Created
December 11, 2011 23:42
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| #include "librtmp/rtmp.h" | |
| #include "stdio.h" | |
| #define BUFSIZE 4096 | |
| int main(int argc, char **argv) { | |
| char buf[BUFSIZE]; | |
| FILE *fp; | |
| RTMP *rtmp; | |
| // initialize rtmp object | |
| rtmp = RTMP_Alloc(); | |
| if (rtmp == NULL) { | |
| printf("failed RTMP_Alloc\n"); | |
| return 1; | |
| } | |
| RTMP_Init(rtmp); | |
| RTMP_SetupURL(rtmp, "rtmp://nleca04.live.nicovideo.jp:1935/liveedge/ts_00 swfUrl=http://live.nicovideo.jp/liveplayer.swf?20100531 conn=S:14101621:lv73915381:0:1323650469:cafdd4a4e0a50046 flashVer=MAC 10,0,32,18"); | |
| if (!RTMP_Connect(rtmp, NULL)) { | |
| printf("failed to establish RTMP connection\n"); | |
| return 1; | |
| } | |
| if (!RTMP_ConnectStream(rtmp, 0)) { | |
| printf("failed to establish RTMP session\n"); | |
| return 1; | |
| } | |
| // open file | |
| fp = fopen("tmp.flv", "w+"); | |
| if (fp == NULL) { | |
| printf("failed to open file\n"); | |
| return 1; | |
| } | |
| // read stream and save to file | |
| int total; | |
| while (1) { | |
| total = RTMP_Read(rtmp, buf, BUFSIZE); | |
| if (total < 0) break; // success | |
| if (fwrite(buf, total, 1, fp) != total) { | |
| printf("failed to write to file\n"); | |
| break; | |
| } | |
| } | |
| // finalize | |
| fclose(fp); | |
| free(buf); | |
| RTMP_Close(rtmp); | |
| RTMP_Free(rtmp); | |
| return 1; | |
| } |
使い方
まずニコニコ動画にログインしてセッションIDを取得
curl -k -D /dev/stdout -d mail=ほにゃらら -d password=ほにゃらら https://secure.nicovideo.jp/secure/login
次に、セッションIDをcookieとしてXMLを取得
curl -b user_session=user_session_ほにゃらら 'http://watch.live.nicovideo.jp/api/getplayerstatus?v=lvほにゃらら' -o tmp.xml
XMLから動画のURLとチケットを取得。
cat tmp.xml | sed 's/.*<quesheet>\(.*\)<\/quesheet>.*/\1/'
cat tmp.xml | sed 's/.*<ticket>\(.*\)<\/ticket>.*/\1/'
URLは例えば
rtmp://nlpoca02.live.nicovideo.jp:1935/fileorigin/ts_00,/content/20111211/lv73915381_094151546000_2_aa79cc.f4v?1323769877:30:52ae97da8354004f
みたいな感じなので、これの",/content"というところを"/mp4:content"に変える。最後にrtmpsaveを使う。
./rtmpsave "ユーアールエル" "チケット"
みたいな感じ。
↑をするためのRubyスクリプト
#!/usr/bin/env ruby
email = ""
password = ""
if ARGV.length < 1
puts "usage: ruby rtmvsave.rb lv******** [cookie]"
exit 1
end
cookie = nil
if ARGV.length == 2
cookie = ARGV[1]
else
cookie = nil
header = `curl -k -D /dev/stdout -d mail=#{email} -d password=#{password} https://secure.nicovideo.jp/secure/login`
if header =~ /(user_session=user_session_.*?);/
cookie = $1
end
end
exit 1 if cookie == nil
xml = `curl -b #{cookie} 'http://watch.live.nicovideo.jp/api/getplayerstatus?v=#{ARGV[0]}'`
url = nil
ticket = nil
if xml =~ /<que.*?(rtmp:\/\/.*?)<\/que>/
url = $1.sub(",/content", "/mp4:content")
end
if xml =~ /<ticket>(.*?)<\/ticket>/
ticket = $1
end
exit 1 if url == nil or ticket == nil
command = "./rtmpsave '#{url}' '#{ticket}'"
puts "running command:\n #{command}"
system(command)使い方は、メールとパスワードを入力して
ruby rtmvsave.rb lv********
と実行。
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コンパイル手順
MacPortsでrtmpdumpをインストールしてたら、
これでまずlibrtmpをコンパイルし、librtmp.aを作る。次に、
これでrtmpsave（実行ファイル）を作る。