About the TIB AV-Portal

The TIB AV-Portal

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The TIB AV-Portal is a web-based platform for quality-tested scientific videos from the realms of technology/engineering, architecture, chemistry, information technology, mathematics and physics. Amongst other things, the videos portray computer visualisations, learning material, simulations, experiments, interviews, and recordings of lectures and conferences. A key feature of the portal is the use of different automated video analyses. The added value: these video analyses enable pinpoint searches within the video content.

The Lab Non-Textual Materials at the German National Library of Science and Technology (TIB) started developing the portal in cooperation with the Hasso Plattner Institute for Software Systems Engineering, in July 2011. The TIB AV-Portal went online in spring 2014.

The TIB AV-Portal can be used to search easily for scientific videos from the fields of science and technology, and to cite and publish such videos in a simple manner. In addition, numerous videos can be downloaded, licensed or ordered on DVD.

Get to know the TIB AV portal in 120 seconds (English Version).
Searching and publishing scientific videos: The TIB AV-Portal in 120 seconds

The TIB AV-Portal focuses mainly on scientific videos from the six core subjects of the German National Library of Science and Technology (TIB):

  • Technology/Engineering
  • Architecture
  • Chemistry
  • Information Technology
  • Mathematics
  • Physics

In 2012, TIB acquired the media stock of IWF gGmbH. In addition to videos from the realms of science and technology, this stock also contains videos from the following subject areas:

  • Biology
  • Ethnology
  • Geological Sciences
  • History
  • Arts and Media
  • Medicine
  • Sports
  • Environmental Sciences/Ecology

Scientific videos mainly from TIB’s core subjects will be newly acquired for the TIB AV-Portal.

The TIB AV-Portal can be used with the latest and older versions of common browsers. Nonetheless, we are unable to guarantee the problem-free use of the portal in all cases, particularly when older browser versions are used. These include versions of Internet Explorer prior to Version 9, Firefox prior to Version 24 and Google Chrome prior to Version 28.

Scene recognitionshot boundary detection segments the video on the basis of image characteristics. A visual table of contents created from this provides a quick overview of the video content, facilitating accurate access.

Text recognitionintelligent character recognition determines and indexes written language (such as text written on slides), and makes it searchable.

Speech recognitionspeech to text notes down spoken language in the video in the form of a transcript, which is searchable.

Image recognitionvisual concept detection indexes the moving image using subject-specific and multidisciplinary visual concepts (for example, landscape, façade detail, technical drawing, computer animation or lecture).

Indexingnamed-entity recognition describes individual video segments with semantically associated terms. This ensures that synonyms or hyponyms of any search terms entered are also searched for automatically, increasing the number of hits.

In principle, automatic analysis is only performed for videos that are available as a video file and that belong to one of TIB’s six core subjects: technology/engineering, architecture, chemistry, information technology, mathematics and physics.

The TIB AV-Portal offers a German and an English view of the user interface, which can be selected via the language selection.

Numerous descriptions (metadata) of the videos are available in German and English. Hence both German and English search terms can be entered in the search box. When a German search term is entered, English translations of the term – where available – are also searched for automatically, and vice versa for English search terms.

Upload Videos

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Only audiovisual media from science and teaching related to the core subjects of the German National Library of Science and Technology (TIB) are collected in the TIB AV-Portal:

  • Technology/Engineering
  • Architecture
  • Chemistry
  • Information Technology
  • Mathematics
  • Physics

In these fields, the TIB AV-Portal focuses on the following materials:

  • Recordings of conference presentations, conferences, colloquia, panel discussions and other scientific lectures, talks and discussions
  • Recordings of experiments from the area of research and development, presentation of technologies and practices of outstanding scientific importance
  • Microscopic images, images taken using special cameras (such as thermal cameras) and other imaging techniques
  • Documentation and presentation of research work and results
  • Modelling, simulations and presentations of specialised software for certain scientific purposes
  • Presentations of 3D models (such as architectural models) on film

A selection of the following material is also collected:

  • Recordings of university seminars and lectures
  • eLearning material such as online tutorials, massive open online courses (MOOCs), teaching experiments and experiments for private study
  • Scientific video items/video blogs on websites
  • Presentations of scientific organisations, self-portrayals (film clips and slide shows) of research facilities and companies, mainly with a scientific content
  • Documentaries, reports and portraits on film (for example, of architects and their buildings)

In line with TIB’s collection profile, audiovisual media in German and English are mainly collected.

Before being included in the TIB AV-Portal, all audiovisual media are reviewed with regard to their content-related and technical quality.

Content-related quality of audiovisual media

All audiovisual media accepted onto the portal must be scientifically relevant and must correspond to TIB’s collection profile. The scientific relevance and quality of the videos are reviewed by TIB experts. Advertising films, image films and popular science films will not be included in the TIB AV-Portal.

