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Creating subtitles for recordings

Directly to the subtitles styleguide

Congress is over, and now it's the time to create something persistent. We'd like to create subtitles for all Congress Talks. Ideally both in native language and a German/English translation (or even other languages) provided we find enough volunteers. Here we also need you help.

From our first experiences:

New: If there are talks waiting for quality checks, consider to start doing that before doing new transcriptions of other talks. You will get a better feeling what you need to be aware of, when transcribing. But still:

Please read this manual carefully!

Please do never click on “Publish” button in Amara, before the transcription of the talk is done completely!

Please do not start with any translation of the talk or any timing (do no timing manually at all!), as long as the transcription in original language of the talk is not done completely!

Please do not click on “Finish transcribing” in the subtitles interface, before the transcription of the talk is done completely!

Please only use the Amara-Links generated by our Subtitle-Interface. We can only link subtitles created there.
Do not create own Video-Links on Amara or use links of dubious YouTube accounts if you want your subtitles to find their way in to the CDN!

If you have any questions, please join us in IRC!

Thank you!


The subtitles created live can rarely be used to create subtitle-tracks. Most of the time their quality is to poor as that they would save you any time. Creating clean recording-quality subtitles from scratch is usually faster.

Should there be a Talk where that's not the case and you remember a especially good live subtitle please write a mail to subtitles -!-at-!-

Our quality requirements towards subtitles for recordings are different to those for live-subtitles. Unlike it is common in other places, we want our subtitles to be as accurate close as possible to the to what has actually been said. Besides fillers like “ähhs” and “ehms”, which should be left out, what is written should represent the Talk as closely as possible. This time of course without errors and with consistent style.

Overview-page for recording-subtitles

On our overview page there's a interface showing the progress and processing status of the subtitles of past Congresses.

Not yet transcribed talks is shown in gray, parts that are currently being transcribed in red, parts that have to be processed in other ways in yellow and completed subtitles in green. The bars represent actual durations of all congress-talks that have been released as video.

As soon as a event is selected, a overview of all talks of that event is displayed.

When a talk is selected a detailed view is shown. Click “Work on this video on Amara” to get rededirected to Amara, where you can work on the video.

There's no need to log in to our interface to be able to create subtitles. However, you have to log in to Amara.

Creating subtitles on Amara

We use for the actual subtitle-creation-process. This is an external website especially designed for subtitling online-videos. Even tough we're not happy with all features and functions, this is currently the easiest way to share in-progress subtitles online and (continuing) to work on them collaboratively.

Amara requires an account, however you can use existing social-media accounts to log in.

You can find the links to our talks on the overview page.

Create subtitles track

As soon as an Amara link for a talk appears on our site, use it to go to the video-page on Amara.

“Add a new language” by clicking the corresponding button to create a new subtitles track. You have to define the native language of the talk (the one it's held in. Use 'Klingon' for multi-language talks), as well as the language you want to create subtitles for.

Please always create the native language of a talk first and do not start with a translation! That will save us a lot of work later with timing issues and other stuff!

If the talk is of mixed languages (such as lightning talks) use 'Klingon' – seriously!

After a new Language is added..

… you can start working on it by clicking it.

Actual transcription process

Now you can transcribe subtitles by using the Amara online editor.

We don't want to focus on the description of the editor, as Amara has it's own help-page for it..

Please have a look at the styleguide. Please stick to what was actually said.
Just note that we see the “42 character rule” more as as a recommendation than a rule. We want to have comprehensive subtitles and can live with a bit heavy load.

It's also a great idea to look at transcriptions of other people. (e.g. 32C3 Opening Event)

While working on transcriptions you should save your work from time to time by clicking on “Save Draft”, especially if you take a break. Please do not click on “Publish” or “Finish transcribing” yet, if you are not done completely with transcription!

Please also note in our interface how far you got.

This way the overall status of all talks can be visualized nicely for everybody. Also, this way it's easier for others to continue the your work.

Our subtitles interface runs a cronjob which checks for new subtitle tracks.
Since that cronjob can only register a track after it has been saved once, we recommend saving your subtitle as soon as you start working on it.

When you've finished transcribing completely, save your draft in Amara and click the “Finish Transcribing” button in the subtitles interface.

Do not go into sync mode in Amara!
Our script will do that.


After you finished the transcription, your snippets have to be timed to the correct position in the video.

There is an interface for doing that in Amara itself, However, this is a task that can be automated very well.
Therefore we ask you to not do any timing yourself, but let the script that is invoked when you hit 'Finish Transcribing' do the job.

Please don't spend your efforts on timing by hand. Rather use your time for reviewing automatically timed videos and doing error correction.

While the subtitles are being auto-timed you can't work on the video. If as soon as it's finished, the bar will turn yellow and you can do quality control.

Quality control

After auto-timing, the subtitle track has to be checked for blunders and mistakes.
Optimally that's done by a different person than the one who transcribed the talk. You might find someone to do QC on your subtitle in the IRC.
However, if you can't find anyone it's still better to do it yourself than to not publish the work.

Most important is to check for (auto-)timing errors, and to adjust timing if necessary.
That is again done in Amara.

As during the transcription process, please save your draft regularly and note the timecode of how far you got in the subtitles interface.

When you've finished reviewing a subtitle you can finalize it by hitting 'Publish' on Amara.

Optionally you can also mark the subtitles track as finished in the subtitles interface, but the cronjob scripts extracting content from Amara does that for you a few minutes later anyway.

The subtitles track is now finished and ready for publication, which will automatically be done via script upload to the CDN, where it is now available to everyone.

Translation of subtitles

If there's a finished subtitles track in native language the time has come to start translations.

To do this, you also work on this video on Amara. There you add a new language and now you can translate from the native language to the one you want to translate to.

If you do this translation starting from the finished language in the Amara editor, the timing of the native language is kept and this part of the process can be later skipped. Apart from that, everything else works very similar to doing the original transcription. If you pause your work or have it finished, please also mark that in our subtitles interface.

en/postprocessing/contribute.txt · Last modified: 2017/10/11 22:53 (external edit)