BLD-844: Add possibility to download transcripts in different formats.

CHANGELOG.rst

@@ -5,6 +5,8 @@ These are notable changes in edx-platform.  This is a rolling list of changes,
 in roughly chronological order, most recent first.  Add your entries at or near
 the top.  Include a label indicating the component affected.
 
+Blades: Add .txt and .srt options to the "download transcript" button. BLD-844.
+
 Blades: Fix bug when transcript cutting off view in full view mode. BLD-852.
 
 Blades: Show start time or starting position on slider and VCR. BLD-823.

cms/static/sass/elements/_xmodules.scss

@@ -22,6 +22,15 @@
     .video-controls .add-fullscreen {
       display: none !important; // nasty, but needed to override the bad specificity of the xmodule css selectors
     }
+
+    .video-tracks {
+      .a11y-menu-container {
+        .a11y-menu-list {
+          bottom: 100%;
+          top: auto;
+        }
+      }
+    }
   }
 }
 

common/lib/xmodule/xmodule/css/video/accessible_menu.scss

+$gray: rgb(127, 127, 127);
+$blue: rgb(0, 159, 230);
+$gray-d1: shade($gray,20%);
+$gray-l2: tint($gray,40%);
+$gray-l3: tint($gray,60%);
+$blue-s1: saturate($blue,15%);
+
+%use-font-awesome {
+  font-family: FontAwesome;
+  -webkit-font-smoothing: antialiased;
+  display: inline-block;
+  speak: none;
+}
+
+.a11y-menu-container {
+  position: relative;
+
+  &.open {
+    .a11y-menu-list {
+      display: block;
+    }
+  }
+
+  .a11y-menu-list {
+    top: 100%;
+    margin: 0;
+    padding: 0;
+    display: none;
+    position: absolute;
+    z-index: 10;
+    list-style: none;
+    background-color: $white;
+    border: 1px solid #eee;
+
+    li {
+      margin: 0;
+      padding: 0;
+      border-bottom: 1px solid #eee;
+      color: $white;
+      cursor: pointer;
+
+      a {
+        display: block;
+        overflow: hidden;
+        text-overflow: ellipsis;
+        white-space: nowrap;
+        color: $gray-l2;
+        font-size: 14px;
+        line-height: 23px;
+
+        &:hover {
+          color: $gray-d1;
+        }
+      }
+
+      &.active{
+        a {
+          color: $blue;
+        }
+      }
+
+      &:last-child {
+        box-shadow: none;
+        border-bottom: 0;
+        margin-top: 0;
+      }
+    }
+  }
+}
+
+
+// Video track button specific styles
+
+.video-tracks {
+  .a11y-menu-container {
+    display: inline-block;
+    vertical-align: top;
+    border-left: 1px solid #eee;
+
+    &.open {
+      > a {
+        background-color: $action-primary-active-bg;
+        color: $very-light-text;
+
+        &:after {
+          color: $very-light-text;
+        }
+      }
+
+    }
+
+    > a {
+      @include transition(all 0.25s ease-in-out 0s);
+      @include font-size(12);
+      display: block;
+      border-radius: 0 3px 3px 0;
+      background-color: $very-light-text;
+      padding: ($baseline*.75 $baseline*1.25 $baseline*.75 $baseline*.75);
+      color: $gray-l2;
+      min-width: 1.5em;
+      line-height: 14px;
+      text-align: center;
+      overflow: hidden;
+      text-overflow: ellipsis;
+
+      &:after {
+        @extend %use-font-awesome;
+        content: "\f0d7";
+        position: absolute;
+        right: ($baseline*.5);
+        top: 33%;
+        color: $lighter-base-font-color;
+      }
+    }
+
+    .a11y-menu-list {
+      right: 0;
+
+      li {
+        font-size: em(14);
+
+        a {
+          border: 0;
+          display: block;
+          padding: lh(.5);
+          overflow: hidden;
+          text-overflow: ellipsis;
+          white-space: nowrap;
+        }
+      }
+    }
+  }
+}

common/lib/xmodule/xmodule/css/video/display.scss

@@ -46,13 +46,15 @@ div.video {
     .video-sources,
     .video-tracks {
       display: inline-block;
+      vertical-align: top;
       margin: ($baseline*.75) ($baseline/2) 0 0;
 
