Opened 3 years ago

Closed 3 years ago

Last modified 3 years ago

#7814 closed defect (invalid)

ffmpeg h264 decoding provides incorrect colors

Reported by: Ilya87 Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
How to reproduce:

https://yadi.sk/i/qBkjd3TzJ_yBQQ - matroska muxed file from blu-ray (749 frames)
% ffmpeg -color_primaries 1 -color_trc 1 -colorspace 1 -color_range 1 -i /home/ilya/eva/Evangelion1.11_test_.mkv -vf setparams=range=tv:color_primaries=bt709:color_trc=bt709:colorspace=bt709 -ss 12 -frames:v 1 def_x264_ffmpeg.png

ffplay -i /home/ilya/eva/Evangelion1.11_test_.mkv -ss 12

Make screenshot from ffplay and compare. FFmpeg has worse picture, incorrect colors (see eyes for example), darker areas.

ffmpeg version N-93394-g14eea7c47a
built on Antergos Linux x86_64

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

Attachments (2)

def_x264_ffmpeg.png (1.5 MB ) - added by Ilya87 3 years ago.
def_x264_ffplay.png (1.7 MB ) - added by Ilya87 3 years ago.

Change History (6)

by Ilya87, 3 years ago

Attachment: def_x264_ffmpeg.png added

by Ilya87, 3 years ago

Attachment: def_x264_ffplay.png added

comment:1 by Ilya87, 3 years ago

Keywords: colorspace added
Summary: ffmpeg h264 decoding differs from ffplayffmpeg h264 decoding provides incorrect colors when decoding

The problem is more complex as ffmpeg incorrectly decode also yuv format. Reference picture was taken after the following commands:
1 - ldecode.exe -i eva.h264 -o eva_ldecod.yuv (h.264 stream was extracted from mkv with mkvextract tracks command)
2 - Using yuv player (https://github.com/Tee0125/yuvplayer) I saved 288th frame.
3 - ffmpeg -s 1920x1080 -i eva_ldecod.yuv -ss 11.46 -frames:v 1 ffmpeg_yuv.png

The result: https://diff.pics/JjYgdC21Edl8/1

comment:2 by Ilya87, 3 years ago

Summary: ffmpeg h264 decoding provides incorrect colors when decodingffmpeg h264 decoding provides incorrect colors

comment:3 by Ilya87, 3 years ago

Resolution: invalid
Status: newclosed

I've tested ffmpeg with different colorspace settings and think that ffplay (or videodrivers) modifies somehow output.

comment:4 by Carl Eugen Hoyos, 3 years ago

Component: ffmpegundetermined
Keywords: colorspace removed
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