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

Ram rramani at gmail.com
Sun Aug 22 08:27:30 CDT 2010


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
> quality. I have tried updating the libh324m/app_mp4/mpeg4ip/ffmpeg to the
> latest SVN revision but there seems to be no improvement. Another way I have
> tried to improve the video quality is to change the video bitrate (from
> 52kbps H263+12.2kbps AMR to 60kbps H263+4kbps AMR) in H245Capabilities but
> there isn't much significant improvement on video quality eventhough audio
> quality is lowered.
>
> Just wondering if anyone can suggest any solution/findings on this
> recording video quality issue?  I have also uploaded a recorded sample to
> http://www.sendspace.com/file/lvwon0 in case if it is useful for
> comparion/benchmark purpose. Thank you.
>
> Regards,
> Kalimutu
>
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-- 
Ram
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