limitations in .h265 hevc MP4 files?

Started by Jeff Baker, October 01, 2016, 03:13:51 PM

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Jeff Baker

October 01, 2016, 03:13:51 PM
First, that facebook registration question is tricky... I still don't know if I got it right.
When I ran ExifTool for the first time on a .h265 MP4 video file from my Samsung NX1 camera, the listed data did not include things like shutter speed, iso, f stop or aperture like I get on the still image files. Just the file size (4K) and framerate, but that was about it it. Is this just the way it is with video files?
Best,
Jeff

StarGeek

#1
October 01, 2016, 05:47:26 PM
A lot of those items simply aren't relevant when it comes to video.  For example, in the case of Shutter Speed, the shutter is open the entire time the video is being recorded.   Odds are, if it isn't showing up in the output of Exiftool, it's not being recorded in the file.
"It didn't work" isn't helpful. What was the exact command used and the output.
Read FAQ #3 and use that cmd
Please use the Code button for exiftool output

Please include your OS/Exiftool version/filetype

Phil Harvey

#2
October 01, 2016, 06:11:57 PM
Hi Jeff,

Not obvious that "A facebook could be a book of" ... faces?  I've changed that question now.  I had re-done them a few times recently due to spam attacks, and it is hard coming up with new ones.

Some cameras store more information than others.  Canon stores full metadata (for the first frame, I guess).  I can't check right now but I wouldn't be surprised if Samsung didn't store much in information in MP4's.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

Jeff Baker

#3
October 01, 2016, 07:06:11 PM
It was whether faces was plural or not that had me stumped (or maybe something tricky like MySpace).
Anyway, the reason the whole exif video data came up was because when I exported a frame to post on DP Reciew for a different issue, it incorrectly reported the shutter speed at 1000. In video mode my shutter speed for 24fps video is always 1/50 so I knew something was amiss.
Mostly I was trying to recall the ISO and aperture settings from the original video file to for the issue at hand.
Thanks for the insight on limitations in exif when it comes to video. And the tool is great – none of my other programs could read the .h265 file at all other than video size and date using videolan VLC on OS X.

Canon includes some log color profile info but I'll have to see if it includes more camera settings info as well.
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