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• stream videos in html page from different servers [on hold]

  24 février 2016, par Aira

  I`m very new in programming(to be honest, I just know HTML !). So, maybe my question is little basic.
  I want to stream 3 differents videos in my HTML page. I know how to stream video from file or URL link in a HTML.The scenario is : I have Ubuntu server(I just know the IP of servers) and I want to stream a video from server1(with its specific IP) and Server2 and so on..So How can I do that ? or just help me to find a tutorial for this issue.
  Another question is, is that possible to run bash file in the html ? is there any specific script for it ? I want to write bash file into the servers to do some ffmpeg command, like mixing to videos and then put the result in another folder.I mean, when end user clicking on the bottom then request enable bash file on the server.

  I really appreciate your help

• Python source code to convert all videos of .avi to .mp4 at a time

  4 juin 2018, par vikash tiwari

  I want to convert nearly 900 videos from .avi to .mp4 . I am currently using ffmpeg to convert a video but this is taking a lot time as i have to manually enter each file name after one step . I m new to python . So is there a way to write a python code that could take all the videos of .avi format from a directory and convert them into .mp4 and store them into a specified directory ? Any help would be highly appreciated .
  Right now i m using this command from my window command prompt to convert the files .
  ffmpeg -i output.avi -codec copy output.mp4

  The code i came up with to do this at a time is :
  for i in .avi ; do
  ffmpeg -i "$i" -codec copy "$i%..mp4"
  done
  But it is showing error in my window terminal

• H264 NAL unit header - detect type and bring custom videos in this format

  7 décembre 2015, par user3387542

  On a special interface on my device, I can see the NAL units passing by. Two example files shown below :

  P-Frames:
  
  00 00 00 01 41 FC 0F 90 86 DE F9 E1 4D 37 AE D3 
  
  24 A9 F2 F7 E8 A0 9A 9E B3 FD FE 3A D2 77 3E 79 
  
  8C 93 2D 75 61 60 A0 FA BF CB 46 B6 67 A6 C2 81 
  
  2B 47 A5 A2 71 5D 4F 90 32 14 EE D5 DE 58 3B 6E 
  
  ...
  
  
  
  I-Frames / Key-Frames:
  
  00 00 00 01 65 B8 20 67 FF FE 1E 8A 00 02 05 BE 
  
  4D 49 85 EB FC 9E 44 F7 D0 CE A0 77 25 CD 80 D4 
  
  4A A4 E5 66 EE E7 F9 17 E5 81 DC 94 9C 2B 3C DF 
  
  DE D2 63 CC 89 98 82 4D AF C6 BF E8 3F 0D 3C BE 
  
  ...

  My goal is, to be able to overwrite this data in order to inject / play my own video. So fare so good, seems to work but it doesn’t look good yet. While replayed NAL units, which were previously stored from the very same interface look good, an injected video doesn’t. I think i did not get the right video format yet.
  I used different tools like ffmpeg to convert videos into a h264 format. But the video still never looks fine. I think the issue is with the key-frames. While I see lots of 00 00 00 01 41 parts in the converted videos, i can’t find a 00 00 00 01 65.

  What kind of video format is this ? And how to convert my own videos into this format ? By using ffmpeg or other tools.

  Thanks in advance