In many ways, derived containers are similar to those on which they are based, sometimes extending them, sometimes limiting their capabilities.
Support level legend: Full Indirect, lossless Partial Depends on setup None Some features are only supported by a few containers: Some common multimedia file formats are not completely distinct container formats.
Some are containers for specific audio and video coding formats, such as WebM, a subset of Matroska.
Support level legend: Full Indirect, lossless Partial, lossy Depends on setup None Some containers only support a restricted set of subtitle formats: Converting image subtitles to text formats is possible using third-party tools[128] but relies on optical character recognition, which is not perfectly accurate and can at best extract basic formatting.
In this sense, muxing overhead is the control information added by the container to carry interleaved streams.