mpeg-2

Generate PCR from PTS

↘锁芯ラ 提交于 2019-11-28 20:55:17
I am trying to create PCR from PTS as follows. S64 nPcr = nPts * 9 / 100; pTsBuf[4] = 7 + nStuffyingBytes; pTsBuf[5] = 0x10; /* flags */ pTsBuf[6] = ( nPcr >> 25 )&0xff; pTsBuf[7] = ( nPcr >> 17 )&0xff; pTsBuf[8] = ( nPcr >> 9 )&0xff; pTsBuf[9] = ( nPcr >> 1 )&0xff; pTsBuf[10]= ( nPcr << 7 )&0x80; pTsBuf[11]= 0; But the problem is VLC is playing only first frame and not playing any other frames. and I am getting the warning "early picture skipped". Could any one help me in converting from PTS to PCR.. First, the PCR has 33+9 bits, the PTS 33 bits. The 33 bit-portion (called PCR_base) runs at

Generate PCR from PTS

烂漫一生 提交于 2019-11-27 13:18:58
问题 I am trying to create PCR from PTS as follows. S64 nPcr = nPts * 9 / 100; pTsBuf[4] = 7 + nStuffyingBytes; pTsBuf[5] = 0x10; /* flags */ pTsBuf[6] = ( nPcr >> 25 )&0xff; pTsBuf[7] = ( nPcr >> 17 )&0xff; pTsBuf[8] = ( nPcr >> 9 )&0xff; pTsBuf[9] = ( nPcr >> 1 )&0xff; pTsBuf[10]= ( nPcr << 7 )&0x80; pTsBuf[11]= 0; But the problem is VLC is playing only first frame and not playing any other frames. and I am getting the warning "early picture skipped". Could any one help me in converting from PTS

Fetching the dimensions of a H264Video stream

一世执手 提交于 2019-11-26 15:50:35
I am trying to fetch the dimensions (Height and width) from a H264 stream. I know that to fetch the same details from a mpeg2 stream you have to look at the four bytes following the sequence header start code ((01B3)). Will the same logic work for H264? Would appreciate any help I get.. Cipi NO!!! You must run a complex function to extract video dimensions from Sequence Parameter Sets. How to do this? Well first you must write your own Exp-Golomb decoder, or find one online... in live555 source code somewhere there is one for example... Then you must get one SPS frame. It has NAL=0x67 (NAL is

Fetching the dimensions of a H264Video stream

一笑奈何 提交于 2019-11-26 04:37:53
问题 I am trying to fetch the dimensions (Height and width) from a H264 stream. I know that to fetch the same details from a mpeg2 stream you have to look at the four bytes following the sequence header start code ((01B3)). Will the same logic work for H264? Would appreciate any help I get.. 回答1: NO!!! You must run a complex function to extract video dimensions from Sequence Parameter Sets. How to do this? Well first you must write your own Exp-Golomb decoder, or find one online... in live555