[FFmpeg-trac] #3874(avcodec:open): tiff encoder creates broken odd width yuv files
FFmpeg
trac at avcodec.org
Thu Oct 16 12:09:29 CEST 2014
#3874: tiff encoder creates broken odd width yuv files
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Reporter: ami_stuff | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: tif tiffenc | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by kurosu):
Replying to [comment:13 ami_stuff]:
> The only problem happens with other software like ImageMagick and the
rest which, as I understand, you belive is at fauly in some way. If this
is true then this ticket can be closed.
Yes, try the attached yuv.tiff generated by:
ffmpeg -i lena.pnm -s 323x240 lena.tiff
rgb2ycbcr -c none -h 4 -v 4 lena.tiff yuv.tiff
Gimp displays green garbages at the bottom of stripes I suspect to be a
multiple of 4 in height. XnView shows staircases. ffmpeg decoded output is
fine.
> I don't know any software (other than ffmpeg) which can generate YUV
TIFFs.
Please test them with the attached file or one generated following your
preferences.
Regarding the yuv data, the real issue is rather the sampling. See the h/v
parameters to rgbycbcr:
http://www.remotesensing.org/libtiff/man/rgb2ycbcr.1.html
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3874#comment:15>
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