-      a {
+      > a {
         @include transition(all 0.25s ease-in-out 0s);
         @include font-size(14);
-        display: inline-block;
-        border-radius: 3px 3px 3px 3px;
+        line-height : 14px;
+        float: left;
+        border-radius: 3px;
         background-color: $very-light-text;
         padding: ($baseline*.75);
         color: $lighter-base-font-color;
@@ -62,7 +64,14 @@ div.video {
           color: $very-light-text;
         }
       }
-
+    }
+    .video-tracks {
+      > a {
+        border-radius: 3px 0 0 3px;
+      }
+      > a.external-track {
+        border-radius: 3px;
+      }
     }
   }
 

common/lib/xmodule/xmodule/js/fixtures/video_all.html

@@ -69,6 +69,23 @@
         </div>
 
         <div class="focus_grabber last"></div>
+
+        <ul class="wrapper-downloads">
+          <li class="video-tracks">
+            <div class="a11y-menu-container">
+                <a class="a11y-menu-button" href="#" title=".srt">.srt</a>
+                <ol class="a11y-menu-list">
+                  <li class="a11y-menu-item">
+                    <a class="a11y-menu-item-link" href="#txt" title="Text (.txt) file" data-value="txt">Text (.txt) file</a>
+                  </li>
+                  <li class="a11y-menu-item active">
+                    <a class="a11y-menu-item-link" href="#srt" title="SubRip (.srt) file" data-value="srt">SubRip (.srt) file</a>
+                  </li>
+                </ol>
+            </div>
+          </li>
+        </ul>
+
       </div>
     </div>
   </div>

common/lib/xmodule/xmodule/js/src/video/10_main.js

@@ -42,6 +42,7 @@ require(
 [
     'video/01_initialize.js',
     'video/025_focus_grabber.js',
+    'video/035_video_accessible_menu.js',
     'video/04_video_control.js',
     'video/05_video_quality_control.js',
     'video/06_video_progress_slider.js',
@@ -52,6 +53,7 @@ require(
 function (
     Initialize,
     FocusGrabber,
+    VideoAccessibleMenu,
     VideoControl,
     VideoQualityControl,
     VideoProgressSlider,
@@ -87,6 +89,7 @@ function (
 
         state.modules = [
             FocusGrabber,
+            VideoAccessibleMenu,
             VideoControl,
             VideoQualityControl,
             VideoProgressSlider,

common/lib/xmodule/xmodule/video_module/video_module.py

@@ -13,6 +13,7 @@ in XML.
 import json
 import logging
 from operator import itemgetter
+from HTMLParser import HTMLParser
 
 from lxml import etree
 from pkg_resources import resource_string
@@ -155,6 +156,15 @@ class VideoFields(object):
         scope=Scope.preferences,
         default="en"
     )
+    transcript_download_format = String(
+        help="Transcript file format to download by user.",
+        scope=Scope.preferences,
+        values=[
+            {"display_name": "SubRip (.srt) file", "value": "srt"},
+            {"display_name": "Text (.txt) file", "value": "txt"}
+        ],
+        default='srt',
+    )
     speed = Float(
         help="The last speed that was explicitly set by user for the video.",
         scope=Scope.user_state,
@@ -193,6 +203,7 @@ class VideoModule(VideoFields, XModule):
             resource_string(module, 'js/src/video/025_focus_grabber.js'),
             resource_string(module, 'js/src/video/02_html5_video.js'),
             resource_string(module, 'js/src/video/03_video_player.js'),
+            resource_string(module, 'js/src/video/035_video_accessible_menu.js'),
             resource_string(module, 'js/src/video/04_video_control.js'),
             resource_string(module, 'js/src/video/05_video_quality_control.js'),
             resource_string(module, 'js/src/video/06_video_progress_slider.js'),
@@ -202,20 +213,33 @@ class VideoModule(VideoFields, XModule):
             resource_string(module, 'js/src/video/10_main.js')
         ]
     }
-    css = {'scss': [resource_string(module, 'css/video/display.scss')]}
+    css = {'scss': [
+        resource_string(module, 'css/video/display.scss'),
+        resource_string(module, 'css/video/accessible_menu.scss'),
+    ]}
     js_module_name = "Video"
 
