#2973: 'ffmpeg -i' print SAR instead of PAR -------------------------------------+------------------------------------- Reporter: jofsey | Type: defect Status: new | Priority: normal Component: FFprobe | Version: 2.0.1 Keywords: aspect- | Blocked By: ratio, sar, par | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: If my knowledge is correct, SAR (Storage Aspect Ratio) is the ratio of pixel dimensions. For example, a 640 × 480 video has a SAR of 640/480 = 4:3. Whereas PAR (Pixel Aspect Ratio) is ratio of pixel height and width, and most of modern videos have square PAR (1:1). But when I tried to check it with `ffmpeg -i` or ffprobe, I got square SAR instead of square PAR for all test videos. How to reproduce: {{{ % ffprobe 3867805782.mp4 ffprobe version 2.0.1 Copyright (c) 2007-2013 the FFmpeg developers built on Aug 11 2013 14:52:28 with gcc 4.8.1 (GCC) 20130725 (prerelease) configuration: --prefix=/usr --disable-debug --disable-static --enable- avresample --enable-dxva2 --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable- libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable- libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable- libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable- libx264 --enable-libxvid --enable-pic --enable-postproc --enable-runtime- cpudetect --enable-shared --enable-swresample --enable-vdpau --enable- version3 --enable-x11grab libavutil 52. 38.100 / 52. 38.100 libavcodec 55. 18.102 / 55. 18.102 libavformat 55. 12.100 / 55. 12.100 libavdevice 55. 3.100 / 55. 3.100 libavfilter 3. 79.101 / 3. 79.101 libavresample 1. 1. 0 / 1. 1. 0 libswscale 2. 3.100 / 2. 3.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3867805782.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf54.6.100 Duration: 00:00:07.97, start: 0.000000, bitrate: 428 kb/s Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 309 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc Metadata: handler_name : VideoHandler Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 115 kb/s Metadata: handler_name : SoundHandler }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2973> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker