Video thumbnails are not generated anymore

Thanks for writing this up! That's correct, the API doesn't currently officially support video thumbnails, so I'm sending this along as a feature request.

Hi Gregory.

Can you please help provide some additional context around this. We have an app that was recently feature by Apple as one the the "Best New Apps" and our integration with Dropbox is a major feature for our users. It gave them easy and quick access to their media on Dropbox, including videos. 

Up until recently, these users could easily browse their Dropbox files and easily select the media they wanted because all videos and images returns thumbnails. Now, they have no visibility into the files they are browsing. 

This is obviously a challenge for us and the users that we share. Adding to the confusion is that through the native Dropbox app, thumbnails continue to be returned for all images and videos. 

Thanks in advance for your additional comments on this issue. 

James Kupernik
Solutions Architect
VidMob, Inc. 

Hi James, unfortunately I don't have any additional information on this right now. I'll send this along to the team though.

Hi Sergey & James,

We believe the issue has been resolved. Could you let us know if you're still seeing this regression?

Hi Ken

i just tested via the VidMob app and still seeing the same result of no thumbnails being returned for video files. 

Thanks,

James

Hi James, thanks for checking that. Can you share the relevant code snippet to reproduce this, so we can make sure we're addressing this properly? Thanks in advance! 

Hi Gregory

Our iOS developer is out until tomorrow, but I believe this is the section of code being called. 

PerformSync(^{

            [DropBlocks loadThumbnail:self.metadata.path

                               ofSize:imageSize

                             intoPath:localPath

                      completionBlock:^(DBMetadata *metadata, NSError *error)

             {

                 completionBlock([UIImage imageWithContentsOfFile:localPath]);

             }];

        });

Thanks!

Thanks! We're looking into it. If you can also share some sample values for self.metadata.path and imageSize though, that may also be helpful, just to make sure we're reproducing this exactly the same way.

Gregory 

If this next snippet doesn't make sense, i'll have to wait for Sergey to weigh in tomorrow, but here is the method in the Dropbox-iOS-SDK-Source that is being called. 

- (void)loadThumbnail:(NSString *)path ofSize:(NSString *)size intoPath:(NSString *)destinationPath 

{

    NSString* fullPath = [NSString stringWithFormat:@"/thumbnails/%@%@", root, path];

    NSString* format = @"JPEG";

    if ([path length] > 4) {

        NSString* extension = [[path substringFromIndex:[path length] - 4] uppercaseString];

        if ([[NSSet setWithObjects:@".PNG", @".GIF", nil] containsObject:extension]) {

            format = @"PNG";

        }

    }

    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObject:format forKey:@"format"];

    if(size) {

        [params setObject:size forKey:@"size"];

    }

    NSURLRequest* urlRequest = 

        [self requestWithHost:kDBDropboxAPIContentHost path:fullPath parameters:params];

    DBRequest* request = 

        [[[DBRequest alloc] 

          initWithURLRequest:urlRequest andInformTarget:self selector:@selector(requestDidLoadThumbnail:)]

         autorelease];

    request.resultFilename = destinationPath;

    request.userInfo = [NSDictionary dictionaryWithObjectsAndKeys:

            root, @"root", 

            path, @"path", 

            destinationPath, @"destinationPath", 

            size, @"size", nil];

    [imageLoadRequests setObject:request forKey:[self thumbnailKeyForPath:path size:size]];

}

Hi Gregory and Ken,

Thanks for your attention to this issue. Here are some details on how we reproduce this issue.

We use method:

- (void)loadThumbnail:(NSString *)path ofSize:(NSString *)size intoPath:(NSString *)destinationPath 

of class DBRestClient from official cocoapod Dropbox-iOS-SDK (version 1.3.13). Parameters:

path (self.metadata.path): "/camera uploads/2/2014-04-10 18.51.53.mov"
size: "l" (lowercase L)
destinationPath: ".../tmp/l-2014-04-10 18.51.53.mov" (... is just for short)

And we got this error in callback:

Error Domain=dropbox.com Code=415 "(null)" UserInfo={path=/camera uploads/2/2014-04-10 18.51.53.mov, size=l, root=dropbox, error=permanent failure - this image isn't supported by thumbnailing, destinationPath=.../tmp/l-2014-04-10 18.51.53.mov}

We get this issue for all videos. Image thumbnailing works for us in all cases.

I've just checked and yes — this issues is still 100% reproducable for us.

Thanks!

Sergey