Adds an entry to the index associating offset to ts.
It is recommended to only add keyframe entries. force allows to bypass checks, such as whether the stream is (upstream)
seekable, another entry is already "close" to the new entry, etc.
| this | |
| offset |
offset of entry |
| ts |
timestamp associated with offset |
| key |
whether entry refers to keyframe |
| force |
add entry disregarding sanity checks |
|
bool indicating whether entry was added |