Remove VideoJS and clean the integration

Handle videos in:
- MD preview in notes: commit, issue/MR, MR diff
- New notes in: commit, issue/MR, MR diff
- Persisted notes in: commit, issue/MR, MR diff

Signed-off-by: Rémy Coutable <remy@rymai.me>

2 files changed, 15 insertions, 0 deletions

diff --git a/doc/markdown/img/video.mp4 b/doc/markdown/img/video.mp4
new file mode 100644
index 00000000000..1fc478842f5
--- /dev/null
+++ b/doc/markdown/img/video.mp4
diff --git a/doc/markdown/markdown.md b/doc/markdown/markdown.md
index fb2dd582754..d407eec2494 100644
--- a/doc/markdown/markdown.md
+++ b/doc/markdown/markdown.md
@@ -13,6 +13,7 @@
 * [Emoji](#emoji)
 * [Special GitLab references](#special-gitlab-references)
 * [Task Lists](#task-lists)
+* [Videos](#videos)
 
 **[Standard Markdown](#standard-markdown)**
 
@@ -281,6 +282,20 @@ You can add task lists to issues, merge requests and comments. To create a task
 
 Task lists can only be created in descriptions, not in titles. Task item state can be managed by editing the description's Markdown or by toggling the rendered check boxes.
 
+## Videos
+
+Image tags with a video extension are automatically converted to a video player.
+
+The valid video extensions are `.mp4`, `.m4v`, `.mov`, `.webm`, `.ogv`, and `.ogg`.
+
+    Here's a sample video:
+
+    ![Sample Video](img/video.mp4)
+
+Here's a sample video:
+
+![Sample Video](img/video.mp4)
+
 # Standard Markdown
 
 ## Headers