Use segmented=True when downloading multiple URLs to prevent inner downloads from overriding the total segment count, which caused the progress bar to always appear green (finished state).
This is still WIP so will continue to monitor.
- Use singleton _Aria2Manager to reuse one aria2c process via RPC
- Add downloads via aria2.addUri instead of stdin input file
- Track per-GID byte-level progress (completedLength/totalLength)
- Add thread-safe operations with threading.Lock
- Enable graceful cancellation by removing individual downloads via RPC
When DASH manifests have multiple audio AdaptationSets with the same representation IDs (e.g., both English and Japanese having id="0"), N_m3u8DL-RE would download the same track twice.
Now includes the language alongside the ID in selection args to properly disambiguate tracks across adaptation sets.
PR #38 refactored n_m3u8dl_re track selection to support DASH/ISM subtitle tracks, but this broke some subtitle downloads. Services that use direct URL downloads (Descriptor.URL) for subtitles, which n_m3u8dl_re does not support.
The track_selection function was using findall() to search for lang child elements, but in DASH manifests lang is an XML attribute on AdaptationSet. This caused language selection to fail for region-specific codes like es-419.
