# How to create a Thumbnail Seeking File and vtt (SubTitle and caption File)

**URL:** <https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362>\
**Category:** Support\
**Created:** [October 6, 2023, 12:06pm UTC](https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362 "2023-10-06T12:06:08Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rajeshrai2006](https://avatars.discourse-cdn.com/v4/letter/r/e99b99/32.png) [@rajeshrai2006](https://community.bitmovin.com/u/rajeshrai2006)\
**Post date:** [October 6, 2023, 12:06pm UTC](https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362/1 "2023-10-06T12:06:08Z")

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How to use the bitmovin service to build the thumbnail-seeking file and vtt (Close Caption) Files.  
According to the documentation, it appears that BitMovie Player allows thumbnail previews and subtitles, just as YouTube, however, I can find no docs or guides that suggest that these files can be created instantly through encoding.

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**Author:** ![ludovic.michaud](https://sea1.discourse-cdn.com/flex015/user_avatar/community.bitmovin.com/ludovic.michaud/32/811_2.png) [@ludovic.michaud](https://community.bitmovin.com/u/ludovic.michaud)\
**Post date:** [October 6, 2023, 6:14pm UTC](https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362/2 "2023-10-06T18:14:10Z")

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Hi,  
Our encoder supports sprites thumbnails. There is an API for that

> **[Encoding - Thumbnail generation support for VoD](https://developer.bitmovin.com/encoding/docs/encoding-thumbnail-generation-support-for-vod)**
>
> CompatibilityThe table below summarizes the thumbnails types supported by Bitmovin Encoding. Thumbnail TypeProtocolThumbnail containerImage FormatSingle imageNANone (Images only)jpeg / pngSpritesHLS / DASHWebVTTjpeg / pngSpritesDASHImage Adaptation...

[https://developer.bitmovin.com/encoding/reference/postencodingencodingsstreamsspritesbyencodingidandstreamid](https://developer.bitmovin.com/encoding/reference/postencodingencodingsstreamsspritesbyencodingidandstreamid)

Let us know in case you have any questions.

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**Author:** ![alec.downs](https://sea1.discourse-cdn.com/flex015/user_avatar/community.bitmovin.com/alec.downs/32/832_2.png) [@alec.downs](https://community.bitmovin.com/u/alec.downs)\
**Post date:** [October 20, 2023, 12:26am UTC](https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362/3 "2023-10-20T00:26:20Z")

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Hi [Rajeshrai2006](https://community.bitmovin.com/u/rajeshrai2006), I work for AI-Media, a Bitmovin Valued Partner and global captioning solutions provider. We have different ways of creating recorded closed captions, both automated and human-created. Feel free to drop me a line on here or via email at [alec.downs@ai-media.tv](mailto:alec.downs@ai-media.tv).

Cheers,  
Alec.

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**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/bitmovin/original/1X/1ab86334145095b0af9c5b924fa3ae6d920b6482.png) [@system](https://community.bitmovin.com/u/system)\
**Post date:** [October 23, 2023, 8:32pm UTC](https://community.bitmovin.com/t/how-to-create-a-thumbnail-seeking-file-and-vtt-subtitle-and-caption-file/2362/4 "2023-10-23T20:32:12Z")

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