Linux 如何获取 YouTube 视频的 URL 以下载它？
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时间：2020-08-05 00:04:59 来源:igfitidea点击:
How to get the URL of a youtube video to download it?
提问by xRobot
I want download this video on my PC ( also in HD format ): http://www.youtube.com/watch?v=d4RiUy23e9s
我想在我的电脑上下载这个视频（也是高清格式）：http: //www.youtube.com/watch?v=d4RiUy23e9s
So I want the URL of the .flv, .avi, .mp4 or whatever to download it with wget or other download manager. How can I do this ?
所以我想要 .flv、.avi、.mp4 或任何文件的 URL，以便使用 wget 或其他下载管理器下载它。我怎样才能做到这一点 ？
I don't want get the url throught programs o webtools like keepvids.
我不想通过诸如 keepvids 之类的网络工具的程序获取 url。
采纳答案by Ernani Joppert
use wget, along with the youtube video url and append a fmt=22 for 720p or fmt=387 for 1080p
使用 wget 以及 youtube 视频网址，并为 720p 附加 fmt=22 或为 1080p 添加 fmt=387
回答by R4D4
I use a Firefox addon called EmbeddedObjectswhich when I'm on that page lets me know there is something to download and it downloads the actual file behind the flash file as an avi.
我使用名为EmbeddedObjects的 Firefox 插件，当我在该页面上时，它让我知道有东西要下载，它会将 Flash 文件后面的实际文件下载为 avi。
回答by Raphael Müller
a post that describes what you want:
描述您想要的内容的帖子：
Edit:
编辑：
To get the FLV Url in your application, check out: http://geniusofevil.wordpress.com/2009/04/30/howto-get-direct-youtube-video-flv-url/
要在您的应用程序中获取 FLV 网址，请查看：http: //geniusofevil.wordpress.com/2009/04/30/howto-get-direct-youtube-video-flv-url/
回答by Harsh Gupta
1.Right click on video and select 'pop out'.
2.Wait for the video to start buffering.
3.Right click on the video and select 'Save video as'.
1.右键单击视频并选择“弹出”。
2.等待视频开始缓冲。
3.右键单击视频并选择“将视频另存为”。
回答by Harikrishnan
Try this
尝试这个
#!/usr/bin/perl -T
use strict;
use warnings;
#
## ,:, Download Youtube videos and music using wget
## Script Name : youtube_wget_video.pl
## Version : 0.34
## Valid from : May 2013
## OS Support : Linux, Mac OSX, OpenBSD, FreeBSD or any system with perl
# `:`
## Two arguments
## Youtube URL from the browser
## prefix to the file name of the video (optional)
#
############ options ##########################################
# Option: what file type do you want to download? The string is used to search
# in the youtube URL so you can choose mp4, webm, avi or flv. mp4 seems to
# work on the most players like android, ipod, ipad, iphones, vlc and mplayer.
my $fileType = "mp4";
# Option: what visual resolution or quality do you want to download? List
# multiple values just in case the highest quality video is not available, the
# script will look for the next resolution. You can choose "highres" for 4k
# (4096x2304), "hd1080" for 1080p, "hd720" for 720p, "itag=18" which means
# standard definition 640x380 and "itag=17" which is mobile resolution 144p
# (176x144). The script will always prefer to download the highest resolution
# video format from the list if available. Do not download highres 4k content
# unless you have a 4k tv. That would just be silly.
my $resolution = "hd1080,hd720,itag=18";
# Option: How many times should the script retry the download if wget fails for
# any reason? Do not make this too high as a reoccurring error will just hit
# youtube over and over again. A value of 3 to 10 works well.
my $retryTimes = 5;
# Option: do you want the resolution of the video in the file name? zero(0) is
# no and one(1) is yes. This option simply puts "_hd1080.mp4" or similar at the
# end of the file name.
my $resolutionFilename = 0;
# Option: turn on DEBUG mode. Use this to reverse engineering this code if you are
# making changes or you are building your own youtube download script.
my $DEBUG=0;
#################################################################
## clear the environment and set our path
$ENV{ENV} ="";
$ENV{PATH} = "/bin:/usr/bin:/usr/local/bin";
## initialize retry loop and resolution variables
my $prefix = "";
my $retry = 1;
my $retryCounter = 0;
my $resFile = "unknown";
my $user_url = "";
my $user_prefix = "";
my $url = "";
## collect the URL from the command line argument and untaint the input
if (defined($ARGV[0])) {
chomp($user_url = $ARGV[0]);
$url = "" if ($user_url =~ m/^([a-zA-Z0-9\-\&\?\=\:\.\/\_]+)$/ or die "\nError: Illegal characters in YouTube URL\n\n" );
} else {
print "\nError: You Must specify a Youtube URL\n\n";
exit;
}
## declare the user defined file name prefix if specified and untaint the input
if (defined($ARGV[1])) {
chomp($user_prefix = $ARGV[1]);
$prefix = "" if ($user_prefix =~ m/^([a-zA-Z0-9\_\-\.\ ]+)$/ or die "\nError: Illegal characters in filename prefix\n\n" );
