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• Encoding videos for use with Adobe Live Streaming

  10 mai 2016, par FiddleMeRagged

  I have an original video coded at 20Mbps, 1920x1080, 30fps and want to convert it down to be 640x480 30fps at a range of (3 different) bitrates for use by Adobe Live Streaming.

  Should I use ffmpeg to resize and encode at the 3 bitrates then use f4fpackager to create the f4m f4f and f4x files or just use ffmpeg to reduce the resolution and then f4fpackager to encode the relevant bitrates ?

  I’ve had several tries so far, but when encoded the videos seem to play at a much larger bitrate than they’ve been encoded at. For example, if I set up the OSMF to play from my webserver, I’d be expecting my best encoded video to play at 1,500kbps but it’s way above that.

  Has anyone had any experience of encoding for use like this ?

  I’m using the following options to f4fpackager

  --bitrate=1428 --segment-duration 30 --fragment-duration 2

• iPhone camera live steaming

  15 juin 2012, par Inder Kumar Rathore

  I have downloaded ffmpeg lib file and complied it for armv7. I added ffmpeg lib files in my project successfully. i am able to get iphone camera live streams using AVFoundation.

  Now the problem is how will i convert iphone camera streams output as a input of ffmpeg for decode ? Check my code

  - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection {
  
  
  
  
  
  CMBlockBufferRef bufferData = CMSampleBufferGetDataBuffer(sampleBuffer);
  
  size_t lengthAtOffset;
  
  size_t totalLength; char* data; 

  if(CMBlockBufferGetDataPointer(bufferData, 0, &lengthAtOffset, &totalLength, &data ) != noErr )
  NSLog(@"error !") ;
  
  

  Kindly suggested me which function of ffmpeg lib is used for decoding and how will i put CMBlockBufferRef as a input of this ??

  Thanks

• Discord.py - Streaming Youtube Live into Voice

  4 juin 2021, par SUPER MECH M500

  I'm back on the stacks, was banned from asking questions because they were terrible apparently, but I need help on something I've done a lot of research on but cannot find my answer ;

  


  I need to be able to stream a youtube live stream's audio into a VC for radio music using discord.py Rewrite. I've been looking at Youtube_DL- and/or FFMpeg-related internet posts and all were either outdated (discord.py==0.16.x) or involved downloading youtube videos (can't do that with ongoing streams).

  


  And I've also tried to look through the discord.py v0.16.12 voice_client.py create_ytdl_player. But to no avail, I could not find any solutions.

  


  This is my current situation in my code. It is a background task in one of my cogs.

  


      @loop(seconds=5)
    async def check_voice(self):
        try:
            channel = await self.bot.fetch_channel(819346920082112532)
        except NotFound:
            print("[IR] `韎