[Mp4-tech] Consecutive IDR pictures

[Gary Sullivan]

One idea to check: Make sure PicOrderCnt is 0 for every IDR picture.
Best Regards,
Gary Sullivan
+> -----Original Message-----
+> From: mp4-tech-bounces lists.mpegif.org 
+> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Tomislav Muic
+> Sent: Sunday, August 12, 2023 9:16 AM
+> To: mp4-tech lists.mpegif.org
+> Subject: [Mp4-tech] Consecutive IDR pictures
+> 
+> I am writing H264 codec and I am trying to get stream 
+> working with IDR
+> coded pictures in a sequence. First picture is coded OK, but second
+> one gives weird errors in reference decoder. it reads the A.U.
+> delimiter OK, but crashes on decoding slice which is identical
+> bitstream as first open
+> 
+> I update following parameters:
+>  ++seq_id;//seq_parameter_set_id
+>  ++pic_id; //pic_parameter_set_id
+> frame_num=0;
+> ++idr_pic_id;
+> 
+> did I forget some parameter?
+> 
+> I use following NAL units for each IDR picture
+>  access_unit_delimiter
+>   seq_par set
+>   PPS
+>   slice
+>   end_of _sequence
+> etc...
+> 
+> 
+> 
+> -- 
+> Tomislav Muić
+> 
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