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• FFMPEG Webvtt m3u8 download into single vtt file, ignore the "X-TIMESTAMP-MAP=MPEGTS=" (timestamp sync problem)

  5 janvier 2021, par Panda Xia

  I want to download the subtitle of a video, it has separated m3u8 file for subtitle :

  


  webvtt source in m3u8 format : https://sdn-global-streaming-cache.3qsdn.com/9378/files/19/05/1199332/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes.ism/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000.m3u8

  


  looks like :

  


  #EXTM3U
#EXT-X-VERSION:4
## Created with Unified Streaming Platform(version=1.9.5)
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-MEDIA-SEQUENCE:1
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-TARGETDURATION:989
#USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z
#EXTINF:24.72, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-1.webvtt
#EXTINF:2.56, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-13.webvtt
#EXTINF:50.88, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-14.webvtt
#EXTINF:3.079, no desc
Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000-40.webvtt
#EXTINF:60.401, no desc
....


  


  Then use the command to download the multiple webvtts into one vtt file "EN.vtt" :

  


  ffmpeg -i  "https://sdn-global-streaming-cache.3qsdn.com/9378/files/19/05/1199332/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes.ism/Dqt6jZBkvX2nLyY4CGhxmpK89PbQRFV7-drm-aes-textstream_deu=1000.m3u8"  "DE.vtt"


  


  In output "DE.vtt" the X-TIMESTAMP-MAP=MPEGTS:xxxxxx,LOCAL:00:00:00.000 from each webvtt file (webvtt in m3u8) are ignored.

  


  so that the time Synchronisation is broken, the start time of each Segment always begins from 00:00:00, looks like :

  


  WEBVTT

00:00.000 --> 00:02.560
So viel Macht.

00:00.000 --> 00:03.079
Was er sagte.

00:00.000 --> 00:04.680
oder
die Schönheit

00:00.000 --> 00:01.440
Er sagte immer:

00:00.000 --> 00:03.840
Auf seinen Klang 

00:00.000 --> 00:07.519
Seine Paranoia.


  


  Could ffmpeg support the relative time stamp to convert into absolute time stamp ?
Or use other method to download perfect webvvt file ?

  


• download part youtube video with ffmpeg ?

  1er août 2020, par testoflow

  I can't get this right
  
ffmpeg works well so can you help me ?

  


  #I can't get this right

  


  #!/bin/bash
var=$(xclip -o)

if [ -z $var ]; then  
    echo 'copia url a descargar al portapapeles'  
fi  

printf "(1) download part of video without audio\n"
printf "(2) download part of audio\n"
echo
echo -n 'opcion: '
read opcion
case $opcion in
    "1") c=$(youtube-dl -g $var | awk '{ if(NR==1) print $0 }' | sed 's/^/"/;s/$/"/')  && echo -n 'start time: ' && read segundos && echo -n 'duration: ' && read duration &&  ffmpeg -i $c -ss $segundos -t $duration probe.mp4;;  
    "2") b=$(youtube-dl -g $var | awk '{ if(NR==2) print $0 }' | sed 's/^/"/;s/$/"/')  && echo $b && ffmpeg -ss 0 -i $b  -t 10 probe.mp3;;  
esac  


  


• Why this function not working, i am try to add watermark in Video for download [closed]

  13 août 2020, par Ajay Kumar

  I am trying to download Video with watermark but this function not working why

  


  SHOW massege error. Video file exist in temp folder with watermark but not download

  


  Failed to download Video if this function enabled and if disabled Video are download successful

  


  function waterMark($videoURL,$username)
{


    require 'video_editor/vendor/autoload.php';

    $ffmpeg = FFMpeg\FFMpeg::create(array(
        'ffmpeg.binaries'  => ffmpeg_lib,
        'ffprobe.binaries' => ffprobe_lib,
        'timeout'          => 8600, // The timeout for the underlying process
        'ffmpeg.threads'   => 42,   // The number of threads that FFMpeg should use
    ), null);
    $ffmpeg_string = ffprobe_lib;


    $tempFile=rand().time();
    $outputFile='tmp/'.$tempFile.'.mp4';

    $video = $ffmpeg->open($videoURL);

    $watermarkPath = watermark_Path;
    $video
        ->filters()
        ->watermark($watermarkPath, array(
            'position' => 'absolute',
            'x' => 15,
            'y' => 30,
        ));
    $text="@".$username;
    $command = "text='$text': fontcolor=white:fontfile=OpenSans-Bold.ttf: fontsize=18: x=20: y=70:";
    $format = new FFMpeg\Format\Video\X264();
    $format->setAudioCodec("aac");

    try
    {

            $video->filters()->custom("drawtext=$command");
            $video->save($format, $outputFile);

            $array_out = array();
            $array_out[] =
            array(
                "download_url" => checkVideoUrl($outputFile)
            );

            $output=array( "code" => "200", "msg" => $array_out);
            print_r(json_encode($output, true));

    }
    catch(Exception $e)
    {
            echo $e->getMessage();
            die;
    }


}


  


  Please solve this isu

  


  Why this function not working, i am try to add watermark in Video for download