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• ffmpeg filtre ocr and ocv

  21 août 2016, par user3689259

  i want to know how to use Filtre ocr and ocv , on FFmpeg . i dont find any doc for the 2 filter ffmpeg .
  this is doc on ffmpeg

  Optical Character Recognition
  
  
  
  This filter uses Tesseract for optical character recognition.
  
  
  
  It accepts the following options:
  
  
  
  datapath
  
  
  
      Set datapath to tesseract data. Default is to use whatever was set at installation.
  
  language
  
  
  
      Set language, default is "eng".
  
  whitelist
  
  
  
      Set character whitelist.
  
  blacklist
  
  
  
      Set character blacklist. 
  
  
  
  The filter exports recognized text as the frame metadata lavfi.ocr.text. 

• Pick 2 lang stream and one video ffmpeg

  7 juin 2023, par Gwildor

  Please help me. I have try alot of diffrent code to get this to work, but i can't fix it. So now im going to try to get pro help from you :)

  


  I use this code, it works perfect, but it select all audio stream from eng and swe. How can i get only ony stream of eng and swe audio and one video ?

  


  for f in /mnt/re-encode/*/*.mkv_; do /usr/local/bin/ffmpeg -fflags +igndts -analyzeduration 2147483647 -probesize 2147483647 \ -hide_banner -sn -err_detect ignore_err -init_hw_device vaapi=foo:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device foo -i "$f" \ -b:v 6M -minrate 6M -maxrate 6M -bufsize 6M \ -profile:v 100 -level 41 -bf 0 -r film -sn -movflags +faststart+write_colr+prefer_icc \ -map 0:v:0 -map 0:a:m:language:eng? -map 0:a:m:language:swe? -filter_hw_device foo -vf "deinterlace_vaapi,scale_vaapi=w=-2:h=720,hwdownload,format=nv12|vaapi,subtitles='${f%.*}.srt',hwupload" -c:v h264_vaapi \ -c:a:0 aac -ac 2 -af "volume=2" -b:a 256k \ -f mp4 -y -hide_banner "${f%.*}_b.mp4_"

  


  I have tryc pipe : and /dev/null

  


• Code library for image processing [on hold]

  1er septembre 2014, par user3928079

  Dear Stack Overflow Users,

  I am looking to create my programming portfolio as a graduate of Kennesaw State University by July 2015, when I graduate. I want to create at least 3 cross platform programs related to video or animation. In the package there will be a program for playing video and music files, a program for converting video and music files, and either a program upscaling video and image files or a program that helps animators create animation like Flipbook Pro. Since Java is cross platform, and Java is the language I’m more comfortable with, I’ll develop the software in Java, unless of course Python is cross platform as well. May you please recommend me some image processing libraries that will help me accomplish the development of these types of software programs. For the upscaling program, an upscaling algorithm from BenVista called S-Spline Max is needed, especially since I want to preserve the detail of the image, because in upscaling, you are unable to gain new information from the original information. What are some good image processing libraries I can use. I know of OpenCV, but what do a lot of programs use, high profile or low profile, like Adobe Premiere Pro or Davinci Resolve. FFMPEG is a good video library, but can it easily accomplish what I need ? What are some others that can help me in my 11 month long quest ?

  Regards,

  Jordan White