2012年9月9日 星期日

To transmit the TS video file by tsplayer


The parameter of the modulator from tsplayer is as below


1. Bandwidth: 2, 3,4,5,6,7,8 MHZ
         
                   ~~DVB-T standard is 6MHZ

2. Frequency (khz): 45~1001 MHZ

                   ~~ it is about 159ch @ 6MHZ bandwidth.
                   ~~ you can choice what channel you want to modulate!

3.Code rate: 1/2, 2/3,3/4,5/6, 7/8
               
                  ~~the modulator data rate will bigger if the number is big.

4.constellation: QPSK, QAM16, QAM32.

                 ~~ modulator data rate :  QAM32>QAM16>QPSK

                 ~~the distance of  transmitted signal: QPSK> QAM16>QAM32

5.Guard interval : 1/4, 1/8, 1/16, 1/32

                 ~~ modulator date rate:  1/32>1/16>1/8>1/4


6. modulator output data rate & TS file input data rate

           ~~ modulator output data rate> TS file input data rate
          ~~  modulator output date rate is almost the same TS file input data rate.


The modulator date rate number is as below.








We will suggest you the parameter if you transmit " 1080i", "720p" and "480i"


1.   1920x1080i NTSC 29.97fps / 1920x1080i PAL 25 fps    

   if you follow our suggestion parameter  that I inform you the video convert, the    parmeter is as below.

   case1: QAM64

   the video bite rate (TS file input data rate) is 12597000.
   code rate:2/3
   constellation:QAM64
   Guard interval: 1/16


   Case2:QAM16

   the video bite rate (TS file input data rate) is 12597000.
   code rate:3/4
   constellation:QAM16
   Guard interval: 1/16






2.1280x720 (720p)  NTSC  29.97fps /1280X720 PAL 25fps

   if you follow our suggestion parameter  that I inform you the video convert, the    parmeter is as below.


the video bite rate (TS file input data rate) is 18509000.
   code rate:2/3
   constellation:QAM16
   Guard interval: 1/4




3.MPEG-2-HDV1-480i 4x3  NTSC /MPEG-2-HDV1-576i 4x3 PAL


  if you follow our suggestion parameter  that I inform you the video convert, the    parmeter is as below.


the video bite rate (TS file input data rate) is 18509000.
   code rate:2/3
   constellation:QAM16
   Guard interval: 1/4



沒有留言:

MEVO Start直播攝影機開箱測試 |臉書1080p直播 | USB webcam模式 | NDI模式 | HDMI輸出接導播機ATEM MINI

前幾天有一個外國人問我是否MEVO Start 直播攝影機是否可以轉成hdmi 輸出 因此,我就花了一萬五千元買了一台MEVO Start 測試 MEVO Start 直播攝影機,的影像原始解析度非常高, 利用數位放大的方式,達成類似攝影機的PTZ ...