Advanced search

On other websites (6439)

• How to overlay frames before making a gif FFMPEG WEBM TO GIF

  10 February 2021, by AVID_FFMPEG

  I'm using windows batch to do some ffmpeg work

  


  Basically what I need to do is this

  


  Add an overlay every X frames (10 in this example, 1, 11 , 21 and so on) to a webm source to a gif.

  


  The how doesn't really matter as long as I keep the quality of my current palette/filter/dither usage

  


  Solution I found: I made a Video to png, overlay the png with batch for loop and make a gif

  


  Problem I encountered: Gif doesn't work with the overlayed pngs

  


  rem EXTRACTING
ffmpeg !time_range! -i "input.webm" -vsync 0 -vf "fps=20,scale=!size!" "output_%%03d.png" 


  


  the two %% is because you need to escape it in batch so ffmpeg sees "%03d"

  


  REM OVERLAYING
for %%i in (_*1.png) do (
ffmpeg -y -v error -i %%i -i %tmp_blank_frame% -filter_complex "overlay"  overlayed_%%~nxi
del %%i
)
REM REPLACING
rename "overlayed_*" "//////////*"


  


  It is not pretty by any means, but it works... somewhat.

  


  It does it's job of overlaying and renaming proprely, but when I recompile the frames into a gif with

  


  ffmpeg -y -framerate 20 -i "output_%%03d.png" -i "!palette!" -filter_complex "!filters! [v]; [v][1:v] paletteuse=dither=!dither!" "overlayedgif.gif"


  


  it just gives me an error "Error marking filters as finished" and does nothing.

  


  ffmpeg -y -framerate 20 -i "output_%%03d.png" -i "!palette!" "overlayedgif.gif"


  


  It makes the gif without the black frames (skips them) also terrible quality

  


  I am open to any suggestion. Pretty new to this whole ffmpeg and this is starting to be very complicated for me so there might be some code that I overlook or don't fully understand

  


  Important note IF I REMOVE THE OVERLAY/RENAME BLOCK MY SCRIPT WORKS WONDERS!!!

  


  EDIT : edited confusing variables im using in my script

  


• Making a thumbnail using fluent-ffmpeg returns ffprobe

  29 April 2019, by user10204157

  I am getting the following error:

  Error: ffprobe exited with code 1
  
  ffprobe version 4.1.1 Copyright (c) 2007-2019 the FFmpeg developers
  
    built with gcc 8.2.1 (GCC) 20190212
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
  
  --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  [tcp @ 0000020813d01740] Connection to tcp://stemuli.blob.core.windows.net:443 failed: Error number -138 occurred  <------
  
  https://stemuli.blob.core.windows.net/stemuli/mentor-lesson-video-76cbf390-4033-4a92-b127-7df22d5885f8.MOV: Unknown error

  Does this mean that azure’s connection is just being cut off?

• vorbis: Use a local codebook variable

  3 March 2015, by Luca Barbato

  vorbis: Use a local codebook variable
  Makes the code a little simpler.
  

  • [DH] libavcodec/vorbisdec.c