     def handle_ajax(self, dispatch, data):
-        accepted_keys = ['speed', 'saved_video_position', 'transcript_language']
-        if dispatch == 'save_user_state':
+        accepted_keys = [
+            'speed', 'saved_video_position', 'transcript_language',
+            'transcript_download_format',
+        ]
+
+        conversions = {
+            'speed': json.loads,
+            'saved_video_position': lambda v: RelativeTime.isotime_to_timedelta(v),
+        }
 
+        if dispatch == 'save_user_state':
             for key in data:
                 if hasattr(self, key) and key in accepted_keys:
-                    if key == 'saved_video_position':
-                        relative_position = RelativeTime.isotime_to_timedelta(data[key])
-                        self.saved_video_position = relative_position
+                    if key in conversions:
+                        value = conversions[key](data[key])
                     else:
-                        setattr(self, key, json.loads(data[key]))
+                        value = data[key]
+
+                    setattr(self, key, value)
+
                     if key == 'speed':
                         self.global_speed = self.speed
 
@@ -228,6 +252,7 @@ class VideoModule(VideoFields, XModule):
 
     def get_html(self):
         track_url = None
+        transcript_download_format = self.transcript_download_format
 
         get_ext = lambda filename: filename.rpartition('.')[-1]
         sources = {get_ext(src): src for src in self.html5_sources}
@@ -241,7 +266,8 @@ class VideoModule(VideoFields, XModule):
         if self.download_track:
             if self.track:
                 track_url = self.track
-            elif self.sub:
+                transcript_download_format = None
+            elif self.sub or self.transcripts:
                 track_url = self.runtime.handler_url(self, 'transcript').rstrip('/?') + '/download'
 
         if not self.transcripts:
@@ -289,13 +315,15 @@ class VideoModule(VideoFields, XModule):
             # configuration setting field.
             'yt_test_timeout': 1500,
             'yt_test_url': settings.YOUTUBE_TEST_URL,
+            'transcript_download_format': transcript_download_format,
+            'transcript_download_formats_list': self.descriptor.fields['transcript_download_format'].values,
             'transcript_language': transcript_language,
             'transcript_languages': json.dumps(sorted_languages),
             'transcript_translation_url': self.runtime.handler_url(self, 'transcript').rstrip('/?') + '/translation',
             'transcript_available_translations_url': self.runtime.handler_url(self, 'transcript').rstrip('/?') + '/available_translations',
         })
 
-    def get_transcript(self):
+    def get_transcript(self, format='srt'):
         """
         Returns transcript in *.srt format.
 
@@ -307,12 +335,18 @@ class VideoModule(VideoFields, XModule):
         lang = self.transcript_language
         subs_id = self.sub if lang == 'en' else self.youtube_id_1_0
         data = asset(self.location, subs_id, lang).data
-        str_subs = generate_srt_from_sjson(json.loads(data), speed=1.0)
+        if format == 'txt':
+            text = json.loads(data)['text']
+            str_subs = HTMLParser().unescape("\n".join(text))
+            mime_type = 'text/plain'
+        else:
+            str_subs = generate_srt_from_sjson(json.loads(data), speed=1.0)
+            mime_type = 'application/x-subrip'
         if not str_subs:
             log.debug('generate_srt_from_sjson produces no subtitles')
             raise ValueError
 
