Recherche avancée

Sur d’autres sites (5731)

• avformat/libopenmpt : Probe file format from file data if possible

  21 février 2018, par Jörn Heusipp

  avformat/libopenmpt : Probe file format from file data if possible
  When building with libopenmpt 0.3, use the libopenmpt file header
  
  probing functions for probing. libopenmpt probing functions are
  
  allocation-free and designed to be as fast as possible.
  For libopenmpt 0.2, or when libopenmpt 0.3 file header probing cannot
  
  probe successfully due to too small probe buffer, test the filename
  
  against the file extensions supported by the libopenmpt library that
  
  is actually linked, instead of relying on a hard-coded file extension
  
  list. File extension testing is also allocation-free and designed to
  
  be fast in libopenmpt. Avoiding a hard-coded file extension list is
  
  useful because later libopenmpt versions will likely add support for
  
  more module file formats.
  libopenmpt file header probing is tested regularly against the FATE
  
  suite and other diverse file collections by libopenmpt upstream in
  
  order to avoid false positives.
  FATE passes with './configure —enable-libopenmpt' as well as with
  
  './configure —enable-libopenmpt —enable-libmodplug'.
  libopenmpt probing adds about 5%..10% cpu time (depending on precise
  
  usage pattern and host CPU and compiler version used for libopenmpt)
  
  compared to all current internal FFmpeg probing functions combined in
  
  tools/probetest for all of its module formats combined (currently 41
  
  modules formats in libopenmpt 0.3.4 and 234 file formats in FFmpeg).
  Signed-off-by : Jörn Heusipp <osmanx@problemloesungsmaschine.de>
  
  Reviewed-by : Josh de Kock <josh@itanimul.li>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/libopenmpt.c

• Revision 8f089cbd2e : Correct the allocation size for ssim_vars Ssim_vars is used to accumulate stats

  3 août 2015, par Yaowu Xu

  Changed Paths :
   Modify /vp9/encoder/vp9_encoder.c

  
  
  Correct the allocation size for ssim_vars

  Ssim_vars is used to accumulate stats based 4x4 pixel blocks, this
  commit changes the allocations size to be based on mi_rows and mi_cols
  to avoid out-of-bound memory access for larger size videos. The hard
  coded 720x480 can only work for image size up to 2880x1920.

  Change-Id : Id9d07f3f777385b448ac88a6034b7472e4cf3c79

• How to use FFMPEG for a whole directory ? (Example code i found on a different thesd doesn't work for me) [closed]

  17 juillet 2020, par TrainNutter

  I have discovered that FFMPEG is a thing and I'm wondering how i can compress many files in 1 bat file execution and that the newly compressed filed keep the same name as the Raw files and subsiquently replace the raw file in MP4 format

  


  I am wondering this as i have over 700GB of Raw videos spanning over 3+ years of recording youtube videos (just for fun) and that my 2TB hard drive is now almost full lol

  


  I Tried using this example but it didn't work for some reason

  


  for i in *.mp4;
    do name=`echo "$i" | cut -d'.' -f1`
    echo "$name"
    ffmpeg -i "$i" "${name}.mp4"
done


  


  Edit : I am using Windows 10