[Asterisk-video] mp4save, bad video length XD

borja.sixto at i6net.com borja.sixto at i6net.com
Tue Nov 4 03:32:24 CST 2008


Hola Alberto (it seems that this subjet generate a lot of interest from spanish
guys...),

The duration of the video is wrong.
I think your Sip Phone set a bad timestamp (set always 327327).
(the native module use the timestamp to calculate the duration/time).

The mp4save module have some limitations (once is that it not support lost or
burst messages... and not garanty the video/audio synchronization).
It works better with 3G video calls.

Regards and Saludos,


Borja




Selon aj2r <ajrodriguez at fidesol.org>:

> I'm not allowed to send attached files that exceed 40k, so I've pasted a
> part of the dump
>
> mp4file test.mp4, track 1, samples 536, timescale 8000
> sampleId  1, size   160 duration      160 time        0 00:00:00.000
> sampleId  2, size   160 duration      160 time      160 00:00:00.020
> sampleId  3, size   160 duration      160 time      320 00:00:00.040
> sampleId  4, size   160 duration      160 time      480 00:00:00.060
> sampleId  5, size   160 duration      160 time      640 00:00:00.080
> sampleId  6, size   160 duration      160 time      800 00:00:00.100
> sampleId  7, size   160 duration      160 time      960 00:00:00.120
> sampleId  8, size   160 duration      160 time     1120 00:00:00.140
> sampleId  9, size   160 duration      160 time     1280 00:00:00.160
> sampleId 10, size   160 duration      160 time     1440 00:00:00.180
> sampleId 11, size   160 duration      160 time     1600 00:00:00.200
> sampleId 12, size   160 duration      160 time     1760 00:00:00.220
> sampleId 13, size   160 duration      160 time     1920 00:00:00.240
> sampleId 14, size   160 duration      160 time     2080 00:00:00.260
> sampleId 15, size   160 duration      160 time     2240 00:00:00.280
> sampleId 16, size   160 duration      160 time     2400 00:00:00.300
> sampleId 17, size   160 duration      160 time     2560 00:00:00.320
> sampleId 18, size   160 duration      160 time     2720 00:00:00.340
> sampleId 19, size   160 duration      160 time     2880 00:00:00.360
> sampleId 20, size   160 duration      160 time     3040 00:00:00.380
> sampleId 21, size   160 duration      160 time     3200 00:00:00.400
> ...............
>
> mp4file test.mp4, track 2, samples 536, timescale 8000
> sampleId  1, size    32 duration      160 time        0 00:00:00.000 S
> sampleId  2, size    32 duration      160 time      160 00:00:00.020 S
> sampleId  3, size    32 duration      160 time      320 00:00:00.040 S
> sampleId  4, size    32 duration      160 time      480 00:00:00.060 S
> sampleId  5, size    32 duration      160 time      640 00:00:00.080 S
> sampleId  6, size    32 duration      160 time      800 00:00:00.100 S
> sampleId  7, size    32 duration      160 time      960 00:00:00.120 S
> sampleId  8, size    32 duration      160 time     1120 00:00:00.140 S
> sampleId  9, size    32 duration      160 time     1280 00:00:00.160 S
> sampleId 10, size    32 duration      160 time     1440 00:00:00.180 S
> sampleId 11, size    32 duration      160 time     1600 00:00:00.200 S
> sampleId 12, size    32 duration      160 time     1760 00:00:00.220 S
> sampleId 13, size    32 duration      160 time     1920 00:00:00.240 S
> sampleId 14, size    32 duration      160 time     2080 00:00:00.260 S
> sampleId 15, size    32 duration      160 time     2240 00:00:00.280 S
> sampleId 16, size    32 duration      160 time     2400 00:00:00.300 S
> sampleId 17, size    32 duration      160 time     2560 00:00:00.320 S
> sampleId 18, size    32 duration      160 time     2720 00:00:00.340 S
> sampleId 19, size    32 duration      160 time     2880 00:00:00.360 S
> sampleId 20, size    32 duration      160 time     3040 00:00:00.380 S
> sampleId 21, size    32 duration      160 time     3200 00:00:00.400 S
> sampleId 22, size    32 duration      160 time     3360 00:00:00.420 S
> ..............
>
> mp4file test.mp4, track 3, samples 66, timescale 90000
> sampleId  1, size 16232 duration        0 time        0 00:00:00.000 S
> sampleId  2, size  3102 duration   327327 time        0 00:00:00.000 S
> sampleId  3, size   142 duration   327327 time   327327 00:00:03.636 S
> sampleId  4, size  2610 duration   327327 time   654654 00:00:07.273 S
> sampleId  5, size  1913 duration   327327 time   981981 00:00:10.910 S
> sampleId  6, size   194 duration   327327 time  1309308 00:00:14.547 S
> sampleId  7, size   146 duration   327327 time  1636635 00:00:18.184 S
> sampleId  8, size   273 duration   327327 time  1963962 00:00:21.821 S
> sampleId  9, size   404 duration   327327 time  2291289 00:00:25.458 S
> sampleId 10, size   870 duration   327327 time  2618616 00:00:29.095 S
> sampleId 11, size   918 duration   327327 time  2945943 00:00:32.732 S
> sampleId 12, size  1270 duration   327327 time  3273270 00:00:36.369 S
