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• call avio_open function with non-english filename is invalid

  3 juillet 2013, par Faller

  i have been writing unicode based program with libav and i wanna make some file through libav with filename "中.mp4".

  this filename is not english, and when i call, function return positive integer(not fail).

  but there is "ѱ۰.mp4" instead of "中.mp4". (invalid file name.)

  what's the matter ?

  char * szFilenameA = 0;
  
  
  
  #ifdef _UNICODE
  
      CSHArray<char> aFilenameBuffer;
  
      aFilenameBuffer.Alloc(lstrlen(szFileName) * 2);
  
      ZeroMemory(aFilenameBuffer, aFilenameBuffer.GetSize());
  
      WideCharToMultiByte(CP_ACP, 0, szFileName, lstrlen(szFileName), aFilenameBuffer, aFilenameBuffer.GetSize(), NULL, NULL);
  
      szFilenameA = aFilenameBuffer;
  
  #else
  
      szFilenameA = (TCHAR *)szFileName;
  
  #endif
  
  
  
      ZeroMemory(m_pOutputFormatCtx->filename,1024);
  
      _snprintf(m_pOutputFormatCtx->filename, strlen(szFilenameA), "%s", szFilenameA);
  
  
  
      avio_open(&amp;m_pOutputFormatCtx->pb, szFilenameA, AVIO_FLAG_WRITE)
  
  </char>

• avdevice/caca : remove space before ’ :’ (English typo, cosmetics)

  11 septembre 2015, par Clément Bœsch

  avdevice/caca : remove space before ’ :’ (English typo, cosmetics)
  

  • [DH] libavdevice/caca.c

• Ffmpeg and ffprobe not showing subtitles stream in m3u8 file

  3 juin 2021, par DanielVip3

  I'm trying to get an mp4 video from a m3u8 playlist file (in simple HLS), with audio, video and subtitles.

  


  I've managed to extract the video and audio stream because they are relatively easy : the input m3u8, according to ffprobe, contains 3 different programs, and the third program (called Program 2) is the one I need, because it contains both the highest quality video and the English highest quality audio.

  


  So, what I really am doing is

  


  ffmpeg -i "blahblah.m3u8" -c copy -map 0:p:2:v:0 -map 0:p:2:a:m:language:eng -map 0:s:0 "output.mp4"


  


  Which means : select the first video stream for the third (index 2) program and the English language audio stream from the same third (index 2) program.

  


  My problem is : I can't seem to find the two subtitles streams.
The m3u8 has two subtitles : English and Spanish, as you can see in the m3u8 itself

  


  #EXTM3U
# Created with Bento4 mp4-hls.py version 1.2.0r637

#EXT-X-VERSION:4

# Subtitles
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitles",NAME="English",LANGUAGE="en",URI="subtitles/en/subtitles.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitles",NAME="Español",LANGUAGE="es",URI="subtitles/es/subtitles.m3u8"

# Audio
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio_aac",NAME="Français",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=YES,URI="audio/aac/fra/stream.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio_aac",NAME="English",LANGUAGE="eng",AUTOSELECT=YES,URI="audio/aac/eng/stream.m3u8"

# Media Playlists
#EXT-X-STREAM-INF:AVERAGE-BANDWIDTH=2198120,BANDWIDTH=2416640,CODECS="avc1.4D401F,mp4a.40.2",RESOLUTION=1280x720,AUDIO="audio_aac",SUBTITLES="subtitles"
media-1/stream.m3u8
#EXT-X-STREAM-INF:AVERAGE-BANDWIDTH=1001663,BANDWIDTH=1102896,CODECS="avc1.42C01E,mp4a.40.2",RESOLUTION=640x360,AUDIO="audio_aac",SUBTITLES="subtitles"
media-2/stream.m3u8
#EXT-X-STREAM-INF:AVERAGE-BANDWIDTH=4007581,BANDWIDTH=4391894,CODECS="avc1.4D4029,mp4a.40.2",RESOLUTION=1920x1080,AUDIO="audio_aac",SUBTITLES="subtitles"
media-3/stream.m3u8


  


  I thought it was easy : I added a -map 0:s:0 to get the first subtitles, but ffmpeg told me that there's no stream named like that.

  


  Then I ran ffprobe, which tells me there are no subtitles streams for him :

  


  ffprobe "blahblah.m3u8" -show_streams -select_streams s


  


  You can find here all the streams which the ffprobe command shows. There are lots of video and audio streams, but there are no subtitles streams.

  


  Why don't ffmpeg and ffprobe find the subtitles streams ? Is it because they are split in a different m3u8 playlist file ?