Originally Posted by fr4nk1yn
hmmm... Same thing here.
How'd you change to mp4, I vagely remembber seeing something in the registry(?).
I simply changed *3G2 to *mp4 here:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Pictures\Cam era\OEM\MuxCLSID]
"VideoFileExt"="mp4"
and here (for resolution 176x144):
[HKEY_LOCAL_MACHINE\Software\Microsoft\Pictures\Cam era\OEM\VideoProfile\3\MuxCLSID]
"VideoFileExt"="mp4"
So I shoot now in *mp4. Here is the file's options:
Complete name 011.mp4
Format MPEG-4
Format profile 3GPP Media Release 4
Codec ID 3gp4
File size 235 KiB
Duration 15s 172ms
Overal bit rate 127 Kbps
Video
Format : MPEG-4 Visual
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warpoints
Format settings, Matrix : Default
Codec ID : 20
Duration : 15s 172ms
Bit rate mode : Variable
Bit rate : 107 Kbps
Width : 176 pixels
Height : 144 pixels
Display aspect ratio : 1.222
Frame rate mode : Variable
Frame rate : 15.753 fps
Minimum frame rate : 14.493 fps
Maximum frame rate : 17.544 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.269
Stream size : 199 KiB
Audio
Format : QCELP
Codec ID : E1
Duration : 14s 960ms
Bit rate mode : Constant
Bit rate : 14.0 Kbps
Channel(s) : 1 / 1 channel
Sampling rate : 8000 Hz
Resolution : 16 bits
Stream size : 25.6 KiB
Here there is the audio codec's options:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Pictures\Cam era\OEM\VideoProfile\3\AudioEncoderCLSID]
"IClass"="{5620ddfa-0d19-463a-ab46-e5d8ef6efd60}"
I guess if to change "IClass"="{5620ddfa-0d19-463a-ab46-e5d8ef6efd60}" into AMR or another "IClass" we would have *mp4 with AMR sound but not QCELP. But I don't know what "IClass" stands for AMR. Obviously {5620ddfa-0d19-463a-ab46-e5d8ef6efd60}" stands for QCELP.
Originally Posted by fr4nk1yn
hmmm... Same thing here.
I'm also interested in whether is actually changes the format or just the extension name.
mp4 is a container for mpeg-4 media. Inside we can have: audio (amr, aac, ac3), video (mpeg-4ASP, mpeg-4AVC, 3gp, 3g2 etc.) or both. Instead of mp4 U can use 3gp, 3G2 or any other format. But the container is the same - MP4.
The question is how to change QCELP into AMR like in most GSM phones.