Perf Investigation: Video Capture while spec is loading

[sync-by-unito]

Summary

Currently the video starts as soon as the browser opens, and ffmpeg eats up a ton of CPU. The webpack / esbuild preprocessor is also CPU intensive, so by nature of recording a video, it makes the time to initial test significantly slow, especially in component testing.

You can reproduce by running CT or E2E tests in run mode with/without video (--config video=false) and watch the CPU usage of the Cypress: Config Manager process and ffmpeg

There are also flags that we might be missing to help with the recording performance: https://github.com/microsoft/playwright/blob/5d8aa8d5cfdd6169c4eaad0ebaf53502f43de8df/packages/playwright-core/src/server/chromium/videoRecorder.ts#L59-L96

Acceptance Criteria

• Come up with a reproducible example and benchmarks the time to start with/without video, and with a delay in starting the video
• Determine if there are other flags we can use to reduce the overall cpu usage / speed up tests
• Come up with proposals for what we can change based on this investigation, and if/how this will affect product

┆Issue is synchronized with this Jira Task by Unito
┆author: Tim Griesser
┆epic: Testing / Quality
┆friendlyId: UNIFY-985
┆priority: Low
┆sprint: Backlog
┆taskType: Task

[sync-by-unito]

➤ Jennifer Shehane commented:

Delaying the video recording is not in scope for the initial unification release.

[cypress-app-bot]

This issue has not had any activity in 180 days. Cypress evolves quickly and the reported behavior should be tested on the latest version of Cypress to verify the behavior is still occurring. It will be closed in 14 days if no updates are provided.

[cypress-app-bot]

This issue has been closed due to inactivity.