I'm upscaling a 200x200 video to 400x400 using the -sws_flags
scaling option to set the scaling algorithm. Now, I can't tell by the console output if some algorithm was used, neither by the looks of the output video when resized. And also the video remains the same size after trying different scaling algorithms. I now can't tell if some algorithm was used or not.
How can I found out or see in the console or even afterwards what scaling algorithm was used?
Command-line looks like this:
ffmpeg -i old_vid_200x200.mkv -vf scale=400:400 -sws_flags lanczos new_vid_400x400.mkv
Thanks
ffplay
also.