Dear Sven
I will appreciate it a lot. We are in a dead pont. Today we test using
ffmpeg to send UDP paquets and we have even less success. We call ffmpeg like
this:
ffmpeg -i movie.mpeg -vcodec copy -acodec copy -bufsize 1000000 -f
mpegts -re udp://IP:port?pkt_size=1316";
Over VLC no problem, but on our Sagem STB no way :-(
mp3 + ts file sound with "noise" and videos cant sincronize at all.
Thank you very much
Santiago
El 08/02/2011, a las 22:37, Sven Alisch [via libav-users] escribió:
> Hello,
>
> i work at a similar problem too. I need a m2ts stream. Therefore I patched
> the mpegtsenc.c - file. At the moment I work at the TP_EXTRA_HEADER with the
> startcode. If you like, then I can send you my mpegts.enc-file. There you can
> see, what you have to do.
>
> regards,
> Sven
>
> Am 08.02.2011 um 13:15 schrieb smerchan:
>
> >
> > Thanksyo very much, we will look forward then. :-) trying to solve it.
> >
> > El 08/02/2011, a las 12:30, Steffen Ebersbach-2 [via libav-users] escribió:
> >
> >>>
> >>> Hello all,
> >>>
> >>> I can create a Transport Stream (ts) with 188 byte packet size with
> >>> libavformat. This works fine. But I can not create an m2ts (MPEG 2
> >>> Transport
> >>> Stream-File) for bluray or such media. I looked into the mpegts.h and
> >>> mpegts.c - file (under /libavformat) and see, that the 192byte Paket Size
> >>> exists as an macro. But it seems that libavformat only support
> >>> m2ts-reading.
> >>> So my question is now, exists an hint to create a m2ts-Stream?
> >>>
> >>> Or alternatively:
> >>>
> >>> I can not find any information of how building an m2ts-Stream. OK I know
> >>> that m2ts is only a 188byte ts-packet plus 4 byte Timecode. BUT How is
> >>> the
> >>> TimeCode build??? And how is the TimeCode saved??? Do I have to append it
> >>> at
> >>> the end of an "normal" ts packet?
> >>>
> >>>
> >>> I am trying to do more or less the same without success.
> >>> In ffserver I am trying to send a mpegts file video over RTP transport
> >>> MT2P,
> >>> thats is only mpegts packets without demux them, in one raw stream.
> >>> We have follow the way you have do it and adapt the cmd_setup and
> >>> cmd_play
> >>> to work with the STB client I have to use, that only understand MP2T.
> >>> Sending data we are quite loose.
> >>> Could you please help us??
> >>
> >> Hello,
> >>
> >> so far I know, FFmpeg doesn't support sending m2ts packets, but I'm not
> >> sure. You have to look at the possible output formats to find this out.
> >> But if you do the RTP way, which I described, you can add this 4 Byte by
> >> your self after read the packet from the local video file, before send
> >> then to RTP. But I don't know how the format of this 4 Byte is about.
> >>
> >>>
> >>> the point 4. Do you use it in http_prepare_data??
> >>>
> >>
> >> No, because I don't use the ffserver code in my project.
> >>
> >> To use my code for sending a mpegts file 'as is' to a client, you have to
> >> modify my code, because it handles with raw-pictures. It first encode a
> >> picture to MPEG-2 (encode_video()) and then send it as a mpeg-ts rtp
> >> stream.
> >> For you, is enough to open the file an read the ts-paket from it and then
> >> write it to the rtp output.
> >>
> >>> tspkt.size = len;
> >>> tspkt.data = destbuff;
> >>>
> >>> //write to output , not sure if _interleaved_ is the right call
> >>> av_interleaved_write_frame(rtpcontext, &tspkt);
> >>> av_free(destbuff);
> >>
> >>
> >> Steffen
> >>
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> >
> > Fdo: Santiago Merchán
> > Grupo Samtel
> > Telf: 91 426 48 75
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Fdo: Santiago Merchán
Grupo Samtel
Telf: 91 426 48 75
Fax: 91 431 05 73
La información incluida en el presente correo electrónico es CONFIDENCIAL,
siendo para el uso exclusivo del destinatario arriba mencionado.
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