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• Can you reuse an init.mp4 file for two separate FMP4 videos if they are encoded to the same specification ?

  19 février 2024, par TCR

  I have two separate FMP4 (Fragmented MP4) videos that I need to encode. Both videos will be encoded to the same specifications, including resolution, bitrate, and codec settings. I understand that each FMP4 video typically includes an init.mp4 file containing initialization data.

  


  My question is : can I reuse the same init.mp4 file for both videos since they are encoded to the same spec ? Would this cause any issues with playback compatibility or any other potential problems ?

  


  Since the moov atom contains general info and timing information meta-data, and both videos are encoded to the same specification, my thought is you could reference one init file for playback of both videos. If I could guarantee that encoding specifications are the same, what would be the consequence of such an approach ?

  


• FFMPEG How to merge several videos to one file with fade effect ?

  10 juin 2016, par user2455079

  Need to merge several videos to one (for example 5 videos) with simple fade transition (video length various from file to file) if resolution is larger than 1280x720 must be resized proportionally and add sound track mp3 file to whole video. (Video files doesn’t contain audio)

  Only found this solution :
  http://superuser.com/questions/778762/crossfade-between-2-videos-using-ffmpeg
  But uses static file length in parameters...

• Join videos without interruption with removing extra scenes automatically

  19 janvier 2014, par RarLines

  I've tens of splitted videos from a video.

  My english is poor so I will try explain with a simple example :

  The original video scenes like so: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14

  But I had never the original video. I've these videos :

  Video_1.part scenes: 1, 2, 3, 4, 5
  
  Video_2.part scenes: 5, 6, 7, 8, 9 (5 is extra !)
  
  Video_3.part scenes: 9, 10, 11, 12, 13, 14 (9 is extra !)

  When I try to concatenate (or join, merge, combine...etc) these videos with using ffmpeg, the scenes the output file are liked that :

  The output video scenes: 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14

  As you can see, when I watch the output video there are interruptions between videos.

  Is there any technical way to join videos without interruption (or nonstop, continuous...etc) ?

  Please note that, my example is so simple. I'm not sure that the splitted videos have regularly extra scenes. If I was sure, I could crop equally. Maybe the length of extra scenes are equal. But I couldn't check.

  Hope you will show an intelligent method. Thanks