Technical quality of the audiovisual media

  • The video track must have a resolution of at least 480p (640x480 pixels at 4:3).
  • The audio track must be comprehensible. There must be as little noise interference as possible.
  • There should preferably be no time delay between the audio and the video track.

All registered TIB AV-Portal users may provide material that is scientifically relevant and that falls under TIB’s collection profile.

Click here to register for the TIB AV-Portal free of charge.

Step 1: Place your videos at our disposal

  • via data carrier to:

    Lab Nicht-Textuelle Materialien
    Technische Informationsbibliothek (TIB)
    Welfengarten 1 B
    30167 Hannover, Germany

  • in the case of large data transmissions, via an FTP server (to obtain the FTP access data, please contact KNM@tib.eu)
  • single films via the TIB AV-Portal upload form
  • via list of links:
    • Your videos are already on a web server, available for download over the internet? In that case, you can provide us with a list of links in a plain- text file (1 download link per line). We can download the videos directly from your server. Please be advised that we only process direct download links; One Click Hosters or streaming links will not be accepted.
    • As an alternative to a simple list of links in plain-text format, we can also process a shell script with wget commands for every single file to be downloaded.

Virtually all video formats are acceptable. Nevertheless, we recommend applying the following basic settings:

  • Video format: MPG1, MPG2, MPG4, H264, FLV, DVCPro25/50
  • Aspect ratio: native image format without letterboxing (4:3, 16:9)
  • Resolution: 720 x 576 (16:9, anamorphic) or 1024 x 576 (16:9, square pixel) 720 x 576 (4:3, anamorphic) or 768 x 576 (4:3, square pixel)
  • Images per second: 25

Accompanying material such as lecture notes can also be uploaded. Please make sure that the file names are clearly assigned to the respective video.

Step 2: Send us your metadata

The more metadata (title, author, publisher, and so on) you specify for each video, the more effectively the video can be found in the portal. We have prepared an XML file for providing metadata, which you can complete and send to us.

Please make sure that the XML files are clearly assigned to the respective videos. Further information can be found in the metadata documentation.

Step 3: Conclude a license agreement with us

By concluding a license agreement, you specify the terms and conditions of use, and grant us permission to offer the audiovisual media via the portal.

If you do not own the necessary rights: please first contact the originators or other rightholders of the films before placing the audiovisual media at TIB’s disposal.

If you are the originator of the audiovisual media or if the rights have been transferred to you: you can choose between an open access licence and a declaration of consent, enabling you to decide how you wish to place the material at TIB’s disposal.

Open access licence

With an open access licence, you grant users as many rights as possible to the extent provided by law, and permit the diverse use of your film, fostering scientific exchange in the digital environment. We recommend the “CC- Namensnennung – Deutschland 3.0” licence, which ensures that the originator is acknowledged and permits the comprehensive use of audiovisual media in research and teaching.

Please use the open access licence form and return it to us by post once you have completed and signed it.

Declaration of consent

TIB is granted a simple right of use of the audiovisual media, which it is permitted to make available via its portals. Users may watch the film online or download it. However – in contrast to all CC licences – users may not forward it to third parties or make it available online themselves.

Please use the license agreement form, which should be completed, signed and returned to us by post.

If the specified types of licensing do not suffice, we will endeavour to find an individual licensing solution for you. In this case, please contact us.

TIB quality requirements

The content of your video will be assessed before being included in the TIB AV-Portal, ensuring the high quality of the visual material. If material fails to meet the quality requirements placed by TIB on scientific information, it will be removed by TIB without notice.

Assistance in the provision of your materials

We will be happy to provide support in the provision of your materials. Please call us or send us an email:

Lars Gottschalk
Tel.: +49 511 762-14224

Tolga Karaarslan
Tel.: +49 511 762-14227


Metadata with links to external videos may be published in the TIB AV-Portal. XML files structured according to the NTM metadata schema v. 2.2 are required in order to include metadata in the portal.

In addition to the metadata described, such as the title, author, publisher, and so on, two links must be specified in the XML file:

  1. Link to external data: a link that refers directly to the video on the external website.
  2. Link to thumbnail: a link that leads to the thumbnail displayed on the external website.

Data from XML files is transferred via an FTP server. We will be happy to send you the FTP access data on request. Please call us or send us an email:

Anna Lichtenstein
Tel.: +49 511 762-14225


Please note the following:

  • Videos must correspond to TIB’s collection profile.
  • TIB is unable to award digital object identifiers DOI for external videos; no analysis results can be generated from text, speech and image recognition. This can only be performed for videos that are uploaded onto the portal.

