|
List Info
Thread: RE: aac audio
|
|
| RE: aac audio |
 
Netherlands |
2007-04-16 09:05:52 |
DEAR FRANCESCO,
I COULD ALSO BE THAT YOU HAVE BETTER/FASTER HARDWARE THAN I
DO. I AM RUNNING ON A P4 1.8GHZ WITH 512MB RAM. THIS MIGHT
BE TOO LOW AT THE MOMENT TO PROCESS THE INCOMING VIDEO AND
THEREFORE CAUSE IN MY CASE THE AUDIO TO SOUND CORRUPTED. ON
WHAT SYSTEM ARE YOU RUNNING?
WITH KIND REGARDS,
RENé
-----OORSPRONKELIJK BERICHT-----
VAN: ASTERISK-VIDEO-BOUNCES LISTS.DIGIUM.COM
[MAILTO:ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM] NAMENS
FRANCESCO
VERZONDEN: MAANDAG 16 APRIL 2007 11:06
AAN: DEVELOPMENT DISCUSSION OF VIDEO MEDIA SUPPORT IN
ASTERISK
ONDERWERP: RE: [ASTERISK-VIDEO] AAC AUDIO
HI RENè,
I' VE TRIED TO SWITCH OFF SENDING AUDIO AND VIDEO, BUT I
EXPERIENCED
ONLY A VERY FEW IMPROVEMENT OF QUALITY. QUITE FAR FROM THAT
OF OTHER
HANDYSET (E.G. SAMSUNG).
MORE OVER, IF MEAN PROBLEM WERE CPU LOAD DUE TO INPUT VIDEO
AND AUDIO,
PROBABLY WE WOULD EXPERIENCE SAME RESULT ON EVERY HANDSET
AND NO ONLY ON
NOKIA.
FOR SURE OPTIMIZATION IS A GOOD CHOICE BUT TO SOLVE
DEFINITELY AUDIO
PROBLEM MY OPINION IS THAT WE MUST INVESTIGATE ON OTHER
STUFFES
FRANCESCO
ON SUN, 2007-04-15 AT 12:18 +0200, RENé VAN WEERT WROTE:
> HI,
>
> I SEE INDEED THAT THE CPU LOAD GOES WAY DOWN IF I
SWITCH OFF SENDING AUDIO/VIDEO ON THE MOBILE. ISN'T THERE A
WAY TO DISABLE THE PROCESSING OF THIS INCOMING AUDIO/VIDEO
ON ASTERISK?
>
> GREETINGS,
>
> RVW
>
> -----OORSPRONKELIJK BERICHT-----
> VAN: ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM
[MAILTO:ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM] NAMENS
SERGIO GARCIA MURILLO
> VERZONDEN: VRIJDAG 13 APRIL 2007 1:59
> AAN: DEVELOPMENT DISCUSSION OF VIDEO MEDIA SUPPORT IN
ASTERISK
> ONDERWERP: RE: [ASTERISK-VIDEO] AAC AUDIO
>
> PROBABLY, WHEN TURNING OFF AUDIO AND VIDEO ON NOKIA,
LESS PROCESSING IS
> NEEDED SO YOU GET LESS LAGG.
> I THINK IT'S TIME FOR OPTIMIZATION.. 
>
> GREETINGS
> SERGIO
>
> ----- ORIGINAL MESSAGE -----
> FROM: "RENé VAN WEERT" <RVWEERTGMAIL.COM>
> TO: "'DEVELOPMENT DISCUSSION OF VIDEO MEDIA
SUPPORT IN ASTERISK'"
> <ASTERISK-VIDEOLISTS.DIGIUM.COM>
> SENT: THURSDAY, APRIL 12, 2007 8:39 PM
> SUBJECT: RE: [ASTERISK-VIDEO] AAC AUDIO
>
>
> HI FRANCESCO AND SERGIO,
>
> THANK YOU BOTH FOR THE ADVICE. I TRIED NOW WITH AUDIO
AT 12K AND VIDEO AT
> 50K. I ALSO RECOMPILED WITH -O3. ON OTHER PHONES THE
SOUND IS BETTER ALREADY
> BUT ON MY NOKIA N80 IT STILL IS A LITTLE BLURRY. FF I
TURN OF SENDING VIDEO
> AND AUDIO FROM THE PHONE HOWEVER THE INCOMING AUDIO
QUALITY IMPROVES QUITE A
> LOT. MIGHT THIS BE SOMETHING RELATED TO THE PROBLEM?
