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What are the best practices for creating a 4K remux with 2 separate video streams for optimal quality and compatibility?

A 4K remux is a process of repackaging a 4K video file into a new container format without changing the video or audio quality.

When creating a 4K remux, it is ideal to keep two separate video streams - one for 4K and another for 1080p, to ensure optimal quality and compatibility.

For a 4K remux, the H.265/HEVC codec is commonly used due to its higher compression efficiency compared to H.264/AVC.

The bitrate of a 4K HDR video can range from 50Mbps to 100Mbps or more, while a 1080p video typically has a bitrate of 10Mbps to 30Mbps.

It is recommended to use a lossless or near-lossless remuxing method to avoid any loss of quality during the repackaging process.

When creating a 4K remux with two separate video streams, it is important to ensure that the metadata of both the videos is synchronized.

Using a high-quality media player such as VLC or Kodi is recommended for playing 4K remux files to ensure optimal video and audio quality.

It is important to note that remuxing a 4K HDR video will not affect its HDR metadata, which includes information such as color gamut, dynamic range, and HDR format.

The process of remuxing can be optimized by changing the settings in advanced software such as FFmpeg.

Using a Network Attached Storage (NAS) device with sufficient storage capacity and processing power is recommended for storing and serving 4K remux files.

For remote users, transcoding may be necessary to reduce the bitrate of the 4K remux file, which can be done using software such as Plex or Emby.

For optimal playback of 4K remux files, it is recommended to use an HDMI 2.0 or DisplayPort 1.4 connector and a TV or monitor that supports HDR10 or Dolby Vision.

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