I'm relatively new to video-editing and am only somewhat confident in my understanding of the term 'remux'. In my case, I have .flv files recorded by OBS Studio, and I'm using its built-in Remux tool to convert them to MP4.
As I understand it, the Remux tool is simply changing the container of the underlying video and audio data from FLV to MP4 without re-encoding either the video or audio -- which is great, because that should mean that there is no degradation in quality, right?
What confuses me, though, is that it's still a 20-minute operation on an hour-and-a-half recording (recorded at a high bitrate of 30Mbps, given). If it's just moving some meta-data around (changing the container?), why does it take more than a second?
Also, when it creates the remuxed MP4 file, is the moov atom placed at the start of the file (good for YouTube) or saved to the end of the file (OBS Studio's typical MP4 recording behavior, since, obviously, it doesn't know how long the file is going to be until it finishes recording)?
Thank you for your insight!
As I understand it, the Remux tool is simply changing the container of the underlying video and audio data from FLV to MP4 without re-encoding either the video or audio -- which is great, because that should mean that there is no degradation in quality, right?
What confuses me, though, is that it's still a 20-minute operation on an hour-and-a-half recording (recorded at a high bitrate of 30Mbps, given). If it's just moving some meta-data around (changing the container?), why does it take more than a second?
Also, when it creates the remuxed MP4 file, is the moov atom placed at the start of the file (good for YouTube) or saved to the end of the file (OBS Studio's typical MP4 recording behavior, since, obviously, it doesn't know how long the file is going to be until it finishes recording)?
Thank you for your insight!