I am using X264 and librtmp to send my live camera frame, all the things seems right. but my web test flash can't show the correct video. Sometimes it seems correct, but when I re-click play button, it doesn't show any picture on the flash.
Here is my X264 config code
x264_param_default_preset(&x264param, "ultrafast", "zerolatency");
x264param.i_threads = 2;
x264param.i_width = width;
x264param.i_height = height;
x264param.i_log_level = X264_LOG_DEBUG;
x264param.i_fps_num = x264param.i_timebase_num= fps;
x264param.i_fps_den = x264param.i_timebase_den=1;
x264param.i_frame_total = 0;
x264param.i_frame_reference =1;
//x264param.i_frame_reference = 2;
x264param.i_keyint_min = 25;
x264param.i_keyint_max = fps*3;
x264param.i_scenecut_threshold = 40;
x264param.b_deblocking_filter = 1;
x264param.b_cabac = 0;
x264param.analyse.i_trellis = 0;
x264param.analyse.b_chroma_me = 1;
x264param.vui.i_sar_width = 0;
x264param.vui.i_sar_height = 0;
x264param.i_bframe_bias = 0;
x264param.b_interlaced= 0;
x264param.analyse.i_subpel_refine = 6; /* 0..5 -> 1..6 */
x264param.analyse.i_me_method = X264_ME_DIA;//X264_ME_HEX?X264_ME_DIA
x264param.analyse.i_me_range = 16;
x264param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_AUTO;
x264param.i_deblocking_filter_alphac0 = 0;
x264param.i_deblocking_filter_beta = 0;
//x264param.analyse.intra = X264_ANALYSE_I4x4;
x264param.analyse.intra = X264_ANALYSE_I4x4;// | X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16;
x264param.analyse.inter = X264_ANALYSE_I4x4 | X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16;
//edit 2014-7-28
x264param.analyse.b_transform_8x8 = 1;
//x264param.analyse.b_transform_8x8 = 0;
x264param.analyse.b_fast_pskip = 1;
x264param.i_bframe = 0;
//x264param.b_intra_refresh
x264param.analyse.b_weighted_bipred = 0;
//// Intra refres:
x264param.i_keyint_max = 250;
x264param.b_intra_refresh = 0;
////Rate control:
//x264param.rc.i_rc_method = X264_RC_CRF;
//Rate Control
x264param.rc.f_ip_factor = 1.4f;
x264param.rc.f_pb_factor = 1.3f;
x264param.rc.f_qcompress = 1.0;
x264param.rc.i_qp_min = 20;//20;
x264param.rc.i_qp_max = 32;
x264param.rc.i_qp_step = 1;
switch (0)
{
case 0: /* 1 PASS ABR */
x264param.rc.i_rc_method = X264_RC_ABR;
x264param.rc.i_bitrate = 300; // max = 5000
x264param.rc.b_mb_tree = 0;
break;
case 1: /* 1 PASS CQ */
x264param.rc.i_rc_method = X264_RC_CQP;
x264param.rc.i_qp_constant = 26;//10 - 51
break;
}
//For streaming:
x264param.b_repeat_headers = 1;
x264param.b_annexb = 1;
x264_param_apply_profile(&x264param, "baseline");
encoder = x264_encoder_open(&x264param);
x264_picture_init( &pic_in );
x264_picture_alloc(&pic_in, X264_CSP_I420, width, height);
pic_in.img.i_csp = X264_CSP_I420|X264_CSP_VFLIP;
pic_in.img.i_plane = 3;
pic_in.i_type = X264_TYPE_AUTO;
Sending To RTMP:
sws_scale(convertCtx,&a,&scribe,0,height, pic_in.img.plane, pic_in.img.i_stride);
int i_nal;
int i_frame_size = x264_encoder_encode( encoder, &nal, &i_nal, &pic_in, &pic_out );
if(i_frame_size <= 0){