The TIB AV-Portal increases the visibility of your audiovisual media. Your videos can be found easily, are citable with a time-based citation link and will be available long-term for education and science. The targeted, bilingual (English and German) semantic search also recognizes search terms in both the spoken and written word in the video.

The videos you make available will be:

  • listed in national and international portals (e.g. Europeana) thereby increasing their visibility.
  • assigned a clear citation link (DOI). Using media fragment identifier (MFID) each video segment is citable separately.
  • professionally evaluated for quality.
  • published legally sound.
  • stored long-term.
  • indexed according to international standards down to the segment level.
  • linked to other research information or accompanying material.
  • transcribed (speech transcription).

It will then be possible for your video to be viewed around the world, and users will find it easy to search for it and cite it as required.

Find and Use

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Three search options are available in the TIB AV-Portal:

  • Browsing
  • Entering search terms
  • Filtering search results


You can browse the TIB AV-Portal stock by subject and publisher. The browsing option can be found on the start page.

Entering search terms – targeted search

When using the search box, a term search is not only performed within the authoritative metadata of the video, such as the title, author or abstract, but also within the spoken text, text overlays and images.

In the detailed display of a video document, a visual index below the player provides an overview of the video content. The segments highlighted in red contain your search terms. Clicking on one of the segments will enable you to navigate straight to this part of the video. The TIB AV-Portal therefore enables you to perform a targeted search within the video.

Search in German and English

You can enter German and English search terms.

Semantic search

Synonyms, hyponyms and English or German translations that are semantically linked to the search terms you have entered in the TIB AV-Portal knowledge base will also be searched for automatically, increasing the number of relevant hits. If you search for the German term PKW , for example, you will also receive hits for the German synonym Auto and the English translation car.

Search operators

The internal search logic of the TIB AV-Portal is based on an AND/OR search. If, for example, you enter the two search terms polynomial and differential equation in the search box, the first hits you receive will be documents containing both terms; further down in the results list you will find documents that contain only one of the two terms.

If you only want to search for documents containing all of your search terms, enter the word “AND” between the individual search terms. For example: polynomial AND differential equation

If you want to search for an exact sequence of words, enclose the coherent terms in quotation marks. For example: " Information Retrieval"

Upper and lower case

It makes no difference whether search terms are entered in upper or lower case. Entering the terms Vortex Street und vortex street provides the same results.


Please make sure that you spell the search terms correctly – except for the upper and lower case. Search terms containing typing errors or spelling mistakes will not be found.

Searching the TIB-Portal

Every time a search is conducted in the TIB AV-Portal, an additional search is triggered in the TIB-Portal, the portal for science and technology of the German National Library of Science and Technology. Hits in TIB-Portal are displayed below the TIB AV-Portal results list. Simply click on the TIB-Portal hits to switch to the TIB-Portal.

Filtering search results – refine search

Search results can be narrowed down by using the following filter options: “Subject”,“Author & Contributors”, “Publisher”, “Licence” and “Year”. “Language” filters by language spoken in the video. Moreover you may use filters from the automatic video analysis:

  • “Terms found in the video” filters by terms from automated indexing
  • “Image Motifs found in the video” filters by image motifs from automated image recognition
  • “Person found in the video” filters by people mentioned in the video (automatic analysis results)
  • “Organisation found in the video” filters by organisations mentioned in the video (automatic analysis results)

Click on filtering terms to select them. You can combine several filtering terms with one another, narrowing down the number of hits even further. Any filters you have set can be removed by clicking on the cross next to the filtering term highlighted in red.

Information for TIB-Portal customers

If you are already registered to the TIB-Portal, you can log in to the TIB AV- Portal using your TIB customer number and password. In this case, you do not need to register additionally to the TIB AV-Portal.

How to register to the TIB AV-Portal

  1. Retrieve the registration form by clicking on the “register” tab on the top right.
  2. Complete all fields. All fields marked with an asterisk (*) must be completed.
  3. Click on “Register now”.

Once you have submitted the registration request, a message will appear in the portal stating that you have registered successfully. In addition, we will send you a confirmation email to your address.

If you have any problems registering, please contact TIB’s customer service:

TIB customer service
Tel.: +49 511 762-8989

How do I benefit from registering?

As soon as you have registered, you can make unlimited use of all of the portal’s functions:

  • Upload audiovisual media with accompanying material
  • Create watch lists

Apart from a few exceptions, users can utilise the portal and its services and content free of charge. As soon as a service is subject to a charge – for example, when ordering DVDs or licensing audiovisual media – you will be explicitly informed about it.

The entire content of the actual TIB AV-Portal is available free of charge, and is usually accessible without having to register to the TIB AV-Portal. Whether a specific film can be viewed, downloaded and disseminated online via the portal or whether the information about the film contains only a link to an external website depends on the conditions under which the licensor has made the film available to TIB.

