Function export_multi 

pub fn export_multi(
    input: &Path,
    opts: &MultiExportOptions,
) -> Result<MultiExportReport, ExportError>

Export packets from input to one or more simultaneous outputs in a single streaming pass.

A bounded channel decouples the PCAP producer thread from the consumer thread that fans each record out to all sinks. Memory usage is O(channel capacity + per-sink buffer) regardless of capture size.

Errors

Returns ExportError on I/O failure, format detection failure, or serialisation error. If any sink fails mid-stream the producer is signalled to stop and the first error is returned.