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• FFmpeg youtube stream get corrupted until restart

  19 février 2023, par unpwn

  I am streaming images from python to youtube using ffmpeg.
It's working fine with just one problem.
Sometimes the stream get somehow corrupted an the stream looks like this :

  


  Corrupted stream image

  


  Or you can see for yourself in the stream itself : https://www.youtube.com/watch?v=PG6NLtr0jjM (Scroll back to the beginning)

  


  Then I have to restart ffmpeg and its working fine. Sometimes an error occurs regarding the network and I have to automatically restart the stream. Then there is the possibility it is corrupted again.

  


  The parameters for ffmpeg are the following :

  


  cmd_out = ['ffmpeg',
       '-re',
       '-f', 'concat',
       '-i', os.path.join(BASE_DIR, 'music', 'music.txt').replace('\\', '/'),           
       '-r', '1',
       '-f', 'image2pipe',
       '-vcodec', 'png',
       '-r', '1',
       '-i', '-',
       '-c:v', 'libx264',
       '-c:a', 'copy',
       '-g', '4',
       '-f', 'flv',
       'rtmp://a.rtmp.youtube.com/live2/{}'.format(stream_key)]  


  


  I never had that problem testing it on windows. It just appears when I use my linux server.

  


  I am using ffmpeg version 3.2.18-0+deb9u1 and the generated images are fine, when I save them to a normal file.

  


  Does someone know how to fix it ? Or where the problem is comming from ?

  


  ---

  


  Solution : An old ffmpeg version was available while using docker. I solved the problem by using a static build from https://www.johnvansickle.com/ffmpeg/

  


  I used this to use it in docker :

  


  WORKDIR /app
ADD ./ffmpeg /app
RUN mv ffmpeg /usr/local/ffmpeg
RUN chmod +x /usr/local/ffmpeg


  


  Until now the error seems to be solved.

  


• Node js async/await promise problem with ytdl and ffmpeg

  31 août 2020, par WorkoutBuddy

  I built a simple youtube downloader cli. It looks like this (without any arg parsing for easier reproduction) :

  


  const ytdl = require('ytdl-core');
const config = require('config');
const progressBar = require('./progressBar');
const logger = require('./logger');
const ffmpeg = require('fluent-ffmpeg');

const url = 'https://www.youtube.com/watch?v=Np8ibIagn3M';

const getInfo = async (url) => {
    logger.info(`Getting metadata for ${url}`);
    const response = await ytdl.getBasicInfo(url);
    const info = response.videoDetails.title;
    logger.info(`Title: ${info}`);
    return info;
};

const getStream = async (url) => {
    logger.info(`Downloading from ${url} ...`);

    let allReceived = false;
    return new Promise((resolve, reject) => {
        const stream = ytdl(url, {
            quality: 'highest',
            filter: (format) => format.container === 'mp4',
        })
            .on('progress', (_, totalDownloaded, total) => {
                if (!allReceived) {
                    progressBar.start(total, 0, {
                        mbTotal: (total / 1024 / 1024).toFixed(2),
                        mbValue: 0,
                    });
                    allReceived = true;
                }
                progressBar.increment();
                progressBar.update(totalDownloaded, {
                    mbValue: (totalDownloaded / 1024 / 1024).toFixed(2),
                });
            })
            .on('end', () => {
                progressBar.stop();
                logger.info('Successfully downloaded the stream!');
            });
        return resolve(stream);
    });
};

const convertToMp3 = async (stream, title) => {
    return new Promise((resolve, reject) => {
        ffmpeg({ source: stream })
            .output(`${config.get('audioDir')}/${title}.mp3`)
            .audioBitrate('192k')
            .run();
        return resolve();
    });
};

const main = async (url) => {
    const info = await getInfo(url);
    console.log('here 1');
    const stream = await getStream(url);
    console.log('here 2');
    await convertToMp3(stream, info);
    console.log('done');
};

main(url);


  


  The output looks like :

  


  ➜ node youtube.js
info:    Getting metadata for https://www.youtube.com/watch?v=Np8ibIagn3M
info:    Title: Tu boca -  (Bachata Remix Dj Khalid)
here 1
info:    Downloading from https://www.youtube.com/watch?v=Np8ibIagn3M ...
here 2
done
[Progress] [████████████████████████████████████████] 100% | Downloaded: 7.15/7.15 MB | Elapsed Time: 5s
info:    Successfully downloaded the stream!


