Code review comment for lp://staging/~fboucault/thumbnailer/new_qml_api

LGTM. One thing to note is that there are two queues called video and image. The image queue deals with other image types besides images, such as audio files (and possibly in the future also pdf files, libreoffice docs etc). Thus it might make sense to rename it s_otherQueue, s_basicQueue or something like that. This is totally up to you, though, and not a requirement.