How to convert horizontal 1920x1080 mp4 video to vertical 1080x1920 mp4 with actual content size of 1080x608
I know ffmpeg can do it, but don't know how to do it.
2 Answers
Use the scale filter.
ffmpeg -i in -vf scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:-1:-1 -c:a copy out
FFmpeg does it through the video filter - transpose; clockwise or counter-clockwise option is available.
