ks-tools/doc/ks-mp4k.md

ks-mp4k - Convert video file to compact and efficient MP4 (4K).

Syntax:

$ ks-mp4k </absolute/path/video.mkv> </path/prefix_name>

Default configuration:

• The script ks-mp4k use by default the following configuration:

  - Resolution: 3840x2160
  - Video codec: libx264
  - Bitrate video: 6000k
  - Preset: medium
  - Audio codec: aac (stereo)
  - Bitrate audio: 320k
  - Default Audio: spa
  - Default Subtitle: spa (forced)
  - Container: mp4
  

• If you want to change the settings, you need to edit the ~/.ks-tools/ks-mp4k file and change the following variables:

  rel_size="3840x2160"
  vcodec="libx264"
  b_vcodec="6000k"
  v_preset="medium"
  acodec="aac"
  b_acodec="320k"
  default_lang_audio="spa"
  default_lang_subt="spa"
  v_ext="mp4"
  

• RECOMMENDED: You can use the ks-conf tool to edit the configuration.

Example of use:

• An example of use would be the following:

  $ ks-mp4k /data/movies/Example.mkv /data/converted/Example
  

• Executing the command, the file will be analyzed and a wizard will be shown to select the tracks, choose the settings and define the metadata:

  * Information of Example.mkv:
  
  + Video Tracks:
  Stream #0:0: Video: h264 (High)
  
  + Audio Tracks:
  Stream #0:1(spa): Audio: ac3
  Stream #0:2(eng): Audio: ac3
  
  + Subtitle Tracks:
  Stream #0:3(spa): Subtitle: subrip (default) (forced)
  Stream #0:4(spa): Subtitle: hdmv_pgs_subtitle
  Stream #0:5(spa): Subtitle: subrip (forced)
  Stream #0:6(eng): Subtitle: subrip
  
  * (Default: 0:0) Type the number of video track: 
  * (Default: 0:1) Type the number of audio track: 
  * (Default: n) Do you want include subtitles? (y/n): y
  * (Default: 0:3) Type the number of subtitle track: 0:5
  * (Default: 3840x2160) Type the resolution: 
  * (Default: n) Do you want apply '-max_muxing_queue_size 9999' patch? (y/n): n
  
  * METADATA configuration:
  
  * (Default: Example) Type name of title: 
  * (Default: 2021) Type the year: 2016
  * (Default: Unknown) Type the genre: Thriller
  
  * COMMANDS THAT WILL BE EXECUTED:
  
    # Extract subtitles from file Example.mkv
    ffmpeg -i "Example.mkv" -map 0:5 "Example.srt"
  
    # Convert the file 'Example.mkv' to MP4
    ffmpeg -i "Example.mkv" -fps_mode cfr -af aresample=async=1 -map 0:0 -map 0:1 
    -vf subtitles="Example.srt" -s 3840x2160 -c:v libx264 -profile:v high 
    -b:v 6000k -preset medium -c:a aac -b:a 320k -ac 2 -clev 3dB -slev -6dB 
    -metadata title="Example (2016)" -metadata date="2016" -metadata genre="Thriller" 
    -metadata:s:v:0 title="Example (2016)" 
    -metadata:s:a:0 title="aac Stereo Audio (320k)" "Example.mp4"
  
  * (Default: y) Do you want run the conversion? (y/n): n
  

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