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• Save live video stream .m3u8 to MP4. Video freezes for a few seconds

  11 octobre 2020, par Frodo Baggins

  I am trying to save in MP4 an .m3u8 live stream using FFMPEG.

  


  The version in use is the following : $ ffmpeg -v
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04)

  


  While the command used for saving the stream in MP4 is the the one below :

  


  ffmpeg -y -i https://stream.m3u8 —map 0 —vcodec copy -acodec copy / output.mp4

  


  The file can be successfully opened and played with VLC even though every 3-5 seconds I see that the video freezes every few seconds.

  


  I wonder if it's something that I am missing in the above command.

  


  I also verified whether the issue was related to the connection in use but it does not seem related.

  


• Save first an last frame as a picture

  7 octobre 2020, par Oscar Thees

  I try to cut out the last and the first frame of videos. The following commands work for specific files :

  


  ffmpeg -i TLC00000.AVI -vframes 1 first.jpeg    
ffmpeg -sseof -2 -i TLC00000.AVI -update 1 -q:v 1 last.jpg
    


  


  However, when I start looping them over several files in a directory I am starting to run into problems.

  


  SET "source=C:\Users\...\...\%%~nF"
SET "first=C:\Users\...\...\first%%~nF"
SET "last=C:\Users\...\...\last\%%~nF"

for %%F in (*.AVI) do (
    If not Exist source MkDir first
    ffmpeg -i %%F -vframes 1 first\%%~nF-%%3d.first.jpg)

for %%F in (*.AVI) do (
    If not Exist source MkDir last
    ffmpeg -sseof -2 -i %%F -update 1 -q:v 1 last\%%~nF-%%3d.last.jpg)
Pause


  


  Any help with how to make this loop working is warmly welcome.

  


• How to save the stream URL chunks as a video in NodeJs

  2 octobre 2020, par Harsh Lodhi

  I'm trying to download a piece of video from the below URL using axios.

  


  https://r5---sn-gwpa-civy.googlevideo.com/videoplayback?...&range=32104-500230


  


  I'm using below code to fetch the above URL and for save the chunk to the mp4 file.

  


  axios({
        url: MY_URL`,
        method: 'GET',
        responseType: 'stream'
    }).then(function (response) {
        let buffArray = []
        response.data.on('data', (chunk) => {
            buffArray .push(chunk)
        })

        response.data.on('end', (chunk) => {
            let buff = Buffer.concat(buffArray)
            fs.writeFile('output.mp4', buff, (dt) => {
                console.log("File created");
            })
        })
    })


  


  above code is working fine and I'm able to save the video but the video is not able to play.
when I set the range in URL from &range=32104-500230 to &range=0-500230 then video is working properly. Please try to help that how can I save a video from small chunk of video stream instead of saving full video.