Hi, There are some 4K Dolby Vision files around, like the one linked to directly from this page of this site, which are not decoded with the correct colours using git master head FFmpeg (compiled last weekend).
https://4kmedia.org/lg-amaze-dolby-vision-uhd-4k-demo/ When I play the file downloaded from that page on an VG 4K Dolby Vision capable TV it plays correctly with the right colours, but the colours are way wrong when decoded/converted with FFmpeg. Should I be expecting Dolby Vision files to decode correctly? I mean, it's very close, but just not quite right. Thanks :-) Example command line: $ ffmpeg -i 'LG Amaze Dolby Vision UHD 4K Demo.ts' -sws_flags lanczos -filter:v "scale=1920:1080:interl=0,format=yuv420p" -c:v libx264 -crf 18 -an -y out.mkv ffmpeg version N-95915-g18507b4-shared_linux_x86_64_201911301603 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609 configuration: --extra-version=shared_linux_x86_64_201911301603 --extra-cflags=' ' --extra-libs=' -lpthread -lm' --pkg-config-flags= --cross-prefix= --arch=x86_64 --target-os=linux --prefix=/opt/ffbuild --enable-gpl --enable-version3 --enable-nonfree --disable-ffplay --disable-dxva2 --enable-libxml2 --enable-openssl --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libopus --enable-libxvid --enable-libvpx --enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-libopenjpeg --enable-libaom --enable-libxcb --enable-decklink libavutil 56. 36.101 / 56. 36.101 libavcodec 58. 64.101 / 58. 64.101 libavformat 58. 35.100 / 58. 35.100 libavdevice 58. 9.101 / 58. 9.101 libavfilter 7. 67.100 / 7. 67.100 libswscale 5. 6.100 / 5. 6.100 libswresample 3. 6.100 / 3. 6.100 libpostproc 55. 6.100 / 55. 6.100 [hevc @ 0x37c9ec0] Skipping NAL unit 62 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'LG Amaze Dolby Vision UHD 4K Demo.ts': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: mp42dby1isom creation_time : 2017-04-13T20:09:18.000000Z Duration: 00:00:56.20, start: 0.000000, bitrate: 28362 kb/s Stream #0:0(und): Video: hevc (Main 10) (dvhe / 0x65687664), yuv420p10le(tv), 3840x2160 [SAR 1:1 DAR 16:9], 27713 kb/s, 60 fps, 60 tbr, 60k tbn, 60 tbc (default) Metadata: creation_time : 2017-04-13T20:09:18.000000Z handler_name : video handler encoder : DOVI Coding Stream #0:1(und): Audio: eac3 (ec-3 / 0x332D6365), 48000 Hz, 5.1(side), fltp, 640 kb/s (default) Metadata: creation_time : 2017-04-13T20:09:18.000000Z handler_name : sound handler Side data: audio service type: main Stream mapping: Stream #0:0 -> #0:0 (hevc (native) -> h264 (libx264)) Press [q] to stop, [?] for help [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [libx264 @ 0x37f2940] using SAR=1/1 [libx264 @ 0x37f2940] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [hevc @ 0x380ce80] Skipping NAL unit 62 [libx264 @ 0x37f2940] profile Progressive High, level 4.2, 4:2:0, 8-bit [libx264 @ 0x37f2940] 264 - core 157 r2969 d4099dd - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=18.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, matroska, to 'out.mkv': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: mp42dby1isom encoder : Lavf58.35.100 Stream #0:0(und): Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 60 fps, 1k tbn, 60 tbc (default) Metadata: creation_time : 2017-04-13T20:09:18.000000Z handler_name : video handler encoder : Lavc58.64.101 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62kB time=00:00:00.00 bitrate=N/A speed= 0x [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62kB time=00:00:00.00 bitrate=N/A speed= 0x [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 [hevc @ 0x38e9080] Skipping NAL unit 62 [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 62 [hevc @ 0x37fa1c0] Skipping NAL unit 621kB time=00:00:00.06 bitrate= 99.4kbits/s speed=0.0442x [hevc @ 0x380ce80] Skipping NAL unit 62 <SNIP - nothing interesting in here> [hevc @ 0x38f98c0] Skipping NAL unit 62 [hevc @ 0x390a140] Skipping NAL unit 62 [hevc @ 0x37f3380] Skipping NAL unit 624kB time=00:00:54.95 bitrate=27572.6kbits/s speed=0.292x [hevc @ 0x37fa1c0] Skipping NAL unit 62 [hevc @ 0x380ce80] Skipping NAL unit 62 [hevc @ 0x385de80] Skipping NAL unit 62 [hevc @ 0x386e700] Skipping NAL unit 62 [hevc @ 0x38d8940] Skipping NAL unit 62 frame= 3372 fps= 18 q=-1.0 Lsize= 184967kB time=00:00:56.15 bitrate=26985.2kbits/s speed=0.296x video:184940kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.014368% [libx264 @ 0x37f2940] frame I:23 Avg QP:17.12 size:372237 [libx264 @ 0x37f2940] frame P:1397 Avg QP:21.18 size:103814 [libx264 @ 0x37f2940] frame B:1952 Avg QP:25.00 size: 18334 [libx264 @ 0x37f2940] consecutive B-frames: 22.3% 1.2% 1.1% 75.4% [libx264 @ 0x37f2940] mb I I16..4: 22.5% 50.1% 27.3% [libx264 @ 0x37f2940] mb P I16..4: 0.7% 5.0% 1.1% P16..4: 42.2% 13.8% 13.0% 0.0% 0.0% skip:24.2% [libx264 @ 0x37f2940] mb B I16..4: 0.1% 0.7% 0.5% B16..8: 29.7% 3.9% 1.9% direct: 3.3% skip:59.9% L0:34.9% L1:50.8% BI:14.3% [libx264 @ 0x37f2940] 8x8 transform intra:66.6% inter:58.6% [libx264 @ 0x37f2940] coded y,uvDC,uvAC intra: 83.7% 60.1% 24.9% inter: 23.1% 16.1% 6.0% [libx264 @ 0x37f2940] i16 v,h,dc,p: 41% 16% 7% 36% [libx264 @ 0x37f2940] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 19% 14% 6% 10% 7% 14% 7% 13% [libx264 @ 0x37f2940] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 17% 11% 7% 12% 9% 13% 7% 11% [libx264 @ 0x37f2940] i8c dc,h,v,p: 63% 19% 13% 5% [libx264 @ 0x37f2940] Weighted P-Frames: Y:8.7% UV:5.0% [libx264 @ 0x37f2940] ref P L0: 68.6% 13.3% 11.9% 6.1% 0.1% [libx264 @ 0x37f2940] ref B L0: 88.4% 9.2% 2.4% [libx264 @ 0x37f2940] ref B L1: 93.4% 6.6% [libx264 @ 0x37f2940] kb/s:26957.74 -- Mark Himsley _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".