X264-hdr

: The file might be a 10-bit H.264 encode. While this provides better color graduation than 8-bit, it is still not "true" HDR and often suffers from poor hardware compatibility. Conclusion

: HDR typically requires BT.2020 color primaries. Discussions among experts, such as those on r/ffmpeg , note that x264 lacks the necessary support for these HDR-specific color spaces.

You may occasionally see "x264-HDR" listed in file descriptions on forums or review sites like Wccftech . In these cases, the term is usually a or refers to a specific, non-standard workflow: x264-hdr

: While x264 can technically encode at 10-bit depth to reduce "banding" in gradients, very few hardware devices support 10-bit x264 playback. Most hardware decoders are optimized for 8-bit x264 or 10-bit x265. x264 vs. x265 for HDR

If you are looking to preserve HDR quality, is the industry standard. : The file might be a 10-bit H

: The video may have been converted from an HDR source to an SDR (Standard Dynamic Range) format using x264, losing the actual HDR benefits but retaining high detail.

To display HDR content correctly, a video file must communicate specific "bright" and "dark" metadata to a display. Discussions among experts, such as those on r/ffmpeg

: x265 offers superior compression, making it better suited for the massive data requirements of 4K resolution combined with HDR.