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API > API/Plugins > API/Plugins/MP4Muxer > API/Plugins/MP4Muxer/IMP4RawMuxer
Description
Adds a sample to be written into the specified track as a response to a sample request made by the `FRequestTrackDataDelegate_. Data provided by the ArrayView will be copied into the muxer and can be released on the user side.
| Name | AddTrackSample |
| Type | function |
| Header File | /Engine/Plugins/Media/MP4Utilities/Source/MP4Muxer/Public/MP4Muxer.h |
| Include Path | #include "MP4Muxer.h" |
bool AddTrackSample
(
int32 InTrack,
const FTrackSample & InTrackSample
)