A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_LIVESTREAM_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "livestream.googleapis.com") used by MakeLivestreamServiceConnection().
GOOGLE_CLOUD_CPP_TRANSCODER_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "transcoder.googleapis.com") used by MakeTranscoderServiceConnection().
GOOGLE_CLOUD_CPP_VIDEO_STITCHER_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "videostitcher.googleapis.com") used by MakeVideoStitcherServiceConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::LoggingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-09 UTC."],[[["This document provides a comprehensive list of available versions for the C++ video library, ranging from version 2.37.0-rc (latest) down to 2.11.0, with links to documentation for each version."],["Environment variables can be used to configure the library's behavior, especially helpful when troubleshooting, and can override default settings for services like Livestream, Transcoder, and Video Stitcher."],["Tracing for gRPC calls can be enabled with `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, which will output request and response information, particularly useful when combined with the `GOOGLE_CLOUD_CPP_ENABLE_CLOG` variable to produce console output."],["The variable `GOOGLE_CLOUD_CPP_TRACING_OPTIONS=...` can be used to modify the behavior of gRPC tracing including output format and field truncation."],["The environment variable `GOOGLE_CLOUD_PROJECT=...` is used for examples and integration tests in order to configure the GCP project, which doesn't have an effect on the library itself."]]],[]]
