diff --git a/.github/actions/reusable-prepare-peertube-run/action.yml b/.github/actions/reusable-prepare-peertube-run/action.yml
index 1a6cd2cfd..aa5b897c9 100644
--- a/.github/actions/reusable-prepare-peertube-run/action.yml
+++ b/.github/actions/reusable-prepare-peertube-run/action.yml
@@ -8,7 +8,7 @@ runs:
     - name: Setup system dependencies
       shell: bash
       run: |
-        sudo apt-get install postgresql-client-common redis-tools parallel
+        sudo apt-get install postgresql-client-common redis-tools parallel libimage-exiftool-perl
         wget --quiet --no-check-certificate "https://download.cpy.re/ffmpeg/ffmpeg-release-4.3.1-64bit-static.tar.xz"
         tar xf ffmpeg-release-4.3.1-64bit-static.tar.xz
         mkdir -p $HOME/bin
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2dfd9fd1c..e5e69b3f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,23 @@
 # Changelog
 
+## v4.1.1
+
+### Security
+
+ * Strip EXIF data when processing images
+
+### Docker
+
+ * Fix videos import by installing python 3
+ * Install `git` package (may be needed to install some plugins)
+
+### Bug fixes
+
+ * Fix error when updating a live
+ * Fix performance regression when rendering HTML and feeds
+ * Fix player stuck by HTTP request error
+
+
 ## v4.1.0
 
 ### IMPORTANT NOTES
diff --git a/client/package.json b/client/package.json
index 26ca15210..690e3b982 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "peertube-client",
-  "version": "4.1.0",
+  "version": "4.1.1",
   "private": true,
   "license": "AGPL-3.0",
   "author": {
diff --git a/package.json b/package.json
index d96f9675c..fd94620dd 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "peertube",
   "description": "PeerTube, an ActivityPub-federated video streaming platform using P2P directly in your web browser.",
-  "version": "4.1.0",
+  "version": "4.1.1",
   "private": true,
   "licence": "AGPL-3.0",
   "engines": {
diff --git a/server/helpers/image-utils.ts b/server/helpers/image-utils.ts
index 9d0c09051..7d6451db9 100644
--- a/server/helpers/image-utils.ts
+++ b/server/helpers/image-utils.ts
@@ -118,6 +118,8 @@ async function autoResize (options: {
   const sourceIsPortrait = sourceImage.getWidth() < sourceImage.getHeight()
   const destIsPortraitOrSquare = newSize.width <= newSize.height
 
+  removeExif(sourceImage)
+
   if (sourceIsPortrait && !destIsPortraitOrSquare) {
     const baseImage = sourceImage.cloneQuiet().cover(newSize.width, newSize.height)
                                               .color([ { apply: 'shade', params: [ 50 ] } ])
@@ -144,6 +146,7 @@ function skipProcessing (options: {
   const { sourceImage, newSize, imageBytes, inputExt, outputExt } = options
   const { width, height } = newSize
 
+  if (hasExif(sourceImage)) return false
   if (sourceImage.getWidth() > width || sourceImage.getHeight() > height) return false
   if (inputExt !== outputExt) return false
 
@@ -154,3 +157,11 @@ function skipProcessing (options: {
 
   return imageBytes <= 15 * kB
 }
+
+function hasExif (image: Jimp) {
+  return !!(image.bitmap as any).exifBuffer
+}
+
+function removeExif (image: Jimp) {
+  (image.bitmap as any).exifBuffer = null
+}
diff --git a/server/helpers/markdown.ts b/server/helpers/markdown.ts
index 41c1186ec..a20ac22d4 100644
--- a/server/helpers/markdown.ts
+++ b/server/helpers/markdown.ts
@@ -7,8 +7,13 @@ const sanitizeHtml = require('sanitize-html')
 const markdownItEmoji = require('markdown-it-emoji/light')
 const MarkdownItClass = require('markdown-it')
 