>
> WITH KIND REGARDS,
>
> RENé
>
> -----OORSPRONKELIJK BERICHT-----
> VAN: ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM
> [MAILTO:ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM] NAMENS
FRANCESCO
> VERZONDEN: DONDERDAG 12 APRIL 2007 9:59
> AAN: DEVELOPMENT DISCUSSION OF VIDEO MEDIA SUPPORT IN
ASTERISK
> ONDERWERP: RE: [ASTERISK-VIDEO] AAC AUDIO
>
> HI RENè,
>
> TRY TO HINT AUDIO TRACK INDICATING ALSO PAYLOAD SIZE:
>
> MP4CREATOR --HINT=2 -MTU=64 DEST.MP4
>
> I SUGGEST YOU ALSO TO FOLLOW SERGIO TIP TO COMPILE WITH
-O3 OPTION. YOU
> MAY ALSO USE AMR MODE 8, WITH FFMPEG OPTION -AB
12K...LOWERING BIT RATE
> DOESN'T GIVE ME ANY RESULT, SO I DON' T THINK IT IS A
GOOD CHOICE.
>
> QUALITY SHOULD BE MUCH BETTER. BUT STILL NOT GOOD IN
NOKIA N80 AS IN
> OTHER HANDSET.
>
> I'M WORKING ON IT AND LET YOU KNOW AS SOON AS I HAVE
NEWS.
>
> GREETINGS
> FRANCESCO
>
> ON WED, 2007-04-11 AT 19:03 +0200, RENé VAN WEERT
WROTE:
> > HI,
> >
> > I MISTAKENLY USED AAC INDEED. I AM NOW BACK TO
AMR-NB WHICH IS WORKING,
> BUT
> > NOT 100% CORRECT.
> > I PUT UP A SOUND SAMPLE OF HOW IT SOUNDS ON MY
NOKIA N80 HERE:
> >
HTTP://WWW.DIGITALINTERACTION.NL/DOWNLOADS/AUDIOSAMPLE.MP3
> >
> > IS IT BECAUSE THERE IS STILL SOME WORK TO DO OR
BECAUSE I AM DOING
> SOMETHING
> > WRONG THE AUDIO SOUNDS SO WRONG?
> >
> > I HAVE USED FFMPEG TO CONVERT MY MEDIA FILE AS
FOLLOWS:
> > FFMPEG -I WONING2.WMV -AB 7.4K -AC 1 -ACODEC
AMR_NB -AR 8000 -VCODEC
> H263 -R
> > 10 -S QCIF -B 46K -PASS 1 -PASSLOGFILE LOG
DEST.MP4
> > FFMPEG -I WONING2.WMV -AB 7.4K -AC 1 -ACODEC
AMR_NB -AR 8000 -VCODEC
> H263 -R
> > 10 -S QCIF -B 46K -PASS 2 -PASSLOGFILE LOG
DEST.MP4
> >
> > MP4CREATOR --HINT=1 DEST.MP4
> > MP4CREATOR --HINT=2 DEST.MP4
> >
> > THE DESTINATION FILE IS AVAILABLE HERE:
> >
HTTP://WWW.DIGITALINTERACTION.NL/DOWNLOADS/DEST.MP4
> > MP4INFO GIVES:
> > TRACK TYPE INFO
> > 1 VIDEO H.263, 77.500 SECS, 44 KBPS,
176X144 10.000000 FPS
> > 2 AUDIO AMR, 78.240 SECS, 8 KBPS, 8000 HZ
> > 3 HINT PAYLOAD H263-2000 FOR TRACK 1
> > 4 HINT PAYLOAD AMR FOR TRACK 2
> >
> > THE AUDIO DOES SOUND CORRECT WHEN PLAYED BACK ON A
PC.
> > I ALSO TRIED WITH LOWER BITRATES FOR BOTH AUDIO
AND VIDEO BUT WITHOUT
> > RESULT.
> >
> > ANY CLUES IN WHAT I'M DOING WRONG?
> > THANKS IN ADVANCE.
