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Since the file type of the thumbnails has been changed, the asset streamer returns the response header Content-Type: image/webp instead of the correct response header Content-Type: image/jpeg for existing thumbnails. Most browsers should be able to display the thumbnails despite of this. If it becomes an issue, the existing thumbnails can either be re-generated as described above, or the thumbnail formats can be modified to be of the type jpeg.

Old media formats

After updating to 5.10, at most 200 new old media formats can be created. If you need to create an old media format after upgrading to 5.10, please reach out to RnD to share your use case. Ideally, the new transcode system should be able to accommodate your use case.