In this site we compare several different video streming services. Main focus will be in live mobile video broadcasting.

Showing posts with label audioquality. Show all posts
Showing posts with label audioquality. Show all posts

January 3, 2010

First test with 4 mobile phones and 1 HD-cam

In this test we shot 4 different concurrent video streams and reference video to the tape. We used following setup:
Network connectionWi-Fi 10M
Video QualityBest
Audio QualityBest
Tested servicesBambuser and Qik
Test devices #1 Nokia N95, Bambuser v. 1.03(6)
#2 Nokia E71, QIK v. 1.0.25
#3 iPhone 3 GS 32G, QIK for 3 GS v. 4.32
#4 iPhone 3 GS 32G, Bambuser v. 1.6.7
Video Time line 00:00:30 Introductions
00:01:00 Services used
00:01:30 Test #1: News paper
00:01:55 Test #2: Nokia monitor test
00:02:15 Test #3: Wide angle test
00:02:45 Test #4: Audio sweep from 10Hz to 200Hz
00:03:35 Test #5: Audio, Music
00:04:20 Test #6: Low light, indoor
00:04:45 Test #7: Low light, outdoor

Bambuser

QIK for 3GS

iPhone

3 GS

Cam #4 / iPhone 3 GS, 3 mpix camera
Bandwidth used: 298 M (!)

Cam #3 / iPhone 3 GS, 3 mpix camera
Bandwidth used: 54 M



Nokia

Cam #1 / Nokia N95, 5 mpix camera
Bandwidth used: 53 M

Cam #2 / Nokia E71, 3 mpix camera
Bandwidth used: 76 M



Reference
Youtube HQ
Cam #0 / Sony HD video cam + YouTube

First thing you notice is a poor focus in both Nokia videos. Both Nokia devices has a real mechanical focus but it seems that neither Bambuser or QIK can use it. That's why image of both services is far more better when using iPhone.

Links: Audio sweep test (check your own speakers with this for reference)
Music: Electric Lady Band - Six-Pack Thanks Rene!