Instruction: Answer the given question using the supporting document.

Input:
Question: How do you play-back *.AVI files recorded by camera?I find attached GSurf_Pro software too complicated.Win Media Player does not play this h264 compressed *.AVI files, codec vidsH264 is missing.
Document: I use BlueIris software and this camera works great with it. I am running the camera at 10fps and on my PC, it added about 5% to the cpu load.For $100, this is a great camera. I am going to buy a couple more for areas that don't need night vision.UPDATE 5/16/13: There is a focus ring that feels solid and easy to adjust. Just loosen a little screw under the lens and turn it.
Great image quality (this is not a night camera so the room must be lit), audio is very clear and loud. You will not find another camera with, POE, HD, a built in mic and speaker at this price. Comes with the power supply too, I didn't need it as I used poe, but its nice that they included it, most poe cameras do not.
This is not a bandwidth issue, I've tried it with it attached to a computer, through a cisco gigabit (full duplex) switch and it still acts the same. However like I said before the image quality is outstanding even on lower resolutions.
Overall i am very impressed at video quality at 720p i backed it down to 15 frames per sec just to save hard drive space and still looks great. I use one at night at my front door with a 60 watt equivlent CFL and picture looks great! They also give you the GSURF PRO software for free which is functional also. Nice thing about Grandstream is they make IP Phones too, so you can send video to your office phones.
Mic can pick up at very low levels.-Built in relay is cool/fun but would be very difficult to implement in a retrofit application. Still a "pro" as an option.-Built in smoke detector. That might I add is not UL listed so it cant replace household smokes. Also there is no visible  indicator that it is in "alarm" and there is no audible notification.
This is a NON IR camera. Meaning that when it is pitch black....you won't see anything. I tried this camera out a bar that wanted security cameras. The price was nice so I gave it a whirl.
Well not the case with these cameras. So sorry to say but I am very disappointed as its lot of work to remove/mount and pay for shipping and be without the camera for 10-15 days. I would recommend Dahua IPC-HDB3200C over this any day. Have had 4 of them for 8 months in the outdoors and they are built like a tank and have slightly better resolution.
If you have never had a PoE/network camera, then you may be pleased with its picture. I specifically bought this camera based on its image sensor of 2MP. Lets just say, I have installed 2MP cameras on light poles and can easily and clearly read a license plate from up to 180' away. This camera was an utter disappointment in terms of picture quality. The harness where you make all of your connections is VERY cumbersome.
I've purchased a couple camera products from Grandstream before and was impressed so I thought I'd give two more a try. I bought this one (GXV3611HD) and the low light non-hd version (GXV3611LL)Grandstream GXV3611_LL Fixed Dome Low Light IP Camera. In appearance, they look identical and can even share the mounting plates. They perform very different though.The picture on the LL is only 720x576 PAL but is nice and clear.
Full disclosure. I install IP cameras daily for various businesses in Texas. As such I know how to configure these cameras in my sleep. Setup was a breeze, updated to newest firmware. My IP Cam Viewer app accepts the stream and 2 way audio. Audio is very, very clear. I can assure you, this is the worst picture quality I have ever seen from a 2MP camera in my professional experience. I played with the colors/brightness/contrast and with different frame size/stream profiles.
Answer: You could try finding a codec for media player if you search around for one. The preferred (and easy) way is to use the AVI conversion tool in gsurf. Go to the "Manage tool" menu and select the AVI conversion tool from the list. On the AVI tool window, click the "Add" button and browse for the location where the h264 file(s) were saved at. Select the file(s) in the browser window and click the "Open" button to add the files to the list (to be converted to avi). At the bottom of the AVI tool window, select a location to save the converted file(s). Now click the "Start" button on AVI tool window and the process of converting the file(s) will begin. After it is finished, go to the location where you saved the converted file(s) and click on a converted file. Media player will now play the file. My advice towards gsurf in general is to keep trying with it. Its fairly powerful and it took some time for me to understand how to get the most from it. I still learn new things about it from time to time as well. If you need help with it, let me know and I can help out.