Changes Bitrate and File size after sync.

[altenae]

I hope someone is able to tell me what is going on here....

I have made a 4k 60PFS recording on my iphone 8 plus.

The file properties of this mov file is around 42 MB an the Bitrate is around 39000 KBPS..(see photo)

When this file is uploaded to Google Drive the file properties stays the same...(as expected)

However !!!

When I upload this file to dropbox the filesize became around 64 MB and the Bitrate has changed to 57000 (see photo)

The uploaded file is terrible to watch .... stuttering and stuttering etc....

Why is this changed after the upload to Dropbox ?
I would expect no modifications.

Have tested this a couple of times with the same outcome everytime.

Anyone ??

[Mark]

How are you uploading and how are you downloading (from where)?

[altenae]

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@Mark wrote:
How are you uploading and how are you downloading (from where)?

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From Iphone using the Google Drive and Dropbox app.

Uploading from Iphone 8 plus to Google drive = correct

Uploading from IPhone 8 plus to Dropbox = not correct.

[Mark]

You've not answered the question..... we cannot attempt to help if you wont. Dropbox doesnt change the files in anyway so something else is happening.

How are you redownloading them?

The website at www.dropbox.com/home and shared link etc.

[altenae]

I am redownloading bij the dropbox application on windows 10 and the sync tool on the Synology Nas server...
Both show the wrong Filesize and bitrate..

Also when I check the filesize in the dropbox webbrowser (so how it is on the the dropbox server) it also the wrong filesize...

It seems the change is done by the upload procedure.

The shared link of this example video:

https://www.dropbox.com/s/7ih72bmgs89lihb/Video%2029-09-17%2017%2009%2041.mov?dl=0

[Mark]

Are you using the Dropbox official apps to upload?

You using Camera Upload to add the file to Dropbox?

If so can you try adding it manually via the + symbol.

[altenae]

Are you using the Dropbox official apps to upload?

Yes

You using Camera Upload to add the file to Dropbox?

Yes

If so can you try adding it manually via the + symbol.

Did the manual with the + symbol and the share button ... tried all.
Stil the same adjustment to the file

[Mark]

iOS 11?
Which version of Dropbox?

I know there are some issues with uploading in iOS11 so it maybe worth logging a ticket at www.dropbox.com/support which you can then track at http://dropbox.zendesk.com

[altenae]

Yes correct IOS 11.01

Dropbox version IOS 64.3.4

Dropox version 35.4.20..

Also did the upload test with Onedrive ans just like Google drive no adjustments...

It only happen with Dropbox

[Mark]

You need to log a ticket with support I'm afraid then.