[FFmpeg-trac] #5831(undetermined:new): HDR Metadata in Encoding
FFmpeg
trac at avcodec.org
Wed Sep 7 14:43:51 EEST 2016
#5831: HDR Metadata in Encoding
-------------------------------------+-------------------------------------
Reporter: | Type:
smallishzulu | enhancement
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: metadata, | Blocked By:
hdr | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Hi,
I try to dump HDR metadata (mastering display color primaries & luminance)
of a HDR video using;
root at kizil105:/home/admintv# /opt/ffmpeg/bin/ffmpeg -i /tmp/exodus_hdr.mp4
-f ffmetadata -y metadata.txt
ffmpeg version N-81560-ge3fd185 Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
configuration: --prefix=/opt/ffmpeg --enable-shared --enable-static
--enable-nonfree --enable-gpl --extra-cflags='-I/opt/ffmpeg/include
-I/usr/local/include' --extra-ldflags=-L/opt/ffmpeg/lib
--bindir=/opt/ffmpeg/bin --extra-libs=-ldl --enable-libx264 --enable-
libx265 --enable-nonfree --enable-gpl --enable-nvenc --enable-vdpau
--enable-libzvbi --enable-libfdk-aac --enable-libzimg --enable-avresample
--enable-libzmq --enable-libfreetype
libavutil 55. 29.100 / 55. 29.100
libavcodec 57. 54.102 / 57. 54.102
libavformat 57. 48.102 / 57. 48.102
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 60.100 / 6. 60.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
[aac @ 0x1cb64c0] This stream seems to incorrectly report its last channel
as LFE[3], mapping to LFE[0]
Input #0, mpegts, from '/tmp/exodus_hdr.mp4':
Duration: 00:00:02.13, start: 1.525000, bitrate: 44519 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024),
yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9],
23.98 fps, 24 tbr, 90k tbn, 23.98 tbc
Stream #0:1[0x101](und): Audio: aac (LC) ([15][0][0][0] / 0x000F),
48000 Hz, 5.1, fltp, 400 kb/s
Output #0, ffmetadata, to 'metadata.txt':
Metadata:
encoder : Lavf57.48.102
Stream mapping:
Press [q] to stop, [?] for help
size= 0kB time=-577014:32:22.77 bitrate=N/A speed=N/A
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
Output file is empty, nothing was encoded
However; I am not able to get HDR related metadata:
root at kizil105:/home/admintv# cat metadata.txt
;FFMETADATA1
encoder=Lavf57.48.102
Mediainfo output for exodus_hdr.mp4:
General
ID : 1 (0x1)
Complete name : C:\Users\Ali
KIZIL\Desktop\exodus_hdr.mp4
Format : MPEG-TS
File size : 11.3 MiB
Duration : 2 s 83 ms
Overall bit rate mode : Variable
Overall bit rate : 45.4 Mb/s
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10 at L5.1@High
Codec ID : 36
Duration : 2 s 83 ms
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Writing library : ATEME Titan KFE 3.7.0
(4.7.0.2002)
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 : 257 (0x101)
Menu ID : 1 (0x1)
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Muxing mode : ADTS
Codec ID : 15
Duration : 1 s 877 ms
Bit rate mode : Variable
Channel(s) : 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
Menu
ID : 4096 (0x1000)
Menu ID : 1 (0x1)
List : 256 (0x100) (HEVC) / 257
(0x101) (AAC)
Service name : Service01
Service provider : FFmpeg
Service type : digital television
HRD Metadata part is:
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
It would be nice to import this metadata info back to encode such like;
/opt/ffmpeg/bin/ffmpeg -loglevel verbose-re -i
/media/usb0/4k_sampels/Exodus_UHD_HDR_Exodus_draft.mp4 -i metadata.txt
-map_metadata 1 -c:v:0 nvenc_hevc -preset llhq -profile:v:0 main10 -vb
8000k -c:a:0 mp2 -b:a:0 384k -f mpegts -color_range 1 -color_trc
smpte2084 -color_primaries bt2020 -colorspace 9 -y /tmp/out.ts
for HDR transcoding.
Additional note:
Below command also does not add metadat to transcoding:
/opt/ffmpeg/bin/ffmpeg -loglevel verbose-re -i
/media/usb0/4k_sampels/Exodus_UHD_HDR_Exodus_draft.mp4 -c:v:0 nvenc_hevc
-preset llhq -profile:v:0 main10 -vb 8000k -c:a:0 mp2 -b:a:0 384k -f
mpegts -metadata:s:v:0 master-
display="G(13248,34499)B(7500,2999)R(34000,15999)WP(15700,17550)L(10000000,100)"
-color_range 1 -color_trc smpte2084 -color_primaries bt2020 -colorspace 9
-y /tmp/out.ts
Kind Regards,
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5831>
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