Moritz Barsnick wrote:
On Tue, Jan 05, 2016 at 13:30:07 -0600, Matthew Adams wrote:
I pulled the files off of the iPhone using iExplorer, a nice little
tool to get at the iOS filesystem.
Hmm. Something tells me this isn't the raw video as it comes from
your device, but it was manipulated by Google (Drive) after your
upload:
$ sha1sum variable-bitrate-sample.mov
3820bb93784835f2257299008fed2fafeaacd5c5
variable-bitrate-sample.mov $ ffmpeg -i variable-bitrate-sample.mov
ffmpeg version 2.6.5 Copyright (c) 2000-2015 the FFmpeg developers
[...] Metadata: creation_time : 2016-01-03 05:53:31 handler_name
: IsoMedia File Produced by Google, 5-11-2011
I don't think any Apple product inserts such metadata. ;-)
Googl(ouch!)ing a bit, it does seem iOS creates variable frame rate
videos. But usually, they are detected as such, or in other words,
the headers and timestamps properly reflect that.
So I think Google Drive ruined your video by doing some bad CFR
magic to it.
That's just plain out of order. Though as someone who puts samples on
free drive and hasn't noticed I just did a test.
Copied/renamed Jan22016-150PM-b6cs7K.mov to gtest.mov and uploaded with
browser.
https://drive.google.com/file/d/0BxP5-S1t9VEEd2FacGVJMmdmaHc/view?usp=sharing
At time of writing I am downloading exactly the same file.
I'll keep an eye on it to see if it changes!
I wonder if there is some setting/upload app involved here.
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