  


  However, I would expect this output :

  


  ➜ node youtube.js
info:    Getting metadata for https://www.youtube.com/watch?v=Np8ibIagn3M
info:    Title: Tu boca -  (Bachata Remix Dj Khalid)
here 1
info:    Downloading from https://www.youtube.com/watch?v=Np8ibIagn3M ...
[Progress] [████████████████████████████████████████] 100% | Downloaded: 7.15/7.15 MB | Elapsed Time: 5s
here 2
info:    Successfully downloaded the stream!
done


  


  I think I have troubles to understand async/await. As far as I understood, promisifying a function allows me wait for the result. However, it seems that it does not work. I do not know why and how to properly debug it.

  


  EDITED :

  


  const getStream = async (url) => {
    logger.info(`Downloading from ${url} ...`);

    let allReceived = false;
    return new Promise((resolve, reject) => {
        const stream = ytdl(url, {
            quality: 'highest',
            filter: (format) => format.container === 'mp4',
        })
            .on('progress', (_, totalDownloaded, total) => {
                console.log('totalDownloaded: ' + totalDownloaded);
                if (!allReceived) {
                    console.log('total: ' + total);
                    progressBar.start(total, 0, {
                        mbTotal: (total / 1024 / 1024).toFixed(2),
                        mbValue: 0,
                    });
                    allReceived = true;
                }
                progressBar.increment();
                progressBar.update(totalDownloaded, {
                    mbValue: (totalDownloaded / 1024 / 1024).toFixed(2),
                });
            })
            .on('end', () => {
                progressBar.stop();
                logger.info('Successfully downloaded the stream!');
                resolve(stream);
            });
    });
};


  


  But now it is like this :

  


  ➜ node youtube.js
info:    Getting metadata for https://www.youtube.com/watch?v=Np8ibIagn3M
info:    Title: Tu boca -  (Bachata Remix Dj Khalid)
here 1
info:    Downloading from https://www.youtube.com/watch?v=Np8ibIagn3M ...
[Progress] [██████░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░] 14% | Downloaded: 1.02/7.15 MB | Elapsed Time: 52s


  


  Added console.log :

  


  totalDownloaded: 16384
total: 7493903
[Progress] [░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░] 0% | Downloaded: 0/7.15 MB | Elapsed Time: 0stotalDownloaded: 32768
totalDownloaded: 49152
totalDownloaded: 65536
totalDownloaded: 81920
totalDownloaded: 98304
totalDownloaded: 114688
totalDownloaded: 131072
totalDownloaded: 147456
totalDownloaded: 163840
totalDownloaded: 180224
totalDownloaded: 196608
totalDownloaded: 212992
totalDownloaded: 229376
totalDownloaded: 245760
totalDownloaded: 262144
totalDownloaded: 278528
totalDownloaded: 294912
totalDownloaded: 311296
totalDownloaded: 327680
totalDownloaded: 344064
totalDownloaded: 360448
totalDownloaded: 376832
totalDownloaded: 393216
totalDownloaded: 409600
totalDownloaded: 425984
totalDownloaded: 442368
totalDownloaded: 458752
totalDownloaded: 475136
totalDownloaded: 491520
totalDownloaded: 507904
totalDownloaded: 524288
totalDownloaded: 540672
totalDownloaded: 557056
totalDownloaded: 573440
totalDownloaded: 589824
totalDownloaded: 606208
totalDownloaded: 622592
totalDownloaded: 638976
totalDownloaded: 655360
totalDownloaded: 671744
totalDownloaded: 688128
totalDownloaded: 704512
totalDownloaded: 720896
totalDownloaded: 737280
totalDownloaded: 753664
totalDownloaded: 770048
totalDownloaded: 786432
totalDownloaded: 802816
totalDownloaded: 819200
totalDownloaded: 835584
totalDownloaded: 851968
totalDownloaded: 868352
totalDownloaded: 884736
totalDownloaded: 901120
totalDownloaded: 917504
totalDownloaded: 933888
totalDownloaded: 950272
totalDownloaded: 966656
totalDownloaded: 983040
totalDownloaded: 999424
totalDownloaded: 1015808
totalDownloaded: 1032192
totalDownloaded: 1048576
totalDownloaded: 1064960
[Progress] [██████░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░] 14% | Downloaded: 1.02/7.15 MB | Elapsed Time: 25s


