2 files changed, 14 insertions, 3 deletions

diff --git a/server/tests/shared/checks.ts b/server/tests/shared/checks.ts
index feaef37c6..90179c6ac 100644
--- a/server/tests/shared/checks.ts
+++ b/server/tests/shared/checks.ts
@@ -61,6 +61,16 @@ async function testImageSize (url: string, imageName: string, imageHTTPPath: str
   expect(body.length).to.be.below(maxLength, 'the generated image is way larger than the recorded fixture')
 }
 
+async function testImageGeneratedByFFmpeg (url: string, imageName: string, imageHTTPPath: string, extension = '.jpg') {
+  if (process.env.ENABLE_FFMPEG_THUMBNAIL_PIXEL_COMPARISON_TESTS !== 'true') {
+    console.log(
+      'Pixel comparison of image generated by ffmpeg is disabled. ' +
+      'You can enable it using `ENABLE_FFMPEG_THUMBNAIL_PIXEL_COMPARISON_TESTS=true env variable')
+  }
+
+  return testImage(url, imageName, imageHTTPPath, extension)
+}
+
 async function testImage (url: string, imageName: string, imageHTTPPath: string, extension = '.jpg') {
   const res = await makeGetRequest({
     url,
@@ -148,6 +158,7 @@ async function checkVideoDuration (server: PeerTubeServer, videoUUID: string, du
 
 export {
   dateIsValid,
+  testImageGeneratedByFFmpeg,
   testImageSize,
   testImage,
   expectLogDoesNotContain,
diff --git a/server/tests/shared/videos.ts b/server/tests/shared/videos.ts
index 856fabd11..0bd161820 100644
--- a/server/tests/shared/videos.ts
+++ b/server/tests/shared/videos.ts
@@ -7,7 +7,7 @@ import { loadLanguages, VIDEO_CATEGORIES, VIDEO_LANGUAGES, VIDEO_LICENCES, VIDEO
 import { getLowercaseExtension, pick, uuidRegex } from '@shared/core-utils'
 import { HttpStatusCode, VideoCaption, VideoDetails, VideoPrivacy, VideoResolution } from '@shared/models'
 import { makeRawRequest, PeerTubeServer, VideoEdit, waitJobs } from '@shared/server-commands'
-import { dateIsValid, expectStartWith, testImage } from './checks'
+import { dateIsValid, expectStartWith, testImageGeneratedByFFmpeg } from './checks'
 import { checkWebTorrentWorks } from './webtorrent'
 
 loadLanguages()
@@ -197,11 +197,11 @@ async function completeVideoCheck (options: {
   expect(video.downloadEnabled).to.equal(attributes.downloadEnabled)
 
   expect(video.thumbnailPath).to.exist
-  await testImage(server.url, attributes.thumbnailfile || attributes.fixture, video.thumbnailPath)
+  await testImageGeneratedByFFmpeg(server.url, attributes.thumbnailfile || attributes.fixture, video.thumbnailPath)
 
   if (attributes.previewfile) {
     expect(video.previewPath).to.exist
-    await testImage(server.url, attributes.previewfile, video.previewPath)
+    await testImageGeneratedByFFmpeg(server.url, attributes.previewfile, video.previewPath)
   }
 
   await completeWebVideoFilesCheck({ server, originServer, videoUUID: video.uuid, ...pick(attributes, [ 'fixture', 'files' ]) })