1805278 - avif image is darker than it should be

Status: UNCONFIRMED

(Core :: Graphics: ImageLib, defect)

Description

[mozbugz]

Attachment: AVIF showing darker than it should be.

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Firefox/102.0

Steps to reproduce:

This may be related to: https://bugzilla.mozilla.org/show_bug.cgi?id=1788866

I opened the AVIF file, which was obtained from the HDR10 sample files, and encoded to AVIF via ffmpeg.

1. Download HDR10 sample file from: https://drive.google.com/drive/folders/1JSfP3EGvA9aM4gYCrI09Y_CdFP10KTby
2. Convert to avif: ffmpeg -ss 54 -i Mehanik\ HDR10\ test\ patterns/04.\ Colors/01.\ Banding_Rotating-gradients_23.976.mp4 -frames:v 1 colors.banding.avif
3. Drag file onto FireFox.

Actual results:

The file opened, but the output was significantly darker than it should be. Rendering the video in VLC works fine.

Expected results:

Expected result should be bright colors.

If I convert the frame to pam first, and then to avif, it renders fine, that is:

1. ffmpeg -ss 54 -i 01.\ Banding_Rotating-gradients_23.976.mp4 -frames:v 1 colors.banding.pam
2. ffmpeg -i colors.banding.pam -frames:v 1 colors.banding.from.pam.avif
3. open this avif.

Comment 1

[mozbugz]

Attachment: and AVIF file generated by going through PAM via ffmpeg that renders correctly.

Here is same frame rendered through an intermediary PAM file that renders as expected.

Comment 2

[mozbugz]

forgot to include ffmpeg information:
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
built with Apple clang version 14.0.0 (clang-1400.0.29.202)
configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-librsvg --enable-libtheora --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-libzimg --enable-libzvbi --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --enable-zlib --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-indev=jack --enable-opencl --disable-outdev=xv --enable-audiotoolbox --enable-videotoolbox --enable-sdl2 --disable-securetransport --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-libaom --enable-librav1e --enable-libsvtav1 --arch=arm64 --enable-gpl --enable-postproc --enable-libx264 --enable-libx265 --enable-libxvid --enable-libvidstab
libavutil 57. 28.100 / 57. 28.100
libavcodec 59. 37.100 / 59. 37.100
libavformat 59. 27.100 / 59. 27.100
libavdevice 59. 7.100 / 59. 7.100
libavfilter 8. 44.100 / 8. 44.100
libswscale 6. 7.100 / 6. 7.100
libswresample 4. 7.100 / 4. 7.100
libpostproc 56. 6.100 / 56. 6.100

Comment 3

[mozbugz]

Information from reference decoder displaying basic info, and there is some significant differences.

$ avifdec -i colors.banding.avif
Image decoded: colors.banding.avif

• Resolution : 3840x2160
• Bit Depth : 10
• Format : YUV420
• Chroma Sam. Pos: 0
• Alpha : Absent
• Range : Limited
• Color Primaries: 9
• Transfer Char. : 16
• Matrix Coeffs. : 9
• ICC Profile : Absent (0 bytes)
• XMP Metadata : Absent (0 bytes)
• EXIF Metadata : Absent (0 bytes)
• Transformations: None
• Progressive : Unavailable
• 1 timescales per second, 1.00 seconds (1 timescales), 1 frame
• Frame:
  • Decoded frame [0] [pts 0.00 (0 timescales)] [duration 1.00 (1 timescales)] [3840x2160]
    $ avifdec -i colors.banding.from.pam.avif
    Image decoded: colors.banding.from.pam.avif
• Resolution : 3840x2160
• Bit Depth : 12
• Format : YUV444
• Alpha : Absent
• Range : Full
• Color Primaries: 2
• Transfer Char. : 2
• Matrix Coeffs. : 0
• ICC Profile : Absent (0 bytes)
• XMP Metadata : Absent (0 bytes)
• EXIF Metadata : Absent (0 bytes)
• Transformations: None
• Progressive : Unavailable
• 1 timescales per second, 1.00 seconds (1 timescales), 1 frame
• Frame:
  • Decoded frame [0] [pts 0.00 (0 timescales)] [duration 1.00 (1 timescales)] [3840x2160]

So there are a number of differences between the two.

Oh, I also forgot to include that this is on a 2021 14" MBP running Ventura 13.0.1.

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: ImageLib' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:aosmond, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 6

[mozbugz]

Confirmed that this is still an issue on: 115.8.0esr on MacOS 14.2.1