'We failed to record the video' error in Firefox when running 2 spec files

[jennifer-shehane]

Current behavior:

When running cypress run --browser firefox over 2 specs files, the below warning is printed. This warning does not print when only running 1 spec file.

(Running in develop gives a slightly better stack trace, so I've pasted the warning from develop branch)

Error

Warning: We failed to record the video.

This error will not alter the exit code.

Error: ffmpeg exited with code 1: pipe:0: Function not implemented

    at ChildProcess.<anonymous> (/Users/jennifer/Dev/cypress/packages/server/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
    at ChildProcess.emit (events.js:203:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)

Warning: We failed processing this video.

This error will not alter the exit code.

Error: ffmpeg exited with code 1: pipe:0: Function not implemented

    at ChildProcess.<anonymous> (/Users/jennifer/Dev/cypress/packages/server/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
    at ChildProcess.emit (events.js:203:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
From previous event:
    at deferredPromise (/Users/jennifer/Dev/cypress/packages/server/lib/video_capture.js:21:19)
    at Object.start (/Users/jennifer/Dev/cypress/packages/server/lib/video_capture.js:65:19)
    at /Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:669:6
    at /Users/jennifer/Dev/cypress/packages/server/node_modules/fs-extra/lib/mkdirs/mkdirs.js:56:16
    at callback (/Users/jennifer/Dev/cypress/packages/server/node_modules/graceful-fs/polyfills.js:289:20)
    at FSReqCallback.oncomplete (fs.js:166:5)
From previous event:
    at Object.createVideoRecording (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:667:4)
    at Object.<anonymous> (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:724:15)
From previous event:
    at Object.runSpec (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1277:17)
    at runEachSpec (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1220:19)
From previous event:
    at serial (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:372:20)
    at iterateThroughSpecs (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:433:10)
    at Object.runSpecs (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1227:12)
    at runAllSpecs (/Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1399:25)
    at /Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1446:18
From previous event:
    at /Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1384:10
From previous event:
    at /Users/jennifer/Dev/cypress/packages/server/lib/modes/run.js:1358:8
    at processImmediate (internal/timers.js:439:21)

Debug logs around the warning:

  cypress:server:browsers killing browser process +2s
info @benmalka/foxdriver:Client connection closed by server
  cypress:server:preprocessor removeFile /Users/jennifer/Dev/cypress-transform-test/cypress/integration/spec2.js +1s
  cypress:server:preprocessor base emitter plugin close event +0ms
  cypress:server:preprocessor base emitter native close event +0ms
  cypress:browserify close: /Users/jennifer/Dev/cypress-transform-test/cypress/integration/spec2.js +1s
  cypress:browserify close: /Users/jennifer/Dev/cypress-transform-test/cypress/integration/spec2.js +0ms
  cypress:server:browsers browser process killed +48ms
  cypress:server:run ending the video recording { name: '/Users/jennifer/Dev/cypress-transform-test/cypress/videos/spec2.js.mp4', videoCompression: 32, shouldUploadVideo: true } +49ms
  cypress:server:video capture stderr log { message: 'pipe:0: Function not implemented' } +5s
  cypress:server:video capture stderr log { message: '' } +2ms
  cypress:server:video capture errored: { error: 'ffmpeg exited with code 1: pipe:0: Function not implemented\n', stdout: '', stderr: 'ffmpeg version N-92718-g092cb17983-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers\n' + '  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)\n' + '  configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavWarning: We failed to record the video.

This error will not alter the exit code.

Error: ffmpeg exited with code 1: pipe:0: Function not implemented

    at ChildProcess.<anonymous> (/Users/jennifer/Dev/cypress/packages/server/node_modules/fluent-ffmpeg/lib/processor.js:182:22)
    at ChildProcess.emit (events.js:203:13)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)

pack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay\n' + '  libavutil      56. 24.101 / 56. 24.101\n' + '  libavcodec     58. 42.102 / 58. 42.102\n' + '  libavformat    58. 24.101 / 58. 24.101\n' + '  libavdevice    58.  6.101 / 58.  6.101\n' + '  libavfilter     7. 46.101 /  7. 46.101\n' + '  libswscale      5.  4.100 /  5.  4.100\n' + '  libswresample   3.  4.100 /  3.  4.100\n' + '  libpostproc    55.  4.100 / 55.  4.100\n' + 'pipe:0: Function not implemented\n' } +2ms

Desired behavior:

Record video in Firefox for multiple spec files.

Test code to reproduce

spec.js

it('test', () => {
  expect(true).to.be.true
})

spec2.js

it('test', () => {
  expect(true).to.be.true
})

Versions

Cypress 4.0.0 and 4.0.1
Firefox 72
MacOS Mohave

[flotwig]

You can see this in CI here: https://circleci.com/gh/cypress-io/cypress/278863

Is this the same error that you get if ffmpeg hasn't received any frames at the time that the video recording ends? If so, it could be that the driver video-recorder hasn't sent any frames yet, for some reason

[cypress-bot]

The code for this is done in cypress-io/cypress#7192, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 4.6.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v4.6.0, please open a new issue.