-        return str_subs
+        return str_subs, format, mime_type
 
     @XBlock.handler
     def transcript(self, request, dispatch):
@@ -350,7 +384,7 @@ class VideoModule(VideoFields, XModule):
 
         elif dispatch == 'download':
             try:
-                subs = self.get_transcript()
+                subs, format, mime_type = self.get_transcript(format=self.transcript_download_format)
             except (NotFoundError, ValueError, KeyError):
                 log.debug("Video@download exception")
                 response = Response(status=404)
@@ -358,10 +392,13 @@ class VideoModule(VideoFields, XModule):
                 response = Response(
                     subs,
                     headerlist=[
-                        ('Content-Disposition', 'attachment; filename="{0}.srt"'.format(self.transcript_language)),
+                        ('Content-Disposition', 'attachment; filename="{filename}.{format}"'.format(
+                            filename=self.transcript_language,
+                            format=format,
+                        )),
                     ]
                 )
-                response.content_type = "application/x-subrip"
+                response.content_type = mime_type
 
         elif dispatch == 'available_translations':
             available_translations = []

common/test/data/uploads/subs_OEoXaMPEzfM.srt.sjson

@@ -94,7 +94,7 @@
     114220
   ],
   "text": [
-    "LILA FISHER: Hi, welcome to Edx.",
+    "Hi, welcome to Edx.",
     "I'm Lila Fisher, an Edx fellow helping to put",
     "together these courses.",
     "As you know, our courses are entirely online.",

lms/djangoapps/courseware/features/video.feature

@@ -155,3 +155,24 @@ Feature: LMS Video component
     Then I see video aligned correctly with enabled transcript
     And I click video button "CC"
     Then I see video aligned correctly without enabled transcript
+
+  # 19
+  Scenario: Download Transcript button works correctly in Video component
+    Given I am registered for the course "test_course"
+    And it has a video "A" in "Youtube" mode in position "1" of sequential:
+      | sub         | download_track |
+      | OEoXaMPEzfM | true           |
+    And a video "B" in "Youtube" mode in position "2" of sequential:
+      | sub         | download_track |
+      | OEoXaMPEzfM | true           |
+    And a video "C" in "Youtube" mode in position "3" of sequential:
+      | track               | download_track |
+      | http://example.org/ | true           |
+    And I open the section with videos
+    And I can download transcript in "srt" format
+    And I select the transcript format "txt"
+    And I can download transcript in "txt" format
+    When I open video "B"
+    Then I can download transcript in "txt" format
+    When I open video "C"
+    Then menu "download_transcript" doesn't exist

lms/djangoapps/courseware/features/video.py

@@ -3,12 +3,13 @@
 
 from lettuce import world, step
 import json
+import os
+import requests
 from common import i_am_registered_for_the_course, section_location, visit_scenario_item
 from django.utils.translation import ugettext as _
 from django.conf import settings
 from cache_toolbox.core import del_cached_content
 from xmodule.contentstore.content import StaticContent
-import os
 from xmodule.contentstore.django import contentstore
 TEST_ROOT = settings.COMMON_TEST_DATA_ROOT
 LANGUAGES = settings.ALL_LANGUAGES
@@ -32,17 +33,57 @@ VIDEO_BUTTONS = {
     'play': '.video_control.play',
     'pause': '.video_control.pause',
     'fullscreen': '.add-fullscreen',
+    'download_transcript': '.video-tracks > a',
 }
 
 VIDEO_MENUS = {
     'language': '.lang .menu',
     'speed': '.speed .menu',
+    'download_transcript': '.video-tracks .a11y-menu-list',
 }
 
 coursenum = 'test_course'
 sequence = {}
 
 
+class ReuqestHandlerWithSessionId(object):
+    def get(self, url):
+        """
+        Sends a request.
+        """
+        kwargs = dict()
+
+        session_id = [{i['name']:i['value']} for i in  world.browser.cookies.all() if i['name']==u'sessionid']
+        if session_id:
+            kwargs.update({
+                'cookies': session_id[0]
+            })
+
+        response = requests.get(url, **kwargs)
+        self.response = response
+        self.status_code = response.status_code
+        self.headers = response.headers
+        self.content = response.content
+
+        return self
+
+    def is_success(self):
+        """
+        Returns `True` if the response was succeed, otherwise, returns `False`.
+        """
+        if self.status_code < 400:
+            return True
+        return False
+
+    def check_header(self, name, value):
+        """
+        Returns `True` if the response header exist and has appropriate value,
+        otherwise, returns `False`.
+        """
+        if value in self.headers.get(name, ''):
+            return True
+        return False
+
 def add_video_to_course(course, player_mode, hashes, display_name='Video'):
     category = 'video'
 
