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• How can i burn in the current video playback percentage on to a video stream using FFMpeg

  25 mai, par David Clews

  I've taken alook at the drawtext filter in ffmpeg and it offers the ability to burn in the current local time directly on to the video stream. I would like this sort of behaviour but for a integer percentage value and the percentage symbol % after the actual value. I don't know if this is possible using FFMpeg on the command line. The formula should be something like.

  


  ceil((t/duration)*100)

  


• How to increase video quality of combined video and audio file using ffmpeg

  29 juin 2022, par jettzeong

  I have a scraper script that I am using which utilizes PRAW module to scrape reddit for media.

  


  To downloaded reddit videos, I have written the code below :

  


          video_url = submission.media['reddit_video']['fallback_url'] 
        audio_url = submission.url + "/audio"
        print('Video: ' + video_url)
        print('Audio: ' + audio_url)
        video = requests.get(video_url).content
        audio = requests.get(audio_url).content
        videoname = "D:\\Bot\\reddit_scrape\\" + submission.id + '_video.mp4'
        audioname = "D:\\Bot\\reddit_scrape\\" + submission.id + '_audio.mp4'
        filename = "D:\\Bot\\reddit_scrape\\" + submission.id + '.mp4'
        
        with open(videoname, 'wb') as handler:
            handler.write(video)
        with open(audioname, 'wb') as handler:
            handler.write(audio)

        os.system(f"ffmpeg -i {videoname} -i {audioname} -map 0:v -map 1:a -c:v copy {filename}")
        os.remove(videoname)
        os.remove(audioname)
        save_to_dict(id = submission.id, ext = filename, txt = submission.title)


  


  What this code does is that it fetches the video and audio seperately from reddit, and combines them via ffmpeg.

  


  However, the video created by this block of code is very blurry and has low resolution.

  


  May I know what kind of argument I can use to make my video file play with higher resolution ?

  


• ffmpeg remove part of video, crop, rotate video [duplicate]

  2 novembre 2017, par 1234567

  This question already has an answer here :

  • ffmpeg remove multiple segments from a video rotate and crop video
    
    1 answer
    

  ffmpeg remove part of video, crop, rotate video

  this can be explained with this images
  orginal video

  crop and rotated video

  

  the time details

  original video from which part starting from 10 sec to 16 sec and 20 sec to 26 sec is to be removed

  

  result video