Answers.Body: <p>It is quite possible to make, but think FPGA with 3 Gig SERDES (so probably a modest Kintex 7 or something similar) with a couple of SDI line IO parts (TI) and maybe a PLL from SI Labs, add some power conversion and a mess of VHDL, job done. </p>
  
  <p>Maybe a few months work.  </p>
  
  <p>Obviously if you have LTC you can stripe that onto an audio track just using any old audio embedder, but I am guessing that does not really do it for you? </p>
  
  <p>I would be a little surprised if YellowBrix or maybe Decimator Designs do not have a box that does this. </p>
  
  <p>Regards, Dan.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-05-12T18:53:53.723Z
Answers.LastActivityDate: 2018-05-12T18:53:53.723Z
Answers.UserDisplayName: Dan Mills
Body: <p>I was wondering if there’s a converter out there that would take a HD-SDI in, as well as a LTC in, and an SDI out. </p>
  
  <p>We currently have video feeds with no timecode embedded and was trying to loop through a feed of timecode which we can feed from a BNC.</p>
  
  <p>I’m also seeing if it’s possible to make too! I know it is a thing that can happen considering Atomos Shoguns can feed in and LTC. I just need that without the screen.</p>
  
  <p>If i fed to BNCs (a T Bar) into one out would that work? Is video and timecode able to be merged or would it be read as two feed signals?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-05-12T17:08:49.567Z
Comments.Text: You definitely can't use a BNC T do combine the signals like that, even worse, the input video wouldn't work at all. You can make it but not just by soldering a few components together; it will take some form of processing. Just to confirm, you have an analog LTC input that you want embedded into the HANC (RP188/ST12-2) on the HD-SDI, right?
Comments.UserDisplayName: Michael Liebman
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-06-08T12:19:43.160Z
Comments.Text: ATOMOS has a LTC converter that inserts if into an SDI signal for around $90 from B&H.
Comments.UserDisplayName: Bob
Tags: <video><sync><timecode>
Title: SDI loop through with LTC embedder
UserDisplayName: markb
ThreadText: # SDI loop through with LTC embedder
  
  (Asked by: username_0 on 2018-05-12)
  
  I was wondering if there’s a converter out there that would take a HD-SDI in, as well as a LTC in, and an SDI out.
  
  We currently have video feeds with no timecode embedded and was trying to loop through a feed of timecode which we can feed from a BNC.
  
  I’m also seeing if it’s possible to make too! I know it is a thing that can happen considering Atomos Shoguns can feed in and LTC. I just need that without the screen.
  
  If i fed to BNCs (a T Bar) into one out would that work? Is video and timecode able to be merged or would it be read as two feed signals?
  
  **Tags:** video, sync, timecode
  
  > **Comments:**
  > **username_1**: You definitely can't use a BNC T do combine the signals like that, even worse, the input video wouldn't work at all. You can make it but not just by soldering a few components together; it will take some form of processing. Just to confirm, you have an analog LTC input that you want embedded into the HANC (RP188/ST12-2) on the HD-SDI, right?  
  > **username_2**: ATOMOS has a LTC converter that inserts if into an SDI signal for around $90 from B&H.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_3 on 2018-05-12. Score: 1 | Accepted answer
  
  It is quite possible to make, but think FPGA with 3 Gig SERDES (so probably a modest Kintex 7 or something similar) with a couple of SDI line IO parts (TI) and maybe a PLL from SI Labs, add some power conversion and a mess of VHDL, job done.
  
  Maybe a few months work.
  
  Obviously if you have LTC you can stripe that onto an audio track just using any old audio embedder, but I am guessing that does not really do it for you?
  
  I would be a little surprised if YellowBrix or maybe Decimator Designs do not have a box that does this.
  
  Regards, Dan.
  
  
  ---
  
  