#1191: qt tiff enc: make output compatible with quitcktime
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Reporter: ami_stuff | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: | undetermined
unspecified | Keywords:
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
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http://ffmpeg.org/trac/ffmpeg/raw-attachment/ticket/1167/j.asf
the output from
ffmpeg -i j.asf -an -vcodec tiff -pix_fmt (any) out.mov
is always identified by quicktime as 24bpp and is decoded incorrectly.
I have found out where is a problem, please look at the attached
screenshot.
The left file is an unmodified output from:
ffmpeg -i j.asf -vcodec tiff -pix_fmt gray out.mov
conversion, the right file is modified by me (to values which are present
in QT TIFF 256gray generated by QuickTime) and after this change the file
is identified and decoded correctly by QuickTime.
(for monob 18 FF FF should be repleaced by 01 00 01)
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1191>
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