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**Category:** HTML/CSS\
**Created:** [March 12, 2022, 9:03pm UTC](https://forum.codewithmosh.com/t/video-topic-part-1-html-basics/11224 "2022-03-12T21:03:29Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@Loislayna](https://forum.codewithmosh.com/u/Loislayna)\
**Post date:** [March 12, 2022, 9:03pm UTC](https://forum.codewithmosh.com/t/video-topic-part-1-html-basics/11224/1 "2022-03-12T21:03:29Z")
I am in the Ultimate 3 part course on HTML and CSS in the first part in HTML Basics and in the video part but its not … working? VS code editor is saying it doesn’t recognize the encoding and I am confused if I missed a part - at the beginning Mosh mentions [Sketch.com](http://Sketch.com) and I’m not sure why its being mentioned - am I supposed to download something there or - how is that relative to the section… I think he is just demonstrating a video on a webpage and it’s functionality. I don’t see that he says to do anything there specifically. All I know is that I followed what he did exactly and the editor says mp4 ( any video) is foreign encoding and the spot on the webpage is blank. Nuthin there. I can’t follow the rest of that lesson because it’s not working.
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**Author:**  [@Loislayna](https://forum.codewithmosh.com/u/Loislayna)\
**Post date:** [March 12, 2022, 9:06pm UTC](https://forum.codewithmosh.com/t/video-topic-part-1-html-basics/11224/2 "2022-03-12T21:06:11Z")
I attached the MPEG-4 preview extension but he didn’t say to do that and I have no idea how to use it lol
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**Author:**  [@Loislayna](https://forum.codewithmosh.com/u/Loislayna)\
**Post date:** [March 12, 2022, 9:10pm UTC](https://forum.codewithmosh.com/t/video-topic-part-1-html-basics/11224/3 "2022-03-12T21:10:01Z")
Can now preview it effectively - which is great but still cannot see it on the webpage… #freethevid