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• How to create m3u8 playlist and mpeg-ts chunks with constant duration by using FFMPEG ?

  15 octobre 2015, par Alexandr

  I have mp4 file (Big Buck Bunny) :
  Duration : 00:09:56.50
  Bitrate : 2048 kb/s
  Size : 1280x720
  fps : 29.97
  I’ve set constant keyframes after 2 second.
  I want to prepare this video for HLS.
  I use this for generate m3u8 playlist and generate ts chunks :

  ffmpeg -i input.mp4 -hls_time 2 out.m3u8

  But unfortunately I don’t understand how it works.
  I’ve thought this command generates 298 chunks of 2 seconds but it generates only 152 chunks with different lengths (3 - 9 seconds).
  But the most strange thing it have created m3u8 file with only 5 links to files.

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:9
  
  #EXT-X-MEDIA-SEQUENCE:148
  
  #EXTINF:8.341667,
  
  out148.ts
  
  #EXTINF:7.841167,
  
  out149.ts
  
  #EXTINF:0.967633,
  
  out150.ts
  
  #EXTINF:8.341667,
  
  out151.ts
  
  #EXTINF:7.140467,
  
  out152.ts
  
  #EXT-X-ENDLIST

  I’ve thought m3u8 file have to includes all part of videos. Can somebody explain me how to create 298 chunks each of 2 seconds and fill m3u8 file properly ?

• Videos storage and streaming [closed]

  12 juillet 2021, par Tomer

  I'll do my best to describe my thought here.

  


  We came across a need to receive videos from users, store them and later on present those videos to different users upon request.
The argument is based on the idea that we can't serve one single file of the same size and quality to all clients. There must be consideration of the client's network quality.
One side claims that the best way to overcome this issue is by storing multiple versions of one file (360p, 480p, 720p etc..) and then based on the client's network quality we will estimate which file is best suited for his conditions. We shall estimate the client's network quality by testing the connection quality to the s3 servers storing our files.

  


  Second party claims that storing one file of high quality is enough. Then, upon request by client we shall stream the file to the client in the suitable encoding and quality using a third party framework (from brief research, ffmpeg, Gstreamer. Its not established yet which and how, only consider the idea.).

  


  Which is more acceptable in modern ways ? Are there any other ideas we haven't thought of ?

  


  Couple of notes. Our backend is written in node, using aws-sdk for s3 and nest for api.

  


  Thanks

  


• Stream Internet radio using ffmpeg

  28 janvier 2014, par Hadi M.NourAllah

  i am a beginner at IOS Development now i make app that streaming internet and there was a problem that there is extinction that ios not support like .asf and .rm and there prifx that ios not support too like mms :// so after a lot of searching a lot of people told me that "use ffmpeg" and after a lot of wasted time i successfully build ffmpeg to my xcode now i am stuck because i don't how i use it .
  so could any one tell me how can i use it please don't tell me use IFrameExtrator because i tried and i failed.