}
## retry getting the video if the script fails for any reason
while ( $retry != 0 && $retryCounter < $retryTimes ) {
## download the html code from the youtube page suppling the page title and the
## video url. The page title will be used for the local video file name and the
## url will be sanitized and passed to wget for the download.
my $html = `wget -Ncq -e convert-links=off --keep-session-cookies --save-cookies /dev/null --no-check-certificate "$url" -O-` or die "\nThere was a problem downloading the HTML file or the video is not open to the public.\n\n";
## format the title of the page to use as the file name
my ($title) = $html =~ m/<title>(.+)<\/title>/si;
$title =~ s/[^\w\d]+/_/g or die "\nError: title of the HTML page not found. Check the URL.\n\n";
$title =~ s/_youtube//ig;
$title =~ s/^_//ig;
$title = lc ($title);
$title =~ s/_amp//ig;
## collect the URL of the video from the HTML page
my ($download) = $html =~ /"url_encoded_fmt_stream_map"(.*)/ig;
# Print all of the separated strings in the HTML page
print "\n$download\n\n" if ($DEBUG == 1);
# This is where we look through the HTML code and select the file type and
# video quality.
my @urls = split(',', $download);
OUTERLOOP:
foreach my $val (@urls) {
# print "\n$val\n\n";
if ( $val =~ /$fileType/ ) {
my @res = split(',', $resolution);
foreach my $ress (@res) {
if ( $val =~ /$ress/ ) {
print "\n\nGOOD\n\n" if ($DEBUG == 1);
print "$val\n" if ($DEBUG == 1);
$resFile = $ress;
$resFile = "sd640" if ( $ress =~ /itag=18/ );
$resFile = "mb144" if ( $ress =~ /itag=17/ );
$download = $val;
last OUTERLOOP;
}
}
}
}
## clean up the url by translating unicode and removing unwanted strings
$download =~ s/\:\ \"//;
$download =~ s/%3A/:/g;
$download =~ s/%2F/\//g;
$download =~ s/%3F/\?/g;
$download =~ s/%3D/\=/g;
$download =~ s/%252C/%2C/g;
$download =~ s/%26/\&/g;
$download =~ s/sig=/signature=/g;
$download =~ s/\u0026/\&/g;
$download =~ s/(type=[^&]+)//g;
$download =~ s/(fallback_host=[^&]+)//g;
$download =~ s/(quality=[^&]+)//g;
## collect the url and sig since the html page randomizes their order
my ($signature) = $download =~ /(signature=[^&]+)/;
my ($youtubeurl) = $download =~ /(http?:.+)/;
$youtubeurl =~ s/&signature.+$//;
## combine the url and sig in order
$download = "$youtubeurl\&$signature";
## a bit more cleanup as youtube
$download =~ s/&+/&/g;
$download =~ s/&itag=\d+&signature=/&signature=/g;
## combine file variables into the full file name
my $filename = "unknown";
if ( $resolutionFilename == 1 ) {
$filename = "$prefix$title\_$resFile.$fileType";
} else {
$filename = "$prefix$title.$fileType";
}
## Process check: Are we currently downloading this exact same video? Two of the
## same wget processes will overwrite themselves and corrupt the video.
my $running = `ps auwww | grep [w]get | grep -c "$filename"`;
print "\nNumber of the same wgets running: $running\n" if ($DEBUG == 1);
if ($running >= 1)
{
print "\nAlready downloading the same filename, exiting: $filename\n";
exit 0;
};
## Print the long, sanitized youtube url for testing and debugging
print "\n$download\n" if ($DEBUG == 1);
## print the file name of the video collected from the web page title for us to see on the cli
print "\n Download: $filename\n\n";
## Background the script. Use "ps" if you need to look for the process
## running or use "ls -al" to look at the file size and date.
fork and exit;
## Download the video
system("wget", "-Ncq", "-e", "convert-links=off", "--load-cookies", "/dev/null", "--tries=200", "--timeout=20", "--no-check-certificate", "$download", "-O", "$filename");
## Print the error code of wget
print " error code: $?\n" if ($DEBUG == 1);
## Exit Status: Check if the file exists and we received the correct error code
## from system call. If the download experienced any problems the script will run again and try
## continue the download till the file is downloaded.
if( $? == 0 && -e "$filename" && ! -z "$filename" )
{
print " Finished: $filename\n\n" if ($DEBUG == 1);
$retry = 0;
}
else
{
print STDERR "\n FAILED: $filename\n\n" if ($DEBUG == 1);
$retry = 1;
$retryCounter++;
sleep $retryCounter;
}
}
#### EOF #####
