Opened 4 years ago

Closed 4 years ago

#3987 closed enhancement (needs_more_info)

When converting to higher bits and resizing, do first convert and than resize

Reported by: erazortt Owned by:
Priority: normal Component: swscale
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
When the the user wants to convert the input to a higher bit depth AND to resize, do first the conversion to that bit depth and than resize.

How to reproduce:
ffmpeg -loglevel verbose -i 8bitInput.mkv -pix_fmt yuv420p10le -vf "scale=1280:-1" -sws_flags spline -f rawvideo - 1>/dev/null

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

Change History (3)

comment:1 Changed 4 years ago by cehoyos

Could you elaborate on what you think is currently wrong and why the behaviour should change?

comment:2 Changed 4 years ago by michael

Please provide a testcase that shows a problem, where can the input file be found, what is the problem with the output ?
it appears you make some (incorrect) assumtations on how swscale works and your report is based on top of these. Its a bit tricky to understand from this what the actual issue is that you report

comment:3 Changed 4 years ago by cehoyos

  • Resolution set to needs_more_info
  • Status changed from new to closed

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