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• PHPVideoToolkit getFFmpegInfo() returns an array with empty codecs

  11 novembre 2012, par user16948

  I have install ffmpeg and ffmpeg -codecs returns a huge list of codecs. But output of the following code :

      $ffmpeg = $toolkit->getFFmpegInfo(FALSE);
  
      print_r($ffmpeg);

  is this :

    ...
  
    [codecs] => Array
  
          (
  
              [video] => Array
  
                  (
  
                  )
  
  
  
              [audio] => Array
  
                  (
  
                  )
  
  
  
              [subtitle] => Array
  
                  (
  
                  )
  
  
  
          )

  It doesn't find any codec. Any suggestion ? (I have installed ffmpeg from source)

• HTML5 Progressive Streaming — no follow-up range requests

  20 septembre 2023, par user2333829

  I'm working on an embedded device that is recording video on the fly. I'd like to stream that to an HTML5 video element, using our own custom server. I have this almost working and would like some help.

  



  So far as I can tell, I've got libav / ffmpeg doing their job right. I encoded an mp4 in RAM with the moov atom at the start of the file. I've written this file to disk and it plays everywhere it should.

  



  The problem, I think, lies with how I'm responding to HTTP range requests. When I try to do a live stream, I get an initial range request from the browser / player (currently tried Chrome, Firefox, and VLC) for bytes:0-. I responded with some initial bytes. The browser / player actually plays this fine, but never asks again. So the live stream doesn't work, just the first 3 seconds or whatever.

  



  I've looked at the RFC spec of partial content, and my understanding is I'm doing what I should be... Clearly I'm not though. Here is an example of a request / response with Chrome as the requester :

  



  ---

  



  
get /live.mp4 HTTP/1.1
host: localhost:1235
connection: keep-alive
accept-encoding: identity;q=1, *;q=0
user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36
accept: */*
dnt: 1
accept-language: en-GB,en-US;q=0.9,en;q=0.8
range: bytes=0-


  



  
HTTP/1.1 206 Partial Content
Accept-Ranges: bytes
Content-Type: video/mp4
Content-Length: 182400
Content-Range: bytes 0-182399/*


  



  ---

  



  Again, with that request / response pair, Chrome plays the first 182400 bytes but never makes a second request. I thought having the '*' in Content-Range would make this happen...

  


• avformat/url : check url root node when rel include double dot and trim double dot

  29 avril 2020, par Steven Liu

  avformat/url : check url root node when rel include double dot and trim double dot
  fix ticket : 8625
  
  and add testcase into url for double dot corner case
  Signed-off-by : Steven Liu <lq@chinaffmpeg.org>
  

  • [DH] libavformat/tests/url.c
  • [DH] libavformat/url.c
  • [DH] tests/ref/fate/url