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• Add support for building fuzzer tools for an individual demuxer

  10 octobre 2020, par Michael Niedermayer

  Add support for building fuzzer tools for an individual demuxer
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] Makefile
  • [DH] tools/Makefile
  • [DH] tools/target_dem_fuzzer.c

• ffmpeg - convert video into individual frame image files ? [closed]

  2 janvier 2021, par MrFunreal

  i am trying to turn every single frame of a video file into png files using ffmpeg.
i have found several guides on how to do that, most of which look the same, by doing this :

  


  


  ffmpeg -i vid.mp4 frames/out%03d.png

  


  


  However, this does not work. FFmpeg for some reason just replaces the "%0" of the output file with the entire path of the bat file and then tells me that's wrong, like so :

  


  


  [image2 @ 000002c6aa87f680] Could not open file :
frames/outG :\Videos\vid_to_frames\3_video_to_frames.bat3d.jpg
av_interleaved_write_frame() : I/O error

  


  


  If i remove the "%0" of the output file it creates a single frame and gives me an error, telling me i need to put the "%03d" into the name, which doesn't work.

  


  


  [image2 @ 000001dc9a09fd40] Could not get frame filename number 2 from
pattern '$filename3d.png'. Use '-frames:v 1' for a single image, or
'-update' option, or use a pattern such as %03d within the filename.
av_interleaved_write_frame() : Invalid argument

  


  


  Is this just broken ?
I found about 20 guides on how to do it, all of which use this exact same method and it just doesn't work.

  


  Does anyone know another way to do this via ffmpeg ? (it must be via ffmpeg)

  


• FFMpeg command output shows 'green pixelated' video

  18 janvier 2021, par DonX

  I am trying to take a single image and add audio resulting in a video playing the entire song with that single image ; much like you see for YouTube videos for songs. The command I am using is from this link : https://askubuntu.com/questions/868283/image-audio-mp4-how-to-make-video-smaller

  


  This is the command :

  


  ffmpeg -loop 1 -framerate 1 -i image.png -i song.aac -c:v libx264 -preset veryslow -crf 0 -c:a copy -shortest output.mp4


  


  It works as intended for having the video file be a small size, and the song plays as well, but depending on the image I used, some of the images appear 'Green' when playing the video.

  


  However though, this command works for any image used :

  


  ffmpeg -loop 1 -framerate 1 -i image.jpg -i music.mp3 -c copy -shortest output.mp4


  


  But the result is a very big file whereas I would like it to be smaller. Any help would be greatly appreciated ! Thank you !

  


  FFMpeg version : 4.3.1