app/javascript/mastodon/features/compose/components/compose_form.js

@@ -90,7 +90,7 @@ class ComposeForm extends ImmutablePureComponent {
     const fulltext = this.getFulltextForCharacterCounting();
     const isOnlyWhitespace = fulltext.length !== 0 && fulltext.trim().length === 0;
 
-    return !(isSubmitting || isUploading || isChangingUpload || length(fulltext) > 5000 || (isOnlyWhitespace && !anyMedia));
+    return !(isSubmitting || isUploading || isChangingUpload || length(fulltext) > 2500 || (isOnlyWhitespace && !anyMedia));
   };
 
   handleSubmit = (e) => {
@@ -280,7 +280,7 @@ class ComposeForm extends ImmutablePureComponent {
           </div>
 
           <div className='character-counter__wrapper'>
-            <CharacterCounter max={5000} text={this.getFulltextForCharacterCounting()} />
+            <CharacterCounter max={2500} text={this.getFulltextForCharacterCounting()} />
           </div>
         </div>
 

app/models/media_attachment.rb

@@ -39,7 +39,7 @@ class MediaAttachment < ApplicationRecord
   MAX_DESCRIPTION_LENGTH = 1_500
 
   IMAGE_LIMIT = 10.megabytes
-  VIDEO_LIMIT = 100.megabytes
+  VIDEO_LIMIT = 80.megabytes
 
   MAX_VIDEO_MATRIX_LIMIT = 2_304_000 # 1920x1200px
   MAX_VIDEO_FRAME_RATE   = 60

app/validators/status_length_validator.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class StatusLengthValidator < ActiveModel::Validator
-  MAX_CHARS = 5000
+  MAX_CHARS = 2500
   URL_PLACEHOLDER_CHARS = 23
   URL_PLACEHOLDER = 'x' * 23