DVB Subtitle

import subprocess
# Extracting DVB subtitles requires a demuxer like FFmpeg, not standard file parsing
# This command maps the subtitle stream from a TS file and copies it to a standalone format
subprocess.run(['ffmpeg', '-i', 'broadcast.ts', '-map', '0:s:0', '-c:s', 'copy', 'subs.sup'])

// Parsing DVB subtitles in Node requires deep MPEG-TS PES packet parsing.
// Client-side libraries like 'hls.js' handle this by parsing the TS stream, extracting the RLE bitmaps, applying the Color Look-Up Table (CLUT), and drawing them onto a canvas.

import "fmt"
// DVB subtitle parsing in Go requires decoding the MPEG-TS layer, finding the PES packet with data_identifier 0x20, and decoding the RLE pixel data into an image.Image interface.

// PHP is ill-equipped for parsing live DVB subtitle bitstreams. In web backends, you would typically use exec() to shell out to FFmpeg for extraction or OCR.