It's a decoder side problem. However I am using freescale I.mx27 encoder Regards,
Amit Yedidia Elbit System Ltd. Email: [email protected] Tel: 972-4-8318905 ---------------------------------------------------------- > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Stas Oskin > Sent: Thursday, April 02, 2009 11:01 AM > To: Libav* user questions and discussions > Subject: Re: [libav-user] Decoding h.264 stream without > waiting to I Frame > > Hi. > > What is the encoder vendor and model? > > I might have worked on something similar in past. > > Regards. > > 2009/4/2 Yedidia Amit <[email protected]> > > > > > Hi All, > > > > In short: > > Does ffmepg can start decoding H.264 stream without receiving I/IDR > > farmes? (I don't care abouth the expected artifacts) > > -SPS and PPS are sent both InBand (RTP) and outBand (SDP) > > > > In long: > > I have hardware encoder which sends h264/RFC3984 stream in > multicast or > > unicast. > > This hardware is also controlled by RTSP server (based on LIVE555). > > I want to be able to play the stream using VLC, and join > the stream even > > after the playback starte. > > The problem is that the source generate only one IDR frame in the > > start, and uses AIR (adaptive intra refresh) - to preserve > a constant > > bitrate as much aspossible. > > There are no other IDR or other I frames beside the first one. > > The RTSP server sends the SPS/PPS in the SDP, and they are also > > transmitted in-band (RTP) from time to time. > > The first player which address the RTSP server and actually > initiate the > > stream (and receive the first IDR frame) is able to play the stream. > > The second player which address the RTSP server and want > to join the > > same existing stream (and already missed the first IDR) is > NOT able to > > play the stream. > > I have no problem with the artifact I expect to see when > starting to > > decode withot proper refernce frame, since in short interval all > > macroblocks will be refreshed (AIR). > > Is such scenario is supported in ffmpeg ? > > If so what can be my problem? Are there other > implementation that can > > solve my probelm? . > > > > > > Regards, > > > > > > Amit Yedidia > > Elbit System Ltd. > > > > Email: [email protected] > > Tel: 972-4-8318905 > > ---------------------------------------------------------- > > > > > > > > The information in this e-mail transmission contains proprietary and > > business > > sensitive information. Unauthorized interception of this e-mail may > > constitute > > a violation of law. If you are not the intended recipient, > you are hereby > > notified that any review, dissemination, distribution or > duplication of > > this > > communication is strictly prohibited. You are also asked to > contact the > > sender > > by reply email and immediately destroy all copies of the > original message. > > _______________________________________________ > > libav-user mailing list > > [email protected] > > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > > > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > The information in this e-mail transmission contains proprietary and business sensitive information. Unauthorized interception of this e-mail may constitute a violation of law. If you are not the intended recipient, you are hereby notified that any review, dissemination, distribution or duplication of this communication is strictly prohibited. You are also asked to contact the sender by reply email and immediately destroy all copies of the original message. _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
