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• How do I convert a .wav file to 16bit 44.1kz using ffmpeg or other utility [closed]

  26 mai 2023, par Seth Edwards

  A preface :
I am building an environment for a my own streaming box. Since building the UI. I turned to the now obsolete MSNTV box to find its UI sound effects.

  


  I found the dump on GitHub. I downloaded and located where the sounds where located.

  


  I listened to them one by one. I noticed that they are wave files. But they sound like they were low quality and may have been compressed before being turned into a wave file.

  


  I was using the Apple Files app on an iPhone 6s running iOS 15.7.1.

  


  They play back fine.

  


  I try importing them into GarageBand for iOS and it gives me an error saying that it only allows 16bit 44.1khz files. This confirmed my suspicion of it being low quality.

  


  I then tried playing them on a Dell Chromebook 3100 running ChromeOS. Chrome’s player would also not play the files.

  


  I need to find out how to convert them to 16bit 44.1khz wave files.

  


  My guess is that since the MSNTV had a small amount of storage space that they compressed the audio.

  


  I tried converting the files to mp3. And they are Noticeably worse.

  


  Does anyone know how to convert these files so they can be played back normally.

  


  In the end I plan to use these files and play them using the pygame library.

  


  I have tried changing the metadata

  


  Converting to mp3

  


• Adding watermark to video

  27 avril 2018, par equallyhero

  I am able to use the moviepy library to add a watermark to a section of video. However when I do this it is taking the watermarked segment, and creating a new file with it. I am trying to figure out if it is possible to simply splice in the edited part back into the original video, as moviepy is EXTREMELY slow writing to the disk, so the smaller the segment the better.

  I was thinking maybe using shutil ?

  video = mp.VideoFileClip("C:\\Users\\admin\\Desktop\\Test\\demovideo.mp4").subclip(10,20)
  
  
  
  logo = (mp.ImageClip("C:\\Users\\admin\\Desktop\\Watermark\\watermarkpic.png")
  
            .set_duration(20)
  
            .resize(height=20) # if you need to resize...
  
            .margin(right=8, bottom=8, opacity=0) # (optional) logo-border padding
  
            .set_pos(("right","bottom")))
  
  
  
  final = mp.CompositeVideoClip([video, logo])
  
  final.write_videofile("C:\\Users\\admin\\Desktop\\output\\demovideo(watermarked).mp4", audio = True, progress_bar = False)

  Is there a way to copy the 10 second watermarked snippet back into the original video file ? Or is there another library that allows me to do this ?

• combine specific mpeg-dash segments (ex int.mp4 + seg_1.m4s +seg_3.m4s) into one single mp4 file

  16 avril 2019, par Liquid

  I am working one video transcoding in FFmpeg and MP4Box. Currently I am trying to combine/merge/concatenate specific MPEG-DASH video segments(m4s ex:int.mp4, seg_1.m4s, seg2,m4s,sge5.m4s) into one mp4 file.

  This the example of what I am trying to do.

  I have followed this thread ("Combine MPEG-DASH segments (ex, init.mp4 + segments.m4s) back to a full source.mp4 ?") but there is a problem while combining the specific m4s segments, while doing that it frames feazed in after seg2 and in seg5 it played again.

  Reference : FFmpeg example