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Aspect Ratio Video Playback???


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I have tons of mpeg music videos i think in 320/240 format. It looks fine on the home computer since i can maximize the window to full screen and the picture is still clean with everything in proper motion. Now ive converted these files to .wmv files to play on my avic-f90bt unit. They play just fine but they are about half the size of the screen during playback. Is there anyway to make the music videos full screen on the unit? What aspect ratio or resolution would i have to change my files to for them to be full screen? I re-formated one video at 800x480 resolution since that is what the device is but the playback sucks and is only about 3/4 of the screen if that. Anyone know a good free program to convert my small sized mpeg videos to any video format that will work on this device at full screen and clean? Thanks!

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Anyone? I have wmv music videos in original 320x240 format im pretty sure. Now how would i convert these to have them full screen without the player lagging the playback on my avic-f90bt device? I store them on my 8gb sd card so they play off that. Any ideas please? I have over 50 music videos and would be awesome if i could simply get them to play full screen on my device with original quality and no lag. When i play them original now its crystal clear and no lag but the picture is half the size of the screen's device if that! Thank you

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  • 4 weeks later...

I'm wondering the samething myself. Have you found out yet? I've got a couple of full movies on my iphone 3g and when I watch them on my x910bt they have two huge bars on the top and bottom of the picture. The picture looks great but why do those bars have to be so freaking huge. Anyway to fill in the gaps or at least minimize the black bars?

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Dude, continued my search after posting on here and found some good info about using handbrake and resolution size. I'm going to give it a try tonight. After filtering out all the crap this is the best info I found.

 

"1) Use Handbrake in H.264 Mode to Encode.

2) Do not encode at 640x480 (Your AVIC screen is not 4:3 its widescreen)

3) Encode at whatever the maximum output resolution is for your device.

a) If iTouch / iPhone then 480x320 or 480x272

4) In any case, set your iPod to widescreen mode in iPod settings.

5) Set AVIC to "Full Mode" when displaying video.

 

Much better, we now have some direction here. Now for the answers:

 

1) Yes, H.264 is the best codec to do this

2) You do want to encode at a horizontal scan of 640, Handbrake will adjust the vert lines accordingly and will maintain your source aspect ratio.

The AVIC is neither 4:3 nor is it a widescreen. It is a computer resolution of 800x480, which makes things tricky.

3) Encode at the native res, or as close to, of the intended display device. In this case the intended display device is the AVIC. Higherst allowable res, ie 640x?? where ?? doesnt exceed 480 is going to get you the best picture on the AVIC

4&5) Since the AVIC is not a true widescreen (16x9) which the iPod would encode for, you can try whatever you like here.

 

 

Only thing i'd ad is, per the graph that you posted, the maximum TV output of the iPhone/iTouch is 480x320 so on those devices it wouldnt do you any good to waste file space by encoding at 640, because the tv output on the device maxes out @ 480 lines. If you have a 4:3 iPod like a regular iPod video then 640 horizontal will work and then the only thing your worrying about is maintaining correct aspect.

 

Regardless of iPod variation setting Widescreen in the iPod settings menu is the correct option."

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