printf("\t!!!FAILED encode frame \n");
}else{
for (int i = 0,last=0; i < i_nal;i++)
{
fwrite(nal[i].p_payload, 1, i_frame_size-last, fpw1);
if (nal[i].i_type == NAL_SPS) {
sps_len = nal[i].i_payload-4;
sps = new unsigned char[sps_len];
memcpy(sps,nal[i].p_payload+4,sps_len);
} else if (nal[i].i_type == NAL_PPS) {
pps_len = nal[i].i_payload-4;
pps = new unsigned char[sps_len];
memcpy(pps,nal[i].p_payload+4,pps_len);
send_video_sps_pps();
free(sps);
free(pps);
} else {
send_rtmp_video(nal[i].p_payload,i_frame_size-last);
break;
}
last += nal[i].i_payload;
}
}
Send PPS and SPS
void send_video_sps_pps(){
if(rtmp!= NULL){
RTMPPacket * packet;
unsigned char * body;
int i;
packet = (RTMPPacket *)malloc(RTMP_HEAD_SIZE+1024);
memset(packet,0,RTMP_HEAD_SIZE);
packet->m_body = (char *)packet + RTMP_HEAD_SIZE;
body = (unsigned char *)packet->m_body;
i = 0;
body[i++] = 0x17;
body[i++] = 0x00;
body[i++] = 0x00;
body[i++] = 0x00;
body[i++] = 0x00;
/*AVCDecoderConfigurationRecord*/
body[i++] = 0x01;
body[i++] = sps[1];
body[i++] = sps[2];
body[i++] = sps[3];
body[i++] = 0xff;
/*sps*/
body[i++] = 0xe1;
body[i++] = (sps_len >> 8) & 0xff;
body[i++] = sps_len & 0xff;
memcpy(&body[i],sps,sps_len);
i += sps_len;
/*pps*/
body[i++] = 0x01;
body[i++] = (pps_len >> 8) & 0xff;
body[i++] = (pps_len) & 0xff;
memcpy(&body[i],pps,pps_len);
i += pps_len;
packet->m_packetType = RTMP_PACKET_TYPE_VIDEO;
packet->m_nBodySize = i;
packet->m_nChannel = 0x04;
packet->m_nTimeStamp = 0;
packet->m_hasAbsTimestamp = 0;
packet->m_headerType = RTMP_PACKET_SIZE_MEDIUM;
packet->m_nInfoField2 = rtmp->m_stream_id;
RTMP_SendPacket(rtmp,packet,TRUE);
free(packet);
rtmp_start_time = GetTickCount();
}else{
std::cout<<"RTMP is not ready"<<std::endl;
}
}
Send video Frame
void send_rtmp_video(unsigned char * buf,int len){
RTMPPacket * packet;
long timeoffset = GetTickCount() - rtmp_start_time;
int type = buf[0]&0x1f;
packet = (RTMPPacket *)malloc(RTMP_HEAD_SIZE+len+9);
memset(packet,0,RTMP_HEAD_SIZE);
packet->m_body = (char *)packet + RTMP_HEAD_SIZE;
packet->m_nBodySize = len + 9;
/*send video packet*/
unsigned char *body = (unsigned char *)packet->m_body;
memset(body,0,len+9);
/*key frame*/
body[0] = 0x27;
if (type == NAL_SLICE_IDR) {
body[0] = 0x17;
}
body[1] = 0x01; /*nal unit*/
body[2] = 0x00;
body[3] = 0x00;
body[4] = 0x00;
body[5] = (len >> 24) & 0xff;
body[6] = (len >> 16) & 0xff;
body[7] = (len >> 8) & 0xff;
body[8] = (len ) & 0xff;
/*copy data*/
memcpy(&body[9],buf,len);
packet->m_hasAbsTimestamp = 0;
packet->m_packetType = RTMP_PACKET_TYPE_VIDEO;
if(rtmp != NULL){
packet->m_nInfoField2 = rtmp->m_stream_id;
}
packet->m_nChannel = 0x04;
packet->m_headerType = RTMP_PACKET_SIZE_LARGE;
packet->m_nTimeStamp = timeoffset;
if(rtmp != NULL){
RTMP_SendPacket(rtmp,packet,TRUE);
}
free(packet);
}
colin
Try changing:
pps = new unsigned char[sps_len];
to:
pps = new unsigned char[pps_len];
来源：https://stackoverflow.com/questions/25031759/using-x264-and-librtmp-to-send-live-camera-frame-but-the-flash-cant-show