Assume I load a *.mp4 video (with H.264 codec if this matters) into Avidemux.
This video contains the GPS location of the place of video recording in its header.
Now I re-encode (on Windows) the video into a new *.mp4 video file (with H.265 HEVC codec if this matters) with different resolution and bitrate).
Unfortunately the new, resulting video does NOT contain the former GPS resolution any more.
When I inspect the video file header with e.g. "exiftool" I am getting an error:
"Warning: [Minor] Tag 'composite:gpslatitude' not defined"
Thats bad. Very bad.
How can I tell Avidemux to copy the GPS location from original video too?
Is there a way to copy the header (or at least the GPS location part) to new video without full re-encoding?
Avidemux doesn't support location metadata and there are no plans to add it currently. FFmpeg does, you might want to try -map_metadata option (please search the documentation (https://ffmpeg.org/ffmpeg.html)), it should be able to extract and then apply metadata without re-encoding video or audio.