> >
> > RENé
> >
> > -----OORSPRONKELIJK BERICHT-----
> > VAN: ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM
> > [MAILTO:ASTERISK-VIDEO-BOUNCESLISTS.DIGIUM.COM] NAMENS SERGIO GARCIA
> > MURILLO
> > VERZONDEN: DONDERDAG 5 APRIL 2007 12:48
> > AAN: DEVELOPMENT DISCUSSION OF VIDEO MEDIA SUPPORT
IN ASTERISK
> > ONDERWERP: RE: [ASTERISK-VIDEO] AAC AUDIO
> >
> > HI
> >
> > WHY DO YOU NEED TO USE AAC?
> > YOU SHOULD USE ONE OF THE CODECS SUPPORTED BY
ASTERISK, CURRENTLY YOU CAN
> > USE PMCU OR GSM-AMR (FOR USING IT WITH
APP_H324M).
> > I ADDED AN APPLICATION A FEW DAYS AGO FOR CREATING
AN MPR4 FILE FROM A
> PCMU
> > FILE, YOU CAN FIND IT HERE:
> >
> >
HTTP://SIP.FONTVENTA.COM/SVN/ASTERISK/TOOLS/PCM2MP4.CPP
> >
> > GREETINGS
> > SERGIO
> >
> > ----- ORIGINAL MESSAGE -----
> > FROM: "RENé VAN WEERT" <RVWEERTGMAIL.COM>
> > TO: "'DEVELOPMENT DISCUSSION OF VIDEO MEDIA
SUPPORT IN ASTERISK'"
> > <ASTERISK-VIDEOLISTS.DIGIUM.COM>
> > SENT: THURSDAY, APRIL 05, 2007 12:17 AM
> > SUBJECT: [ASTERISK-VIDEO] AAC AUDIO
> >
> >
> > HI EVERYONE,
> >
> > I'M USING APP_MP4 RIGHT NOW AND IT IS WORKING
GREAT. THE ONLY PROBLEM I
> HAVE
> > IS THAT I CANNOT GENERATE 8000HZ AAC AUDIO WITH MY
FFMPEG. I TRIED ALSO
> > SEVERAL DIFFERENT (PRECOMPILED) VERSIONS BUT
WITHOUT ANY LUCK. FFMPEG ONLY
> > ACCEPTS 11025HZ OR HIGHER. IS THERE ANY OTHER WAY
TO CREATE THE AUDIO FOR
> > THE MP4 FILE?
> >
> > WITH KIND REGARDS,
> >
> > RENé VAN WEERT
> >
> > _______________________________________________
> > --BANDWIDTH AND COLOCATION PROVIDED BY
EASYNEWS.COM --
> >
> > ASTERISK-VIDEO MAILING LIST
> > TO UNSUBSCRIBE OR UPDATE OPTIONS VISIT:
> >
HTTP://LISTS.DIGIUM.COM/MAILMAN/LISTINFO/ASTERISK-VIDEO
> >
> > _______________________________________________
> > --BANDWIDTH AND COLOCATION PROVIDED BY
EASYNEWS.COM --
> >
> > ASTERISK-VIDEO MAILING LIST
> > TO UNSUBSCRIBE OR UPDATE OPTIONS VISIT:
> >
HTTP://LISTS.DIGIUM.COM/MAILMAN/LISTINFO/ASTERISK-VIDEO
> >
> > _______________________________________________
> > --BANDWIDTH AND COLOCATION PROVIDED BY
EASYNEWS.COM --
> >
> > ASTERISK-VIDEO MAILING LIST
> > TO UNSUBSCRIBE OR UPDATE OPTIONS VISIT:
> >
HTTP://LISTS.DIGIUM.COM/MAILMAN/LISTINFO/ASTERISK-VIDEO
--
FRANCESCO EMMI
A-TONO
LARGO PAISIELLO, 5 - 95124 CATANIA
TEL.: (+39) 095.7365312
HTTP: WWW.A-TONO.COM
INFORMATION IN THIS EMAIL IS CONFIDENTIAL AND MAY BE
PRIVILEGED. IT IS
INTENDED FOR THE ADDRESSES ONLY. IF YOU HAVE RECEIVED IT IN
ERROR,
PLEASE NOTIFY THE SENDER IMMEDIATELY AND DELETE IT FROM YOUR
SYSTEM. YOU
SHOULD NOT OTHERWISE COPY IT, RETRANSMIT IT OR USE OR
DISCLOSE ITS
CONTENT TO ANYONE.