@@ -80,15 +121,23 @@ def add_video_to_course(course, player_mode, hashes, display_name='Video'):
 
     if hashes:
         kwargs['metadata'].update(hashes[0])
-    course_location = world.scenario_dict['COURSE'].location
+    course_location =world.scenario_dict['COURSE'].location
+
+    conversions = {
+        'transcripts': json.loads,
+        'download_track': json.loads,
+        'download_video': json.loads,
+    }
+
+    for key in kwargs['metadata']:
+        if key in conversions:
+            kwargs['metadata'][key] = conversions[key](kwargs['metadata'][key])
 
     if 'sub' in kwargs['metadata']:
         filename = _get_sjson_filename(kwargs['metadata']['sub'], 'en')
         _upload_file(filename, course_location)
 
     if 'transcripts' in kwargs['metadata']:
-        kwargs['metadata']['transcripts'] = json.loads(kwargs['metadata']['transcripts'])
-
         for lang, filename in kwargs['metadata']['transcripts'].items():
             _upload_file(filename, course_location)
 
@@ -322,6 +371,10 @@ def upload_to_assets(_step, filename):
 def is_hidden_button(_step, button):
     assert not world.css_visible(VIDEO_BUTTONS[button])
 
+@step('menu "([^"]*)" doesn\'t exist$')
+def is_hidden_menu(_step, menu):
+    assert world.is_css_not_present(VIDEO_MENUS[menu])
+
 
 @step('I see video aligned correctly (with(?:out)?) enabled transcript$')
 def video_alignment(_step, transcript_visibility):
@@ -345,3 +398,45 @@ def video_alignment(_step, transcript_visibility):
     )
 
     assert all([width, height])
+
+
+@step('I can download transcript in "([^"]*)" format$')
+def i_can_download_transcript(_step, format):
+    button = world.css_find('.video-tracks .a11y-menu-button').first
+    assert button.text.strip() == '.' + format
+
+    formats = {
+        'srt': {
+            'content': '0\n00:00:00,270',
+            'mime_type': 'application/x-subrip'
+        },
+        'txt': {
+            'content': 'Hi, welcome to Edx.',
+            'mime_type': 'text/plain'
+        },
+    }
+
+    url = world.css_find(VIDEO_BUTTONS['download_transcript'])[0]['href']
+    request = ReuqestHandlerWithSessionId()
+    assert request.get(url).is_success()
+    assert request.check_header('content-type', formats[format]['mime_type'])
+    assert request.content.startswith(formats[format]['content'])
+
+
+@step('I select the transcript format "([^"]*)"$')
+def select_transcript_format(_step, format):
+    button = world.css_find('.video-tracks .a11y-menu-button').first
+    button.mouse_over()
+    assert button.text.strip() == '...'
+
+    menu_selector = VIDEO_MENUS['download_transcript']
+    menu_items = world.css_find(menu_selector + ' a')
+
+    for item in menu_items:
+        if item['data-value'] == format:
+            item.click()
+            world.wait_for_ajax_complete()
+            break
+
+    assert world.css_find(menu_selector + ' .active a')[0]['data-value'] == format
+    assert button.text.strip() == '.' + format

lms/djangoapps/courseware/tests/test_video_handlers.py

@@ -110,7 +110,7 @@ class TestVideo(BaseTestXmodule):
         data = [
             {'speed': 2.0},
             {'saved_video_position': "00:00:10"},
-            {'transcript_language': json.dumps('uk')},
+            {'transcript_language': 'uk'},
         ]
         for sample in data:
             response = self.clients[self.users[0].username].post(
@@ -129,7 +129,7 @@ class TestVideo(BaseTestXmodule):
         self.assertEqual(self.item_descriptor.saved_video_position, timedelta(0, 10))
 
         self.assertEqual(self.item_descriptor.transcript_language, 'en')
-        self.item_descriptor.handle_ajax('save_user_state', {'transcript_language': json.dumps("uk")})
+        self.item_descriptor.handle_ajax('save_user_state', {'transcript_language': "uk"})
         self.assertEqual(self.item_descriptor.transcript_language, 'uk')
 
     def tearDown(self):
@@ -173,11 +173,20 @@ class TestVideoTranscriptTranslation(TestVideo):
         response = self.item.transcript(request=request, dispatch='download')
         self.assertEqual(response.status, '404 Not Found')
 
