Rendering almost always will change the file. The only way to make an EXACT copy is to copy the file thru Windows. If you alter the video in any way (such as a render) it will be changed. The best you can do is render an Uncompressed file, but most people find these file sizes daunting.
There are some codecs that will give you a visually lossless render.
The process of rendering the same format without recompression is called "smart rendering". Vegas Pro can't smart render the type of formats that the Nikon D5200 shoots. There are ways to do it involving ffmpeg. Here's my very complex workflow to do it with Panasonic GH4 clips. You can also use ffmpeg via the smart trim feature in Vegasaur.
Alternatively you could install a lossless codec like MagicYUV and render lossless files directly from Vegas, but they will be much bigger file size than the originals.
Are you trying to render individual clips or an edited piece comprising multiple clips? What is the purpose for the rendered files?
The process of rendering the same format without recompression is called "smart rendering". Vegas Pro can't smart render the type of formats that the Nikon D5200 shoots. There are ways to do it involving ffmpeg. Here's my very complex workflow to do it with Panasonic GH4 clips. You can also use ffmpeg via the smart trim feature in Vegasaur.
Alternatively you could install a lossless codec like MagicYUV and render lossless files directly from Vegas, but they will be much bigger file size than the originals.
Are you trying to render individual clips or an edited piece comprising multiple clips? What is the purpose for the rendered files?
I intend to render an edited piece, compricing multiple clips, all of them with the same origin.