Premiere Pro supports hardware-based decoding for H.264 and H.265 (HEVC) which can significantly improve performance with these codecs, but not all “flavors” of these codecs are supported depending on the bit depth and chroma subsampling used. In addition, support can change depending on the capability of the hardware in your system. In order to determine exactly what is supported, we decided to do our own testing to see exactly what types of H.264/5 media has hardware decoding support in Premiere Pro.
