Recherche avancée

Sur d’autres sites (9748)

• Android ffmpeg - 3gp to mp4(or avi) videos - not playing

  18 juillet 2013, par santhosh

  I am doing an android application which is used to merge two videos and after merge completed play the result video. For this I am using ffmpeg.

  When I record two mpeg or mp4 videos, the result merged video playing fine. Now I record the videos as 3gp and convert it into mp4(or avi) and merged it. Then the result video is not playing.

  Can anybody help me What may be the problem ?

  I am using the following code :

  String args[] = {"ffmpeg","-i",""+filename[i]+"",
  
                              "-qscale","1",
  
                              ""+Environment.getExternalStorageDirectory().getPath()+"/Movies/i"+(i + 1)+".mp4(or avi)"};

  To merge the videos :

  String args[] = {"ffmpeg","-i","concat:"+concatPath.toString()+"",
  
                                "-vcodec", "copy" ,
  
                                "-acodec" ,"copy",
  
                                "-vbsf", "aac_adtstoasc",
  
                                ""+Environment.getExternalStorageDirectory().getPath()+"/Movies/3.mp4"};

• avformat/hlsenc : save the EXT-X-DISCONTINUITY from old list

  7 décembre 2016, par Steven Liu

  avformat/hlsenc : save the EXT-X-DISCONTINUITY from old list
  when use fix ticket 2nd problem.
  command line test step :
  
  rm -rf output* ;./ffmpeg  -i /Movies/objectC/facebook.mp4 -an -c:v copy
  
   f hls -hls_time 4 -hls_list_size 5 -hls_flags +delete_segments
  
   hls_flags +append_list -hls_flags +omit_endlist -hls_flags
  
  +discont_start -t 50 output.m3u8
  
  ./ffmpeg -i /Movies/objectC/facebook.mp4 -an -c:v libx264 -g 4 -f hls
  
   hls_time 4 -hls_list_size 5 -hls_flags +delete_segments -hls_flags
  
  +append_list -hls_flags +omit_endlist -hls_flags +discont_start -t 5
  
  output.m3u8
  
  ./ffmpeg -i /Movies/objectC/facebook.mp4 -an -c:v libx264 -g 4 -f hls
  
   hls_time 4 -hls_list_size 5 -hls_flags +delete_segments -hls_flags
  
  +append_list -hls_flags +omit_endlist -hls_flags +discont_start -t 5
  
  output.m3u8
  result :
  
   #EXTM3U
  
   #EXT-X-VERSION:3
  
   #EXT-X-TARGETDURATION:5
  
   #EXT-X-MEDIA-SEQUENCE:6
  
   #EXTINF:4.120000,
  
   output6.ts
  
   #EXT-X-DISCONTINUITY
  
   #EXTINF:4.000000,
  
   output7.ts
  
   #EXTINF:0.960000,
  
   output8.ts
  
   #EXT-X-DISCONTINUITY
  
   #EXTINF:4.000000,
  
   output9.ts
  
   #EXTINF:0.960000,
  
   output10.ts
  Signed-off-by : Steven Liu <lq@chinaffmpeg.org>
  

  • [DH] libavformat/hlsenc.c

• Encode to h265 with ffmpeg in batch

  20 septembre 2022, par Ricardo

  I have several Movies/Animes in Full HD and encoded in h264 (current market standard), and I need to perform the Encode to h265 of all these files (separated by folder and subfolders) to save space, which is the proper way to execute in batch (.bat file) ; below current code :

  


  for %%f in (*.mkv, *.mp4) do (
    ffmpeg -i "%%a" -c:a copy -c:v libx265 -vtag hvc1 lossless=1 -preset veryslow "Out\%%~na.mkv"
)


  


  In order to have the best compression of the final file and better image quality (which is visually identical to the current h264 file)

  


  Obs1 : I have both animations and movies and series with real people, can the "ffmpeg" configuration be different for each type ?

  


  Obs2 : In most files have multiple audio and video tracks and multiple subtitles, it is necessary that all audio, video and subtitles remain in the final files.