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subtitles [2019/06/29 17:00]
beandog
subtitles [2020/10/26 18:48]
beandog [Detect CC]
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   * [[ffmpeg]]   * [[ffmpeg]]
  
-** WARNING: ** ffmpeg automatically muxes the closed captioning in if it exists, and will not show up in the map output, meaning it cannot be disabled. Also, ''​mediainfo''​ may or may not display it. +** WARNING: ** ffmpeg automatically muxes the closed captioning in **with libx264** ​if it exists, and will not show up in the map output, meaning it cannot be disabled. Also, ''​mediainfo''​ may or may not display it, while other applications (mplayer, mpv, HandBrake) will. It can be disabled in encoding with ''​-a53cc 0''​ for libx264. Using ''​libx265''​ does not encode the CC at all.
 ==== Detect VobSub ==== ==== Detect VobSub ====
  
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 For DVDs, closed captioning streams are embedded in the video stream. For DVDs, closed captioning streams are embedded in the video stream.
 +
 +By default, ffmpeg will copy the Closed Captions automatically. Even passing ''​-sn''​ will not disable them. They must be selected using lavfi and modified / ignored that way.
  
 The fastest way is to see if it has closed captioning is using ffprobe and looking for ''​Closed Captions''​ in the output: The fastest way is to see if it has closed captioning is using ffprobe and looking for ''​Closed Captions''​ in the output:

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