-const markdownItWithHTML = new MarkdownItClass('default', { linkify: true, breaks: true, html: true })
-const markdownItWithoutHTML = new MarkdownItClass('default', { linkify: false, breaks: true, html: false })
+const markdownItForSafeHtml = new MarkdownItClass('default', { linkify: true, breaks: true, html: true })
+  .enable(TEXT_WITH_HTML_RULES)
+  .use(markdownItEmoji)
+
+const markdownItForPlainText = new MarkdownItClass('default', { linkify: false, breaks: true, html: false })
+  .use(markdownItEmoji)
+  .use(plainTextPlugin)
 
 const toSafeHtml = (text: string) => {
   if (!text) return ''
@@ -17,9 +22,7 @@ const toSafeHtml = (text: string) => {
   const textWithLineFeed = text.replace(/<br.?\/?>/g, '\r\n')
 
   // Convert possible markdown (emojis, emphasis and lists) to html
-  const html = markdownItWithHTML.enable(TEXT_WITH_HTML_RULES)
-                                 .use(markdownItEmoji)
-                                 .render(textWithLineFeed)
+  const html = markdownItForSafeHtml.render(textWithLineFeed)
 
   // Convert to safe Html
   return sanitizeHtml(html, defaultSanitizeOptions)
@@ -28,12 +31,10 @@ const toSafeHtml = (text: string) => {
 const mdToOneLinePlainText = (text: string) => {
   if (!text) return ''
 
-  markdownItWithoutHTML.use(markdownItEmoji)
-                       .use(plainTextPlugin)
-                       .render(text)
+  markdownItForPlainText.render(text)
 
   // Convert to safe Html
-  return sanitizeHtml(markdownItWithoutHTML.plainText, textOnlySanitizeOptions)
+  return sanitizeHtml(markdownItForPlainText.plainText, textOnlySanitizeOptions)
 }
 
 // ---------------------------------------------------------------------------
@@ -47,30 +48,38 @@ export {
 
 // Thanks: https://github.com/wavesheep/markdown-it-plain-text
 function plainTextPlugin (markdownIt: any) {
-  let lastSeparator = ''
-
   function plainTextRule (state: any) {
     const text = scan(state.tokens)
 
-    markdownIt.plainText = text.replace(/\s+/g, ' ')
+    markdownIt.plainText = text
   }
 
   function scan (tokens: any[]) {
+    let lastSeparator = ''
     let text = ''
 
-    for (const token of tokens) {
-      if (token.children !== null) {
-        text += scan(token.children)
-        continue
-      }
-
+    function buildSeparator (token: any) {
       if (token.type === 'list_item_close') {
         lastSeparator = ', '
-      } else if (token.type.endsWith('_close')) {
+      }
+
+      if (token.tag === 'br' || token.type === 'paragraph_close') {
         lastSeparator = ' '
-      } else if (token.content) {
-        text += lastSeparator
-        text += token.content
+      }
+    }
+
+    for (const token of tokens) {
+      buildSeparator(token)
+
+      if (token.type !== 'inline') continue
+
+      for (const child of token.children) {
+        buildSeparator(child)
+
+        if (!child.content) continue
+
+        text += lastSeparator + child.content
+        lastSeparator = ''
       }
     }
 
diff --git a/server/middlewares/validators/videos/video-transcoding.ts b/server/middlewares/validators/videos/video-transcoding.ts
index 34f231d45..da6638f4d 100644
--- a/server/middlewares/validators/videos/video-transcoding.ts
+++ b/server/middlewares/validators/videos/video-transcoding.ts
@@ -37,7 +37,7 @@ const createTranscodingValidator = [
 
     // Prefer using job info table instead of video state because before 4.0 failed transcoded video were stuck in "TO_TRANSCODE" state
     const info = await VideoJobInfoModel.load(video.id)
-    if (info && info.pendingTranscode !== 0) {
+    if (info && info.pendingTranscode > 0) {
       return res.fail({
         status: HttpStatusCode.CONFLICT_409,
         message: 'This video is already being transcoded'
diff --git a/server/tests/fixtures/banner-resized.jpg b/server/tests/fixtures/banner-resized.jpg
index 13ea422cb..952732d61 100644
Binary files a/server/tests/fixtures/banner-resized.jpg and b/server/tests/fixtures/banner-resized.jpg differ
diff --git a/server/tests/fixtures/exif.jpg b/server/tests/fixtures/exif.jpg
new file mode 100644
index 000000000..2997b38e9
Binary files /dev/null and b/server/tests/fixtures/exif.jpg differ
diff --git a/server/tests/fixtures/exif.png b/server/tests/fixtures/exif.png
new file mode 100644
index 000000000..a1a0113f8
Binary files /dev/null and b/server/tests/fixtures/exif.png differ
diff --git a/server/tests/helpers/image.ts b/server/tests/helpers/image.ts
index 64bd373cc..475ca8fb2 100644
--- a/server/tests/helpers/image.ts
+++ b/server/tests/helpers/image.ts
@@ -4,6 +4,7 @@ import 'mocha'
 import { expect } from 'chai'
 import { readFile, remove } from 'fs-extra'
 import { join } from 'path'
+import { execPromise } from '@server/helpers/core-utils'
 import { buildAbsoluteFixturePath, root } from '@shared/core-utils'
 import { processImage } from '../../../server/helpers/image-utils'
 
