Demo1

NOTE: Feel free to create issues in case of any questions!

FFmpeg Subtitle Filtering Demo 1

Text-Manipulation of Bitmap Subtitles

• Is that possible?
• Without effort and individual work?
• With accurate results?
• Preserving the original style and presentation?
• In a single FFmpeg run?
• In live streaming scenarios?

while (<reader is projecting doubts>) {
  printf("Yes\n");
}

Example

Demo Video

Demo1_ComparePlayback_Small.mp4

Full Quality Output

Download the full quality video: Demo1_ComparePlayback.mp4

Processing:

• Input File: M2TS with DVB Subtitles
  ➜ bitmap subs
• graphicsub2text (OCR with style detection)
  ➜ textsubs/ASS
• textmode (text manipulation and replacements)
  ➜ textsubs/ASS
• text2graphicsubs
  ➜ bitmap subs
• Output File: M2TS with DVB Subtitles

Basic Command

ffmpeg -loglevel verbose -i Demo1_Source.ts -filter_complex "[0:13]graphicsub2text=delay_when_no_duration=1:recognize=-bold-font,textmod=mode=leet,text2graphicsub=force_style='BorderStyle=3'" -c:v copy -c:a copy -c:s dvb_subtitle -y Demo1_Output.ts

Original Demo Command

ffmpeg -loglevel verbose -i Demo1_Source.ts -filter_complex "[0:13]graphicsub2text=delay_when_no_duration=1:recognize=-bold-font,textmod=mode=replace_words:find='},an actress.,Theatre and films,you know?,But it,s hard if you haven,t got the,connections to open the right doors.,the guy that,knew him,It was great,Letherbridge, with...,the tabloids':replace='\\bord3},{\\1c&H2222EE&\\u\\b}softworkz & tcoza,{\\1c&H2222EE&\\u\\b}present..., , ,Subtitle Filtering,\\N ,DVD-Sub >> OCR >> TEXTMOD >> DVD-Sub,softworkz who,knew tcoza,softworkz was great,TCoza, with softworkz,TCoza',text2graphicsub=force_style='BorderStyle=3'" -c:v copy -c:a copy -c:s dvb_subtitle -y Demo1_Output.ts