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• recording live video stream from tv card using ffmpeg at window

  16 août 2013, par user2688423

  I want to capture thumbnail every 1 second from tv card(tv signal) using ffmpeg in window.

  first of all, to record live video from tv card, I tried below.

  ffmpeg -f dshow -i video="SKYTV HD USB Maxx Video Capture" -r 20 -threads 0 D ://test.mkv

  But it didn't work.
  the Error message is

  "[dshow@000000000034d920] Could not run filter
  video=SKYTV HD USB Maxx Video Capture : Input/output error"

  I use the device called 'SKYTV HD USB Maxx Video Capture' for getting tv signal(TV card).

  (people usually suggest "ffmpeg -f oss -i dev/dsp -f video4linux2 -i dev/video0/tmp/out.mpg"
  but I dont think it works at window. this is the error message i got : "Unknown input format: 'video4linux2'")

  what should i do to record live video and get thumbnail every 1 second from tv card(tv signal) using ffmpeg in window ?

  Please help..!

• 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 I've been looking at Youtube_DL- and/or FFMpeg-related internet posts and all were either outdated (discord.py==0.16.x) or involved downloading youtube videos (can't do that with ongoing streams).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

• 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