@@ -20,40 +21,77 @@ async function checkBuffers (path1: string, path2: string, equals: boolean) {
   }
 }
 
+async function hasTitleExif (path: string) {
+  const result = JSON.parse(await execPromise(`exiftool -json ${path}`))
+
+  return result[0]?.Title === 'should be removed'
+}
+
 describe('Image helpers', function () {
   const imageDestDir = join(root(), 'test-images')
-  const imageDest = join(imageDestDir, 'test.jpg')
+
+  const imageDestJPG = join(imageDestDir, 'test.jpg')
+  const imageDestPNG = join(imageDestDir, 'test.png')
+
   const thumbnailSize = { width: 223, height: 122 }
 
   it('Should skip processing if the source image is okay', async function () {
     const input = buildAbsoluteFixturePath('thumbnail.jpg')
-    await processImage(input, imageDest, thumbnailSize, true)
+    await processImage(input, imageDestJPG, thumbnailSize, true)
 
-    await checkBuffers(input, imageDest, true)
+    await checkBuffers(input, imageDestJPG, true)
   })
 
   it('Should not skip processing if the source image does not have the appropriate extension', async function () {
     const input = buildAbsoluteFixturePath('thumbnail.png')
-    await processImage(input, imageDest, thumbnailSize, true)
+    await processImage(input, imageDestJPG, thumbnailSize, true)
 
-    await checkBuffers(input, imageDest, false)
+    await checkBuffers(input, imageDestJPG, false)
   })
 
   it('Should not skip processing if the source image does not have the appropriate size', async function () {
     const input = buildAbsoluteFixturePath('preview.jpg')
-    await processImage(input, imageDest, thumbnailSize, true)
+    await processImage(input, imageDestJPG, thumbnailSize, true)
 
-    await checkBuffers(input, imageDest, false)
+    await checkBuffers(input, imageDestJPG, false)
   })
 
   it('Should not skip processing if the source image does not have the appropriate size', async function () {
     const input = buildAbsoluteFixturePath('thumbnail-big.jpg')
-    await processImage(input, imageDest, thumbnailSize, true)
+    await processImage(input, imageDestJPG, thumbnailSize, true)
 
-    await checkBuffers(input, imageDest, false)
+    await checkBuffers(input, imageDestJPG, false)
+  })
+
+  it('Should strip exif for a jpg file that can not be copied', async function () {
+    const input = buildAbsoluteFixturePath('exif.jpg')
+    expect(await hasTitleExif(input)).to.be.true
+
+    await processImage(input, imageDestJPG, { width: 100, height: 100 }, true)
+    await checkBuffers(input, imageDestJPG, false)
+
+    expect(await hasTitleExif(imageDestJPG)).to.be.false
+  })
+
+  it('Should strip exif for a jpg file that could be copied', async function () {
+    const input = buildAbsoluteFixturePath('exif.jpg')
+    expect(await hasTitleExif(input)).to.be.true
+
+    await processImage(input, imageDestJPG, thumbnailSize, true)
+    await checkBuffers(input, imageDestJPG, false)
+
+    expect(await hasTitleExif(imageDestJPG)).to.be.false
+  })
+
+  it('Should strip exif for png', async function () {
+    const input = buildAbsoluteFixturePath('exif.png')
+    expect(await hasTitleExif(input)).to.be.true
+
+    await processImage(input, imageDestPNG, thumbnailSize, true)
+    expect(await hasTitleExif(imageDestPNG)).to.be.false
   })
 
