No sound on mp4 videos?

Archived from groups: alt.cellular.motorola (More info?)

If I upload an mp4 video to my phone it plays well but without sound.

I was quite pleased with the way I could get an mpg from my digital camera and set it up
to play full width on my V550's 176 width screen. Using mPT to convert it to a 176 width
mpeg4 instead of to a 3gp where mPT seems to force a default 128 width.

Any ideas as to how I get sound? (I hear sound when I play the mp4 on my PC)

I have been going:

Digital Camera mpg to avi in Virtual Dub then avi to mp4 in MPT

Pat.

(I am wondering if I should buy mPT or not - hence all the questions!)

Archived from groups: alt.cellular.motorola (More info?)

Can I somehow change the audio stream to AMR ( It seems to be "mp4a" while the 3gps
produced are "samr" )
I am presuming that mPT sets it to mp4a irrespective of the avi interleaving used so I
would need to re-encode mPT's mp4 output.
I am a little out of my depth here...
Pat.

"Steve" <nr4p@NOJUNKearthlink.net> wrote in message
newslZHd.2557$rp1.1617@newsread3.news.atl.earthlink.net...
> The audio has to be coded as AMR for it to play on the phone.
>
> --
> Steve
> "Pat" <pat@usenet-only.com> wrote in message
> news:41f05938$0$70529$ed2619ec@ptn-nntp-reader03.plus.net...
>> If I upload an mp4 video to my phone it plays well but without sound.
>>
>> I was quite pleased with the way I could get an mpg from my digital camera and set it
>> up to play full width on my V550's 176 width screen. Using mPT to convert it to a 176
>> width mpeg4 instead of to a 3gp where mPT seems to force a default 128 width.
>>
>> Any ideas as to how I get sound? (I hear sound when I play the mp4 on my PC)
>>
>> I have been going:
>>
>> Digital Camera mpg to avi in Virtual Dub then avi to mp4 in MPT
>>
>> Pat.
>>
>> (I am wondering if I should buy mPT or not - hence all the questions!)
>
>