Was bored this afternoon and whipped this up. Its pretty self explanatory and will only work in IE. Run the python script and it will generate the macro.
Code:
#!/usr/bin/python
url = 'http://www.youtube.com/watch?v=zqx4E5tq1Bo' # URL of youtube video, must auto play on page load
length = '150' # Video length in seconds
proxies = ['ip:port', 'ip:port'] # List of proxies
f = open('macro.txt', 'a')
f.write('TAB T=1\n')
for proxy in proxies:
f.write('PROXY ADDRESS=' + proxy + '\n')
f.write('URL GOTO=' + url + '\n')
f.write('WAIT SECONDS' + length + '\n')
f.write('CLEAR' + '\n')
f.close()