Increase maximum results from 1 until you want to, but be careful, they don’t advise grabbing too much in one call and limit you to 50 ( https://developers.google.com/youtube/2.0/developers_guide_protocol_api_query_parameters ).
Instead, you might consider capturing data in 25 packets, say by changing the starting index, until you return.
EDIT: ,
import urllib, json
author = 'Youtube_Username'
foundAll = False
ind = 1
videos = []
while not foundAll:
inp = urllib.urlopen(r'http://gdata.youtube.com/feeds/api/videos?start-index={0}&max-results=50&alt=json&orderby=published&author={1}'.format( ind, author ) )
try:
resp = json.load(inp)
inp.close()
returnedVideos = resp['feed']['entry']
for video in returnedVideos:
videos.append( video )
ind += 50
print len( videos )
if ( len( returnedVideos ) < 50 ):
foundAll = True
except:
print "error"
foundAll = True
for video in videos:
print video['title']
print video['link'][0]['href']