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• How to add chapters to ogg file ?

  22 février 2021, par MayurK

  I am trying to add chapters to a ogg file containing vorbis audio.

  



  From this link I copied the following ffmpeg command.

  



  ffmpeg -threads auto -y -i in.ogg -i metadata_OGG.txt -map_metadata 1 -codec copy out_METADATA.ogg


  



  My metadata_OGG.txt file is as given below.

  



  CHAPTER00=00:00:00.000
CHAPTER00NAME=Chapter 01
CHAPTER01=00:00:05.000
CHAPTER01NAME=Chapter 02
CHAPTER02=00:00:10.000
CHAPTER02NAME=Chapter 03


  



  I am getting the following error.

  



  [ogg @ 00000000006d6900] Unsupported codec id in stream 0
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument


  



  But if i change -codec copy to -acodec copy there is no error in ffmpeg but the text file is converted to video. i.e. the output file will have a static video frame with the text of metadata_OGG.txt in it. Also, I observe the following log message during conversion.

  



    Stream #1:0 -> #0:0 (ansi (native) -> theora (libtheora))
  Stream #0:0 -> #0:1 (copy)


  



  Anybody please tell me what is going wrong here ?

  



  Also, I would like to know what is the right way to add chapters to ogg. I searched for some tools also. I did not get any.

  


• Discard data stream from container using ffmpeg

  10 décembre 2020, par A.Be

  I am trying to get rid of a data (subtitle) stream within a Mp4 container, using ffmpeg.

  



  Here's the screenshot from ffprobe :

  



  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.m4v':
Metadata:
major_brand     : isom
minor_version   : 2
compatible_brands: isomiso2avc1mp41
creation_time   : 2018-01-19T15:10:48.000000Z
Duration: 00:00:42.17, start: 0.000000, bitrate: 6260 kb/s
Chapter #0:0: start 0.000000, end 42.166000
Metadata:
  title           : Chapter 1
Stream #0:0(eng): Data: bin_data (text / 0x74786574), 0 kb/s (default)
Metadata:
  creation_time   : 2018-01-19T15:10:48.000000Z
  handler_name    : Apple Alias Data Handler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, 
fltp, 317 kb/s (default)
Metadata:
  creation_time   : 2018-01-19T15:10:48.000000Z
  handler_name    : AAC audio
Stream #0:2(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 
1920x1080, 5926 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc (default)
Metadata:
  creation_time   : 2018-01-19T15:10:48.000000Z
  handler_name    : H264 video
 **Unsupported codec with id 100359 for input stream 0**


  



  I tried :

  



   ffmpeg -i test.m4v -acodec copy -vcodec copy -sn nodata.mp4


  



  Data track still there, just moved from stream 0 to stream 2

  



  I tried also :

  



   ffmpeg -i test.m4v -acodec copy -vcodec copy -map 0:1 -map 0:2 no2.mp4


  



  Same result, track still there, just jumped to stream 0:2 no luck.

  



  Any hint ?
Thanks in advance

  


• How to obtain titles and chapters information in DVD ?

  14 décembre 2022, par Tarhan

  I found many question about creating DVD menu using ffmpeg but i did not find any one about programmically access to DVD structure information. When i using libav (or FFmpeg) library i can open DVD image (iso file) and access to video, audio and subtitle streams. But i could not find any API.

  



  I can play video and found information using VLC player (and so libvlc library). But I need to do some processing on audio and subtitle stream programmically. I don't want to split VOBs using tools like SmartRipper, and only then do processing.

  



  Does libav(ffmpeg) contain any API for dealing with DVD menus ? If not can you recommend any other library which can be used to obtain information about title(chapter) start and end time with one frame(sample, AVPacket) accuracy ?

  



  I heard about libdvdnav library but i don't know if it right for me.
I'm new to libav and DVD format internals.