angelzhang
17th August 2005, 07:02
hi,experts
in the encoder process, i find the value of two parameters seq_parameter_set_id and pic_parameter_set_id are fixed as zero. but in the standard,it says that both of these two parameters can have range. seq_parameter_set_id's value range in 0~31,and pic_parameter_set_id's value range 0~255. but i don't know why in the jm96 reference encoder, it fixed these two parameters. of there are other rules to change.
by the way, i find that one bitstream has only transmit SPS and PPS parameters one time which is located at beginning of bitstream. but if i want to start my decoder at the middle of the bitstream, i will miss those SPS and PPS information. then decoder can't work well.
so how does the encoder to transmit SPS and PPS parameters multi times?
please give me interpretations. thanks in advance.
best regards
angel
in the encoder process, i find the value of two parameters seq_parameter_set_id and pic_parameter_set_id are fixed as zero. but in the standard,it says that both of these two parameters can have range. seq_parameter_set_id's value range in 0~31,and pic_parameter_set_id's value range 0~255. but i don't know why in the jm96 reference encoder, it fixed these two parameters. of there are other rules to change.
by the way, i find that one bitstream has only transmit SPS and PPS parameters one time which is located at beginning of bitstream. but if i want to start my decoder at the middle of the bitstream, i will miss those SPS and PPS information. then decoder can't work well.
so how does the encoder to transmit SPS and PPS parameters multi times?
please give me interpretations. thanks in advance.
best regards
angel