[Asterisk-video] H324M/3G video call recording quality

[Kalimutu Singh]

I have tried changing the framerate by modifying the value of qcifMPI in
H245Capabilities, but the framerate still couldn't be reduced from
~10FPS (Nokia C5) so I think it is like what you mentioned that the phones
does not honor the parameter. There is no way to set the framerate on the
phones I have seen so far.

On Mon, Aug 23, 2010 at 8:26 PM, Ram <rramani at gmail.com> wrote:

> Kalimutu,
>
> If the video from the phone is of bad quality, there's nothing much you can
> do. The quality of the video is dependent on the rate control algorithm and
> in the 3g TDM world with 64 kbps total BW available, you cannot expect super
> quality. One thing you probably can do is reduce the framerate,so that the
> more bits are allocated to a frame and better quality is produced. But I am
> not sure whether phones honor the framerate parameter during signaling. You
> can try, or try if you can set the framerate using the 3g phone settings.
>
> Ram.
>
>
>
>
> On Mon, Aug 23, 2010 at 12:10 AM, Kalimutu Singh <botachek at gmail.com>wrote:
>
>> I am using mp4save to record directly from a 3G phone. I thought H245
>> negotiation would always be required regardless of whether phone-to-phone or
>> phone-to-asterisk. Please enlighten me on how to establish video calls
>> without involving H245 nego in the case of phone-to-asterisk.
>>
>> Anyway, if both phones are same model, I think the quality might be better
>> since both would has same H245 capabilities. Unfortunately I do not have a
>> pair of same-model 3G phones to do such testing here. From my experience,
>> even for phone-to-phone video calls using phones of same brand(Nokia N73 +
>> Nokia C5), the quality is pretty bad too.
>>
>> Regards,
>> Kalimutu
>>
>> On Mon, Aug 23, 2010 at 1:03 AM, Dan Julius <dan.julius at gmail.com> wrote:
>>
>>> Why should phone 2 phone quality suffer while recording? This shouldn't
>>> require any transcoding.
>>>
>>> Dan
>>>
>>>  On Aug 22, 2010 4:35 PM, "Ram" <rramani at gmail.com> wrote:
>>>
>>> kalimutu,
>>>
>>> r u transcoding the video or it is a direct record from a 3g phone. If
>>> It's direct record, as Dan suggested, it depends on the encoding
>>> capabilities of each phone. If the encoding is hardware based, you can't do
>>> much. One other thing I've found is that whe I do phone to phone video
>>> calls, quality is great, but if you do the H.245 negotiation and try to
>>> record to your device, then quality suffers.
>>>
>>> Ram.
>>>
>>>  On Mon, Aug 16, 2010 at 1:00 AM, Kalimutu Singh <botachek at gmail.com>
>>> wrote:
>>>
>>>> >
>>>> > Hi all,
>>>> >
>>>> > I am exploring options on how to improve the H324M/3G video calls
>>>> recording qualit...
>>>>
>>>> > --
>>>> > _____________________________________________________________________
>>>> > -- Bandwidth and Colo...
>>>>
>>>
>>>
>>>
>>> --
>>> Ram
>>>
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>>
>>
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>
>
>
> --
> Ram
>
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