   after(async function () {
-    await remove(imageDest)
+    await remove(imageDestDir)
   })
 })
diff --git a/server/tests/helpers/markdown.ts b/server/tests/helpers/markdown.ts
index 0488a1a05..8177477f6 100644
--- a/server/tests/helpers/markdown.ts
+++ b/server/tests/helpers/markdown.ts
@@ -30,5 +30,11 @@ describe('Markdown helpers', function () {
 
       expect(result).to.equal('Hello coucou')
     })
+
+    it('Should convert tags to plain text', function () {
+      const result = mdToOneLinePlainText(`#déconversion\n#newage\n#histoire`)
+
+      expect(result).to.equal('#déconversion #newage #histoire')
+    })
   })
 })
diff --git a/server/tests/shared/checks.ts b/server/tests/shared/checks.ts
index 9ecc84b5d..dcc16d7ea 100644
--- a/server/tests/shared/checks.ts
+++ b/server/tests/shared/checks.ts
@@ -25,21 +25,21 @@ async function expectLogDoesNotContain (server: PeerTubeServer, str: string) {
   expect(content.toString()).to.not.contain(str)
 }
 
-async function testImage (url: string, imageName: string, imagePath: string, extension = '.jpg') {
+async function testImage (url: string, imageName: string, imageHTTPPath: string, extension = '.jpg') {
   const res = await makeGetRequest({
     url,
-    path: imagePath,
+    path: imageHTTPPath,
     expectedStatus: HttpStatusCode.OK_200
   })
 
   const body = res.body
 
   const data = await readFile(join(root(), 'server', 'tests', 'fixtures', imageName + extension))
-  const minLength = body.length - ((30 * body.length) / 100)
-  const maxLength = body.length + ((30 * body.length) / 100)
+  const minLength = data.length - ((40 * data.length) / 100)
+  const maxLength = data.length + ((40 * data.length) / 100)
 
-  expect(data.length).to.be.above(minLength, 'the generated image is way smaller than the recorded fixture')
-  expect(data.length).to.be.below(maxLength, 'the generated image is way larger than the recorded fixture')
+  expect(body.length).to.be.above(minLength, 'the generated image is way smaller than the recorded fixture')
+  expect(body.length).to.be.below(maxLength, 'the generated image is way larger than the recorded fixture')
 }
 
 async function testFileExistsOrNot (server: PeerTubeServer, directory: string, filePath: string, exist: boolean) {
diff --git a/support/doc/development/tests.md b/support/doc/development/tests.md
index 02fc41147..47602156c 100644
--- a/support/doc/development/tests.md
+++ b/support/doc/development/tests.md
@@ -31,6 +31,12 @@ $ sudo docker run -p 9444:9000 chocobozzz/s3-ninja
 $ sudo docker run -p 10389:10389 chocobozzz/docker-test-openldap
 ```
 
+Ensure you also have these commands:
+
+```
+$ exiftool --help
+```
+
 ### Test
 
 To run all test suites:
@@ -39,7 +45,7 @@ To run all test suites:
 $ npm run test # See scripts/test.sh to run a particular suite
 ```
 
-Most of tests can be runned using:
+Most of tests can be run using:
 
 ```bash
 TS_NODE_TRANSPILE_ONLY=true npm run mocha -- --timeout 30000 --exit -r ts-node/register -r tsconfig-paths/register --bail server/tests/api/videos/video-transcoder.ts
diff --git a/support/docker/production/Dockerfile.bullseye b/support/docker/production/Dockerfile.bullseye
index e55da3307..c57b878ee 100644
--- a/support/docker/production/Dockerfile.bullseye
+++ b/support/docker/production/Dockerfile.bullseye
@@ -2,7 +2,7 @@ FROM node:14-bullseye-slim
 
 # Install dependencies
 RUN apt update \
- && apt install -y --no-install-recommends openssl ffmpeg python3 ca-certificates gnupg gosu build-essential curl \
+ && apt install -y --no-install-recommends openssl ffmpeg python3 ca-certificates gnupg gosu build-essential curl git \
  && gosu nobody true \
  && rm /var/lib/apt/lists/* -fR