Samsung M8800 Pixon DivX playback
When converting, what should I put for the settings for smooth playback on the Pixon? I tried Home Theater settings but playback isn't so smooth on it.
need help vista would not save the actavtion file to c drive program lock up and closed need to redownload the files please help some one
There is no need to register your Pixon using an activation file. Like the Omnia, there are no DivX Mobile VOD titles available for the Pixon. Please see: http://labs.divx.com/node/7204
The user manual of the phone said it could support DivX video's of up to 720x480. Is there a way to manually change the settings?
The Pixon is not a "Home Theater" device. Use the "Mobile" profile setting to ensure the best playback on your phone.
A DivX "Home Theater" device is typically a DVD player.
I find the Mobile setting too bad quality as it reduces the resolution to smaller than the phones screen, so when you view it full screen it's all pixelated like a you tube video.
I can play a full resolution 720x336 video .avi with AC3 5.1 audio on the Pixon and it plays fine, smooth all the way through. Then try another divx avi file of a lower resolution (624x352) and stereo MP3 audio and it won't play smoothly. As there are so many variables in an avi what's the best encoding, bit rate, resolution, frame rate, audio type? And NOT Mobile setting, that's just too bad quality and a waste of resolution detail.
The DivX Mobile profile looks like this:
MPEG4 Simple Profile
B-VOP: Not Allowed
PAR: 1:1
QPel: Not Allowed
GMC: Not Allowed
Interlaced: Not Allowed
VBV Max Size: 655360
VBV Max Bitrate: 600000
Width: 320
Height: 240
The Pixon may be more capable but it is not tested beyond those specs. You might want to try the Home Theater profile, but that is probably beyond the capability of the Pixon.
The parameters you are comparing are the resolution and audio codec (e.g. 720x336 AC3 vs 624x352 MP3). There are several other important factors to consider for smooth playback. Specifically, what VBV model is used during encoding? Your VGA resolution video might require very high bitrates during challenging scenes.
If you would like to test the limits of the Pixon's capabilities, I would recommend starting with a high quality, high resolution video that includes challenging scenes of high-motion panning. Create several test files. You can use 720x480 resolution since you know the Pixon supports that, but you should gradually increase the VBV parameters until the Pixon visibly stutters during playback. You should also try encoding with and without B-VOB frames.
You'll find the ideal VBV Size to lie between 655360 and 3145728. The VBV bitrate should be between 600000 and 4854000. You'll need to use software like VirtualDub which allows you to access the Command Line Interface for the DivX Encoder so you can adjust these parameters.
For example, I find the LG Viewty works well at 640x480 with these CLI options:
-bvn1 1300000 -vbv 2000000,1310720,1310720 -w -b 0 -windowed_fullsearch=2 -quantization=2 -enhance_texture=1
Thanks for the reply. I've asked Samsung the same but they are no help at all. That certainly gives me lots of detail and things to test!
I tried an application "Auto Gordian Knot" and if i encode to Xvid ISO MPEG 4 settings, most of the encoded files play fine. It's a simple application so I don't know what any of the details of the encoding are but it works. No need to reduce resolution etc.
But your method seems a good way to find the best encoding parameters to suit the Pixon capabilities. I'll give it try when I've got the spare time!
Can you recommend a good application/utlity which will show all the properties of an .avi? Including all the values mentioned in your post?
To analyze videos, I often use G-Spot from http://www.headbands.com/gspot/ but that won't test the VBV parameters for you.
Thanks, Yes i've got Gspot already. I'll check it out.
If you still have trouble, try this version of Converter for Mobile: http://download.divx.com/mobile/win/DivXInstaller.exe
You can select either Mobile or 400x240 for optimum playback.