[FFmpeg-trac] #225(swscale:open): Converting from YUVJ to YUV lose contrast
FFmpeg
trac at avcodec.org
Mon Mar 4 11:55:11 CET 2013
#225: Converting from YUVJ to YUV lose contrast
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Reporter: sghpunk | Owner:
Type: defect | Status: open
Priority: normal | Component: swscale
Version: git-master | Resolution:
Keywords: YUV/YUVJ | Blocked By:
contrast | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by heleppkes):
Some short facts on the topic:
- 99.9% of all content is encoded as 16-235
- TVs (and other consumer electronic devices) usually operate in 16-235
- PC monitors use 0-255
So knowing this, you need to expand the 16-235 to 0-255 when watching
video on a PC monitor (or a TV configured for 0-255).
Many PC video players are capable of this, they just need to be told if
you watch content on a PC monitor or a TV.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/225#comment:12>
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