THANK YOU FOR YOUR CO-OPERATION.
_______________________________________________
--BANDWIDTH AND COLOCATION PROVIDED BY EASYNEWS.COM --
ASTERISK-VIDEO MAILING LIST
TO UNSUBSCRIBE OR UPDATE OPTIONS VISIT:
HTTP://LISTS.DIGIUM.COM/MAILMAN/LISTINFO/ASTERISK-VIDEO
_______________________________________________
--BANDWIDTH AND COLOCATION PROVIDED BY EASYNEWS.COM --
ASTERISK-VIDEO MAILING LIST
TO UNSUBSCRIBE OR UPDATE OPTIONS VISIT:
HTTP://LISTS.DIGIUM.COM/MAILMAN/LISTINFO/ASTERISK-VIDEO
|
|
| Re: aac audio |
 
Spain |
2007-04-16 19:12:15 |
I've just updated the svn with a new version.
I've implemented a simple jitter buffer for the audio
channel. Now it won't
start muxing audio until it get a minimun size on the
buffer and then continue sending packets with a minimum
delay between each
one.
I don't know if it's going or work or not, so any feedback
would be very
valuable. You can change the values on the audio channel
constructor to see if we make it behave better.
H324MAudioChannel(3,160);
Greetings
Sergio
----- Original Message -----
From: "René van Weert" <rvweertgmail.com>
To: "'Development discussion of video media support in
Asterisk'"
<asterisk-videolists.digium.com>
Sent: Monday, April 16, 2007 4:05 PM
Subject: RE: [Asterisk-video] aac audio
Dear Francesco,
I could also be that you have better/faster hardware than I
do. I am running
on a P4 1.8Ghz with 512mb ram. This might be too low at the
moment to
process the incoming video and therefore cause in my case
the audio to sound
corrupted. On what system are you running?
With kind regards,
René
-----Oorspronkelijk bericht-----
Van: asterisk-video-bounceslists.digium.com
[mailto:asterisk-video-bounceslists.digium.com] Namens
francesco
Verzonden: maandag 16 april 2007 11:06
Aan: Development discussion of video media support in
Asterisk
Onderwerp: RE: [Asterisk-video] aac audio
Hi Renè,
I' ve tried to switch off sending audio and video, but I
experienced
only a very few improvement of quality. Quite far from that
of other
handyset (e.g. Samsung).
More over, if mean problem were CPU load due to input video
and audio,
probably we would experience same result on every handset
and no only on
Nokia.
For sure optimization is a good choice but to solve
definitely audio
problem my opinion is that we must investigate on other
stuffes
Francesco
On Sun, 2007-04-15 at 12:18 +0200, René van Weert wrote:
> Hi,
>
> I see indeed that the CPU load goes way down if I
switch off sending
audio/video on the mobile. Isn't there a way to disable the
processing of
this incoming audio/video on Asterisk?
>
> Greetings,
>
> RvW
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
[mailto:asterisk-video-bounceslists.digium.com] Namens
Sergio Garcia
Murillo
> Verzonden: vrijdag 13 april 2007 1:59
> Aan: Development discussion of video media support in
Asterisk
> Onderwerp: Re: [Asterisk-video] aac audio
>
> Probably, when turning off audio and video on nokia,
less processing is
> needed so you get less lagg.
> I think it's time for optimization..
>
> Greetings
> Sergio
>
> ----- Original Message -----
> From: "René van Weert" <rvweertgmail.com>
> To: "'Development discussion of video media
support in Asterisk'"
> <asterisk-videolists.digium.com>
> Sent: Thursday, April 12, 2007 8:39 PM
> Subject: RE: [Asterisk-video] aac audio
>
>
> Hi Francesco and Sergio,
>
> Thank you both for the advice. I tried now with audio
at 12k and video at
> 50k. I also recompiled with -O3. On other phones the
sound is better
already
> but on my nokia n80 it still is a little blurry. Ff I
turn of sending
video
> and audio from the phone however the incoming audio
quality improves quite
a
> lot. Might this be something related to the problem?
