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• PGS subtitle track is out of sync after extracting then adding to another video file

  23 décembre 2022, par Diericx

  I have the Japanese and English version of a show. I am attempting to extract the subtitles and audio from the English version and add them to the Japanese version.

  


  The video in both files seems to be exactly the same.

  


  Here is the info for the streams contained in the english file. When playing this source video file Track 2 subtitles seem to be almost empty while Track 1 contains all of them forced.

  


  Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, stereo, s32p (24 bit) (default)
    Metadata:
      title           : Stereo
      BPS-eng         : 1572054
      DURATION-eng    : 00:29:08.789333333
      NUMBER_OF_FRAMES-eng: 163949
      NUMBER_OF_BYTES-eng: 343648948
      SOURCE_ID-eng   : 001100
      _STATISTICS_WRITING_APP-eng: MakeMKV v1.17.2 darwin(arm64-release)
      _STATISTICS_WRITING_DATE_UTC-eng: 2022-12-18 02:20:00
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
  Stream #0:2(eng): Audio: dts (DTS), 48000 Hz, stereo, fltp, 1536 kb/s
    Metadata:
      title           : Stereo
      BPS-eng         : 1509000
      DURATION-eng    : 00:29:08.789333333
      NUMBER_OF_FRAMES-eng: 163949
      NUMBER_OF_BYTES-eng: 329865388
      SOURCE_ID-eng   : 001100
      _STATISTICS_WRITING_APP-eng: MakeMKV v1.17.2 darwin(arm64-release)
      _STATISTICS_WRITING_DATE_UTC-eng: 2022-12-18 02:20:00
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
  Stream #0:3(eng): Subtitle: hdmv_pgs_subtitle
    Metadata:
      BPS-eng         : 22140
      DURATION-eng    : 00:28:47.454895833
      NUMBER_OF_FRAMES-eng: 836
      NUMBER_OF_BYTES-eng: 4780741
      SOURCE_ID-eng   : 001200
      _STATISTICS_WRITING_APP-eng: MakeMKV v1.17.2 darwin(arm64-release)
      _STATISTICS_WRITING_DATE_UTC-eng: 2022-12-18 02:20:00
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
  Stream #0:4(eng): Subtitle: hdmv_pgs_subtitle
    Metadata:
      BPS-eng         : 1770
      DURATION-eng    : 00:28:39.655437500
      NUMBER_OF_FRAMES-eng: 62
      NUMBER_OF_BYTES-eng: 380532
      SOURCE_ID-eng   : 001201
      _STATISTICS_WRITING_APP-eng: MakeMKV v1.17.2 darwin(arm64-release)
      _STATISTICS_WRITING_DATE_UTC-eng: 2022-12-18 02:20:00
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID


  


  I extract the english audio

  


  ffmpeg -i s01e01_ja.mkv \
-muxdelay 0 \
-map 0:1 \
-vn \
-acodec copy \
s01e01_en_audio.dts


  


  I extract the english subtitles

  


  ffmpeg -i s01e01_en.mkv \
-muxdelay 0 \
-map 0:3 \
-vn \
-c copy \
s01e01_en_sub.sup


  


  I add the english audio track to the japanese video

  


  ffmpeg -i s01e01_ja.mkv \
-i s01e01_en_audio.dts \
-muxdelay 0 \
-map 0 \
-map 1:a \
-c copy \
-shortest \
s01e01_en_ja.mkv


  


  And finally add the english subtitles to the new japanese video that contains english audio

  


  ffmpeg -i s01e01_en_ja.mkv \
-itsoffset 6 \
-i future_boy_conan_s01e01_en_sub.sup \
-muxdelay 0 \
-map 0 \
-map 1:s \
-c copy \
-shortest \
s01e01_en_ja_subs.mkv


  


  As you can see I need to offset the subtitles by 6 seconds in order to get the subtitles to sync with the audio. The english audio is in sync with the video.

  


  I do not know how to debug this in order to tell if the subtitles are extracted or injected incorrectly causing the time offset. Any help would be appreciated !

  


• FFMPEG S3 AWS Laravel Unable to check existence

  18 avril 2023, par Moomen Aldahdouh

  the error in logs laravel file
[2023-04-18 14:11:22] production.ERROR : Unable to check existence for : videos/643ea50862566/643ea50862566_0_300_%05d.ts "exception" :"[object] (League\Flysystem\UnableToCheckFileExistence(code : 0) : Unable to check existence for : videos/643ea50862566/643ea50862566_0_300_%05d.ts at C :\inetpub\mysite\vendor\league\flysystem\src\UnableToCheckExistence.php:19)
[stacktrace]

  


  I'm trying to upload a video on S3 service using Laravel FFMPEG and convert the video to multi-resolution after adding Frames, the error appears on the server, but on localhost not appear, and working very well locally.

  


  `FFMpeg::fromDisk('s3')//uploads
    ->open($this->data["storage_path_full"])
        ->exportForHLS()
        ->addFormat($lowBitrate, function ($media) {
            $media->addFilter('scale=256:144'); 
        })
        ->addFormat($superLowBitrate, function ($media) {
            $media->addFilter('scale=426:240'); 
        })
        ->addFormat($midBitrate, function ($media) {
            $media->addFilter('scale=480:360'); 
        })
        ->addFormat($superMidBitrate, function ($media) {
            $media->addFilter('scale=640:480'); 
        })
        ->addFormat($highBitrate, function ($media) {
            $media->addFilter('scale=1280:720'); 
        })
        ->addFormat($superHighBitrate, function ($media) {
            $media->addFilter('scale=1920:1080'); 
        })
        ->toDisk('s3')
        ->save($this->data["storage_path_video"]);`


  


• Anomalie #4123 : Porte Plume : focus gênant dans certains cas

  4 avril 2018, par Mathieu L

  Ca fonctionne en effet avec FF.

  Le bug est présent avec Chrome et Safari.
  J’utilise SPIP 3.2.1 mais j’ai eu ce comportement depuis très longtemps sans avoir jamais pu le rendre reproductible, jusqu’à aujourd’hui.

  Exemple : https://media.giphy.com/media/3BMAtSczdIV2uhQq0B/giphy.gif