There is a problem coding video with ffmpeg, it's not easy
(I was going to
say that it's impossible, but is just that i still have not
found the
correct answer) to encode a video file with a constant bit
rate. If you dump
the stat of your coding you'll see that intra frames are
much bigger than
the should be.
So they video frames are enqueued on the stack and the
resulting framerate
is very variable on the 3G phone. Perhaps N95 complains
about it.
Try enconding it at a much lower bitrate to see if you can
meak it work, and
also using QT Pro for encoding (the quality is worst but it
complains with
the bandwith)
I don't have a N95 availabe, so it would be great if you
send me the logs
and dumps of it.
Greetings
Sergio
----- Original Message -----
From: "René van Weert" <rvweert gmail.com>
To: "'Development discussion of video media support in
Asterisk'"
<asterisk-videolists.digium.com>
Sent: Friday, May 04, 2007 7:50 PM
Subject: RE: [Asterisk-video] nokia n95 h324m calls
Dear Francesco,
The video indeed has good quality on other handsets (also
the audio, which
is good in both cases - N95 and N80).
I attached an mp4 file for you. I used the following to
generate it with
ffmpeg:
ffmpeg -y -i intro.avi -ab 12.2k -ac 1 -acodec amr_nb -ar
8000 -vcodec
h263 -r 10 -s qcif -b 44K -pass 1 -passlogfile log
/usr/videodemo/intro.mp4
ffmpeg -y -i intro.avi -ab 12.2k -ac 1 -acodec amr_nb -ar
8000 -vcodec
h263 -r 10 -s qcif -b 44K -pass 2 -passlogfile log
/usr/videodemo/intro.mp4
Ciao,
Rene
-----Oorspronkelijk bericht-----
Van: asterisk-video-bounceslists.digium.com
[mailto:asterisk-video-bounceslists.digium.com] Namens
francesco
Verzonden: vrijdag 4 mei 2007 19:06
Aan: Development discussion of video media support in
Asterisk
Onderwerp: RE: [Asterisk-video] nokia n95 h324m calls
Hi,
I gave a look to H223 dumps.
N95 sends again and again an indication never seen before on
other
handysets. And for sure libh324m doesn't do nothing when
receives it.
At a first sight it seems to me that it is complaining about
too slow
frame rate...
If you confirm me that the same video has good quality on
other
handysets, I think this is the starting point for
investigation.
Anyway...could you send an mp4 file you are using?
Greetings
Francesco
On Fri, 2007-05-04 at 16:50 +0200, René van Weert wrote:
> Hi,
>
> Tried that, same result, video is crappy.. Also like I
mentioned, on other
> phones the result is quite good. Here is mp4info:
> mp4info version 1.5.0.1
> /usr/videodemo/dest2.mp4:
> Track Type Info
> 1 video H.263, 93.100 secs, 44 kbps, 176x144
10.000000 fps
> 2 hint Payload H263-2000 for track 1
> Metadata Tool: mp4creator 1.5.19
>
> Cheers,
>
> RvW
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] Namens
Emmanuel Fauvet
> Verzonden: vrijdag 4 mei 2007 16:16
> Aan: 'Development discussion of video media support in
Asterisk'
> Onderwerp: RE: [Asterisk-video] nokia n95 h324m calls
>
> Audio has a bitrate at 13Kps
> Perhaps these is the problem
> Try without audio, and with audio at 11Kbps and let us
know
> Greetings
>
>
>
> -----Message d'origine-----
> De : asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] De la
part de René van
> Weert
> Envoyé : vendredi 4 mai 2007 15:42
> À : 'Development discussion of video media support in
Asterisk'
> Objet : RE: [Asterisk-video] nokia n95 h324m calls
>
> Here you go,
>
> mp4info version 1.5.0.1
> intro.mp4:
> Track Type Info
> 1 video H.263, 20.000 secs, 43 kbps, 176x144
10.000000 fps
> 2 audio AMR, 19.980 secs, 13 kbps, 8000 Hz
> 3 hint Payload H263-2000 for track 1
> 4 hint Payload AMR for track 2
> Metadata Tool: mp4creator 1.5.19
>
> Cheers,
>
> RvW
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] Namens
Emmanuel Fauvet
> Verzonden: vrijdag 4 mei 2007 15:22
> Aan: 'Development discussion of video media support in
Asterisk'
> Onderwerp: RE: [Asterisk-video] nokia n95 h324m calls
>
> Hi
> Could you give mp4info of the file please
>
> Greetings
> E.FAUVET
>
>
> -----Message d'origine-----
> De : asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] De la
part de René van
> Weert
> Envoyé : vendredi 4 mai 2007 12:31
> À : 'Development discussion of video media support in
Asterisk'
> Objet : [Asterisk-video] nokia n95 h324m calls
>
> Hi,
>
> I just got a Nokia N95 and now the video is not working
anymore with
> mp4_play. With my N80 everything worked fine, also the
audio with the
latest
> code.
> Does anybody have a clue what could be the reason that
the video is not
> working anymore right now with the N95? Could it
perhaps be an encoding
> matter?
>
> Cheers,
>
> Rene van Weert
>
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--
Francesco Emmi
A-Tono
Largo Paisiello, 5 - 95124 Catania
Tel.: (+39) 095.7365312
http: www.a-tono.com
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