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• Is there any way to get the exact audio .wav from a .mp4 video ? (same length and same duration)

  25 novembre 2022, par yuan gan

  I extracted .wav files from many short mp4 videos. (3-6 seconds) But the extracted xxx.wav can not be aligned with .mp4 videos in Premiere. Some videos are 1 frame, and some 2 frames behind.

  


  I used ffmpeg as the following command line :

  


  ffmpeg -i xxx.mp4 xxx.wav

  


  I tried -async or -vsync, but not worked. Here is an example :
1 frame shift

  


  Here is the source mp4 and the extracted wav :
https://drive.google.com/drive/folders/1BFS0JLCPqA3YDMIahlorXTaRTFTJaPfU?usp=share_link

  


  Do you know what caused the problem ? Is there any way to get the exact audio .wav from a .mp4 video ? (Aligned with frame level) Thank you very much.

  


• avformat/mov : Set fragment.found_tfhd only after TFHD has been parsed

  15 juin 2019, par Michael Niedermayer

  avformat/mov : Set fragment.found_tfhd only after TFHD has been parsed
  Fixes : Assertion failure
  
  Fixes : crbug971646.mp4
  Reported-by : Matt Wolenetz <wolenetz@google.com>
  
  Reviewed-by : Matt Wolenetz <wolenetz@google.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/mov.c

• Add different animation for different frame in video using ffmpeg android

  5 mars 2017, par Sachin Suthar

  I am trying to apply animations for the particular video frame but hereby I’m not seeing that video frame by which I have to apply the animation. I only need fade in and fade out frame and display it as slide show video. Do you have any idea about this ?

  for ex : I want to create an application like this one : https://play.google.com/store/apps/details?id=com.scoompa.slideshow

  I am using the same command which was given to this url but for the particular 5 second video hide and not getting slide show effect.