Hi I want to add watermark png image to video with hardcode substitle .srt file at same time what changes i should do the to following line
ffmpeg -i input.mkv -threads 0 -c:v libx264 -crf 28 -preset veryslow -vf "movie=watermark.png [watermark]; [in][watermark] overlay=0:0 [out]" output.mp4