Discussion:
How to install the new Video Download Helper Companion App and have Firefox recognize it
Temlakos
2018-02-23 12:48:22 UTC
Permalink
Everyone:

Firefox crippled most of its extensions beginning with Version 57. (Why
they borrowed technology from Google, I'll never know.) The developers
of the Video Download Helper responded by creating a Companion Application.

I have tried installing that application dozens of times. But /Firefox
refuses to recognize it/. And without that recognition, VDH will not
download most videos from YouTube. (Was that the idea?)

Has anyone gotten that companion app to work? If so, how may I do it?

Temlakos
stan
2018-02-23 20:40:11 UTC
Permalink
On Fri, 23 Feb 2018 07:48:22 -0500
VDH will not download most videos from YouTube. (Was that the idea?)
That's been a suspicion I've had as well. A requirement for further
funding? For some reason, content providers frown on the practice of
viewers downloading their creations. :-)

The splitting of extensions into two parts *does* improve security,
however, so it could be legit.
Has anyone gotten that companion app to work? If so, how may I do it?
Sort of. When dwhelper fails to download a video, at the bottom of the
drop down when the icon is clicked, you will see a details link. Click
on that, and you will likely see that one of the libraries in
~/net.downloadhelper.coapp-1.1.3/converter/build/linux/64/
is failing. I converted some of the files there to symbolic links to
the equivalent files on Fedora. In particular, ffmpeg, ffplay,
ffprobe, and libz so far. dwhelper is developed using ubuntu, and I
think they expect libraries in different places and with different
names.

I vaguely recall I had it working properly when I replaced every file
there with a link, but every upgrade overwrites that, so I haven't
tried it for a while since it is tedious to do.

With that change, it downloads files when I click on them. However, it
only saves small files. It downloads large files, I see the
large temporary file, but when it tries to save them, it writes some
kind of small meaningless file. I haven't found the reason yet. I
recall seeing something about the app being open source, so I was going
to get the source and see what it was doing / why it was failing. When
I click the configuration option that says 'save temporary files', it
doesn't.

One alternative would be to hack firefox to put in a switch that saves
files as they are being viewed. That's a lot more work, and requires
domain and C++ knowledge. Probably beyond me.

ant video downloader might be an alternative, but they were focusing on
windows the last time I tried them.

Yeah, the new firefox might be great internally, but it sure took a hit
for user customization and extensibility.

Another alternative is to get firefox 57 from koji and run it in a
virtual machine. The ant video downloader and dwhelper for 57 and
before are still available on their websites, so you can istall them,
and tell firefox not to automatically update extensions. Then, when
you want to download a file, just use that firefox to do it.
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Andras Simon
2018-02-23 21:40:07 UTC
Permalink
Post by Temlakos
Firefox crippled most of its extensions beginning with Version 57. (Why
they borrowed technology from Google, I'll never know.) The developers
of the Video Download Helper responded by creating a Companion Application.
I have tried installing that application dozens of times. But /Firefox
refuses to recognize it/. And without that recognition, VDH will not
download most videos from YouTube. (Was that the idea?)
Has anyone gotten that companion app to work? If so, how may I do it?
Works for me... I downloaded the tar.gz file and followed the instructions:

tar -xf net.downloadhelper.coapp-1.1.3-1_amd64.tar.gz -C ~
~/net.downloadhelper.coapp-1.1.3/bin/net.downloadhelper.coapp-linux-64
install --user

If you want to download videos from youtube, youtube-dl may be more convenient.

Andras
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Temlakos
2018-02-23 22:46:48 UTC
Permalink
Post by Andras Simon
Post by Temlakos
Firefox crippled most of its extensions beginning with Version 57. (Why
they borrowed technology from Google, I'll never know.) The developers
of the Video Download Helper responded by creating a Companion Application.
I have tried installing that application dozens of times. But /Firefox
refuses to recognize it/. And without that recognition, VDH will not
download most videos from YouTube. (Was that the idea?)
Has anyone gotten that companion app to work? If so, how may I do it?
tar -xf net.downloadhelper.coapp-1.1.3-1_amd64.tar.gz -C ~
~/net.downloadhelper.coapp-1.1.3/bin/net.downloadhelper.coapp-linux-64
install --user
If you want to download videos from youtube, youtube-dl may be more convenient.
Andras
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Did it make any difference that I tried to install it system-wide, and
not for a user only?

