mcap-protobuf-support
Protobuf support for the Python MCAP library
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, carries a permissive MIT license, and solves a specific need for anyone working with MCAP files containing protobuf data. Install friction is low and the dependency chain is minimal.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.7 or later; the underlying mcap and protobuf packages must be installed and compatible.
- Low friction install with two straightforward runtime dependencies (mcap and protobuf).
- The package is actively maintained with a recent release and no known vulnerabilities.
License · maintenance · safety
permissive license (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions, making it safe to adopt in most projects.
last release 2025-12-24 (233 days) · last repo commit 2026-08-13 · 1,041 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 624,478 downloads/mo, #5,700 on PyPI
Alternatives
Verify before relying
pip install mcap-protobuf-support
from mcap.reader import MCAPReader
with MCAPReader(open('file.mcap', 'rb')) as reader:
for msg in reader.messages():
print(msg)- Whether protobuf schema registration or additional setup is required beyond installing the package
- Performance characteristics when reading large MCAP files with protobuf messages
What it is and what it does
mcap-protobuf-support is a plugin for the Python MCAP library that enables reading MCAP files containing protobuf-encoded messages. MCAP is a container format for time-series data commonly used in robotics and autonomous systems; this package bridges the gap between MCAP's file reading capabilities and protobuf message deserialization, allowing you to extract and work with protobuf messages stored in MCAP files.
The package is lightweight, depending only on mcap and protobuf, and integrates directly into the MCAP reader workflow. It's maintained by Foxglove and actively used in production environments for processing sensor data and logs from robotics systems.
Use it for
- Extract and deserialize protobuf messages from MCAP log files recorded by robotics systems
- Process time-series sensor data stored in MCAP format with protobuf message encoding
- Build data pipelines that read MCAP files and convert protobuf messages into Python objects for analysis
- Integrate MCAP protobuf support into existing robotics data processing workflows
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, carries a permissive MIT license, and solves a specific need for anyone working with MCAP files containing protobuf data. Install friction is low and the dependency chain is minimal.
Install
mcap-protobuf-support on PyPI
Before you install
Low friction install with two straightforward runtime dependencies (mcap and protobuf). The package is actively maintained with a recent release and no known vulnerabilities.
Requires Python 3.7 or later; the underlying mcap and protobuf packages must be installed and compatible.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions, making it safe to adopt in most projects.
Quickstart
pip install mcap-protobuf-support
from mcap.reader import MCAPReader
with MCAPReader(open('file.mcap', 'rb')) as reader:
for msg in reader.messages():
print(msg)Verify before relying
- Whether protobuf schema registration or additional setup is required beyond installing the package
- Performance characteristics when reading large MCAP files with protobuf messages
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesmcapprotobuf |
| Maintenance | Actively maintained 233 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 624,478 / month, #5,700 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | License :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3 |
Evidence: mcap_protobuf_support-0.5.4-py3-none-any.whl
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See also mcap-ros2-support · mcap · mcap-ros1-support · discord-protos · grpc-gateway-protoc-gen-openapiv2 · protobuf3-to-dict · foxglove-schemas-protobuf · pbspark · protobuf-py-ext · opentelemetry-proto