[BUG] Subtitles not extracted from Twitch stream

[superbonaci]

Download Twitch stream https://www.twitch.tv/videos/1980035805 in ts format.

$ ts-cc-extractor -i output.ts -o sub.srt
Progress: 100%
Traceback (most recent call last):
  File "/opt/homebrew/bin/ts-cc-extractor", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/__main__.py", line 24, in main
    subs_text = extract_subtitles(f_ts, fmt=args.format)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/extractor.py", line 93, in extract_subtitles
    scc_files = extract_scc(ts_file, **options)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/extractor.py", line 79, in extract_scc
    handle_file(ts_file, progress_callback, cc_files, **options)
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/media_tools/ts.py", line 2757, in handle_file
    importer.add_data(data, progress_callback)
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/media_tools/ts.py", line 1105, in add_data
    self.observer.on_pes(packet.pid, self.pids[packet.pid])
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/media_tools/ts.py", line 2693, in on_pes
    frames = self.h264_parser.add_pes(pes.payload, pes.pts, pes.dts)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ts_cc_extractor/media_tools/ts.py", line 1803, in add_pes
    nal_data = nal_data[0] + nal_data
               ~~~~~~~~~~~~^~~~~~~~~~
TypeError: unsupported operand type(s) for +: 'int' and 'bytes'

MediaInfo data:

[superbonaci]

Video Download Helper requires to change the settings to get m2ts streams. Anyway here's a sample Transport Stream video directly from Twitch, which has subtitles in CC608 format:

Rename output.z01.zip to output.z01 and extract output.zip.

output.zip
output.z01.zip

HandBrake can extract them and either burn them into the video or save to mkv as separate track.

• Download subtitles from videos that have embedded subtitles and option to render it in video lay295/TwitchDownloader#948