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本帖最后由 bluejd 于 2016-3-1 14:42 编辑
2/29日更新的MediaInfo 0.7.83版本已经开始支持对于HDR视频的分析。
MediaInfo change log:
Version 0.7.83, 2016-02-29
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+ HEVC: Maximum Content Light Level (MaxCLL) and Maximum Frame-Average Light Level (MaxFALL), metadata mandated by CEA-861.3 for HDR support
+ HEVC: Mastering display color primaries and luminance (based on SMPTE ST 2084), metadata mandated by CEA-861.3 for HDR support
+ HEVC: SMPTE ST 2048 and SMPTE ST 428-1 transfer characteristics
+ HEVC: Chroma subsampling location (indication of the location type described in the HEVC spec)
+ MPEG-TS: ATSC Modulation Mode (Analog, SCTE_mode_1 aka 64-QAM, SCTE_mode_2 aka 256-QAM, 8-VSB, 16-VSB)
+ #B981, MP4: support of buggy file having "hint" SubType
x HLS: better handling of media playlists having EXT-X-BYTERANGE
所以我们来分析一下常用的这三段HDR视频的亮度信息 , 分别是FOX影业的暗夜火焰演示视频,电影《少年派》片段,电影《出埃及记》片段。
视频分享在此 http://pan.baidu.com/s/1kUz0HXP
其中Mastering display luminance项就是HDR视频的最大和最低亮度cd/m2(每平方米的烛光亮度),也可以用亮度单位尼特(nits)来表示。
NEO_Fire_HDR_HEVC_2160p_5994_Main10_45-100VBR.mp4 (0-1100尼特)
General Complete name : NEO_Fire_HDR_HEVC_2160p_5994_Main10_45-100VBR.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : iso4 (iso4/hvc1) File size : 912 MiB Duration : 2mn 50s Overall bit rate : 45.0 Mbps Encoded date : UTC 2015-08-03 15:15:21 Tagged date : UTC 2015-08-03 15:15:21
Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Codec ID : hvc1 Codec ID/Info : High Efficiency Video Coding Duration : 2mn 50s Bit rate : 45.0 Mbps Maximum bit rate : 76.6 Mbps Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 59.940 (60000/1001) fps Color space : YUV Chroma subsampling : 4:2:0 (Type 2) Bit depth : 10 bits Bits/(Pixel*Frame) : 0.090 Stream size : 912 MiB (100%) Title : h265:fmt=hevc:fps=59.94@GPAC0.5.1-DEV-rev5413 Writing library : ATEME Titan KFE 3.7.1 (4.7.1.1001) Encoded date : UTC 2015-08-03 15:15:21 Tagged date : UTC 2015-08-03 15:15:52 Color range : Limited Color primaries : BT.2020 Transfer characteristics : SMPTE ST 2084 Matrix coefficients : BT.2020 non-constant Mastering display color primaries : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000 Mastering display luminance : min: 0.0000 cd/m2, max: 1100.0000 cd/m2
Life_of_ Pi_draft_Ultra-HD_HDR.mp4 (0.02-1200尼特)
General Complete name : Life_of_ Pi_draft_Ultra-HD_HDR.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/mp41) File size : 293 MiB Duration : 54s 422ms Overall bit rate mode : Variable Overall bit rate : 45.1 Mbps Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Writing application : Lavf56.15.103
Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Codec ID : hev1 Codec ID/Info : High Efficiency Video Coding Duration : 54s 375ms Bit rate : 44.8 Mbps Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 24.000 fps Original frame rate : 23.976 (24000/1001) fps Color space : YUV Chroma subsampling : 4:2:0 (Type 2) Bit depth : 10 bits Bits/(Pixel*Frame) : 0.225 Stream size : 290 MiB (99%) Writing library : ATEME Titan KFE 3.7.0 (4.7.0.2002) Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Color range : Limited Color primaries : BT.2020 Transfer characteristics : SMPTE ST 2084 Matrix coefficients : BT.2020 non-constant Mastering display color primaries : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000 Mastering display luminance : min: 0.0200 cd/m2, max: 1200.0000 cd/m2
Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 54s 422ms Bit rate mode : Variable Bit rate : 384 Kbps Channel(s) : 2 channels Channel(s)_Original : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Frame rate : 46.875 fps (1024 spf) Compression mode : Lossy Stream size : 2.47 MiB (1%) Default : Yes Alternate group : 1 Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00
Exodus_UHD_HDR_Exodus_draft.mp4 (0.02-1200尼特)
General Complete name : Exodus_UHD_HDR_Exodus_draft.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/mp41) File size : 246 MiB Duration : 47s 787ms Overall bit rate mode : Variable Overall bit rate : 43.2 Mbps Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Writing application : Lavf56.15.103
Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Codec ID : hev1 Codec ID/Info : High Efficiency Video Coding Duration : 47s 750ms Bit rate : 42.8 Mbps Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 24.000 fps Original frame rate : 23.976 (24000/1001) fps Color space : YUV Chroma subsampling : 4:2:0 (Type 2) Bit depth : 10 bits Bits/(Pixel*Frame) : 0.215 Stream size : 244 MiB (99%) Writing library : ATEME Titan KFE 3.7.0 (4.7.0.2002) Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Color range : Limited Color primaries : BT.2020 Transfer characteristics : SMPTE ST 2084 Matrix coefficients : BT.2020 non-constant Mastering display color primaries : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000 Mastering display luminance : min: 0.0200 cd/m2, max: 1200.0000 cd/m2
Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 47s 787ms Bit rate mode : Variable Bit rate : 384 Kbps Channel(s) : 2 channels Channel(s)_Original : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Frame rate : 46.875 fps (1024 spf) Compression mode : Lossy Stream size : 2.17 MiB (1%) Default : Yes Alternate group : 1 Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00
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