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api_core.cpp HTTP error 404 for mov thumbnail?

I'm using the Sync API and most of my image thumbnails download successfully but as I'm scrolling through my scrollview and new images begin to load I'll get this repeating and it seems to line up with when I try to download the thumbnail of a .mov

[WARNING] status: NOT_FOUND: api_core.cpp:227: HTTP error 404 [142018d3e799e2eb]
[ERROR] dload: download.cpp:154: DL FAILED: HTTP error 404 [142018d3e799e2eb]
[WARNING] status: NOT_FOUND: api_core.cpp:227: HTTP error 404 [cff7faae807b72ee]

I am checking to make sure a thumb exists before I try to download:

  DBFile* file;
    id key = path;
    if (info.thumbExists) {
        file = [self.filesystem openThumbnail:filesystemPath
                                           ofSize:thumbSize // 640x480 (next size down looks bad on retina iPad)
                                         inFormat:DBThumbFormatJPG
                                            error:&fileError];
   }

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Comments

Greg-DB

Sometimes, the retrieval or generation itself of a thumbnail can fail, even if the API expects a thumbnail to be available (i.e., thumbExists).

Is this happening with all .mov files you have, or only some? If it's only some, do you notice any pattern to the files, e.g., did they all come from the same camera, etc.?

Did thumbnails for these files previously work?

Stuart T.

These are files that I just moved into another folder on dropbox. They are originally made on an iPhone device as they were in my iPhone camera uploads directory. I'm not sure if it's all of them or one particular .mov at this time. This was the first time I've had these files so I've never seen if they previously worked. But I moved my entire directory of camera uploads into the root directory and all the new thumbnails for the .jpg's worked

Greg-DB

Thanks for the additional information! I'm looking into this, but it would help me track down why the thumbnail generation for these files is failing if I had a sample I could try. Can you share one or two of these .mov files for which the API isn't giving you thumbnail? You can share them privately by opening a ticket here if you'd prefer. Thanks in advance!