Remuxing and Lossless Codecs

[Jay123210599]

Are converting videos into lossless codecs the same as remuxing them into other formats without reencoding the video?

[davexnet]

Are converting videos into lossless codecs the same as remuxing them into other formats without reencoding the video?

In what sense? The video/audio will have the same quality, but the file sizes will be massive compared to the source

[Jay123210599]

Are converting videos into lossless codecs the same as remuxing them into other formats without reencoding the video?

In what sense? The video/audio will have the same quality, but the file sizes will be massive compared to the source

I want to make sure that the video won't lose any quality if I convert them into a lossless codec instead of remuxing them.

[Bwaak]

The way I understand it, remuxing means preserving the same codec, bitrate, etc as the original, and only changing the container. Also maybe adding or removing some streams, in particular audio streams. TL;DR - to me, remuxing means no re-encoding.

[Selur]

Are converting videos into lossless codecs the same as remuxing them into other formats without reencoding the video?

Remuxing is just a repackaging of the existing streams. No information gets lost, and size differences occur only due to differences of the used containers (or by removing data).

Converting video into lossless video will also not cause any information loss, but file size can change dramatically.
Lossless compression aims at lossless compressing uncompressed content, so if your content was highly compressed it will be first decompressed and then recompressed.
It is not the same as compressing something with zip or similar.