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• How to use original names when using find -exec ?

  27 mai 2023, par ironsand

  There are .mp4 files I want to convert.

  



  $ find . -name '*.mp4'
./01.mp4
./02.mp4
./03.mp4


  



  I expected to output files copy-01.mp4, copy-02.mp4 and copy-03.mp4 with this command.

  



  find . -name '*.mp4' -exec ffmpeg -i {} -c copy -aspect 16:9 copy-{} ";"


  



  But it failed with errors Unable to find a suitable output format for 'copy-'.
I thought {} represents the file name, isn't it ?

  



  How can I use original file names when using -exec option of find ?

  



  The find version is :

  



  $ find --version
find (GNU findutils) 4.4.2
Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later /gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Eric B. Decker, James Youngman, and Kevin Dalley.
Built using GNU gnulib version e5573b1bad88bfabcda181b9e0125fb0c52b7d3b
Features enabled: O_NOFOLLOW(disabled) LEAF_OPTIMISATION FTS() CBO(level=0)


  



  This is xargs version.

  



  xargs --version
xargs (GNU findutils) 4.4.2
Copyright (C) 2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later /gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Eric B. Decker, James Youngman, and Kevin Dalley.
Built using GNU gnulib version e5573b1bad88bfabcda181b9e0125fb0c52b7d3b


  



  Result of ffmpeg

  



  $ find * -type f -name '*.mp4' -exec ffmpeg -i {} -c copy -aspect 16:9 copy-{} ";"

# almost same outputs several times here.

ffmpeg version N-50911-g9efcfbe Copyright (c) 2000-2013 the FFmpeg developers
  built on Mar 13 2013 21:26:48 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 19.100 / 52. 19.100
  libavcodec     55.  0.100 / 55.  0.100
  libavformat    55.  0.100 / 55.  0.100
  libavdevice    54.  4.100 / 54.  4.100
  libavfilter     3. 45.103 /  3. 45.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '24.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2012-11-01 13:42:12
    encoder         : HandBrake 0.9.8 2012071700
  Duration: 00:24:58.62, start: 0.000000, bitrate: 474 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x256, 341 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 2012-11-01 13:42:12
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s
    Metadata:
      creation_time   : 2012-11-01 13:42:12


  


• x264 & ARM on Windows Phone

  16 octobre 2013, par ssk

  I am trying to build x264 (http://www.videolan.org/developers/x264.html)

  I used this project to build it on Windows using Visual Studio : http://winx264.codeplex.com/documentation

  I found these steps to build it on Windows using MSYS : http://www.ayobamiadewole.com/Blog/How-to-build-x264-or-libx264.dll-in-Windows and http://software.intel.com/en-us/articles/building-x264-with-intel-compiler-for-windows

  I found that ARM support has been added to x264 recently. x264 depends on Intel compiler and YASM assembler. I am not sure whether this is supported on Windows Phone 8.

  1) Has anyone built a windows phone 8 project using Intel compiler ? Is it supported ?

  2) I am not familiar with assemblers. Is YASM assembler supported on Windows Phone 8 ?

• Splicing two gifs together every other frame using ffmpeg

  30 juillet 2021, par Alexwall

  I have two gifs I want to be combined together in an odd fashion.

  


  If I have gif1.gif and gif2.gif i want one frame of gif2.gif inserted every other frame of gif1.gif, in a sort of zipper like way if that makes sense.

  


  Is this feasible ? Is ffmpeg maybe not the right software to use for this ?