> sampleId 13, size  1619 duration   327327 time  3600597 00:00:40.006 S
> sampleId 14, size  2445 duration   327327 time  3927924 00:00:43.643 S
> sampleId 15, size  2216 duration   327327 time  4255251 00:00:47.280 S
> sampleId 16, size  2363 duration   327327 time  4582578 00:00:50.917 S
> sampleId 17, size  2524 duration   327327 time  4909905 00:00:54.554 S
> sampleId 18, size  2174 duration   327327 time  5237232 00:00:58.191 S
> sampleId 19, size  1529 duration   327327 time  5564559 00:01:01.828 S
> sampleId 20, size   778 duration   327327 time  5891886 00:01:05.465 S
> sampleId 21, size   769 duration   327327 time  6219213 00:01:09.102 S
> sampleId 22, size  1449 duration   327327 time  6546540 00:01:12.739 S
> ........
>
> mp4file test.mp4, track 4, samples 66, timescale 90000
> sampleId  1, size   532 duration        0 time        0 00:00:00.000 S
> sampleId  2, size   136 duration   327327 time        0 00:00:00.000 S
> sampleId  3, size    48 duration   327327 time   327327 00:00:03.636 S
> sampleId  4, size    92 duration   327327 time   654654 00:00:07.273 S
> sampleId  5, size    92 duration   327327 time   981981 00:00:10.910 S
> sampleId  6, size    48 duration   327327 time  1309308 00:00:14.547 S
> sampleId  7, size    48 duration   327327 time  1636635 00:00:18.184 S
> sampleId  8, size    48 duration   327327 time  1963962 00:00:21.821 S
> sampleId  9, size    48 duration   327327 time  2291289 00:00:25.458 S
> sampleId 10, size    48 duration   327327 time  2618616 00:00:29.095 S
> sampleId 11, size    48 duration   327327 time  2945943 00:00:32.732 S
> sampleId 12, size    48 duration   327327 time  3273270 00:00:36.369 S
> sampleId 13, size    92 duration   327327 time  3600597 00:00:40.006 S
> sampleId 14, size    92 duration   327327 time  3927924 00:00:43.643 S
> sampleId 15, size    92 duration   327327 time  4255251 00:00:47.280 S
> sampleId 16, size    92 duration   327327 time  4582578 00:00:50.917 S
> sampleId 17, size    92 duration   327327 time  4909905 00:00:54.554 S
> sampleId 18, size    92 duration   327327 time  5237232 00:00:58.191 S
> sampleId 19, size    92 duration   327327 time  5564559 00:01:01.828 S
> sampleId 20, size    48 duration   327327 time  5891886 00:01:05.465 S
> sampleId 21, size    48 duration   327327 time  6219213 00:01:09.102 S
> sampleId 22, size    92 duration   327327 time  6546540 00:01:12.739 S
> ..............
>
>
>
> Regards,
>
>
> El lun, 03-11-2008 a las 21:45 +0100, Borja SIXTO escribió:
> > Can you dump the track (mp3trackdump) and compare the 2 tracks ?
> >
> > Alberto José Rodríguez Rodríguez a écrit :
> > > Can you help me with app_mp4?
> > >
> > > El lun, 03-11-2008 a las 18:14 +0100, Borja SIXTO escribió:
> > >
> > >> Hi alls,
> > >>
> > >> The mp4save use timestamps to mark the video sequence.
> > >> Some SIP phones not pay attention about that a set wrong values...
> > >>
> > >> The app_h324m have the same problem, Sergio...
> > >>
> > >> I have made this modification to the app_h324m (all the frame of the
> > >> same sample must have the same timestamp, Asterisk use relative
> > >> "timestamps" by the use of samples !)  :
> > >>             /* Rest of values*/
> > >>             send->src = "h324m";
> > >>             if (vt->first)
> > >>             send->samples = vt->samples;
> > >>             else
> > >>             send->samples = 0;
> > >>
> > >> Regards,
> > >>
> > >>
> > >> Borja
> > >>
> > >>
> > >> Sergio Garcia Murillo a écrit :
> > >>
> > >>> Umm.. it seems that it has calculated the fps wrong
> > >>>
> > >>> 176x144 @ 0.279218 fps
> > >>>
> > >>> How have you recorded the file?
> > >>>
> > >>> Best regards
> > >>> Sergio
> > >>>
> > >>> aj2r escribió:
> > >>>
> > >>>
> > >>>> Hello, when I save a video with mp4save, I obtain a wrong mp4 file.
> > >>>> The video track length is n times larger than the audio track length
> > >>>> which is the actual length.
> > >>>>
> > >>>> mp4info output:
> > >>>>   mp4info version 1.5.0.1
> > >>>>   /tmp/test.mp4:
> > >>>>   Track	Type	Info
> > >>>>   1	audio	G.711 uLaw, 21.780 secs, 64 kbps, 8000 Hz
> > >>>>   2	hint	Payload PCMU for track 1
> > >>>>   3	video	H.263, 469.168 secs, 3 kbps, 176x144 @ 0.279218 fps
> > >>>>   4	hint	Payload H263-1998 for track
> > >>>>
> > >>>> Any idea? Thanks
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>
> > >>> _______________________________________________
> > >>> --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
> --
> Alberto José Rodríguez Rodríguez
> Fundación I+D del Software Libre
> Parque Tecnológico de Ciencias de la Salud
> BIC Granada-CEEI
> Avda. de la Innovación, 1
> 18100 Armilla (Granada)
> Tlf. 958750457
> ajrodriguez at fidesol.org
> www.fidesol.org
>
>
> _______________________________________________
> --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





More information about the asterisk-video mailing list