A separate licence agreement must be concluded for the purchase of television licences and licences for public screening. Click here to find out more about purchasing licences.

In the drop-down list “Download …” below the video player you will find a variety of formats in which you can download the video. However, this option is only available if the video is stored in the internal TIB AV-Portal system and if there are no legal restrictions with regard to downloading the video.

Several videos include accompanying material such as recordings of lectures. Such material can be found in the form of PDF documents in the metadata area (below the video player); it can also be downloaded.

The IWF media shown online in the TIB AV-Portal can also be purchased on DVD. In addition, many more IWF films that are not available online – particularly from the fields of ethnology and medicine – can also be purchased on DVD. Some medical films are subject to a use restriction for members of the medical profession only (can only be sold upon presentation of a confirmation of use).

You will find the “Purchasing a DVD” option below the video. The prices quoted in the price list for DVD orders apply.

Do you require assistance in ordering a DVD or searching for a IWF film? Then give us a call or send us an email:

Paul Feindt
Tel.: +49 511 762-14221


In principle, sub-licences can also be granted for the use of sections of IWF media shown online in the TIB AV-Portal in film and television, or for the public screening of whole films.

You will find the “Granting licences” option below the respective audiovisual medium. After receiving the licensing request, TIB will check whether the requested medium can be licensed for the desired purpose. The prices quoted in the licensing price list apply.

If you require assistance in sublicensing IWF media, do not hesitate to call one of our contact persons or send us an email.

Contact person for sublicensing sections for film and television:
Elke Brehm / Tel.: +49 511 762-8138

Contact person for sublicensing films for public screening:
Thomas Werner / Tel.: +49 511 762-14222


A number of IWF films existing in analogue or digital format are not available online for technical or legal reasons. On request, most of these films can be viewed at TIB. IWF’s analogue film heritage is also accessible once again: a four-plate editing table for 16 mm and 35 mm film copies is available to enable users to view films for research purposes.

Would you like to submit a viewing request? Then give us a call or send us an email:

Paul Feindt
Tel.: +49 511 762-14221


Place where digital films can be viewed
Technische Informationsbibliothek (TIB)
Lab Nicht-Textuelle Materialien
Am Klagesmarkt 12
30167 Hannover, Germany

Place where analogue films can be viewed
Technische Informationsbibliothek (TIB)
Haus 2 - Außenmagazin
Bremer Straße 2
30880 Laatzen/Rethen, Germany

You can include videos in your personal watch list in the TIB AV-Portal, and retrieve them any time at a later date. This is how to save videos in your watch list:

  1. Log on to the TIB AV-Portal under the “Login” tab using your user name or TIB customer number and the appropriate password.
  2. Retrieve a video that you would like to save in your watch list.
  3. Click on the “Add to Watchlist” button below the video player.
  4. Give your watch list a name, and save it.
  5. You can retrieve the videos from your watch list by clicking on the “Watchlist” tab on the top right.
  6. Your watch list can be edited via the “Edit” button. In addition to changing the order of the videos you have saved, you can remove individual videos, and rename or completely delete the watch list.

We recommend the following citation format for citing videos:

[Author]: [Title], [Episode], [Series Title]. [Producer]. [Year of Production]. [https://doi.org/12.3456/789].


Skorupka, Sascha: Was ist ein Steckdosentaifun?, episode 8, Experiment der Woche. Artewis GmbH & Co. KG et al. 2011. https://doi.org/10.5446/397

Balke, Wolf-Tilo: Classification (13.01.2011), episode 10, Data Warehousing and Data Mining Techniques (WS 2010/2011). Technische Universität Braunschweig et al. 2011. https://doi.org/10.5446/327

Koepler, Oliver: VisInfo - a visual search system for scientific research data, Goportis Conference 2013. Leibniz Universität Hannover (LUH). 2013. https://doi.org/10.5446/10404

What is a DOI, and where can I find it?

A digital object identifier (DOI) is a clear, permanent digital identifier for objects such as electronic documents or videos available online. You can find the DOI in the metadata area below the video player. Copy the DOI link for citing the video, and insert it at the respective place in your document.

You can also cite individual segments of the video in the TIB AV-Portal. You will find the citation link for individual video segments immediately below the video player.

The contact page contains information about who to contact if you have any questions.

Download Open Data

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The German National Library of Science and Technology (TIB) aims to promote the use and distribution of its collections. In this context, TIB publishes the authoritative and time-based, automatically generated metadata of videos of the TIB AV-Portal as Linked Open Data. Please note that the data was partially generated by an automatic process and may therefore contain errors. You will find the data sets on the download page of the TIB AV-Portal.



    5 ms - page object


AV-Portal 3.7.0 (943df4b4639bec127ddc6b93adb0c7d8d995f77c)