Necessary for #343.
* They are identified by `vcodec=acodec='none'`
* These formats show as the worst in `-F`
* Any postprocessor that expects audio/video will be skipped
* `b*` and all related selectors will skip such formats
* This commit also does not add any selector for downloading such formats. They have to be explicitly requested by the `format_id`. Implementation of a selector is left for when #389 is resolved
In some DASH manifests, the FourCC attribute is actually present,
but empty. We thus apply the same fallback to 'AACL' that we do
when the attribute is entirely absent.
Authored by: fstirlitz
When the manifest is not downloadable by native downloader, it already is able to detect it and switch to `ffmpeg`. So there doesn't seem to be a reason anymore to use ffmpeg as the preferred downloader
_parse_ism_formats was extended into _parse_ism_formats_and_subtitles;
all direct users were updated, though _extract_ism_formats was left
as a compatibility wrapper.
The SSTR downloader was also modified in order to prepare for muxing
subtitle streams, although no support for any subtitle codecs was
added in this commit.
_extract_m3u8_formats is renamed to _extract_m3u8_formats_and_subtitles
and extended to handle subtitle tracks instead of skipping them;
a wrapper with the old name is provided for compatibility.
_parse_m3u8_formats is likewise renamed and extended, but without adding
the compatibility wrapper; the test suite is adjusted to test the enhanced
method instead.
Closes#121
TODO:
* Add an option for the user to specify newest/popular and max number of comments
* Refactor the download code and generalize with TabIE
* Parse time_text to timestamp
* All modules and binary names are changed
* All documentation references changed
* yt-dlp no longer loads youtube-dlc config files
* All URLs changed to point to organization account
Co-authored-by: Pccode66
Co-authored-by: pukkandan
2021-02-25 00:15:56 +05:30
Renamed from youtube_dlc/extractor/common.py (Browse further)
