This refers to a high-definition digital release of the 2014 film Paddington

Yes, the "Paddington (2014) 1080p 10-bit BluRay 6CH x265 HEVC" file is generally a better choice for most modern viewers than standard 8-bit x264 encodes.

In side-by-side comparisons posted on fan forums (e.g., AvP, VideoHelp), users consistently rated 10-bit x265 BluRay rips of Paddington as “indistinguishable from source” even at half the bitrate of a good x264 encode.