When I convert a video with ffmpeg, and use mediaInfo to review the metadata, I see the followings for the video codec:
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : 1 Ref Frames
Whereas for some other videos, mediaInfo shows this:
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : CABAC / 4 Ref Frames
What are the differences between these two profiles and settings? Do they have any effects on the compression ratio/file sizes? Any pros/cons? My goal is to reduce the video file sizes at much as possible with negligible quality degradation.
