[Asterisk-video] app_mp4 problems

Wed Jul 18 10:47:39 CDT 2007

Hey Klaus :)

Could you send me the ffmpeg string you used? Would be fun to see..
Because the few times IÂ´ve tried with FFmpeg it doesÂ´nt really look
nice..

On the other hand.. what resolution are you running now? The default
hardcoded in the app_mp4 module?

-Atle
* Klaus Darilion <klaus.mailinglists at pernau.at> [070718 17:34]:
> ok - tomorrow.
> 
> I have now made a 3gp file with ffmpeg (libamr_nb). Audio is good, video 
> is not bad, but not as smooth as helix, and after some time video looses 
> sync.
> 
> Maybe if we can find out the helix settings (i-frames, p-frames ...) we 
> could tweak the conversion process with ffmpeg.
> 
> klaus
> Sergio Garcia wrote:
> > Hi Klaus,
> > 
> > Could you send me the files to see what could be going wrong?
> > And personally, I use Helix Mobile Producer for encoding, Quick Time is horrible,
> > and ffmpeg has problems with cbr videos (and you have to enable amr manually).
> > You could also try the tmn h263 encoder, I haven't tried it myself, but ratmin sent
> > me an encoded video and the quality was quite good.
> > 
> > http://www.geocities.com/capecanaveral/Lab/2336/tmndec-3_2_0.tgz
> > 
> > Best regards
> > Sergio
> > 
> > 
> > ---------- Original Message ----------------------------------
> > From: Klaus Darilion <klaus.mailinglists at pernau.at>
> > Reply-To: Development discussion of video media support in Asterisk<asterisk-video at lists.digium.com>
> > Date:  Wed, 18 Jul 2007 16:07:45 +0200
> > 
> >>
> >> Sergio Garcia Murillo wrote:
> >>> Umm.. It should work fine (i.e. not crash) with all codecs, could you get a
> >>> bt of the crash?
> >>> I promise to take a look at all the dumps and logs as soon as I've got any
> >>> time.
> >> Hi Sergio!
> >>
> >> I record an 3gp (from Nokia 6630) file with mp4save.
> >>
> >> The file looks good:
> >> # mp4info record_nokia6630.3gp
> >> mp4info version 1.5.0.1
> >> record_nokia6630.3gp:
> >> Track   Type    Info
> >> 1       audio   AMR, 11.420 secs, 12 kbps, 8000 Hz
> >> 2       hint    Payload AMR for track 1
> >> 3       video   H.263, 3.677 secs, 127 kbps, 176x144 @ 21.484906 fps
> >> 4       hint    Payload H263-1998 for track 3
> >>
> >> After that I try to playback this file with mp4play() - again to the 
> >> Nokia 6630. Then Asterisk crashes:
> >>
> >>     -- Executing [1121 at PSTNin:1] h324m_gw("Zap/1-1", 
> >> "play-nokia at video") in new stack
> >>     -- Executing [play-nokia at video:1] 
> >> Answer("Local/play-nokia at video-2b79,2", "") in new stack
> >>     -- Executing [play-nokia at video:2] 
> >> mp4play("Local/play-nokia at video-2b79,2", 
> >> "/export/videos/record_nokia6630.3gp") in new stack
> >> mp4play /export/videos/record_nokia6630.3gp
> >> found hint track 2
> >> track 1 soun
> >> found hint track 4
> >> track 3 vide
> >> MP4ERROR: FindTrackId: Track index doesn't exist - track 2 type hint
> >> H245 TerminalCapabilitySet TransferRequest
> >> -WriteControlPDU [request]
> >> Encode PDU [95]
> >> Sending CMD [0,87]
> >> H245 Request MasterSlaveDetermination
> >> -WriteControlPDU [request]
> >> Encode PDU [20]
> >> Sending CMD [1,7]
> >> MP4ERROR: MP4Array::[]: index 4 of 4: Numerical result out of range
> >> Sending CMD [0] - 1 left
> >> Really destroying SIP dialog 
> >> '6a92bbab5ca9fd9d761739eb0977a906 at 83.136.32.165' Method: OPTIONS
> >> MP4ERROR: MP4Array::[]: index 4 of 4: Numerical result out of range
> >> Segmentation fault
> >>
> >>
> >>
> >> Then I removed the hint tracks from the recorded file and added new hint 
> >> tracks. Then Asterisk does not crash, but playback does still not work:
> >>
> >>     -- Executing [1123 at PSTNin:1] h324m_gw("Zap/1-1", 
> >> "play-nokia-new at video") in new stack
> >>     -- Executing [play-nokia-new at video:1] 
> >> Answer("Local/play-nokia-new at video-4056,2", "") in new stack
> >>     -- Executing [play-nokia-new at video:2] 
> >> mp4play("Local/play-nokia-new at video-4056,2", 
> >> "/export/videos/record_nokia6630_new.3gp") in new stack
> >> mp4play /export/videos/record_nokia6630_new.3gp
> >> H245 TerminalCapabilitySet TransferRequest
> >> found hint track 5
> >> track 1 soun
> >> -WriteControlPDU [request]
> >> found hint track 6
> >> track 3 vide
> >> Encode PDU [95]
> >> Sending CMD [0,87]
> >> MP4ERROR: FindTrackId: Track index doesn't exist - track 2 type hint
> >> H245 Request MasterSlaveDetermination
> >> -WriteControlPDU [request]
> >> Encode PDU [20]
> >> Sending CMD [1,7]
> >> Sending CMD [0] - 1 left
> >> MP4ERROR: MP4Track::ReadSampleFragment: offset and/or length are too large
> >> MP4ERROR: MP4Array::[]: index 1 of 1: Numerical result out of range
> >> MP4ERROR: MP4Array::[]: index 2 of 1: Numerical result out of range
> >>
> >>
> >> The only working 3gp file yet I have produced with helix mobile producer 
> >> trial version. I also tried Quicktime Pro - audio works but video is 
> >> very bad quality (on the mobile on even on the PC) - looks like 
> >> Quicktime's encoder is bad.
> >>
> >> Do you have any hints how to make a good 3gp file with ffmpeg and 
> >> mpeg4ip? How do I have to build ffpmeg (configure options, patches) and 
> >> mpeg4ip? What are the proper commands to transcode a video?
> >>
> >> thanks
> >> klaus
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> >>
> >> asterisk-video mailing list
> >> To UNSUBSCRIBE or update options visit:
> >>   http://lists.digium.com/mailman/listinfo/asterisk-video
> >>
> >  
> > 
> > _______________________________________________
> > --Bandwidth and Colocation Provided by http://www.api-digital.com--
> > 
> > asterisk-video mailing list
> > To UNSUBSCRIBE or update options visit:
> >    http://lists.digium.com/mailman/listinfo/asterisk-video
> 
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> 
> asterisk-video mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-video