Video metadata not kept when exporting

If you export the video as unmodified original, you can add a XMP sidecar file with the IPTC data. This file will include the title,the description, the GPS coordinates, the keywords, but not the date.

So you could write the capture date into the description field to save it.

You can read the XMP sidecar files with Xcode or simply Text Edit.

Some applications will be able to apply the the XMP sidecar files when importing photos, but Photos for Mac can only write them but does not apply them reliably when importing.

I need to export the video with the metadata that i wrote on Photos.app.

The sidecar file will have the most recent metadata you added in Photos. That is the idea of the sidecar files. Export the unmodified original, so you do not lose quality by rendering it again, but put the metadata you added into a separate file. That is the best you can get, since the videos do not support the EXIF and IPTC tags like he image file formats do.

The XMP are hard to read, but when I tested it, the XMP had many metadata -see the underlined part. GPS, title, keywords. Did yo quit Photos to force it to close and update the library, before you exported the originals? I noticed that the sidecar files were more current, after I closed and reopened Photos.

<?xpacket begin='' id=''?>

<x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='XMP toolkit 2.9-9, framework 1.6'>

<rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns:iX='http://ns.adobe.com/iX/1.0/'>

<rdf:Description rdf:about='' xmlns:Iptc4xmpCore='http://iptc.org/std/Iptc4xmpCore/1.0/xmlns/'>

</rdf:Description>

<rdf:Description rdf:about='' xmlns:photoshop='http://ns.adobe.com/photoshop/1.0/'>

</rdf:Description>

<rdf:Description rdf:about='' xmlns:dc='http://purl.org/dc/elements/1.1/'>

<dc:description><rdf:Alt><rdf:li xml:lang='x-default'>date 17.9.2008</rdf:li></rdf:Alt></dc:description>

<dc:subject><rdf:Bag>

<rdf:li>Monkey</rdf:li>

</rdf:Bag></dc:subject>

<dc:title><rdf:Alt><rdf:li xml:lang='x-default'>Trauernde grüne Meerkatzen Oldupai Gorge 17.9.2008</rdf:li></rdf:Alt></dc:title>

</rdf:Description>

<rdf:Description rdf:about='' xmlns:photomechanic='http://ns.camerabits.com/photomechanic/1.0/'>

</rdf:Description>

<rdf:Description rdf:about='' xmlns:exif='http://ns.adobe.com/exif/1.0/'>

<exif:GPSLatitude>2,14.58600000S</exif:GPSLatitude>

<exif:GPSLongitude>34,50.19600000E</exif:GPSLongitude>

</rdf:Description>

</rdf:RDF>

</x:xmpmeta>

You can try to modify the creation dates with a tool like A Better Finder. , see this link: http://www.publicspace.net/ABetterFinderRename/version8.html

It is worth having, even if it is a bit expensive.

Or, if you do not mind the Terminal, try the free exiftool. http://www.sno.phy.queensu.ca/~phil/exiftool/

There is not much Automator support for Photos. The scripting interface for Photos does not allow much.

You could try this Apple Script and modify it according to your needs. Script: Batch Changing the Title to the Capture Date https://discussions.apple.com/docs/DOC-8432

Basically, it will write the capture date into the title field of a photo or video.

if you export your videos with the option to use the title as the filename, you will see the date saved in the filename.