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• ffmpeg : Missing subtitles on iPod

  7 septembre 2016, par forthrin

  I generating a playable video on a 3rd generation iPod Nano using the following command line, but I’m having certain challenges related to subtitles, stability and metadata.

  ffmpeg -y -i in.mkv -i in.srt -profile:v baseline -level 3 -refs 6 -ar 44100 -ac 2 -ab 128k
  
  -vf "scale=640:-1,pad=iw:480:0:(oh-ih)/2" -map 0:0 -map 0:1 -map 1:0 -map_metadata -1
  
  -movflags +faststart -scodec mov_text -metadata:s:s:0 language=eng out.mp4

  1. Subtitles won’t show. I tried both iPod settings "Subtitles On" and "Captions On". iPod software is latest 1.1.3. Subtitles show with OS X QuickTime after I change from "Auto" to "English" in the subtitle menu. Is there an ffmpeg flag to make subtitles display on the iPod ?

  2. The video player exits after 11-12 minutes for many of the converted videos. Restricting the bitrate -b:v 600k -bufsize 600k did not help. Any advice how to circumvent this ?

  3. Lastly, how can I make the video show under the "TV show" menu on the iPod ? Couldn’t find any help searching for "ffmpeg metadata tv". Or is this an internal iTunes feature ?

• How to disable slf4j log in java

  12 février, par Model123123

  Sorry for my poor English.

  


  I'm using ffmpeg-cli-wrapper library in java

  


  [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\ffprobe.exe -version

  


  [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\ffprobe.exe -v quiet -print_format json -show_error -show_format -show_streams -show_chapters

  


  How to remove this log ?

  


  try this :

  


  


  1. java.util.logging.Logger.getLogger("net.bramp.ffmpeg").setLevel(Level.OFF) ;

     


  


  2. /logger name="net.bramp.ffmpeg" level="OFF"/ in logback.xml

     


  


  


  but not work...

  


  RunProcessFunction src :
https://github.com/bramp/ffmpeg-cli-wrapper/blob/master/src/main/java/net/bramp/ffmpeg/RunProcessFunction.java

  


• Can't generate libx264.dll

  20 avril 2015, par Sandie C

  It’s my first post in a forum ever (and in english...) Any suggestion is welcomed.

  So let’s started !

  My global goal is to recorder/transcoding and dispay an IP Camera stream from a .bat whitch calling vlc.

  I want an asf container containing h264 and aac.

  ---

  .bat :

  cd C :\Program Files (x86)\VideoLAN\VLC

  vlc rtsp ://root:root@ip_adresse/media.amp —sout "#transcode vcodec=x264, vb=112 , acodec==aac, fps=25:duplicatedst=display,dst=standardaccess=file,mux = asf,dst=flux.asf" -v

  ---

  when i first execute this, VLC told me that H264 encoder was not found, so i decided to compile x264.

  I followed this link

  http://www.ayobamiadewole.com/Blog/How-to-build-x264-or-libx264.dll-in-Windows

  I success to make the .exe but and when I got to

  ./configure —disable-cli —enable-shared —extra-ldflags=-Wl,—output-def=libx264.def

  minGW shell indicates : not working c compiler found

  I tried to find some answer, but i didn’t found a good one.

  Does anyone have an idea of what i’m doing wrong ?