CAP CAPX
Not possible

Convert CAP to CAPX

Can you convert CAP to CAPX?
QUICK ANSWER
Is it possible to convert CAP to CAPX?
No - not a direct conversion.

A .cap file holds raw network packet frames; .capx is a game project archive or music notation file depending on context. No tool can produce a .capx from network capture data because the source contains no game assets, music, or any relevant content.

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Last verified Oct 2026

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Why convert CAP to CAPX?

The .cap format is a binary network packet capture (libpcap) containing timestamped network frames, related to .pcap. The .capx format is a ZIP-based game project archive holding game logic and assets. These formats share the same extension by coincidence and have no overlapping data structures; the pairing appears in some databases because .cap is also used by Capella music notation software for its older binary format.

How to convert CAP to CAPX

Capella APP

If your .cap is a Capella music notation file (not a network capture), open it in Capella and use File > Save As to save it as .capx - the Capella XML format.

Programs that convert CAP

About these formats

Quality & what to watch

  • The .cap extension is shared by network captures, Capella music files, and several unrelated programs - check the file's origin before assuming its type.
  • Only a Capella music .cap file can legitimately become a .capx; a network packet capture .cap has no path to .capx.
  • If you need to work with a network .cap, open it in Wireshark to view or export the packet data.

Frequently asked questions

Why do some websites list a CAP-to-CAPX converter?
Those listings conflate two unrelated file types sharing the .cap extension: network packet captures and Capella music notation files. No tool actually performs this conversion.
How can I tell whether my `.cap` is a network capture or a Capella music file?
Check the file's origin. If it came from Wireshark, tcpdump, or any network tool it is a packet capture; if it came from Capella music software it is a notation file.
Can Wireshark open a Capella `.cap` file?
No. Wireshark only opens network packet captures and will report an error if given a Capella music file or any other non-capture .cap.