-    @patch('xmodule.video_module.VideoModule.get_transcript', return_value='Subs!')
-    def test_download_exist(self, __):
+    @patch('xmodule.video_module.VideoModule.get_transcript', return_value=('Subs!', 'srt', 'application/x-subrip'))
+    def test_download_srt_exist(self, __):
         request = Request.blank('/download?language=en')
         response = self.item.transcript(request=request, dispatch='download')
         self.assertEqual(response.body, 'Subs!')
+        self.assertEqual(response.headers['Content-Type'], 'application/x-subrip')
+
+    @patch('xmodule.video_module.VideoModule.get_transcript', return_value=('Subs!', 'txt', 'text/plain'))
+    def test_download_txt_exist(self, __):
+        self.item.transcript_format = 'txt'
+        request = Request.blank('/download?language=en')
+        response = self.item.transcript(request=request, dispatch='download')
+        self.assertEqual(response.body, 'Subs!')
+        self.assertEqual(response.headers['Content-Type'], 'text/plain')
 
     def test_download_en_no_sub(self):
         request = Request.blank('/download?language=en')
@@ -309,7 +318,7 @@ class TestVideoTranscriptsDownload(TestVideo):
         self.item_descriptor.render('student_view')
         self.item = self.item_descriptor.xmodule_runtime.xmodule_instance
 
-    def test_good_transcript(self):
+    def test_good_srt_transcript(self):
         good_sjson = _create_file(content=textwrap.dedent("""\
                 {
                   "start": [
@@ -329,7 +338,7 @@ class TestVideoTranscriptsDownload(TestVideo):
 
         _upload_sjson_file(good_sjson, self.item.location)
         self.item.sub = _get_subs_id(good_sjson.name)
-        text = self.item.get_transcript()
+        text, format, download = self.item.get_transcript()
         expected_text = textwrap.dedent("""\
             0
             00:00:00,270 --> 00:00:02,720
@@ -343,6 +352,33 @@ class TestVideoTranscriptsDownload(TestVideo):
 
         self.assertEqual(text, expected_text)
 
+    def test_good_txt_transcript(self):
+        good_sjson = _create_file(content=textwrap.dedent("""\
+                {
+                  "start": [
+                    270,
+                    2720
+                  ],
+                  "end": [
+                    2720,
+                    5430
+                  ],
+                  "text": [
+                    "Hi, welcome to Edx.",
+                    "Let's start with what is on your screen right now."
+                  ]
+                }
+            """))
+
+        _upload_sjson_file(good_sjson, self.item.location)
+        self.item.sub = _get_subs_id(good_sjson.name)
+        text, format, mime_type = self.item.get_transcript(format="txt")
+        expected_text = textwrap.dedent("""\
+            Hi, welcome to Edx.
+            Let's start with what is on your screen right now.""")
+
+        self.assertEqual(text, expected_text)
+
     def test_not_found_error(self):
         with self.assertRaises(NotFoundError):
             self.item.get_transcript()

