> Date: Mon, 30 Jan 2012 21:35:50 -0800
> Subject: [android-developers] Re: Encoder???
> From: [email protected]
> To: [email protected]
>
>
>
> On 30 Sty, 07:08, Muhammad UMER <[email protected]> wrote:
> > Hi pskink,
> >
> > In my case
> >
> > normal .3gp (written by my MediaRecorder) file header, for
> > instance:
> > # hexdump -C normal_file.3gp
> >
> > 00000000 0000001C66747970 3367703400000300 |....ftyp3gp4....|
> > 00000010 336770346D703431 3367703600090CFB |3gp4mp413gp6....|
> > 00000020 6D6461743C911716 BE6679E1E001E7AF |mdat<....fy.....|
> > .
> > .
>
> this is ok - the header is exactly the same like mine
>
> >
> > and i compare it to the file written by my server:
> > # hexdump -C server_file.3gp | less
> > 00000000 3030203030203030 2030302030302030 |................|
> > 00000010 3020303020303020 3030203030203030 |................|
> > 00000020 2030302030302030 3020303020303020 |................|
> > 00000030 3030203030203030 2030302030302030 |................|
> > 00000040 3020303020303020 3030203030203030 |................|
> > 00000050 2030302020202020 2020202020202020 |.. |
> > 00000060 2020202020202020 2020202020202020 | |
> > 00000070 2020086D64617420 2020202020202020 | .mdat |
> > 00000080 2020202020202020 2020202020202020 | |
> > 00000090 202020202020086D 646174202001B610 | .mdat...|
> > .
> > .
>
> this is WRONG: "mdat" sequence should start from the offset 0x20 and
> not 0x73
What can i do, to start mdat from offset 0x20?
>
> > .
> >
> > you said in previous discussion that i have to modify first 32 bytes
> > where i have to copy byts[0- 27] to the file.
>
> you have to copy first 28 bytes from normal_file to the first 28 bytes
> of server_file
Please can you pacify(highlight) these 28 bytes, that i have to copy?
>
> > 2) how to copy, Is it in the form of string?
>
> again, RandomAccessFile
>
> >
> > 3)and i don't understand about bytes [28..31]. where from the moov atom
> > starts. whatt is
> > paython?
>
> you have to find where the moov atom starts in your server_file, is it
> so difficult?
I don't know from where the moov atom start?
>
> pskink
>
umer
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