# How to integrate scte35

**URL:** <https://casparcgforum.org/t/how-to-integrate-scte35/6950>\
**Category:** General\
**Tags:** ndi, howto, casparcg\
**Created:** [December 3, 2024, 1:55pm UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950 "2024-12-03T13:55:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![danielwoods21](https://casparcgforum.org/letter_avatar_proxy/v4/letter/d/5f9b8f/32.png) [@danielwoods21](https://casparcgforum.org/u/danielwoods21)\
**Post date:** [December 3, 2024, 1:55pm UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950/1 "2024-12-03T13:55:59Z")

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Is it possible to integrate scte35 markers with casparcg? if yes, please share with me some resource, example, guidance

Thank you in advance

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**Author:** ![didikunz](https://casparcgforum.org/user_avatar/casparcgforum.org/didikunz/32/7_2.png) [@didikunz](https://casparcgforum.org/u/didikunz)\
**Post date:** [December 3, 2024, 5:39pm UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950/2 "2024-12-03T17:39:33Z")

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Caspar is made for a broadcast production workflow. The Decklink cards output in SDI and not ASI. So currently none if these technologies (close captioning etc.) are supported. But Caspar is open source, written in c++ so you could add that functionality yourself (or hire someone to do it).

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**Author:** ![danielwoods21](https://casparcgforum.org/letter_avatar_proxy/v4/letter/d/5f9b8f/32.png) [@danielwoods21](https://casparcgforum.org/u/danielwoods21)\
**Post date:** [December 4, 2024, 4:12am UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950/3 "2024-12-04T04:12:53Z")

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Thank you very much, I have been using casparcg for a while and I thought to develop scte35 and closed captioning as our new clients require them. I am thinking about developing these features but my knowledge is limited in developing streaming apps. we currently use mp4 files and if I want to use scte35 over ndi, should I changed them to .ts files or can i still use mp4? as you are more knowledgeable, what step in the process should we insert scte35?

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**Author:** ![didikunz](https://casparcgforum.org/user_avatar/casparcgforum.org/didikunz/32/7_2.png) [@didikunz](https://casparcgforum.org/u/didikunz)\
**Post date:** [December 4, 2024, 10:32am UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950/4 "2024-12-04T10:32:32Z")

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> [@danielwoods21](#):
>
> as you are more knowledgeable, what step in the process should we insert scte35?

I have no idea, if you ask me personally. I never had to do with distribution, I only worked in production. Maybe somebody knows more?

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**Author:** ![didikunz](https://casparcgforum.org/user_avatar/casparcgforum.org/didikunz/32/7_2.png) [@didikunz](https://casparcgforum.org/u/didikunz)\
**Post date:** [December 4, 2024, 10:36am UTC](https://casparcgforum.org/t/how-to-integrate-scte35/6950/5 "2024-12-04T10:36:43Z")

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See [this tread](https://casparcgforum.org/t/how-do-you-insert-closed-captions-in-your-tv-broadcast-solutions/5965/9), it talks about something similar.