Temlakos
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stan
2018-02-24 00:06:46 UTC
Permalink
On Fri, 23 Feb 2018 17:46:48 -0500
Post by Temlakos
Did it make any difference that I tried to install it system-wide,
and not for a user only?
I can't say for sure, but it didn't for me as I followed the
instructions from their web page for user. If it works for Andras, it
must be something about my (and your) system setup causing the problem.
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Javier Perez
2018-03-05 07:25:36 UTC
Permalink
I switched to youtube-dl

It was too much pain trying to make VDH to behave.
Post by stan
On Fri, 23 Feb 2018 17:46:48 -0500
Post by Temlakos
Did it make any difference that I tried to install it system-wide,
and not for a user only?
I can't say for sure, but it didn't for me as I followed the
instructions from their web page for user. If it works for Andras, it
must be something about my (and your) system setup causing the problem.
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~~~~ toward the day...
m m Pepebuho watches
from his high perch.
Temlakos
2018-03-05 12:39:53 UTC
Permalink
Post by Javier Perez
I switched to youtube-dl
It was too much pain trying to make VDH to behave.
All right: what commands does one use with youtube-dl? Is that a
command-line application? I suspect I might already have it in my
system--but I thought "dl" meant "dynamic linking," same as in MS
Windows. Does "-dl" mean "download" instead? If so, I'd love to have a
full set of commands so I can bag me some videos before YouTube takes
them down.

Temlakos
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Ed Greshko
2018-03-05 13:22:05 UTC
Permalink
All right: what commands does one use with youtube-dl? Is that a command-line
application? I suspect I might already have it in my system--but I thought "dl"
meant "dynamic linking," same as in MS Windows. Does "-dl" mean "download" instead?
If so, I'd love to have a full set of commands so I can bag me some videos before
YouTube takes them down.
dnf install youtube-dl

[***@meimei ~]$ dnf info youtube-dl
Last metadata expiration check: 7 days, 14:27:04 ago on Mon 26 Feb 2018 06:54:20 AM CST.
Installed Packages
Name         : youtube-dl
Version      : 2018.02.08
Release      : 2.fc27
Arch         : noarch
Size         : 8.4 M
Source       : youtube-dl-2018.02.08-2.fc27.src.rpm
Repo         : @System
From repo    : updates
Summary      : A small command-line program to download online videos
URL          : https://yt-dl.org
License      : Unlicense
Description  : Small command-line program to download videos from YouTube and other
             : sites.

And then the one thing many people forget

man youtube-dl
--
If simple questions can be answered with a simple google query then why are there so
many of them?
Temlakos
2018-03-05 14:45:09 UTC
Permalink
Post by Ed Greshko
All right: what commands does one use with youtube-dl? Is that a command-line
application? I suspect I might already have it in my system--but I thought "dl"
meant "dynamic linking," same as in MS Windows. Does "-dl" mean "download" instead?
If so, I'd love to have a full set of commands so I can bag me some videos before
YouTube takes them down.
dnf install youtube-dl
Last metadata expiration check: 7 days, 14:27:04 ago on Mon 26 Feb 2018 06:54:20 AM CST.
Installed Packages
Name         : youtube-dl
Version      : 2018.02.08
Release      : 2.fc27
Arch         : noarch
Size         : 8.4 M
Source       : youtube-dl-2018.02.08-2.fc27.src.rpm
From repo    : updates
Summary      : A small command-line program to download online videos
URL          : https://yt-dl.org
License      : Unlicense
Description  : Small command-line program to download videos from YouTube and other
             : sites.
And then the one thing many people forget
man youtube-dl
I've tried three times to download videos, and each time I'm getting a
fatal error: "Name or service not known." How do I get past that?

Temlakos
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Ed Greshko
2018-03-05 14:50:59 UTC
Permalink
Post by Temlakos
"Name or service not known." How do I get past that?
Do you think it is possible for anyone to answer that question without your giving
specific examples of what you've done?
--
If simple questions can be answered with a simple google query then why are there so
many of them?
Temlakos
2018-03-05 15:00:17 UTC
Permalink
Post by Ed Greshko
Post by Temlakos
"Name or service not known." How do I get past that?
Do you think it is possible for anyone to answer that question without your giving
specific examples of what you've done?
Try this:

$ youtube-dl -i


Temlakos
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Andras Simon
2018-03-05 15:09:43 UTC
Permalink
Post by Temlakos
Post by Ed Greshko
Post by Temlakos
"Name or service not known." How do I get past that?
Do you think it is possible for anyone to answer that question without your giving
specific examples of what you've done?
$ youtube-dl -i http://youtu.be/mqbcEw7AkU8
$ youtube-dl -i http://youtu.be/mqbcEw7AkU8
[youtube] mqbcEw7AkU8: Downloading webpage
[youtube] mqbcEw7AkU8: Downloading video info webpage
[youtube] mqbcEw7AkU8: Extracting video information
[download] Destination: David Hogg Supercollection-mqbcEw7AkU8.f247.webm
...

