Video file appears in the dash even before its fully copied over to the phone, results in a black thumbnail

[Omer Akram]

I paste a 350mb video on my Ubuntu phone (mako). While the file was being pasted a thumbnail appeared in the video scope. Since the video was never fully copied the thumbnail is black.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: mediascanner 0.3.93+13.10.20131011-0ubuntu1
Uname: Linux 3.4.0-3-mako armv7l
ApportVersion: 2.12.5-0ubuntu2
Architecture: armhf
Date: Mon Oct 14 16:40:49 2013
InstallationDate: Installed on 2013-10-14 (0 days ago)
InstallationMedia: Ubuntu 13.10 - armhf (20131014)
MarkForUpload: True
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SourcePackage: mediascanner
UpgradeStatus: No upgrade log present (probably fresh install)

[Jim Hodapp (jhodapp)]

I'm curious how the mediascanner is setup to do thumbnailing. Does it seek a certain static amount of time into the movie to capture a frame, or does it take the first frame (I wouldn't guess it'd do this)?

Omer, are you that it didn't just catch a black frame by random chance? I know the mediaplayer-app's scene preview thumbnailing has support to detect and skip purely black (and I think white) frames.

[Omer Akram (om26er)]

Jim, I reflashed and pasted the same video file again and again the problem happened. as I said I think since the video is not fully copied and mediascanner tries to add the thumbnail all it gets is a black thumbnail.

[Jim Hodapp (jhodapp)]

Omer, I would expect the same result. But what I want to make sure of, is that the thumbnailer isn't just selecting what is always a black frame in the video. Can you make sure of that? To do that, you need to see how far into the video the thumbnailer seeks before selecting a single frame to decode and use.

[Michi Henning (michihenning)]

mediascanner is no longer being maintained, marking as won't fix.