>
> With kind regards,
>
> René
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] Namens
francesco
> Verzonden: donderdag 12 april 2007 9:59
> Aan: Development discussion of video media support in
Asterisk
> Onderwerp: RE: [Asterisk-video] aac audio
>
> Hi Renè,
>
> Try to hint audio track indicating also payload size:
>
> mp4creator --hint=2 -mtu=64 dest.mp4
>
> I suggest you also to follow Sergio tip to compile with
-O3 option. You
> may also use amr mode 8, with ffmpeg option -ab
12K...lowering bit rate
> doesn't give me any result, so I don' t think it is a
good choice.
>
> Quality should be much better. But still not good in
Nokia N80 as in
> other handset.
>
> I'm working on it and let you know as soon as I have
news.
>
> Greetings
> Francesco
>
> On Wed, 2007-04-11 at 19:03 +0200, René van Weert
wrote:
> > Hi,
> >
> > I mistakenly used AAC indeed. I am now back to
amr-nb which is working,
> but
> > not 100% correct.
> > I put up a sound sample of how it sounds on my
Nokia N80 here:
> > http://www.digitalinteraction.nl/downloads/audiosample
.mp3
> >
> > Is it because there is still some work to do or
because I am doing
> something
> > wrong the audio sounds so wrong?
> >
> > I have used ffmpeg to convert my media file as
follows:
> > ffmpeg -i woning2.wmv -ab 7.4k -ac 1 -acodec
amr_nb -ar 8000 -vcodec
> h263 -r
> > 10 -s qcif -b 46K -pass 1 -passlogfile log
dest.mp4
> > ffmpeg -i woning2.wmv -ab 7.4k -ac 1 -acodec
amr_nb -ar 8000 -vcodec
> h263 -r
> > 10 -s qcif -b 46K -pass 2 -passlogfile log
dest.mp4
> >
> > mp4creator --hint=1 dest.mp4
> > mp4creator --hint=2 dest.mp4
> >
> > The destination file is available here:
> > h
ttp://www.digitalinteraction.nl/downloads/dest.mp4
> > Mp4info gives:
> > Track Type Info
> > 1 video H.263, 77.500 secs, 44 kbps,
176x144 10.000000 fps
> > 2 audio AMR, 78.240 secs, 8 kbps, 8000 Hz
> > 3 hint Payload H263-2000 for track 1
> > 4 hint Payload AMR for track 2
> >
> > The audio does sound correct when played back on a
pc.
> > I also tried with lower bitrates for both audio
and video but without
> > result.
> >
> > Any clues in what I'm doing wrong?
> > Thanks in advance.
> >
> > René
> >
> > -----Oorspronkelijk bericht-----
> > Van: asterisk-video-bounceslists.digium.com
> > [mailto:asterisk-video-bounceslists.digium.com] Namens Sergio Garcia
> > Murillo
> > Verzonden: donderdag 5 april 2007 12:48
> > Aan: Development discussion of video media support
in Asterisk
> > Onderwerp: Re: [Asterisk-video] aac audio
> >
> > Hi
> >
> > Why do you need to use AAC?
> > You should use one of the codecs supported by
asterisk, currently you
can
> > use pmcu or gsm-amr (for using it with
app_h324m).
> > I added an application a few days ago for creating
an mpr4 file from a
> pcmu
> > file, you can find it here:
> >
> > http://sip.fontventa.com/svn/asterisk/tools/pcm2mp4.cpp
> >
> > Greetings
> > Sergio
> >
> > ----- Original Message -----
> > From: "René van Weert" <rvweertgmail.com>
> > To: "'Development discussion of video media
support in Asterisk'"
> > <asterisk-videolists.digium.com>
> > Sent: Thursday, April 05, 2007 12:17 AM
> > Subject: [Asterisk-video] aac audio
> >
> >
> > Hi everyone,
> >
> > I'm using app_mp4 right now and it is working
great. The only problem I
> have
> > is that I cannot generate 8000hz AAC audio with my
ffmpeg. I tried also
> > several different (precompiled) versions but
without any luck. Ffmpeg
only
> > accepts 11025hz or higher. Is there any other way
to create the audio
for
> > the mp4 file?
