Hello, I figure out that ffprobe not always show the "display_aspect_ratio", but mediainfo does. Is there any technical reason for that? Or is there another way to get this info, instead of using "-show_streams". I could calculate the aspect from resolution but how could I be sure that the pixels are square? Here are a uncut output: ffprobe -i D:\char.mp4 -select_streams v:0 -show_streams ffprobe version N-94265-gecdb6fbe18 Copyright (c) 2007-2019 the FFmpeg developers   built with gcc 9.1.0 (Rev3, Built by MSYS2 project)   configuration:  --enable-sdl2 --enable-gmp --enable-libmp3lame --enable-libvpx --enable-libx264 --enable-libx265 --enable-fontconfig --enable-libfreetype --enable-libmysofa --enable-libopenjpeg --enable-libsoxr --enable-libtwolame --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-gpl --enable-avisynth --enable-chromaprint --enable-libfdk-aac --enable-libfribidi --enable-librubberband --enable-libzmq --enable-opengl --enable-libsrt --enable-libaom --enable-schannel --extra-cflags=-DLIBTWOLAME_STATIC --extra-cflags=-DCHROMAPRINT_NODLL --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-cflags=-DLIBXML_STATIC --enable-version3 --enable-nonfree --disable-stripping   libavutil      56. 30.100 / 56. 30.100   libavcodec     58. 53.101 / 58. 53.101   libavformat    58. 28.101 / 58. 28.101   libavdevice    58.  7.100 / 58.  7.100   libavfilter     7. 56.101 /  7. 56.101   libswscale      5.  4.101 /  5.  4.101   libswresample   3.  4.100 /  3.  4.100   libpostproc    55.  4.100 / 55.  4.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\char.mp4':   Metadata:     major_brand     : isom     minor_version   : 512     compatible_brands: isomiso2avc1mp41     encoder         : Lavf58.28.101   Duration: 00:04:07.53, start: 0.000000, bitrate: 9085 kb/s     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 8953 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)     Metadata:       handler_name    : VideoHandler     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)     Metadata:       handler_name    : SoundHandler [STREAM] index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=Constrained Baseline codec_type=video codec_time_base=1/50 codec_tag_string=avc1 codec_tag=0x31637661 width=1920 height=1080 coded_width=1920 coded_height=1088 has_b_frames=0 sample_aspect_ratio=N/A display_aspect_ratio=N/A pix_fmt=yuv420p level=40 color_range=unknown color_space=unknown color_transfer=unknown color_primaries=unknown chroma_location=left field_order=unknown timecode=N/A refs=1 is_avc=true nal_length_size=4 id=N/A r_frame_rate=25/1 avg_frame_rate=25/1 time_base=1/12800 start_pts=0 start_time=0.000000 duration_ts=3168256 duration=247.520000 bit_rate=8953725 max_bit_rate=N/A bits_per_raw_sample=8 nb_frames=6188 nb_read_frames=N/A nb_read_packets=N/A DISPOSITION:default=1 DISPOSITION:dub=0 DISPOSITION:original=0 DISPOSITION:comment=0 DISPOSITION:lyrics=0 DISPOSITION:karaoke=0 DISPOSITION:forced=0 DISPOSITION:hearing_impaired=0 DISPOSITION:visual_impaired=0 DISPOSITION:clean_effects=0 DISPOSITION:attached_pic=0 DISPOSITION:timed_thumbnails=0 TAG:language=und TAG:handler_name=VideoHandler [/STREAM]