The video with different resolutions and bitrates that can be switched seamlessly, this concept is called MBR (Multi Bit Rate).Ī powerful tool that supports conversion of various video formats from one to another, including HLS both as input and output. Since end users have different screen sizes and different network performance, we want to create multiple renditions of HLS is one of the most prominent video streaming formats on desktop and mobile browsers.
Setting up HLS live streaming server using NGINXĬreating A Production Ready Multi Bitrate HLS VOD stream ¶ How to enable and disable P2P connections programmatically How to add a Custom Label to the analytics Since you're losing resolution and doing a transcode, it's never going to look perfectly the same as it did.Creating A Production Ready Multi Bitrate HLS VOD stream If a shot needs more bits to be encoded faithfully at that ratefactor, it just increases the bitrates for those frames. So you can set that number to wherever you want to make the tradeoff in terms of storage size vs visual quality. Preset veryslow is telling x264 "take a little extra CPU time to really make sure you're doing a good job optimizing for smaller filesize at the same quality"Ĭrf means "constant ratefactor" basically a constant quality. Lanczos says to use a specific high quality scaler to go from UHD to HD, you can look at other options here That having been said, you might be happy with ffmpeg -i foo.mkv -vf scale=1920x1080:flags=lanczos -c:v libx264 -preset veryslow -crf 10 -c:a copy bar.mkv
Remux, or remultiplexing, involves changing the container without changing the actual media streams within.
0 kommentar(er)
