I'm a total video noob as I work in SEO but I need to change the meta data in a video file so that Google will read a recent date.
If I inspect the mp4 files with an application I found (MediaInfo) it shows this
Encoded date : UTC 2011-08-10 22:09:14
Tagged date : UTC 2011-08-10 22:09:14
unfortunately the application only reads the data and won't let me change it
does anyone know of a very simple (and free, if possible) app that can let me update this info without having to re-encode the video files ?
thanks for any help you can give
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Hi - thanks for your reply
this may be a stupid question, but is remuxing a long process ? I've just tried re-encoding a 300 MB file and it took about 15 mins and I've got a LOT of files to update !
Not it's not long, but if your files are really big, it could take a few minutes. A 300 MB file should remux under a minute unless your computer is slow.
re-encoding != remuxing
You are comparing apples and oranges.
Remuxing (re multiplexing) is the process of taking the audio and video streams out of a video container and putting them in a new video container. Like taking a cake out of one box and putting it in another. The cake isn't changed and it's much faster than baking a new cake.
A quick remux with ffmpeg will eliminate the date/time metadata. Put this in a batch file and you can drag/drop files onto it:
"g:\program files\ffmpeg\bin\ffmpeg" -i %1 -vcodec copy -acodec copy "%~n1.remux.mp4"
Change the path to ffmpeg to wherever you have the program installed.
You could set the Encoded date and Tagged date (both are set with this) to any time you want:
ffmpeg -i input.mp4 -c copy -map 0 -metadata creation_time="2013-06-21 12:00:00" output.mp4
so ... there isn't a simple windows-based program with a UI that just lets you open a video file, edit the info and save, huh ? that would be too simple...
I'll try and get my head round that command-line stuff and read up on it if I can find some documentation
thanks for your help