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I'm searching for a package able to extract one image at a given time of a video stored in a C# MemoryStream (.Net Framework 4.6.2) (in memory, not on disk). I have found a lot of wrapper for FFmpeg (I've tried Xabe.FFmpeg, MediaToolkit, NReco.VideoConverter, which all work fine) but I could not find any handling a file in memory. So i'd like to know if someone already did this before I start making my own wrapper, which does not look easy from my standpoint. Or if You know of an open source wrapper that I could use / modify. Thank you.

To add some precisions, I'm working on a midleware on which Videos are uploaded to then be stored by a third party (I don't know where the files are stored) and I'd like to extract a Thumnail from the video (the image at 10 seconds of a video). I stay at your disposal if you need any details.

I can't use any command line tool or the libraries that I tried because I can't use the disk, it has to be in memory.

Pierre Alymat
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  • Hi, did you consider saving the video file to the disk, processing it to extract the thumbnail and then delete it ? I assume using one of the libraries you mentioned. – Smaiil Apr 12 '19 at 10:29
  • Possible duplicate of [Get thumbnail image of video file in C#](https://stackoverflow.com/questions/15702031/get-thumbnail-image-of-video-file-in-c-sharp) – Paul Turner Apr 12 '19 at 10:34
  • I can't have a direct access to the disk, and it is not a duplicate, the objective is to be able to do basicaly the same thing but with the file in memory – Pierre Alymat Apr 12 '19 at 12:22
  • Why can't you use the disk? –  Apr 12 '19 at 13:43
  • I do not have permissions – Pierre Alymat Apr 12 '19 at 14:22
  • Did you solve your problem? I'm facing a similar one trying to extract a thumbnail from a video uploaded to an Azure Api – Matias Masso Sep 07 '21 at 17:17
  • @MatiasMasso and Pierre Alymat did you get your answer? I have a streams for super large files that I don't want to save to disk, and just want to get video length and thumbnails from using memory stream. – Chris Jun 07 '22 at 23:17

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