[FFmpeg-user] How to remove rotation of a video?

[Ulf Zibis]

Hi,

I have a video which is flaged rotated by 90 °, which is wrong. How can
I delete this flag, preferably directly in the existing file?

Here is the data:
$ ffplay 20200205_161649.mp4
ffplay version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2003-2019 the FFmpeg
developers
   built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
   configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse
--enable-librubberband --enable-librsvg --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
--enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
--enable-omx --enable-openal --enable-opengl --enable-sdl2
--enable-libdc1394 --enable-libdrm --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
   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
   libavresample   3.  7.  0 /  3.  7.  0
   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 '20200205_161649.mp4':0/0
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: isommp42
     creation_time   : 2020-02-05T19:22:17.000000Z
     com.android.version: 8.0.0
   Duration: 00:04:08.84, start: 0.000000, bitrate: 17264 kb/s
     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(tv, bt709), 1920x1080, 17003 kb/s, SAR 1:1 DAR 16:9, 30 fps, 30
tbr, 90k tbn, 180k tbc (default)
     Metadata:
       rotate          : 90
       creation_time   : 2020-02-05T19:22:17.000000Z
       handler_name    : VideoHandle
     Side data:
       displaymatrix: rotation of -90.00 degrees
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 256 kb/s (default)
     Metadata:
       creation_time   : 2020-02-05T19:22:17.000000Z
       handler_name    : SoundHandle
    5.16 A-V: -0.036 fd=   6 aq=   59KB vq= 2146KB sq=    0B f=0/0

Thanks for a short advice,
-Ulf

--
Von meinem Seibert gesendet