MKVToolnix
HandBrake
MKVCleaver
tsMuxeR
FFmpeg
Subler
Mkv2vob
MKVtools
iSpring QuizMaker
NWEA Assessments
ALEKS
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ExamView Assessment Suite
Canvas by Instructure
DesignerFund
Nearpod
iSpring QuizMaker is an application for creating quizzes and tests that allows you to choose from a variety of questions types, add multimedia to questions and answers, provide students with feedback upon their answer choice, allow multiple attempts, limit test time, assign custom points and penalties, and even more. There are 14 question types for accurate knowledge assessment. You can brand your quizzes with colors and style, experiment with layouts, add texts and visuals. You can also publish your tests directly on the Internet as an HTML5 file, or save it on your computer as an executable file and upload it to your LMS. iSpring QuizMaker is paid, but you can enjoy full functionality during the 14-day free trial.
MKVToolnix iSpring QuizMakerNo features have been listed yet.
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Fourth, try remuxing one of the problem files. Use the Multiplexer section of MKVToolNix. This will copy the contents to a new MKV file. It is like putting a letter in a new envelope when the original is damaged, but the pages inside are OK. Source: 5 months ago
If the audio tracks are displayed as unknown, the language flag needs to be set. Use tools such as MKVToolNix Header Editor to configure the language for audio & subtitle tracks. Source: 10 months ago
As for extracting tracks from MKVs, the low-level way would be to use ffmpeg directly (something like ffmpeg -i video.mkv -map 0:s:0 subtitle.sup would extract the first subtitle stream to a .sup file, the extension used for standalone PGS subtitles), but something like MKVToolNix can probably do it as well. That won't help you too much on its own though, since you now just have an external image-based subtitle... Source: 10 months ago
You could use a tool outside of Plex (like MKVToolNix) to combine the video+audio of one version with the audio+subtitles of the other. It gets trickier, or at least more tedious, if the videos aren't exactly the same, since you'd then have to account for any audio/subtitle shifting. Source: 10 months ago
Option 3: Change to MKV container. Use MKVToolNix or similar tools and remux to a MKV container. Note that this may cause problems with Dolby Vision. LG TVs must have Dolby Vision in a MP4 container, otherwise the video will not play correctly. Probably affects other Plex clients as well. Source: 11 months ago
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.
NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
MKVCleaver - MKVcleaver is a GUI (Graphical User Interface) for mkvtoolnix, designed to extract data from MKV...
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
tsMuxeR - tsMuxeR update for 3D blu-ray (HD) DVD & Blu-ray authoring
FlexiQuiz - FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun.