output file extension (e.g. "mp4", "wav").
removeAfterFailedToSavePhoto
boolean
Whether to remove the output file if saving to the photo library fails.
removeAfterSavedToPhoto
boolean
Whether to remove the output file after it has been saved to the photo library.
removeAudio
boolean
When true, strips the audio track from the output. Default false. In the editor, playback also starts muted, and the output has no audio even if the user unmutes.
saveToPhoto
boolean
Whether to save the output file to the device's photo library.
speed
number
Playback speed multiplier applied during export. 1.0 is normal speed, 2.0 is double speed, 0.5 is half speed. Valid range: 0.25–4.0. When not 1.0, re-encoding is forced regardless of enablePreciseTrimming.
