From: rain1@airmail.cc
To: Hartmut Goebel <h.goebel@crazy-compilers.com>
Cc: guix-devel@gnu.org,
Guix-devel <guix-devel-bounces+rain1=airmail.cc@gnu.org>
Subject: Re: Replace Youtube-DL with HyperVideo
Date: Wed, 07 Aug 2019 10:39:10 +0100 [thread overview]
Message-ID: <c77513ab5d796f14907ae805eebc0aff@airmail.cc> (raw)
In-Reply-To: <5d79ff0c-4f69-6a08-7f1f-8eecc18dbd4b@crazy-compilers.com>
On 2019-08-07 10:02, Hartmut Goebel wrote:
> Am 05.08.19 um 20:56 schrieb Raghav Gururajan:
>> I came across this project called HyperVideo
>> (https://libregit.org/heck
>> yel/hypervideo). It is a fork of Youtube-DL, without non-free JS and
>> SWF bytecode.
>
> Huh? youtube-dl does not include any JS or SWF bytecode - so there is
> nothing to remove.
>
> And I just checked the diff, and there are not blobs removed (which is
> what I would have expected). The only things changed are:
>
> * Signature decryption for youtube signatures is removed.
> o The JS bytecode interpreter is removed - which AFAIU is not a
> complete interpreter, but only tried to fetch the calculated
> URL
> from the code.
> o The SWF bytecode interpreter is removed - which also AFAIU is
> not a complete interpreter.
> * The IqiyiSDKInterpreter removed in youtube_dl/extractor/iqiyi.py -
> theses seem to use some hard-coded authentication tokens for login
> at http://kylin.iqiyi.com/
>
> I can't see why this would require to replace youttube-dl by
> hypervideo.
Hello
According to my analysis youtube-dl is libre software.
there was some confusion at some point because it was thought that it
has a "javascript interpreter" and "executes non-free javascript
downloaded from the youtube website". I put these in quotes because they
are not really true. The "interpreter" is actually just a regex that
strips out a certain snippet and an simple arithmetic expression
evaluator, it doesn't handle much of javascript and it's very much below
turing complete. It uses this to compute a key that's needed to access
certain videos.
Here is my post about it on gnu-linux-libre
https://lists.nongnu.org/archive/html/gnu-linux-libre/2017-07/msg00000.html
I think the fork will divide our efforts and reduce our ability to
cooperate with each other as a free software community. I don't
recommend it.
prev parent reply other threads:[~2019-08-07 9:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-05 18:56 Replace Youtube-DL with HyperVideo Raghav Gururajan
2019-08-07 9:02 ` Hartmut Goebel
2019-08-07 9:39 ` rain1 [this message]
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