[FFmpeg-trac] #9490(undetermined:new): blur and sharpen

[FFmpeg]

#9490: blur and sharpen
-------------------------------------+-------------------------------------
             Reporter:  jsteinkamp   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Smartblur and unsharp create a corrupted tif file.
 In addition, Smartblur and unsharp lose the alpha layer for PNG format
 files.

 How to reproduce:
 TIF with alpha channel and without alpha channel
 ffmpeg -y -i file.tif -vf smartblur file_sharper.tif
 ffmpeg -y -i file.tif -vf unsharp file_sharper.tif

 PNG with alpha layer
 ffmpeg -y -i file.png -vf smartblur file_sharper.png
 ffmpeg -y -i file.png -vf unsharp file_sharper.png

 ffmpeg version N-104454-gd92fdc7144-20211030

 built on   built with gcc 10-win32 (GCC) 20210610
   configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
 --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug
 --enable-shared --disable-static --disable-w32threads --enable-pthreads
 --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype
 --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig
 --enable-libvorbis --enable-opencl --enable-libvmaf --enable-vulkan
 --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-
 avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac
 --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libglslang
 --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame
 --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp
 --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-
 librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-
 libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d
 --disable-libdrm --disable-vaapi --enable-libvidstab --enable-libx264
 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg
 --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags=
 --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-
 version=20211030
   libavutil      57.  7.100 / 57.  7.100
   libavcodec     59. 12.100 / 59. 12.100
   libavformat    59.  8.100 / 59.  8.100
   libavdevice    59.  0.101 / 59.  0.101
   libavfilter     8. 16.100 /  8. 16.100
   libswscale      6.  1.100 /  6.  1.100
   libswresample   4.  0.100 /  4.  0.100
   libpostproc    56.  0.100 / 56.  0.100
 Input #0, png_pipe, from 'file.png':
   Duration: N/A, bitrate: N/A
   Stream #0:0: Video: png, rgba(pc), 128x128 [SAR 2835:2835 DAR 1:1], 25
 fps, 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (png (native) -> png (native))

 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9490>
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