#4683: mjpeg: 12bpp fix artefacts -------------------------------------+------------------------------------- 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 -------------------------------------+------------------------------------- artefacts on the logo {{{ C:\>ffmpeg -i 12bpp.jpg out.bmp ffmpeg version N-73189-g7728d23 Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable- libcaca -- enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable- librtmp --en able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo- amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena ble-decklink --enable-zlib libavutil 54. 27.100 / 54. 27.100 libavcodec 56. 45.100 / 56. 45.100 libavformat 56. 38.102 / 56. 38.102 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 18.100 / 5. 18.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.100 / 1. 2.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, image2, from '12bpp.jpg': Duration: 00:00:00.04, start: 0.000000, bitrate: 65308 kb/s Stream #0:0: Video: mjpeg, gray16le(12 bpc, bt470bg/unknown/unknown), 999x74 9 [SAR 300:300 DAR 999:749], 25 tbr, 25 tbn, 25 tbc Output #0, image2, to 'out.bmp': Metadata: encoder : Lavf56.38.102 Stream #0:0: Video: bmp, gray, 999x749 [SAR 1:1 DAR 999:749], q=2-31, 200 kb /s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc56.45.100 bmp Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> bmp (native)) Press [q] to stop, [?] for help frame= 1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A video:732kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o verhead: unknown }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4683> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker