720p is a common video resolution, H.265 is a video compression standard, and HDR might be part of it (maybe "hdirph" is a typo). The "esub" could refer to subtitles (external subtitles), and "upd" might be outdated or a typo for "update." The combination "720p HEVC HDR H.265" is possible. The user might be looking for a guide on converting or editing such a file, or maybe troubleshooting a specific file type.