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MF_E_NO_SOURCE_IN_CACHE
MF_E_NO_SOURCE_IN_CACHE is specific to the Sequencer Source's management of native media sources. Segment topologies reference source nodes, and the sequencer maintains a source cache so those sources can be reused and managed across the sequence.
Check segment topology and cache lifetime
- Verify that the segment topology still contains valid source nodes with source, presentation descriptor, and stream descriptor objects.
- When replacing a topology with
UpdateTopology, remember that new native sources are added to the source cache and the preroll list is refreshed. - Do not reuse a segment presentation or topology from a sequencer instance that has already been shut down and recreated.
This is not the same as the Source Resolver failing to open a URL. The failure occurs inside sequencer bookkeeping after a segment/source relationship should already exist.
Microsoft: Sequencer Source topology updates and source cache · Microsoft: Sequencer Source example · Microsoft: source topology nodes
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