No problem here.
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Ed Greshko
2018-03-05 15:09:44 UTC
Permalink
Post by Temlakos
Post by Ed Greshko
Post by Temlakos
"Name or service not known." How do I get past that?
Do you think it is possible for anyone to answer that question without your giving
specific examples of what you've done?
$ youtube-dl -i http://youtu.be/mqbcEw7AkU8
[***@meimei ~]$ youtube-dl http://youtu.be/mqbcEw7AkU8
[youtube] mqbcEw7AkU8: Downloading webpage
[youtube] mqbcEw7AkU8: Downloading video info webpage
[youtube] mqbcEw7AkU8: Extracting video information
[download] Destination: David Hogg Supercollection-mqbcEw7AkU8.f247.webm
[download] 100% of 33.94MiB in 00:07
[download] Destination: David Hogg Supercollection-mqbcEw7AkU8.f251.webm
[download] 100% of 4.41MiB in 00:00
[ffmpeg] Merging formats into "David Hogg Supercollection-mqbcEw7AkU8.webm"
Deleting original file David Hogg Supercollection-mqbcEw7AkU8.f247.webm (pass -k to keep)
Deleting original file David Hogg Supercollection-mqbcEw7AkU8.f251.webm (pass -k to keep)

and mplayer plays the video just fine.
--
If simple questions can be answered with a simple google query then why are there so
many of them?
Temlakos
2018-03-05 15:24:41 UTC
Permalink
Post by Andras Simon
Post by Temlakos
Post by Ed Greshko
Post by Temlakos
"Name or service not known." How do I get past that?
Do you think it is possible for anyone to answer that question without your giving
specific examples of what you've done?
$ youtube-dl -i http://youtu.be/mqbcEw7AkU8
[youtube] mqbcEw7AkU8: Downloading webpage
[youtube] mqbcEw7AkU8: Downloading video info webpage
[youtube] mqbcEw7AkU8: Extracting video information
[download] Destination: David Hogg Supercollection-mqbcEw7AkU8.f247.webm
[download] 100% of 33.94MiB in 00:07
[download] Destination: David Hogg Supercollection-mqbcEw7AkU8.f251.webm
[download] 100% of 4.41MiB in 00:00
[ffmpeg] Merging formats into "David Hogg Supercollection-mqbcEw7AkU8.webm"
Deleting original file David Hogg Supercollection-mqbcEw7AkU8.f247.webm (pass -k to keep)
Deleting original file David Hogg Supercollection-mqbcEw7AkU8.f251.webm (pass -k to keep)
and mplayer plays the video just fine.
[***@temlakos ~]$ cd Videos/Other
[***@temlakos Other]$ youtube-dl http://youtu.be/mqbcEw7AkU8
[youtube] mqbcEw7AkU8: Downloading webpage
ERROR: Unable to download webpage: <urlopen error [Errno -2] Name or
service not known> (caused by URLError(gaierror(-2, 'Name or service not
known'),))
[***@temlakos Other]$
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Ed Greshko
2018-03-05 19:56:57 UTC
Permalink
Post by Andras Simon
[youtube] mqbcEw7AkU8: Downloading webpage
ERROR: Unable to download webpage: <urlopen error [Errno -2] Name or service not
known> (caused by URLError(gaierror(-2, 'Name or service not known'),))
This is telling you that DNS resolution isn't working.

