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• FFMPEG - stream download + resize + HVEC convert in one statement ?

  6 mars 2021, par Armitage2k

  I have a collection of 30 to 60 minutes PORTRAIT videos which I download via the below ffmpeg statement. That part works fine, but given that the resolution of the videos is quite high, it results in approx. 1,3 GB mp4 files.

  


  Once downloaded, I usually convert the video to 720p resolution which brings it down to approx. 500 MB per video, and then run another HVEC x265 compression which alas results in 250MB - 350MB sizes.

  


  Since its quite tedious to do all this manually, I was wondering if there is a FFMPEG statement / command I can use that achieves all of this in one go while downloading ?

  


  Below the commands I currently use.

  


  Thank you

  


  Download : ffmpeg -i http://somewebsite.com/path/to/playlist.m3u8 -c copy -bsf:a aac_adtstoasc L2_60min_vinyasa_vicky.mp4

  


  Convert : ffmpeg -i INPUT.mp4 -c:v libx265 -c:a copy -x265-params crf=25 OUTPUT.mkv

  


• Download billboard hot 100 (but only 50) mp3 files

  4 mars 2021, par Atlas

  Yo yo yo. I got this insane idea to get 50 of the billboard hot 100 songs, download them into mp3 files, and then put them on private online radio.

  


  Problem is, the way I do it doesn't download each file one by one, it puts all the music together in one mp3 file. Here's my code so far (terrible, I know... I just wanna throw this together really quickly)

  


  const { getChart } = require("billboard-top-100");
const ffmpeg = require("fluent-ffmpeg");
const { mkdir } = require("fs");
const ytdl = require("ytdl-core");
const YT = require("scrape-youtube").default;

getChart('hot-100', (err, chart) => {
    if(err) console.log(err);
    chart.songs.length = 50;
    for (var i = 0; i < chart.songs.length; i++) {
        var song = chart.songs[i];
        song.artist = song.artist.replace("Featuring", "feat.");
        var name = `${song.artist} - ${song.title}`;
        YT.search(name).then(res => {
            downloadVideo(res.videos[0].link, name).then(_ => { console.log(""); }).catch(console.log);
        }).catch(err => console.log(err));
    };
});

function downloadVideo(url, name) {
    return new Promise((resolve, reject) => {
        var stream = ytdl(url, { filter: "audioonly", quality: "highestaudio" });
        var start = Date.now();

        ffmpeg(stream)
            .audioBitrate(128)
            .save(`${__dirname}/${new Date().getWeek()}/${name}.mp3`)
            .on("end", _ => {
                console.log(`Downloaded "${name}.mp3" - Took ${(Date.now() - start) / 1000} seconds.`);
                resolve(`${name}.mp3`);
            })
            .on("error", _ => reject("something went wong"));
    });
}

Date.prototype.getWeek = function() {
  var onejan = new Date(this.getFullYear(),0,1);
  return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);
}


  


• I can't download m3u8 streaming video from ffmeg ?

  21 février 2021, par Dattokun

  ffmpeg -i https://s8.8giaitri.com/hls/df465cd92fbf32553522c9e1a5e5b3b2/df465cd92fbf32553522c9e1a5e5b3b2.m3u8 -c copy 123.mkv

  


  [hls @ 000002042f874fc0] Skip ('#EXT-X-VERSION:3')
[hls @ 000002042f874fc0] Opening 'https://s8.8giaitri.com/hls3/df465cd92fbf32553522c9e1a5e5b3b2/df465cd92fbf32553522c9e1a5e5b3b2-0.html?msKey=m5' for reading
[hls @ 000002042f874fc0] Opening 'https://s8.8giaitri.com/hls3/df465cd92fbf32553522c9e1a5e5b3b2/df465cd92fbf32553522c9e1a5e5b3b2-1.html?msKey=m5' for reading
[hls @ 000002042f874fc0] Could not find codec parameters for stream 0 (Video: png, none(pc)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, hls, from 'https://s8.8giaitri.com/hls/df465cd92fbf32553522c9e1a5e5b3b2/df465cd92fbf32553522c9e1a5e5b3b2.m3u8':
  Duration: 00:23:47.05, bitrate: 0 kb/s
  Program 0
    Metadata:
      variant_bitrate : 0
    Stream #0:0: Video: png, none(pc), 25 tbr, 25 tbn, 25 tbc
    Metadata:
      variant_bitrate : 0
Output #0, matroska, to '123.mkv':
Output file #0 does not contain any stream