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• Storing high quality video stream (from IP Action Camera) continuously to a Storage Device and issues around Write-Speed bottlenecks

  21 mai 2017, par Aldo

  I am looking to get an Action Camera (Eken H8R, or a GoPro) for a project. Let me explain the scenario I have :

  I will obtain a live stream from the camera on to a Raspberry Pi (over WiFi) as shown here. Next, I want to continuously segment this live stream into 10-15 minute video clips and store them in an external Hard Drive (which is connected to the RPi). I am considering this thread, and the avconvcommand mentioned in the answer by Alexander.

  Now, my concern is write-speed limitations. The video stream would probably have a high bitrate, and might be 4k30fps, in which case file sizes would be huge. Would write speed to disk be a bottleneck ? If so, how will the Pi maintain a buffer to achieve this ? Could I run out of space as the memory stick on the Pi would only be around 8 gigs ? If so, what’s a better alternative ? Please correct me if I’m wrong on these as I’m only a beginner.

• I'm trying to merge videos using fluent-ffmpeg, but some times it merges videos , but whenever we tries to merge videos second time it shows error

  9 janvier 2024, par Asif Mujawar

  const express =require('express')
const app = express()
const ffmpeg = require('fluent-ffmpeg')
const ffmpegPath = require('@ffmpeg-installer/ffmpeg')
const ffprobe = require('@ffprobe-installer/ffprobe')

const first = './videos/first.mp4'
const second = './videos/second.mp4'
const third = './videos/third.mp4'
const fourth = './videos/fourth.mp4'

ffmpeg.setFfprobePath(ffprobe.path)
ffmpeg.setFfmpegPath(ffmpegPath.path)

app.use(express.json())

app.use("/",(req,res)=>{
    res.send("hello")

    ffmpeg()
    .input(first)
    .input(second)
 
    .on('end', function() {
      console.log('files have been merged succesfully');
    })
    .on('error', function(err) {
      console.log('an error happened: ' + err.message);
    })
    .mergeToFile("final.mp4")
  })
  

app.listen(8800,()=>{
    console.log("backend is running 8800")
})



  


  but it shows error whenever we try to merge videos second time

  


  an error happened : ffmpeg exited with code 1 : Cannot find a matching stream for unlabeled input pad 3 on filter Parsed_concat_0

  


  an error happened : ffmpeg exited with code 1 : Cannot find a matching stream for unlabeled input pad 3 on filter Parsed_concat_0

  


• Unable to receive RTP payload type 96 without an SDP file describing it

  13 décembre 2017, par BanaSong

  How can I use SDP files in iOS FFmpeg ? I’ve tried this :

  char *url = "rtp://127.0.0.1:1234"; 
  
  AVFormatContext *oc = NULL; 
  
  avformat_open_input(&oc, url, NULL , NULL); 

  But I get the following error :

  [rtp @ 028568e0] Unable to receive RTP payload type 96 without an SDP file
  describing it.