Recherche avancée

Sur d’autres sites (7026)

• Can VideoView be detach and reattached without stopping the stream ?

  17 septembre 2018, par Thierry-Dimitri Roy

  I’m building an app where the user clicks on a button to show a video full screen. Initially the video is attached to a view inside a ViewPager. To be able to show it fullscreen I detach it from its parent and reattach it to the root view. This works fine, except when the video is switched to fullscreen while playing. When I detach a playing VideoView it just stop and I need to restart it. This is not acceptable since the video starts buffering before resume. Here the part of the code where the detach is done :

      final ViewGroup parent = (ViewGroup) findViewById(R.id.parent);
  
  
  
      final ViewGroup root = (ViewGroup) findViewById(R.id.root);
  
  
  
      Button b = (Button) findViewById(R.id.button);
  
      b.setOnClickListener(new OnClickListener() {
  
  
  
          @Override
  
          public void onClick(View v) {
  
              parent.removeView(mVideoView);
  
  
  
              LayoutParams lp = new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
  
              root.addView(mVideoView, lp);
  
          }
  
      });

  Depending of the device, I have a different log error. Probably because the actual video player is provided by the manufacturer and not the Android SDK. Here are the error logs for a Nexus 7 :

  10-30 20:26:18.618: D/NvOsDebugPrintf(124): NvMMDecTVMRDestroyParser Begin 
  
  10-30 20:26:18.618: D/NvOsDebugPrintf(124): --------- Closing TVMR Frame Delivery Thread -------------
  
  10-30 20:26:18.678: D/NvOsDebugPrintf(124): ------- NvAvpClose -------
  
  10-30 20:26:18.678: D/NvOsDebugPrintf(124): NvMMDecTVMRDestroyParser Done 
  
  10-30 20:26:18.678: D/NvOsDebugPrintf(124): NvMMLiteTVMRDecPrivateClose Done 

  I haven’t been able to detach the video without stopping it. I tried using SurfaceView or TextureView without success.

  I also tried finding a third party video player. I found a commercial one (http://www.vitamio.org/) that I can’t really use for business reason. I found an open source one, that hasn’t been updated in the last year (https://code.google.com/p/dolphin-player/).

  I’m currently targeting Android 4.2 or better on tablet only.

  ---

  Note that the ViewPager is not fullscreen. So I can’t use LayoutParams to make the video fullscreen. I need to remove the VideoView from the parent in the ViewPager and add it to the root view to be able to show it fullscreen.

  The URL I’m testing with : http://bellvps1.cpl.delvenetworks.com/media/e1b3e24ecb944abd8f4ed823a0b76ddc/68f78d35296243bfb46d2418f03f2fd0/bande-annonce---the-secret-life-of-walter-mitty-1-9efcc5c6e52ac07a3edf84a1b21967995b7796a2.m3u8

• Export .osp OpenShot project to ffmpeg script as workaround to video export freeze or crash by swap hell

  30 août 2018, par 1000i100

  I have a big video rush 35".

  With OpenShot i’ve cut more than 30 small sequences and concatenate them into one 25" sequence.

  Now i try to export the result as video file but OneShot randomly crash or freeze during the export/encoding between 40% and 80% so after more than an hour of encoding. It look to be a memory leek and a swap saturation with memory allocation deny because no space left.

  I’ve tried with x264(mp4) and vp8(webm) encoding, but nothing worked.

  I’ve opened the .osp file, it’s a big json file with all the clips referred like this :

  {
  
    clips:[
  
      {
  
        title: "",
  
        start:<seconds>.<decimals>,
  
        end:<seconds>.<decimals>,
  
        position:<seconds>.<decimals>
  
      }
  
    ]
  
  }
  
  </decimals></seconds></decimals></seconds></decimals></seconds>

  • title if not renamed is the inputFileName.
  • start clip start time from the input file beginning
  • end clip end time from the input file beginning
  • position clip start position in the output file timeline

  I’ve read ffmpeg can extract video parts / subclip / sequences with cut function :

  ffmpeg -ss 00:00:09.000 -i input.mp4 -to 00:00:20 output.mp4

  Time can be hh:mm:ss.xxx or hh:mm:ss or any amount of seconds, allowing decimals.

  I’ve also read ffmpeg can concat sequences :

  ffmpeg -i "concat:input1.ts|input2.ts|input3.ts" output.ts

  So, how to encode my video with these project data ?

• Restream TS file in HTTP server to RTMP server using ffmpeg

  15 juin 2018, par MatrixCow08

  I want to restream http://example.com/1.ts to a RTMP server.

  The command I use is :

  ffmpeg -i http://example.com/1.ts -ar 44100 -preset medium -crf 22 -x264-params keyint=2:min-keyint=2 -bufsize 500k -vcodec libx264 -b:v 700k -maxrate 700k -r 25 -f flv rtmp://janjuapublisher.com/live/MY_CHANNEL_NAME?key=MY_KEY&id=MY_ID

  I use www.janjua.tv to create my TV channel and it give me the RTMP details as follows :

  FMS URL : rtmp ://janjuapublisher.com/live

  Stream Name : MY_CHANNEL_NAME ?key=MY_KEY&id=MY_ID

  However, I get Connection failed: application rejected and unsupported authentication method when I run this ffmpeg command.

  My command work fine in Twitch’s RTMP server because it is easy to use, but I can’t figure out how to use JanJua.tv .. Where to put the Stream Name, Key, Secret ?

  Any help would be appreciated.

  Thanks !