#7070: A proper way of converting yuvj420p colorspace to yuv420p (AVC to HEVC reencoding) ---------------------------------+---------------------------------- Reporter: birdie | Type: defect Status: new | Priority: minor Component: swscale | Version: 3.2.4 Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ---------------------------------+---------------------------------- This is not a bug, this is a request for help.
My phone generates files (AVC) in the yuvj420p colorspace and I cannot figure out how to reencode them to HEVC without losing colors. I have encoded 1) without options and I've also tried 2) this and 3) this: {{{ ffmpeg -i src -vf "scale=in_range=pc:out_range=tv" out }}} and this {{{ ffmpeg -i src -pix_fmt yuv420p -vf "scale=in_range=pc:out_range=tv" out }}} But I always get this warning message: {{{ [swscaler @ 0x1229940] deprecated pixel format used, make sure you did set range correctly }}} And the resulting file always has different colors (either undersaturated (1) or oversatured (2,3) ). {{{ ffprobe src.mp4 ffprobe -i part0*mp4 ffprobe version 3.4.2 Copyright (c) 2007-2018 the FFmpeg developers built with gcc 7 (GCC) configuration: --disable-static --enable-nonfree --enable-avfilter --enable-shared --enable-gpl --enable-postproc --enable-pthreads --enable- libspeex --enable-libmp3lame --enable-libx264 --enable-libxvid --enable- libopus --enable-libopenjpeg --disable-debug --disable-doc --enable- libpulse --extra-cflags='-march=native' --enable-version3 --enable- libvorbis --enable-libfdk-aac --enable-gnutls --enable-libfreetype --enable-libx265 --libdir=/usr/local/lib64 --enable-lto libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'part0.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf57.83.100 Duration: 00:00:31.60, start: 0.014000, bitrate: 19315 kb/s Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 19988 kb/s, SAR 1:1 DAR 16:9, 20.51 fps, 20 tbr, 90k tbn, 180k tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 96 kb/s (default) Metadata: handler_name : SoundHandler }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/7070> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://ffmpeg.org/mailman/listinfo/ffmpeg-trac