lms/djangoapps/courseware/tests/test_video_mongo.py

 # -*- coding: utf-8 -*-
 """Video xmodule tests in mongo."""
 from mock import patch, PropertyMock
-import json
 
 from . import BaseTestXmodule
 from .test_video_xml import SOURCE_XML
@@ -41,6 +40,8 @@ class TestVideoYouTube(TestVideo):
             'youtube_streams': create_youtube_string(self.item_descriptor),
             'yt_test_timeout': 1500,
             'yt_test_url': 'https://gdata.youtube.com/feeds/api/videos/',
+            'transcript_download_format': 'srt',
+            'transcript_download_formats_list': [{'display_name': 'SubRip (.srt) file', 'value': 'srt'}, {'display_name': 'Text (.txt) file', 'value': 'txt'}],
             'transcript_language': 'en',
             'transcript_languages': '{"en": "English", "uk": "Ukrainian"}',
             'transcript_translation_url': self.item_descriptor.xmodule_runtime.handler_url(
@@ -103,6 +104,8 @@ class TestVideoNonYouTube(TestVideo):
             'autoplay': settings.FEATURES.get('AUTOPLAY_VIDEOS', True),
             'yt_test_timeout': 1500,
             'yt_test_url': 'https://gdata.youtube.com/feeds/api/videos/',
+            'transcript_download_format': 'srt',
+            'transcript_download_formats_list': [{'display_name': 'SubRip (.srt) file', 'value': 'srt'}, {'display_name': 'Text (.txt) file', 'value': 'txt'}],
             'transcript_language': 'en',
             'transcript_languages': '{"en": "English"}',
             'transcript_translation_url': self.item_descriptor.xmodule_runtime.handler_url(
@@ -191,6 +194,7 @@ class TestGetHtmlMethod(BaseTestXmodule):
             'autoplay': settings.FEATURES.get('AUTOPLAY_VIDEOS', True),
             'yt_test_timeout': 1500,
             'yt_test_url': 'https://gdata.youtube.com/feeds/api/videos/',
+            'transcript_download_formats_list': [{'display_name': 'SubRip (.srt) file', 'value': 'srt'}, {'display_name': 'Text (.txt) file', 'value': 'txt'}],
         }
 
         for data in cases:
@@ -208,6 +212,7 @@ class TestGetHtmlMethod(BaseTestXmodule):
             context = self.item_descriptor.render('student_view').content
 
             expected_context.update({
+                'transcript_download_format': None if self.item_descriptor.track and self.item_descriptor.download_track else 'srt',
                 'transcript_languages': '{"en": "English"}',
                 'transcript_language': 'en',
                 'transcript_translation_url': self.item_descriptor.xmodule_runtime.handler_url(
@@ -305,6 +310,8 @@ class TestGetHtmlMethod(BaseTestXmodule):
             'autoplay': settings.FEATURES.get('AUTOPLAY_VIDEOS', True),
             'yt_test_timeout': 1500,
             'yt_test_url': 'https://gdata.youtube.com/feeds/api/videos/',
+            'transcript_download_format': 'srt',
+            'transcript_download_formats_list': [{'display_name': 'SubRip (.srt) file', 'value': 'srt'}, {'display_name': 'Text (.txt) file', 'value': 'txt'}],
             'transcript_language': 'en',
             'transcript_languages': '{"en": "English"}',
         }

lms/templates/video.html

@@ -112,7 +112,29 @@
     % endif
     % if track:
         <li class="video-tracks">
-            ${('<a href="%s">' + _('Download timed transcript') + '</a>') % track}
+          % if transcript_download_format:
+            ${('<a href="%s">' + _('Download transcript') + '</a>') % track
+            }
+            <div class="a11y-menu-container">
+                <a class="a11y-menu-button" href="#" title="${'.' + transcript_download_format}">${'.' + transcript_download_format}</a>
+                <ol class="a11y-menu-list">
+                % for item in transcript_download_formats_list:
+                  % if item['value'] == transcript_download_format:
+                  <li class="a11y-menu-item active">
+                  % else:
+                  <li class="a11y-menu-item">
+                  % endif
+                      <a class="a11y-menu-item-link" href="#${item['value']}" title="${_('{file_format}'.format(file_format=item['display_name']))}" data-value="${item['value']}">
+                        ${_('{file_format}'.format(file_format=item['display_name']))}
+                      </a>
+                  </li>
+                % endfor
+                </ol>
+            </div>
+          % else:
+            ${('<a href="%s" class="external-track">' + _('Download transcript') + '</a>') % track
+            }
+          % endif
         </li>
     % endif
   </ul>