FFmpeg: What parameters to set for video resizing?

Question

fmpeg

Hello!
Is it enough to execute the command:
ffmpeg -i <input> -filter:v scale=640:360 <output>
to resize the video and keep the quality at the same time? Maybe some more kosher flags, filters?

Answer 1

ffmpeg recompresses what it is not explicitly forbidden to recompress, and also uses the default compression for what it recompresses. For this reason, it is best, firstly, to explicitly tell him not to recompress the sound, and secondly, choose the appropriate codec and compression level for the video for your task, because he will still have to re-encode it after resizing.