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MP4... please help

5 replies · 4,015 views · Started 15 September 2003

Guest 15 Sep 2003, 23:36

I've been trying to encode mp4 files to play on my A920 (using MPEGable)and I'm having no luck whatsoever. Every time the phone says it is unable to play the file.
Any help and advice on maybe different programs to use or what I'm doing wrong (ie. common mistakes) would be really appreciated.

Thanks,

A920Fan

thanatos 01 May 2004, 18:42

use quicktime - the full version to encode '3gpp'files - the a920 will play these. well mine does.

safe

jbatch 05 May 2004, 13:09

Quicktime is a tool of the mac and will leadeth you to the dark side 😮

To use mpegable properly you need to change the graphics and sound to settings work best with your phone.

try these settings for your a920

codec:h.231, 176x144, 150kbits a sec (200 seems nice to me as well)
audio: acc 96kbits (above this the audio does not sync when entering full screen mode on the phone.)

Also try lowering the frame rate to 12.5 or 12 (the a920 can support upto 15 but has difficulty with sync at fullscreen.)

Hope this helps 😃

Neko 27 May 2004, 14:04

first off, hi =) i recently got my A920 and am very happy with it. hopefully i can find some nice info and software here on the forums.

the MP4 thing; i wondered what they were too. i took the TeamMotorolaPrepares.mp4 video off the CD and had a look at it. here's what MPlayer has to say: it's definitely a quicktime file format, with some sort of "Major-Brand" tag of "3gp4. MOV track 0 was the audio stream, 16 bit 2 channel, and a fourcc tag of "mp4a" ... MOV track 1 was the video stream, image size 176x144 at 24bpp, display size 320x240, fourcc "mp4v", 20 fps.

if it's playing MPEG-4 video (and the documentation suggests it can), you might be able to just get away with shoving the mpeg4 video into a mov or qt file. it might even be able to play them from an .avi file format.

i'll do some testing and report back, but it'll have to wait until i buy a nice big memory card 😊 i want to re-encode some of my movie files to play them on my phone, too 😃

-Neko