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• Transcoding and Streaming a Video Simultaneously with Seek

  5 août 2013, par Yaron Budowski

  Is it technically possible to transcode and stream a video simultaneously without losing the ability to seek (i.e. in my case, the Android default video player will still allow the user to seek to any time frame in the video).

  I know it's possible to do so if the streaming of the video is done after transcoding the entire file and processing it (in other words, the user will have to wait for the entire transcoding process to finish before the streaming starts).

  P.S. - I don't mind which container / video format to use.

• what is the best open source framework for programmatically producing .mov or .flv video files ? [closed]

  12 mai 2013, par Andrew Arrow

  I would like to programmatically produce a simple animation video. Don't think "Toy Story" level of animation, think simple stick figures moving around the screen and other very simple lines and dots in black and white only. The point of the video is to explain a complicated scientific concept with a 5 minute video vs. pages and pages of text trying to describe images with words.

  What is the best open source framework to make a .mov or .flv file that I can then upload to youtube or vimeo. I could use ImageMagick to write out jpeg after jpeg, and then ffmpeg to turn those jpegs into a .mov file. But is there a better framework out there for simple animation like this ? I feel like the ImageMagick to ffmpeg route is going to involve a lot of me writing code from scratch to make a stick figure walk across the screen.

• HTTP Live Streaming MPEG TS segment

  23 janvier 2012, par user1069624

  I'm using FFMPEG and a free segmenter (Carson Mcdonald's) to produce my ts segments which i later save to a web server and play with Quicktime by playing the .m3u8

  If I have segments 1,2,3,4 and another stream with segments 1,2,3,4 and would like to interleave them what should I do. If i do as follows : 1,2, other stream's 3, 4 It works fine. However, If i want to do as follows : 1,2, other stream's 4, 4 it doesn't work.

  In other words the segment to be added must have the same number as the one I'm replacing. Why is that ? Does it have to do with PCR ? I would like to be able to interleave any segment anywhere.. How can I do that ?

  Thank you,

  The M3U8 file is

  #EXTM3U 
  
  #EXT-X-TARGETDURATION:10 
  
  #EXT-X-MEDIA-SEQUENCE:21 
  
  #EXTINF:10, sample_ep_386k-00021.ts 
  
  #EXTINF:10, media_2.ts 
  
  #EXTINF:10, sample_ep_386k-00023.ts