Hi all. I will try to define my problem as best I can. Definition: I'm currently streaming mpeg4 stream via RTSP using live555 library. I modifed the lib so I devert received frames directly into avcodec_decode_video. Settings of codec and codeccontext are all set to CODEC_ID_MPEG4 and resolution is set to CIF. My picture renderer class is set to work in SDL with yuv420 pixel format. I'm also using swscale for conversion. These 2 sw* functions are declared like this: pswsctx = sws_getContext(w_,h_,PIX_FMT_YUV420P,w_,h_,PIX_FMT_YUV420P,2,NULL,NULL,NULL);
is declared in initialization, while: sws_scale(pswsctx, frame->data, frame->linesize, 0, h_, pict.data, pict.linesize); is used for conversion, where frame is pointer to AVFrame containing the decoded frame. Problem: When decoding and displaying MPEG4 image decoded in YUV420 pixel format, delata values of each frame get distorted as something moves in fron of camera. In other words, when person move in front of the camera, there is a trail of blured pixel boxes where the movement was. And it clears in few movements. (Probably on every I frame)The same thing doesn't happen if movement is slow enough. I don't think that this is because these frames are lost, or the UDP packets are lost in transport, because I saved tje stream, directly to disk, and when viewing the video, everything is ok. I also tried streaming MJPEG type of stream from the same camera, and in that case everything is stramed fine. My geuss is falty codec/swContext settings but don't know where. ELMA Kurtalj d.o.o. (ELMA Kurtalj ltd.) Vitezićeva 1a, 10000 Zagreb, Hrvatska (Viteziceva 1a, 10000 Zagreb, Croatia) Tel: 01/3035555, Faks: 01/3035599 (Tel: ++385-1-3035555, Fax: ++385-1-3035599 ) Www: www.elma.hr; shop.elma.hr E-mail: [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) [EMAIL PROTECTED] ([EMAIL PROTECTED]) _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
