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• Is it real connect subtitles when streaming video (HLS, M3U8)

  12 avril 2019, par Mikhail Petrov

  I am trying to create a stream in which the tracks from the convertible file (in my case .mkv to .m3u8) will be played through m3u8. At the moment, it turns out to switch between multiple resolutions, and even select the audio track, but does not see the subtitles at all.

  Video works, audio tracks are switched, but no subtitles are visible at all

  ffprobe source file :
  https://paste2.org/czUePDPj

  Next, perform coding and splitting into tracks :

  ffmpeg -i '/home/mishkapetran/Загрузки/Rick.mkv' \
  
  -map 0:v:0 -c:v libx264 -profile:v baseline -preset:v superfast -strict -2 -s 426x240   -f hls -hls_time 10 -hls_list_size 0 -segment_list rick240p -hls_segment_filename '/home/mishkapetran/Загрузки/test/Rick240p_%d.ts'      '/home/mishkapetran/Загрузки/test/Rick240p.m3u8' \
  
  -map 0:a:0 -c:a aac                             -f hls -hls_time 10 -hls_list_size 0 -segment_list rick_ru -hls_segment_filename '/home/mishkapetran/Загрузки/test/RickTrack_ru_%d.aac'        '/home/mishkapetran/Загрузки/test/RickTrack_ru.m3u8' \
  
  -map 0:a:1 -c:a aac                             -f hls -hls_time 10 -hls_list_size 0 -segment_list rick_en -hls_segment_filename '/home/mishkapetran/Загрузки/test/RickTrack_en_%d.aac'        '/home/mishkapetran/Загрузки/test/RickTrack_en.m3u8' \
  
  -map 0:s:0 suben.vtt                          -f hls -hls_time 10 -hls_list_size 0 -segment_list en -hls_segment_filename '/home/mishkapetran/Загрузки/test/sub_en_%d.vtt'  '/home/mishkapetran/Загрузки/test/sub_en.m3u8' \
  
  -map 0:s:1 subru.vtt                          -f hls -hls_time 10 -hls_list_size 0 -segment_list ru -hls_segment_filename '/home/mishkapetran/Загрузки/test/sub_ru_%d.vtt'  '/home/mishkapetran/Загрузки/test/sub_ru.m3u8'

  Then in the same folder I create the m3u8 master :

  #EXTM3U
  
  #EXT-X-VERSION:5
  
  #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="Russian",LANGUAGE="ru",AUTOSELECT=YES,URI="RickTrack_ru.m3u8"
  
  #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="English",LANGUAGE="en",AUTOSELECT=NO,URI="RickTrack_en.m3u8"
  
  
  
  #EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="Russian",DEFAULT=YES,FORCED=NO,AUTOSELECT=YES,LANGUAGE="ru",URI="sub_ru.m3u8"
  
  #EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="English",DEFAULT=NO,FORCED=NO,AUTOSELECT=YES,LANGUAGE="en",URI="sub_en.m3u8"
  
  
  
  #EXT-X-STREAM-INF:BANDWIDTH=928000,CODECS="avc1.42c00d,mp4a.40.2",RESOLUTION=480x270,AUDIO="audio",SUBTITLES="subs"
  
  Rick240p.m3u8

• ffmpeg mp4 encode 'no frame !' error

  20 avril 2012, par Lee Jacobson

  I'm using the following command to convert video to MP4 :

  /usr/bin/ffmpeg -i /home/myvideo.mp4 -sameq /home/vconverted.mp4

  Problem is I'm getting an error :

  [h264 @ 0x167335c0]no frame!
  
  Error while decoding stream 

  Is there any extra parameters I should be using to stop these errors

  Thanks !

• FFMpeg is not working to generate thumbnail but it converts mp4 to mp3

  30 novembre 2019, par user3090994

  I have installed ffmpeg and path is correct, because when i go to convert mp4 video to mp3, it works. here is its code.

  shell_exec('/home/pakunit/ffmpeg/ffmpeg -i newfile.mp4 output4.mp3');

  even this code is also works for cut a video from mp4 to mp4 using this code

  shell_exec("/home/pakunit/ffmpeg/ffmpeg -i newfile.mp4 -ss 00:00:00 -t 00:00:10 -async 1 -c copy cut.mp4");

  and when I use mostly other commands, no command works, Like i want to create video thumbnail and i am using this code.

  shell_exec("/home/pakunit/ffmpeg/ffmpeg -i newfile.mp4 -an -ss 5 -s 120x90 thumbnail.jpg")

  but its not working. also i tried many codes and command for creating thumbnail, but not working any of them. even i used the exact same command that is on ffmpeg.org original website

  shell_exec("/home/pakunit/ffmpeg/ffmpeg -i newfile.mp4 -vf thumbnail,scale=300:200 -frames:v 1 out.png");

  Is any extension missed in hosting ? or any special extension or module we need to enable from hosting ? there is also ffmpeg enabled in PHP extension, but not showing in phpinfo() ; Please help. thanks