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• How to manage Accord.video.ffmpeg frame setting for real time output

  3 décembre 2019, par M.Farrukh

  I am using accord for recoding desktop but i have an issue in making video.
  when video creates I will become to fast or too slow.

  Here is the code :

  VideoFileWriter writer;
  
  writer.Open(path + "\\video.mp4", re.Width - 6, re.Height - 6, 9, VideoCodec.H264, 15000);

  I want to make it as real-time like if I made video of 5 minutes then it will show 5 minutes in the player.

• Streaming video segments uploaded in real time

  3 avril 2013, par HaneTV

  I have an application that send quicktime video segments (5s) to a nodejs server that convert them into mpeg-ts in order to stream them to a wowza server in real time :

  ffmpeg -i tempPath -c copy -bsf:v h264_mp4toannexb -f mpegts uploadDir/file.ts

  I want to know if there is a way to stream those segments in real time as they come on my nodejs server to a wowza server without interruption (assuming I can get the segments in time).
  I tried an Http live streaming style by making a playlist like this (updated when segments are uploaded)

  #EXTM3U
  
  #EXT-X-PLAYLIST-TYPE:EVENT
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-VERSION:3
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXTINF:5,
  
  movie0.ts
  
  #EXTINF:5,
  
  movie1.ts
  
  #EXTINF:5,
  
  movie2.ts

  And calling ffmpeg to send it to wowza :

  ffmpeg -re -i hls+file://mypath/uploadDir/playlist.m3u8 -c copy -f flv rtmp://127.0.0.1/live/stream

  but without any success : ffmpeg doesn't want to stream without #EXT-X-ENDLIST tag and removing the 'hls+' produces lots of errors st:0 PTS: 0 DTS: 0 < 4997 invalid, clipping

  Is there a way to accomplish that ?

• Is it possible to merge two or more videos in real-time like this ?

  25 février 2015, par Marko

  Is it possible to play video online that’s made of two or more video files ?

  Since my original post wasn’t clear enough, here’s expanded explanation and question.

  My site is hosted on Linux/Apache/PHP server. I have video files in FLV/F4V format. I can also convert them to other available formats if necessary. All videos have same aspect ratio and other parameters.

  What I want is to build (or use if exist) online video player that plays video composed of multiple video files concatenated together in real-time, i.e. when user clicks to see a video.

  For example, visitor comes to my site and sees video titled "Welcome" available to play. When he/she clicks to play that video, I take video files "Opening.f4v", "Welcome.f4v" and "Ending.f4v" and join/merge/concatenate them one after another to create one continuous video on the fly.

  Resulting video looks like one video, with no visual clues, lags or even smallest observable delay between video parts. Basically what is done is some form of on-the-fly editing or pre-editing, and user sees the result. This resulting video is not saved on the server, it’s just composed and played that way real-time.

  Also, if possible, user shouldn’t be made to wait for this merging to be over before he/she sees resulting video, but to be able to get first part of the video playing immediately, while merging is done simultaneously.

  Is this possible with flash/actionscript, ffmpeg, html5 or some other online technology ? I don’t need explanation how it’s possible, just a nod that it’s possible and some links to further investigate.

  Also, if one option is to use flash, what are alternatives for making this work when site is visited from iphone/ipad ?