Download Work — Ttml

yt-dlp --write-subs --sub-format ttml https://example.com/video This downloads TTML if available. Use --list-subs first to check. Larger platforms serve TTML via JSON APIs. Example from a corporate LMS:

ffmpeg -i input.ttml output.vtt If you have seg_1.ttml , seg_2.ttml , etc.:

print(f"Converted {len(cues)} cues.") download_ttml("https://example.com/closedcaptions.ttml") ttml download

for f in sorted(glob.glob("seg_ .ttml")): tree = etree.parse(f) for p in tree.xpath("// [local-name()='p']"): div.append(p)

with open("combined.ttml", "wb") as out: out.write(etree.tostring(combined, pretty_print=True)) Here’s a real-world script that fetches a TTML file from a protected endpoint, parses it, and saves as SRT. yt-dlp --write-subs --sub-format ttml https://example

cat seg_*.ttml > full.ttml But you must ( <?xml...> and <tt> ). Better to use a script:

import glob from lxml import etree combined = etree.Element("tt", nsmap={None: "http://www.w3.org/ns/ttml"}) body = etree.SubElement(combined, "body") div = etree.SubElement(body, "div") Example from a corporate LMS: ffmpeg -i input

GET /api/captions/video123?format=ttml Authorization: Bearer <token> You can find these endpoints by inspecting the tab in DevTools. 3. Understanding TTML Structure (A Quick Reference) Here’s a minimal TTML file: