I was having stuttering problems playing some mp4 files (e.g. 4K 4:2:2 10-bit AVC) in windows on vlc and windows media player. The files played back smoothly in Davinci Resolve so it was a codec issue. I had disabled Windows Store so the default way of installing the codec wouldn't work for me.
Filename : D:\Embrient Video Project\EMBRIENT a7iv MAY 28\C0187.MP4 MP4 Format : XAVC MP4 Codec ID : XAVC (XAVC/mp42/iso2) Video Format : AVC Format/Info : Advanced Video Codec Format profile : High 4:2:2 Intra@L5.1 Codec ID : avc1 Codec ID/Info : Advanced Video Coding Width : 3840 pixels Height : 2160 pixels Display aspect ratio : 16:9 Frame rate : 29.970 (30000/1001) FPS Chroma subsampling : 4:2:2 Bit depth : 10 bits Codec configuration box : avcC
I tried AJA and MPV / MPV.net and while they all got smooth playback they also had user interfaces I didn't like.
I found smplayer, which uses mpv for playback while providing a usable interface.
The second problem is that windows will not generate thumbnails for these codecs natively, Icaros is the standard solution for thumbnails.
I installed K-lite Codec Pack which includes Icaros.
