Lecturecast has built-in ASR (automatic speech recognition) to produce recording transcripts.
Transcripts are automatically created for any media uploaded to Lecturecast and are available to viewers once a recording's audio file has been processed.
Also, media transcripts are now automatically applied to the closed captions track if they meet the 90% confidence score threshold.
Transcripts (also referred to as ASR or automatic speech recognition) and Closed Captions are both text versions of the speech from video or audio media.
Closed Captions use the same ASR file as the transcript. With closed captions, the text of what is being spoken is shown on the screen, within the video, in small chunks that correspond to the current location of the video.
Transcripts also provide the text of what is being spoken on the screen, and are divided into small chunks that correspond to the location of the video.
The difference in transcripts is that the entirety of the transcription is shown, with a highlight on the entry that corresponds to the current location. Transcripts are also searchable within the player (because the entire transcript is visible), and users can jump to a particular location in the transcript, which automatically jumps to that location in the video.
The image on the right shows the transcript button and transcript panel for a video, as well as the closed caption button and caption banner, and both are showing the same text for the current location in the video.
The text is often the same, but can differ because closed captions are typically (and by design) more accurate. As noted later on this page, however, transcripts can be applied as closed captions to media, in which case the text in both would be identical.
When a recording is placed in Lecturecast (as a scheduled recording, manually via ALP or by upload) a transcript is automatically generated.
This will take longer to process than the video, but usually no more than two hours and often sooner.
Course administrators and tutors will not need to take any additional steps in Lecturecast to create a transcript for their media.
How to navigate the transcript editor:
Once the transcript file has been generated, you'll see the Transcript Icon (1) along the top ribbon (see image on the right).
This allows viewers to have the transcript 'visible' or 'hidden'.
The full transcript is shown in the right window, with the current speech highlighted.
The Download Icon (2) allows the viewer to save a copy of the transcript as a .vvt file.
The Search function (3) will look for matches, with < and > to move back and forward through the results.
Staff are under no obligation to correct transcripts (this doesn't include situations where transcript provision has been agreed through SORAs).
Depending on the accuracy of ASR for a particular recording, the additional work required in providing an accurate transcript can vary greatly.
The most significant factors affecting ASR accuracy are the technical quality of recording (which is largely due to the quality of mic or headset) and the amount of subject-specific vocabulary used.
How to edit a transcript:
Please refer to the Echo360 guides on accessing and using the transcript editor, for step by step guidance and further information.
As a new transcript is generated each time the recording is processed, you should edit the recording before you review and edit the transcript.
If you need to edit the recording after the transcript has been corrected, then download the transcript .vvt file before you edit the video recording, so you can more easily re-correct the transcript.
Staff not wishing to have a transcript associated with their recording(s) can opt out by deleting a recording's transcript file(s).
To delete a transcript file from a recording:
We have activated automatic transcription by default in Lecturecast as an additional supporting tool to provide accessible videos for our students.
Aside from their uses as an aid to viewers with auditory impairment, transcripts and captions can be extremely useful as a study tool. Students often search large amounts of text using keywords to pinpoint passages of interest; Lecturecast transcripts, which are searchable and synchronised with the recording, allow similar searches of video presentations.
Further information and detailed instructions are available on the Echo360 guides.
Please contact firstname.lastname@example.org with any questions.