> >
> > With kind regards,
> >
> > René van Weert
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
--
Francesco Emmi
A-Tono
Largo Paisiello, 5 - 95124 Catania
Tel.: (+39) 095.7365312
http: www.a-tono.com
Information in this email is confidential and may be
privileged. It is
intended for the addresses only. If you have received it in
error,
please notify the sender immediately and delete it from your
system. You
should not otherwise copy it, retransmit it or use or
disclose its
content to anyone.
Thank you for your co-operation.
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
|
|
| Re: aac audio |
Spain |
2007-04-16 19:22:42 |
Also trying changing the 512 parameter in the
H324MMediaChannel::SendFrame
for 160.
----- Original Message -----
From: "René van Weert" <rvweertgmail.com>
To: "'Development discussion of video media support in
Asterisk'"
<asterisk-videolists.digium.com>
Sent: Monday, April 16, 2007 4:05 PM
Subject: RE: [Asterisk-video] aac audio
Dear Francesco,
I could also be that you have better/faster hardware than I
do. I am running
on a P4 1.8Ghz with 512mb ram. This might be too low at the
moment to
process the incoming video and therefore cause in my case
the audio to sound
corrupted. On what system are you running?
With kind regards,
René
-----Oorspronkelijk bericht-----
Van: asterisk-video-bounceslists.digium.com
[mailto:asterisk-video-bounceslists.digium.com] Namens
francesco
Verzonden: maandag 16 april 2007 11:06
Aan: Development discussion of video media support in
Asterisk
Onderwerp: RE: [Asterisk-video] aac audio
Hi Renè,
I' ve tried to switch off sending audio and video, but I
experienced
only a very few improvement of quality. Quite far from that
of other
handyset (e.g. Samsung).
More over, if mean problem were CPU load due to input video
and audio,
probably we would experience same result on every handset
and no only on
Nokia.
For sure optimization is a good choice but to solve
definitely audio
problem my opinion is that we must investigate on other
stuffes
Francesco
On Sun, 2007-04-15 at 12:18 +0200, René van Weert wrote:
> Hi,
>
> I see indeed that the CPU load goes way down if I
switch off sending
audio/video on the mobile. Isn't there a way to disable the
processing of
this incoming audio/video on Asterisk?
>
> Greetings,
>
> RvW
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
[mailto:asterisk-video-bounceslists.digium.com] Namens
Sergio Garcia
Murillo
> Verzonden: vrijdag 13 april 2007 1:59
> Aan: Development discussion of video media support in
Asterisk
> Onderwerp: Re: [Asterisk-video] aac audio
>
> Probably, when turning off audio and video on nokia,
less processing is
> needed so you get less lagg.
> I think it's time for optimization..
>
> Greetings
> Sergio
>
> ----- Original Message -----
> From: "René van Weert" <rvweertgmail.com>
> To: "'Development discussion of video media
support in Asterisk'"
> <asterisk-videolists.digium.com>
> Sent: Thursday, April 12, 2007 8:39 PM
> Subject: RE: [Asterisk-video] aac audio
>
>
> Hi Francesco and Sergio,
>
> Thank you both for the advice. I tried now with audio
at 12k and video at
> 50k. I also recompiled with -O3. On other phones the
sound is better
already
> but on my nokia n80 it still is a little blurry. Ff I
turn of sending
video
> and audio from the phone however the incoming audio
quality improves quite
a
> lot. Might this be something related to the problem?
>
> With kind regards,
>
> René
>
> -----Oorspronkelijk bericht-----
> Van: asterisk-video-bounceslists.digium.com
> [mailto:asterisk-video-bounceslists.digium.com] Namens
francesco
> Verzonden: donderdag 12 april 2007 9:59
> Aan: Development discussion of video media support in
Asterisk
> Onderwerp: RE: [Asterisk-video] aac audio
>
> Hi Renè,
>
> Try to hint audio track indicating also payload size:
>
> mp4creator --hint=2 -mtu=64 dest.mp4
>
> I suggest you also to follow Sergio tip to compile with
-O3 option. You
> may also use amr mode 8, with ffmpeg option -ab
12K...lowering bit rate
> doesn't give me any result, so I don' t think it is a
good choice.
>
> Quality should be much better. But still not good in
Nokia N80 as in
> other handset.
>
> I'm working on it and let you know as soon as I have
news.
>
> Greetings
> Francesco
>
> On Wed, 2007-04-11 at 19:03 +0200, René van Weert
wrote:
> > Hi,
> >
> > I mistakenly used AAC indeed. I am now back to
amr-nb which is working,
> but
> > not 100% correct.
> > I put up a sound sample of how it sounds on my
Nokia N80 here:
> > http://www.digitalinteraction.nl/downloads/audiosample
.mp3
> >
> > Is it because there is still some work to do or
because I am doing
> something
> > wrong the audio sounds so wrong?
> >
> > I have used ffmpeg to convert my media file as
follows:
> > ffmpeg -i woning2.wmv -ab 7.4k -ac 1 -acodec
amr_nb -ar 8000 -vcodec
> h263 -r
> > 10 -s qcif -b 46K -pass 1 -passlogfile log
dest.mp4
> > ffmpeg -i woning2.wmv -ab 7.4k -ac 1 -acodec
amr_nb -ar 8000 -vcodec
> h263 -r
> > 10 -s qcif -b 46K -pass 2 -passlogfile log
dest.mp4
> >
> > mp4creator --hint=1 dest.mp4
> > mp4creator --hint=2 dest.mp4
> >
> > The destination file is available here:
> > h
ttp://www.digitalinteraction.nl/downloads/dest.mp4
> > Mp4info gives:
> > Track Type Info
> > 1 video H.263, 77.500 secs, 44 kbps,
176x144 10.000000 fps
> > 2 audio AMR, 78.240 secs, 8 kbps, 8000 Hz
> > 3 hint Payload H263-2000 for track 1
> > 4 hint Payload AMR for track 2
> >
> > The audio does sound correct when played back on a
pc.
> > I also tried with lower bitrates for both audio
and video but without
> > result.
> >
> > Any clues in what I'm doing wrong?
> > Thanks in advance.
> >
> > René
> >
> > -----Oorspronkelijk bericht-----
> > Van: asterisk-video-bounceslists.digium.com
> > [mailto:asterisk-video-bounceslists.digium.com] Namens Sergio Garcia
> > Murillo
> > Verzonden: donderdag 5 april 2007 12:48
> > Aan: Development discussion of video media support
in Asterisk
> > Onderwerp: Re: [Asterisk-video] aac audio
> >
> > Hi
> >
> > Why do you need to use AAC?
> > You should use one of the codecs supported by
asterisk, currently you
can
> > use pmcu or gsm-amr (for using it with
app_h324m).
> > I added an application a few days ago for creating
an mpr4 file from a
> pcmu
> > file, you can find it here:
> >
> > http://sip.fontventa.com/svn/asterisk/tools/pcm2mp4.cpp
> >
> > Greetings
> > Sergio
> >
> > ----- Original Message -----
> > From: "René van Weert" <rvweertgmail.com>
> > To: "'Development discussion of video media
support in Asterisk'"
> > <asterisk-videolists.digium.com>
> > Sent: Thursday, April 05, 2007 12:17 AM
> > Subject: [Asterisk-video] aac audio
> >
> >
> > Hi everyone,
> >
> > I'm using app_mp4 right now and it is working
great. The only problem I
> have
> > is that I cannot generate 8000hz AAC audio with my
ffmpeg. I tried also
> > several different (precompiled) versions but
without any luck. Ffmpeg
only
> > accepts 11025hz or higher. Is there any other way
to create the audio
for
> > the mp4 file?
> >
> > With kind regards,
> >
> > René van Weert
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
> >
> > _______________________________________________
> > --Bandwidth and Colocation provided by
Easynews.com --
> >
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> > http://lists.digium.com/mailman/listinfo/asterisk-video
--
Francesco Emmi
A-Tono
Largo Paisiello, 5 - 95124 Catania
Tel.: (+39) 095.7365312
http: www.a-tono.com
Information in this email is confidential and may be
privileged. It is
intended for the addresses only. If you have received it in
error,
please notify the sender immediately and delete it from your
system. You
should not otherwise copy it, retransmit it or use or
disclose its
content to anyone.
Thank you for your co-operation.
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-video mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-video
|
|
[1-3]
|
|