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• Recursively convert images in each subfolder into individual videos using FFmpeg

  17 décembre 2024, par arutan edram

  I am using this script to convert all images in a folder into a video. Each image is shown for 4 seconds and the script runs from a bat file.

  


  `ffmpeg -framerate 1/4 -i %%03d.jpg -pix_fmt yuv420p video.mp4`


  


  I have hundreds of subfolders each containing images with the same resolution and I want to convert them into one moive per subfolder.

  


  I might be close to a solution but it still does not do the job

  


  @echo off
setlocal enabledelayedexpansion

:: Set the frame rate and file format
set "framerate=1/4"
set "image_format=%%03d.jpg"
set "output_video=video.mp4"

:: Traverse all subfolders
for /d /r %%F in (*) do (
    echo Processing folder: %%F
    cd "%%F"
    :: Check if images exist
    if exist "%image_format%" (
        echo Converting images in %%F to video...
        ffmpeg -framerate %framerate% -i "%image_format%" -pix_fmt yuv420p "%%~nxF.mp4"
    ) else (
        echo No images found in %%F, skipping...
    )
    cd ..
)


  


  Any help is appreciated

  


• PKG_CONFIG_PATH can't be seen by configure

  23 mars 2019, par Hashim

  I’m using Cygwin to compile a MinGW version of FFmpeg (I already use Cygwin so it didn’t make sense to use anything else to build).

  I was originally getting an error that someone on the Doom9 forums suggested might be due to mixing MinGW-64 and Cygwin dependencies. I then compiled or sourced MinGW-64 versions of all of the required dependencies (as some dependencies could not be compiled with Cygwin alone), and FFmpeg still fails to configure, always with the same error.

  This error is always a variation of "package not found using pkg-config" - if libaom is enabled, I get :

  ERROR : aom >= 1.0.0 not found using pkg-config

  If I don’t add —enable-libaom in the configure script, I get :

  ERROR : libass not found using pkg-config

  I’m running the following on the command line, in a single shell, to compile FFmpeg :

  cd /ffmpeg_sources/ffmpeg && export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig" && 
  
  ./configure --arch=x86_64 --cross-prefix=x86_64-w64-mingw32- --target-os=mingw32 \
  
  --prefix="/usr/local" \
  
  --extra-cflags="-I/usr/local/include -static" \
  
  --extra-ldflags="-L/usr/local/lib -static" \
  
  --pkg-config-flags="--static" \
  
  --extra-libs="-pthread -lm" \
  
  --enable-libaom \
  
  --enable-libass \
  
  --enable-libfdk-aac \
  
  --enable-libfreetype \
  
  --enable-libmp3lame \
  
  --enable-libopus \
  
  --enable-libvorbis \
  
  --enable-libvpx \
  
  --enable-libx264 \
  
  --enable-libx265 \
  
  --enable-gpl \
  
  --enable-nonfree \
  
  --enable-static  \
  
  --disable-shared && 
  
  make -j$(nproc) && 
  
  make install

  A similar question [here] indicates that it’s an issue with PKG_CONFIG_PATH not seeing the packages in /usr/local/lib/pkgconfig, but when I do :

  cd /ffmpeg_sources/ffmpeg && PKG_CONFIG_PATH="/usr/local/lib/pkgconfig" && pkg-config --exists --print-errors aom && echo $?

  ...it returns a 0, indicating aom.pc was found in the PKG_CONFIG_PATH - which either rules out an issue with PKG_CONFIG_PATH or makes it a very specific one in which only configure and make aren’t able to see PKG_CONFIG_PATH, despite being run from the same shell just a moment after.

  How can I resolve this ?

  ---

  EDIT

  I did some further investigation by looking into ffbuild/config.log, and noticed that it shows a warning :

  WARNING : x86_64-w64-mingw32-pkg-config not found, library detection
  may fail.

  However, doing apt-cyg search x86_64-w64-mingw32-pkg-config shows that particular package as being installed.

  Sure enough, in the /bin folder, there is an extensionless file called x86_64-w64-mingw32-pkg-config, with the following contents :

  #!/bin/sh
  
  exec pkgconf --personality=x86_64-w64-mingw32 $@

  I’ve also found the following related issues, in case they can help anyone else figure out what’s going on here :

  https://ffmpeg.org/pipermail/ffmpeg-devel/2012-June/126683.html

  Warning "i686-mingw32-pkg-config not found, library detection may fail" while cross compiling ffmpeg

  https://github.com/Microsoft/FFmpegInterop/issues/106

  https://gitlab.gnome.org/GNOME/librsvg/issues/239

  https://ffmpeg.zeranoe.com/forum/viewtopic.php?t=2041

• Anomalie #3305 (Nouveau) : Balise fermée automatiquement dans un bloc code

  21 octobre 2014, par Franck Dalot

  Bonjour
  Je viens de me rendre compte d’un bug sur contrib (le bug est également présent sous SPIP 3.0.18-dev [21616]) mais semble absent sous spip 3.1
  Quand une personne répond dans le forum en entourant par "code"

  <necessite version="[2.0.0;2.1.99]"></necessite>
  La prévisalisation est ok, par contre après avoir valider le message, cela écris :
  <necessite version="[2.0.0;2.1.99]"></necessite>
  Cordialement, Franck