#6033: unsharp filter documentetion additional description. -------------------------------------+------------------------------------- Reporter: nicol | Type: Status: new | enhancement Component: | Priority: minor documentation | Version: git- Keywords: unsharp | master Blocking: | Blocked By: Analyzed by developer: 0 | Reproduced by developer: 0 -------------------------------------+------------------------------------- Summary of the bug: Setting unsharp filter more than 28 adds luma_msize_x and luma_msize_y, chroma_msize_x and chroma_msize_y to an error. So I should describe under 26 adds luma_msize_x and luma_msize_y, chroma_msize_x and chroma_msize_y. Documentation https://ffmpeg.org/ffmpeg-filters.html#unsharp-1 Source code https://github.com/FFmpeg/FFmpeg/blob/master/libavfilter/vf_unsharp.c#L144 How to reproduce: {{{ % ffmpeg -v 9 -loglevel 99 -f lavfi -i color=c=white:size=640x360,unsharp=lx=5:ly=23:la=-1:cx=5:cy=5:ca=0 -t 1 error0.mp4 ffmpeg version N-82785-g6b95da9 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-n venc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable- libfreetype --enable-libgme --enable- libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable- libopencore-amrnb --enable-libopencor e-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger - -enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidsta b --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable- libwavpack --enable-libwebp --enable-lib x264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --ena ble-zlib libavutil 55. 41.101 / 55. 41.101 libavcodec 57. 66.109 / 57. 66.109 libavformat 57. 58.101 / 57. 58.101 libavdevice 57. 2.100 / 57. 2.100 libavfilter 6. 68.100 / 6. 68.100 libswscale 4. 3.101 / 4. 3.101 libswresample 2. 4.100 / 2. 4.100 libpostproc 54. 2.100 / 54. 2.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument '9'. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument '99'. Reading option '-f' ... matched as option 'f' (force format) with argument 'lavfi'. Reading option '-i' ... matched as input url with argument 'color=c=white:size=640x360,unsharp=lx=5:ly=23:la=- 1:cx=5:cy=5:ca=0'. Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with arg ument '1'. Reading option 'error0.mp4' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set logging level) with argument 9. Successfully parsed a group of options. Parsing a group of options: input url color=c=white:size=640x360,unsharp=lx=5:ly=23:la=-1:cx=5:cy=5:ca=0. Applying option f (force format) with argument lavfi. Successfully parsed a group of options. Opening an input file: color=c=white:size=640x360,unsharp=lx=5:ly=23:la=-1:cx=5:cy=5:ca=0. detected 4 logical cores [Parsed_color_0 @ 0000000000569e80] Setting 'c' to value 'white' [Parsed_color_0 @ 0000000000569e80] Setting 'size' to value '640x360' [Parsed_color_0 @ 0000000000569e80] size:640x360 rate:25/1 duration:-1.000000 sar:1/1 [Parsed_unsharp_1 @ 000000000056a940] Setting 'lx' to value '5' [Parsed_unsharp_1 @ 000000000056a940] Setting 'ly' to value '23' [Parsed_unsharp_1 @ 000000000056a940] Setting 'la' to value '-1' [Parsed_unsharp_1 @ 000000000056a940] Setting 'cx' to value '5' [Parsed_unsharp_1 @ 000000000056a940] Setting 'cy' to value '5' [Parsed_unsharp_1 @ 000000000056a940] Setting 'ca' to value '0' [Parsed_unsharp_1 @ 000000000056a940] luma or chroma matrix size too big [lavfi @ 0000000000566d40] Error initializing filter 'unsharp' with args 'lx=5:ly=23:la=-1:cx=5:cy=5:ca=0' color=c=white:size=640x360,unsharp=lx=5:ly=23:la=-1:cx=5:cy=5:ca=0: Invalid argument ffmpeg version N-82785-g6b95da9 built on ... zeranoe }}} Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker. -- Ticket URL: <https://trac.ffmpeg.org/ticket/6033> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker