Help needed. We are thinking on create a Video app for 7650. — Symbian C++

rachaerandio 19 Nov 2002, 10:08

Hello,

I'm trying to develop a video application such as T-mobile app. We are two people investigating on Symbian. We think we can develop such a Software. The trouble is that we are at the beginning an it seems unclear that we could have compressed video in mp4 format. The SDK provides:

There is a camera server class written in C++ that handles the camera, you can select the image quality, frames per second...

There is a video server class (everything written in C++) that handles the GUI.

There is an e-mail class that handles sending videos using the preconfigured e-mail accounts in the mobile.

So I think that we have everything to develope the application.

I just have one doubt, how to compress video in MP4 format. The 3GPP standard says that is mandatory to develop video in MP4 format. I don't know whether the Symbian handles the video in MP4 format or I must develop my own function to encode in such a format.

If someone knows how does it work I would be pleased. Of course everyone who can give any ideas or source code would be welcome.

Guest 19 Nov 2002, 10:11

Some things you should think about.

DO NOT PUT A FILE SIZE LIMIT IN YOUR APP!!! *g*

C'Ya

simeonbubblegum 19 Nov 2002, 11:21

Yeah, do not have a limitation for file size, but REMEMBER THEN TO CHECK AVAILABLE DISK SPACE BEFORE SAVING THE VIDEO TO FILE.

Ok, maybe that's enough of shouting. Yes, you have to write the MP4 encoding stuff yourself. There is not built in supports for that.

mamu 19 Nov 2002, 19:40

As said, you need to write the mpeg4-encoder yourself. That means thousands and thousands of lines of code. You also need stuff to put encoded video into mp4-fileformat.

I think there exists a reference encoder for mpeg4 from 3gpp, not sure about reference file format. Anyway, I think the reference encoder is way too slow for realtime encoding.