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--- hdr_dolby_vision [2023-03-16 11:00:57] – [HDR (Dolby Vision)] manfred
+++ hdr_dolby_vision [2023-03-16 11:01:48] (aktuell) – gelöscht manfred
@@ Zeile 1: / Zeile 1: @@
-====== HDR (High Dynamic Range / Dolby Vision) ======
-HDR10 ist ein Open-Source-Format, das von vielen TV- und Videomonitorherstellern, Spielsystemen und Streaming-Plattformen unterstützt wird. Es nutzt den ''Rec. 2020''-Farbraum, ''10-Bit''-Sampling und ''SMPTE ST 2084 (PQ)''-Übertragungsfunktion sowie statische Metadatenwerte für Elemente wie ''MaxCLL (Maximum Content Light Level)'' und ''MaxFALL (Maximum Frame-Average Light Level)''.
-===== VP9 =====
-===== AV1 =====
-[[https://github.com/rigaya/QSVEnc/issues/92]]
-  # --colormatrix bt2020nc --colorprim bt2020 --transfer smpte2084 --master-display G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,500) --max-cll 1000,300
-===== x265 =====
-  * [[https://codecalamity.com/encoding-uhd-4k-hdr10-videos-with-ffmpeg/]]
-  * [[https://codecalamity.com/encoding-settings-for-hdr-4k-videos-using-10-bit-x265/]]
-Extract the Mastering Display metadata:
-  > ffprobe -hide_banner -loglevel warning -select_streams v -print_format json -show_frames -read_intervals "%+#1" -show_entries "frame=color_space,color_primaries,color_transfer,side_data_list,pix_fmt" -i GlassBlowingUHD.mp4
-<code json>
-{ "frames": [
-        {
-            "pix_fmt": "yuv420p10le",
-            "color_space": "bt2020nc",
-            "color_primaries": "bt2020",
-            "color_transfer": "smpte2084",
-            "side_data_list": [
-                {
-                    "side_data_type": "Mastering display metadata",
-                    "red_x": "35400/50000",
-                    "red_y": "14600/50000",
-                    "green_x": "8500/50000",
-                    "green_y": "39850/50000",
-                    "blue_x": "6550/50000",
-                    "blue_y": "2300/50000",
-                    "white_point_x": "15635/50000",
-                    "white_point_y": "16450/50000",
-                    "min_luminance": "50/10000",
-                    "max_luminance": "40000000/10000"
-                },
-                {
-                    "side_data_type": "Content light level metadata",
-                    "max_content": 0,
-                    "max_average": 0
-} ] } ] }
-</code>
-  G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(40000000, 50)
-Convert the video
-  > ffmpeg  -i GlassBlowingUHD.mp4 -map 0 -c:v libx265 -x265-params hdr-opt=1:repeat-headers=1:colorprim=bt2020:transfer=smpte2084:colormatrix=bt2020nc:master-display=G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(40000000,50):max-cll=0,0 -crf 20 -preset veryfast -pix_fmt yuv420p10le GlassBlowingConverted.mkv
-==== Extracting and encoding with HDR10+ metadata ====
-Check to make sure your video has HDR10+ information it can read.
-  > ffmpeg -loglevel panic -i input.mkv -c:v copy -vbsf hevc_mp4toannexb -f hevc - | hdr10plus_parser --verify -
-  Parsing HEVC file for dynamic metadata…
-  Dynamic HDR10+ metadata detected.
-Once you confirmed it exists, extract it to a json file
-  > ffmpeg -i input.mkv -c:v copy -vbsf hevc_mp4toannexb -f hevc - | hdr10plus_parser -o metadata.json -
-You just need to pass the metadata file via the ''dhdr10-info'' option in the ''x265-params''.
-And don’t forget to add your audio and subtitle settings!
-  > ffmpeg.exe -i input.mkv -c:v libx265 -pix_fmt yuv420p10le -x265-params "colorprim=bt2020:transfer=smpte2084:colormatrix=bt2020nc:master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1):max-cll=1016,115:hdr10=1:dhdr10-info=metadata.json" -crf 20 -preset medium "output.mkv"
-Using custom compiled x265
-  > ffmpeg -loglevel panic -y -i input.mkv -to 30.0 -f yuv4mpegpipe -strict -1 - | x265 - --y4m --crf=20 --repeat-headers --hdr10 --colorprim=bt2020 --transfer=smpte2084 --colormatrix=bt2020nc --master-display="G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1)" --max-cll="1016,115" -D 10 --dhdr10-info=metadata.json output.hevc
-Saving Dolby Vision
-  > ffmpeg -i GlassBlowing.mp4 -f yuv4mpegpipe -strict -1 -pix_fmt yuv420p10le - | x265-10b - --input-depth 10 --output-depth 10 --y4m --preset veryfast --crf 22 --master-display "G(8500,39850)B(6550,2300)R(35400,14600)WP(15635,16450)L(40000000,50)" --max-cll "0,0" --colormatrix bt2020nc --colorprim bt2020 --transfer smpte2084 --dolby-vision-rpu glass.rpu --dolby-vision-profile 8.1 --vbv-bufsize 20000 --vbv-maxrate 20000 glass_dv.hevc