* Added `PP+exe:args` syntax
If `PP+exe:args` is specifically given, only it used.
Otherwise, `PP:args` and `exe:args` are combined.
If none of the `PP`, `exe` or `PP+exe` args are given, `default` is used
`Default` is purposely left undocumented since it exists only for backward compatibility
* Also added proper handling of args in `EmbedThumbnail`
Related: https://github.com/ytdl-org/youtube-dl/pull/27723
`to_screen`, `report_warning`, `report_error`, `write_debug`, `get_param`
This is a first step in standardizing these function. This has to be done eventually for extractors and downloaders too
Co-authored by: glenn-slayden
Modified from https://github.com/ytdl-org/youtube-dl/pull/26813/commits/c9a9ccf8a35e157e22afeaafc2851176ddd87e68
These improvements apply to reading the list of URLs from the file supplied via the `--batch-file` (`-a`) command line option.
1. Skip blank and empty lines in the file. Currently, lines with leading whitespace are only skipped when that whitespace is followed by a comment character (`#`, `;`, or `]`). This means that empty lines and lines consisting only of whitespace are returned as (trimmed) empty strings in the list of URLs to process.
2. [bug fix] Detect and remove the Unicode BOM when the file descriptor is already decoding Unicode.
With Python 3, the `batch_fd` enumerator returns the lines of the file as Unicode. For UTF-8, this means that the raw BOM bytes from the file `\xef \xbb \xbf` show up converted into a single `\ufeff` character prefixed to the first enumerated text line.
This fix solves several buggy interactions between the presence of BOM, the skipping of comments and/or blank lines, and ensuring the list of URLs is consistently trimmed. For example, if the first line of the file is blank, the BOM is incorrectly returned as a URL standing alone. If the first line contains a URL, it will be prefixed with this unwanted single character--but note that its being there will have inhibited the proper trimming of any leading whitespace. Currently, the `UnicodeBOMIE` helper attempts to recover from some of these error cases, but this fix prevents the error from happening in the first place (at least on Python3). In any case, the `UnicodeBOMIE` approach is flawed, because it is clearly illogical for a BOM to appear in the (non-batch) URL(s) specified directly on the command line (and for that matter, on URLs *after the first line* of a batch list, also)
3. Adds proper trimming of the " #" into the read_batch_urls processing so that the URLs it enumerates are cleaned and trimmed more consistently.
* Enabled --ignore by default
* Disabled --video-multistreams and --audio-multistreams by default
* Changed default format selection to 'bv*+ba/b' when --audio-multistreams is disabled
* Changed default format sort order to 'res,fps,codec,size,br,asr,proto,ext,has_audio,source,format_id'
* Changed default output template to '%(title)s [%(id)s].%(ext)s'
* Enabled `--list-formats-as-table` by default
* The idea is that it should be possible to negate any boolean option by adding a `no-` to the switch
New: `--no-ignore-dynamic-mpd`, `--no-allow-dynamic-mpd`, `--allow-dynamic-mpd`, `--youtube-include-hls-manifest`, `--no-youtube-include-hls-manifest`, `--no-youtube-skip-hls-manifest`, `--no-download`, `--no-download-archive`, `--resize-buffer`, `--part`, `--mtime`, `--no-keep-fragments`, `--no-cookies`, `--no-write-annotations`, `--no-write-info-json`, `--no-write-description`, `--no-write-thumbnail`, `--youtube-include-dash-manifest`, `--post-overwrites`, `--no-keep-video`, `--no-embed-subs`, `--no-embed-thumbnail`, `--no-add-metadata`, `--no-include-ads`, `--no-write-sub`, `--no-write-auto-sub`, `--no-playlist-reverse`, `--no-restrict-filenames`, `--youtube-include-dash-manifest`, `--no-format-sort-force`, `--flat-videos`, `--no-list-formats-as-table`, `--no-sponskrub`, `--no-sponskrub-cut`, `--no-sponskrub-force`
Renamed: `--write-subs`, --no-write-subs`, `--no-write-auto-subs, `--write-auto-subs`. Note that these can still be used without the ending "s"
* Added options: --video-multistreams, --no-video-multistreams, --audio-multistreams, --no-audio-multistreams
* New format selectors: best*, worst*, bestvideo*, bestaudio*, worstvideo*, worstaudio*
* Added b,w,v,a as alias for best, worst, video and audio respectively in format selection
* Changed video format sorting to show video only files and video+audio files together.
pukkandan