Merge MP4 videos while appending EXIF metadata

[GISSimplified]

How to merge multiple MP4 videos while appending EXIF metadata in merged video.

[Phil Harvey]

You can use ffmpeg to merge the videos.  ExifTool can write static metadata to the resulting video (not EXIF because videos don't support EXIF metadata, instead use QuickTime or XMP tags).  But nothing I know of can write timed metadata (eg. GPS track) if that is what you want.

- Phil

[GISSimplified]

I am having multiple MP4 videos with coordinates stored in Quicktime tag. I have already merged video but want to combine metadata (including GPS coordinates with date and time) and apply to merged video.

[Phil Harvey]

Try this command:

exiftool -tagsfromfile ORIGINAL_FILE "-all:all<quicktime:all" MERGED_FILE

- Phil

[StarGeek]

You can also use the exif2xmp.args file to copy any EXIF tags into the corresponding XMP tags.

[GISSimplified]

Try this command:

exiftool -tagsfromfile ORIGINAL_FILE "-all:all<quicktime:all" MERGED_FILE

- Phil

I tried this command but it is not copying all quicktime metadata from source to destination MP4 file. Even multiple MP4 files having same Quicktime tag like Track1:GPSLatitude, Track1:GPSLongitude etc. How they will be copied into merged file. I want all of them to be retained rather than overwrite due to same tag name.

[Phil Harvey]

ExifTool creates only top-level tags in QuickTime-format files.  It won't write to Track1.   Also, see the QuickTime tags documentation to see which tags are writable (GPSLatitude/GPSLongitude aren't -- you need to use GPSCoordinates).

- Phil