What do you get for....

host youtu.be
--
If simple questions can be answered with a simple google query then why are there so
many of them?
Temlakos
2018-03-05 23:12:48 UTC
Permalink
Post by Ed Greshko
Post by Andras Simon
[youtube] mqbcEw7AkU8: Downloading webpage
ERROR: Unable to download webpage: <urlopen error [Errno -2] Name or service not
known> (caused by URLError(gaierror(-2, 'Name or service not known'),))
This is telling you that DNS resolution isn't working.
What do you get for....
host youtu.be
[***@temlakos ~]$ host youtu.be
youtu.be has address 172.217.10.238
youtu.be has IPv6 address 2607:f8b0:4006:81b::200e
youtu.be mail is handled by 10 aspmx.l.google.com.
youtu.be mail is handled by 10 gmr-smtp-in.l.google.com.
youtu.be mail is handled by 30 alt2.aspmx.l.google.com.
youtu.be mail is handled by 50 alt4.aspmx.l.google.com.
youtu.be mail is handled by 40 alt3.aspmx.l.google.com.
youtu.be mail is handled by 20 alt1.aspmx.l.google.com.
[***@temlakos ~]$
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Ed Greshko
2018-03-06 01:20:23 UTC
Permalink
Post by Temlakos
Post by Ed Greshko
Post by Andras Simon
[youtube] mqbcEw7AkU8: Downloading webpage
ERROR: Unable to download webpage: <urlopen error [Errno -2] Name or service not
known> (caused by URLError(gaierror(-2, 'Name or service not known'),))
This is telling you that DNS resolution isn't working.
What do you get for....
host youtu.be
youtu.be has address 172.217.10.238
youtu.be has IPv6 address 2607:f8b0:4006:81b::200e
youtu.be mail is handled by 10 aspmx.l.google.com.
youtu.be mail is handled by 10 gmr-smtp-in.l.google.com.
youtu.be mail is handled by 30 alt2.aspmx.l.google.com.
youtu.be mail is handled by 50 alt4.aspmx.l.google.com.
youtu.be mail is handled by 40 alt3.aspmx.l.google.com.
youtu.be mail is handled by 20 alt1.aspmx.l.google.com.
Well, that is what you should get.

I can only reproduce the error you're seeing by modifying /etc/resolv.conf to break DNS.

So, why it isn't working on your system is a mystery.  youtube-dl is written in
python.  If you know how to debug it, you should.   Or, if you've made manually
changes to your system in the area of python you may want to check your work.



 
--
If simple questions can be answered with a simple google query then why are there so
many of them?
Temlakos
2018-03-06 15:10:29 UTC
Permalink
Post by Ed Greshko
Post by Temlakos
Post by Ed Greshko
Post by Andras Simon
[youtube] mqbcEw7AkU8: Downloading webpage
ERROR: Unable to download webpage: <urlopen error [Errno -2] Name or service not
known> (caused by URLError(gaierror(-2, 'Name or service not known'),))
This is telling you that DNS resolution isn't working.
What do you get for....
host youtu.be
youtu.be has address 172.217.10.238
youtu.be has IPv6 address 2607:f8b0:4006:81b::200e
youtu.be mail is handled by 10 aspmx.l.google.com.
youtu.be mail is handled by 10 gmr-smtp-in.l.google.com.
youtu.be mail is handled by 30 alt2.aspmx.l.google.com.
youtu.be mail is handled by 50 alt4.aspmx.l.google.com.
youtu.be mail is handled by 40 alt3.aspmx.l.google.com.
youtu.be mail is handled by 20 alt1.aspmx.l.google.com.
Well, that is what you should get.
I can only reproduce the error you're seeing by modifying /etc/resolv.conf to break DNS.
So, why it isn't working on your system is a mystery.  youtube-dl is written in
python.  If you know how to debug it, you should.   Or, if you've made manually
changes to your system in the area of python you may want to check your work.
It would appear that my system can resolve domains like "youtube.com"
but not the short form "youtu.be".

Because I just tried a download using the long-form URL--the standard
URL to which you always navigate, not the short-form URL you get from
the "share" routine. The download worked, exactly as your example did,
even to producing a good Matroska video file.

Temlakos
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Tim
2018-03-06 00:40:15 UTC
Permalink
Post by Temlakos
what commands does one use with youtube-dl?
It's a command line tool. There's a few ways I've used it:

1. Give it the web page address of a youtube clip:
youtube-dl


2. Give it the code number of a youtube clip:
youtube-dl OoI57NeMwCc
(this is the same as the above clip)

3. Give it the web page address of some other site that has videos
playing on it, as per my first example.

Not all clips will download, the sites may put in insurmountable
restrictions, or awkward to avoid restrictions, or may be simply
incompatible. According to the man page, there is a list of supported
sites.

I've frequently used it to play things that just stutter and jam when
using a web browser, or when the site doesn't want to play ball with a
web browser running "noscript."

Sometimes, if you get a failure to download, simply repeating the
command (without changing anything) will make it work.

--

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