Crate vsd_mp4

Expand description

This crate contains a mp4 parser ported from shaka-player project. Also, some optional features are added for parsing subtitles and PSSH boxes.

Optional Features

The following are a list of [Cargo features][cargo-features] that can be enabled or disabled:

psshpssh
Mp4 PSSH box parser.
texttext-ttml or text-vtt
Mp4 parsers related to some subtitles text processing.

BoxType
An enum used to track the type of box so that the correct values can be read from the header.

alldata
Create a callback that tells the Mp4 parser to treat the body of a box as a binary blob and to parse the body’s contents using the provided callback.
children
A callback that tells the Mp4 parser to treat the body of a box as a series of boxes. The number of boxes is limited by the size of the parent box.
sample_description
A callback that tells the Mp4 parser to treat the body of a box as a sample description. A sample description box has a fixed number of children. The number of children is represented by a 4 byte unsigned integer. Each child is a box.
type_from_string
Convert an ascii string name to the integer type for a box. The name must be four characters long.
type_to_string
Convert an integer type from a box into an ascii string name. Useful for debugging.
visual_sample_entry
A callback that tells the Mp4 parser to treat the body of a box as a visual sample entry. A visual sample entry has some fixed-sized fields describing the video codec parameters, followed by an arbitrary number of appended children. Each child is a box.