Explanation of YouTube FLV address

Explanation of YouTube FLV address

Http://kej.tw/flvretriever/

 

Flvdown. Sh for downloading FLV video from YouTube. You can see on the Internet that the FLV animation of YouTube can be downloaded through www.youtube.com/get_video.php, so you try to write a script to implement it: #!/bin/bash # # @Function: # download flv from www.youtube.com # # @HOW-TO: # E.G. # flvdown.sh http://www.youtube.com/watch?v=1eOu-jVuuxo # # @Author: # HenryFour # @Date: # 2008-01-08 # how_to() { echo "Usage:" echo " flvdown.sh youtube_video" echo "E.G. flvdown.sh http://www.youtube.com/watch?v=1eOu-jVuuxo" echo "" } downflv_exit() { EXIT_CODE=$1 tmp_file_name=$2 if [ -f "$tmp_file_name" ]; then rm -f "$tmp_file_name" fi exit $EXIT_CODE } WGET="/usr/bin/wget -c " downflv_main() { flvaddr=$1 #check whether it is youtube web address if !(echo $flvaddr | /bin/egrep -q 'www[1-7]?.youtube.com/watch"?v='); then echo "addr invalid: flvdown.sh can just download youtube vidow." exit 1 fi #get the video page down webfilename="${flvaddr#*watch?v=}.$(/bin/date '+%F-%s').tube4" if ! $WGET -O "$webfilename" "$flvaddr"; then echo "Failed to download page: $flvaddr" downflv_exit 1 "$webfilename" fi #get video info from the webfile video_title=$(/bin/grep '<title>.*</title>' "$webfilename" | sed 's/^"s*<title>"s*"([^"s]"+.*[^"s]"+")"s*<"/title>"s*$/"1/') video_id=$(/bin/grep 'fullscreen' "$webfilename" | sed 's/.*fullscreen?video_id="(.*");$/"1/') video_id=${video_id%"'} video_file_name="$video_title".flv if [ -f "video_file_name" ]; then video_file_name="$video_title"-$(/bin/date '+%F-%s').flv fi video_down_addr="http://www.youtube.com/get_video.php?video_id=$video_id" #download flv video if ! $WGET -O "$video_file_name" "$video_down_addr"; then echo 'Failed to download flv video' downflv_exit 1 "$webfilename" fi echo "download flv vedio: $video_file_name" downflv_exit 0 "$webfilename" } if [ $# -ne 1 ]; then how_to exit 1 else downflv_main $1 fi

 

 

Other

When I saw this shell script, I was thinking about another method of downloading YouTube.
The author of this shell script is also familiar with script and YouTube.

After reading his original shell script, I used the Linux wget to download a YouTube video.

The original shell script syntax is as follows:

#! /Bin/sh
# $ ID: Youtube. Sh 496 23: 37: 35z Berto $

If ["$ #"! = "1"]; then
Echo "YouTube video downloader"
Echo "written by Albert to Garcia <agarcia-at-igalia-com>"
Echo "homepage: http://people.igalia.com/berto"
Echo
Echo "Usage :"
Echo "YouTube. Sh http://www.youtube.com/watch? V = <video_id>"
Echo "or"
Echo "YouTube. Sh <video_id>"
Echo
Exit 64
Fi

Vid = $ (echo "$1" | sed "s/. * V =" ([^ &] * "). */" 1 /")
Url1 = "http://www.youtube.com/watch? V = $ vid"
Echo-n "getting $ url1 ..."
Param = "$ (wget-Q-o-" $ url1 "| grep watch_fullscreen | cut-d' & '-F 3 )"
Echo "done ."
Url2 = "http://www.youtube.com/get_video? Video_id = $ vid & $ Param"
Echo-n "getting $ url2 ..."
Url3 = "$ (wget-s" $ url2 "2> & 1 | sed-N/location:/S/. * http:/P )"
Echo "done ."

Echo "video address is $ url3"
Exec wget-o "$ vid. FLV" "$ url3"

Save the original website as YouTube. Sh.
Or