  


• Merge commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’

  5 mai 2013, par Michael Niedermayer

  Merge commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’
  * commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’ :
  
    avcodec : Add av_cold attributes to init functions missing them
  Conflicts :
  
  	libavcodec/aacpsy.c
  
  	libavcodec/atrac3.c
  
  	libavcodec/dvdsubdec.c
  
  	libavcodec/ffv1.c
  
  	libavcodec/ffv1enc.c
  
  	libavcodec/h261enc.c
  
  	libavcodec/h264_parser.c
  
  	libavcodec/h264dsp.c
  
  	libavcodec/h264pred.c
  
  	libavcodec/libschroedingerenc.c
  
  	libavcodec/libxvid_rc.c
  
  	libavcodec/mpeg12.c
  
  	libavcodec/mpeg12enc.c
  
  	libavcodec/proresdsp.c
  
  	libavcodec/rangecoder.c
  
  	libavcodec/videodsp.c
  
  	libavcodec/x86/proresdsp_init.c
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/aacpsy.c
  • [DH] libavcodec/ac3enc.c
  • [DH] libavcodec/atrac3.c
  • [DH] libavcodec/audio_frame_queue.c
  • [DH] libavcodec/avfft.c
  • [DH] libavcodec/bgmc.c
  • [DH] libavcodec/bink.c
  • [DH] libavcodec/binkdsp.c
  • [DH] libavcodec/dcadsp.c
  • [DH] libavcodec/dnxhdenc.c
  • [DH] libavcodec/dsputil.c
  • [DH] libavcodec/dvdsubdec.c
  • [DH] libavcodec/eac3enc.c
  • [DH] libavcodec/ffv1.c
  • [DH] libavcodec/ffv1enc.c
  • [DH] libavcodec/flac_parser.c
  • [DH] libavcodec/h261enc.c
  • [DH] libavcodec/h264_parser.c
  • [DH] libavcodec/h264chroma.c
  • [DH] libavcodec/h264dsp.c
  • [DH] libavcodec/h264pred.c
  • [DH] libavcodec/h264qpel.c
  • [DH] libavcodec/iirfilter.c
  • [DH] libavcodec/ituh263dec.c
  • [DH] libavcodec/ituh263enc.c
  • [DH] libavcodec/ivi_common.c
  • [DH] libavcodec/libschroedinger.c
  • [DH] libavcodec/libschroedingerenc.c
  • [DH] libavcodec/libxvid_rc.c
  • [DH] libavcodec/mlpdsp.c
  • [DH] libavcodec/mpc.c
  • [DH] libavcodec/mpeg12.c
  • [DH] libavcodec/mpeg12enc.c
  • [DH] libavcodec/mpeg4videoenc.c
  • [DH] libavcodec/mpegaudiodec.c
  • [DH] libavcodec/mpegaudiodsp.c
  • [DH] libavcodec/mpegaudiodsp_template.c
  • [DH] libavcodec/mpegvideo.c
  • [DH] libavcodec/msmpeg4enc.c
  • [DH] libavcodec/pngdsp.c
  • [DH] libavcodec/proresdsp.c
  • [DH] libavcodec/ralf.c
  • [DH] libavcodec/rangecoder.c
  • [DH] libavcodec/ratecontrol.c
  • [DH] libavcodec/roqvideoenc.c
  • [DH] libavcodec/sipr16k.c
  • [DH] libavcodec/utils.c
  • [DH] libavcodec/vc1.c
  • [DH] libavcodec/vc1_parser.c
  • [DH] libavcodec/videodsp.c
  • [DH] libavcodec/vorbisdsp.c
  • [DH] libavcodec/vp56dsp.c
  • [DH] libavcodec/wma.c
  • [DH] libavcodec/wmadec.c
  • [DH] libavcodec/wmaenc.c
  • [DH] libavcodec/x86/h264chroma_init.c
  • [DH] libavcodec/x86/proresdsp_init.c