On Jan 21, 6:40 pm, gateway <[EMAIL PROTECTED]> wrote:
> I work on alot of video encoding and my first tests with the first
> iPhone that came out wouldnt load any 3gp files I encoded and to top
> it off 3gp is just a video container so its not clear exactly what
> video formats to put in it. Also with the ability to sort of stream
> via edge at a low bitrate mp4 or h264 file why the need for 3gp unless
> Apple plans to allow for rtsp streaming with hinted 3gp files soon ?
>
> thoughts?
>From the iPhone dev page:
- * -
Encode Video for Wi-Fi and EDGE
...
For QuickTime Pro v7.1.6 and earlier, use these exporters and
settings:
The Movie to MPEG-4 exporter with the following settings prepares
movies for Wi-Fi.
In the H.264 video options, make sure you restrict the encoder to use
the Baseline profile, and select "Faster encode (Single-pass)"
encoding in the Video Options dialog.
Video settings: 900 kbit/sec, H.264, 480 x 360; frame rate: current;
preserve aspect ratio using: Fit within size
Audio settings: 128 kbit, AAC-LC
.mp4 file
The Movie to 3G exporter with the following settings prepares movies
for EDGE.
Video settings: 64 kbit, H.264, 176 x 144; frame rate: 10 or 15;
preserve aspect ratio using: Letterbox or Crop
Audio settings: 16 kbit, AAC-LC
.3gp file
In each of the QuickTime Pro v7.1.6 and earlier exporters, turn off
streaming; iPhone does not stream media using RTP/RTSP.
- * -
And that's mostly it.
- ∞
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