Pierre Ynard authored 2 years ago and David committed 2 years ago

Due to the severely increased complexity of "n" descrambling code, a
quick fix is unfortunately not foreseeable. For now, let users know more
clearly what's going on and what's to expect or not.

Ref #27227

Pierre Ynard authored 2 years ago and David committed 2 years ago

The descrambling script section was updated from a simple and linear
chain of calls, to a complex execution tree with conditional branches.
Failure to recognize and parse this call structure (or lack thereof)
resulted in a silent no-op. Add a check to properly report an error.

Ref #27227

Pierre Ynard authored 2 years ago and David committed 2 years ago

It was possible, when encountering different code from what was expected
for some known transformations, to void the code parsing pointer instead
of advancing it, resulting in a subsequent crash of the script and total
playback failure. Add a fallback and check, to prevent and gracefully
deal with this, and still allow playback, even if throttled, in case of
descrambling failure.

Marvin Scholz authored 2 years ago and Hugo Beauzée-Luyssen committed 2 years ago

Mention the new recommended way of requiring modules.

Marvin Scholz authored 2 years ago and Hugo Beauzée-Luyssen committed 2 years ago

The `-I cli` no longer starts the lua CLI, luacli does not work
either, only `-I luaintf --lua-intf cli` does actually start the Lua
CLI interface properly.

Marvin Scholz authored 3 years ago and Hugo Beauzée-Luyssen committed 2 years ago

The file directly modifies the global table (_G) so it does not
seem necessary at all to expose anything explicitly.

Marvin Scholz authored 2 years ago and Hugo Beauzée-Luyssen committed 2 years ago

This script works using tools that operate on the
no longer used GConf database.

Marvin Scholz authored 2 years ago and Hugo Beauzée-Luyssen committed 2 years ago

These were used by SVN, we are no longer using that though.

Rémi Denis-Courmont authored 2 years ago and Hugo Beauzée-Luyssen committed 2 years ago

Looking through the tar command line help is brittle, and as a matter of
facts fails miserably with non-English locales.

Just feed a sorted list of files for tar to archive instead. This should
work regardless of the tar tool version in use.

Fixes Debian #990247.

This is a synonym for .ts used by certain video camera systems.

Marcin Jakubowski authored 2 years ago and Felix Paul Kühne committed 2 years ago

improves movie info (show name, season and episode number) matching by
trying meta data as well as the cleaned up filename and trying out
additional patterns

Marcin Jakubowski authored 2 years ago and Rémi Denis-Courmont committed 2 years ago

fixes #23624, where the determined file name from a remote location
is not a valid file name for saving locally, e.g. from yt

Lyndon Brown authored 3 years ago and Rémi Denis-Courmont committed 3 years ago

Fixes #26687.

YoutubeDL is pretty much dead.
Fixes #26206.

Pierre Ynard authored 3 years ago and Rémi Denis-Courmont committed 3 years ago

Since last month, requests without a valid referrer get rejected with an
HTTP 403 error.

We might want to consider that the lua script API should track and pass
such referrers by itself.

Pierre Ynard authored 3 years ago and Rémi Denis-Courmont committed 3 years ago

The descrambling function is now called through an intermediate array
variable. This change has also added two extra ways to recover the
function name. Add support to parse and resolve any of them.

Fixes #26574

Fix #26356

Hannes Domani authored 4 years ago and Jean-Baptiste Kempf committed 3 years ago

Due to a bug in the directory, some streams lack a listen URL.

Fix #25309

Pierre Ynard authored 3 years ago and Hugo Beauzée-Luyssen committed 3 years ago

They now appear; add support for parsing them.

Fixes #26317

Pierre Ynard authored 3 years ago and Hugo Beauzée-Luyssen committed 3 years ago

A new variant of compound transformation has the Base64 alphabet
generation and the compounding itself as two separate data array
elements, contrary to what was observed so far. Add support for those.

Fixes #26285

Pierre Ynard authored 3 years ago and Hugo Beauzée-Luyssen committed 3 years ago

A new standalone compound transformation, taking its Base64 alphabet
as extra input argument, has revealed itself. We support parsing and
passing this one more argument from the script section.

Technically this last argument can be a function or rather the result
of its call, but with no argument, we know what's always returned, and
don't need to treat it as a function. This is less clean but simpler and
will do for now.

Pierre Ynard authored 3 years ago and Hugo Beauzée-Luyssen committed 3 years ago

Newly observed transformations reveal that the uncertain character
code variable used as constant offset, really isn't one and is simply
supposed to be the alphabet's length. Thus even more so, it is a no-op
on the alphabet's algebraic modulo group, and probably just an artifact
of how modulo of negative numbers is handled in javascript. Simplify it
away.

User agents are apparently now expected to do this; failure to do so
results in the video file data transfer getting throttled down to rates
such as 80 kB/s, 60 kB/s or 40 kB/s, below playback rate, and usually
resulting in a video that hangs upon loading or every few seconds, and
is impossible to play. This behavior seems to have first appeared in
June, but been fully rolled out only last week.

Just like with URL signatures, we interoperate with YouTube by
fulfilling what's apparently expected from us, using the same approach
as so far: we parse the descrambling rules from the javascript code, and
apply them.

Fixes #26174

This should help against transient errors, and parsing of the javascript
URL isn't the part that's most likely to break.

We'll be descrambling the "n" parameter in addition to the URL signature
using this same javascript web asset, so we want to be able to share and
reuse it.

Use a more specific name as this isn't the only parameter anymore that
we'll be descrambling by parsing and emulating javascript.

Javascript variables can contain other, special characters, also %a
depends on the locale.

After tightening access restrictions to it, the get_video_info YouTube
API was completely retired around July 2021, with an HTTP 410 Gone code.
All this fallback achieves anymore is poor UX.