How can I use ffmpeg to copy subtitles from one video file to another?

To copy subtitles from one video file to another using ffmpeg, you can use the following command:

ffmpeg -i inputvideo.mp4 -i inputsubtitle.srt -c copy -scodec movtext outputvideo.mp4

This command will copy the subtitles from the inputsubtitle.srt file to the outputvideo.mp4 file without re-encoding the video.