Open from project archive (or unpacked project archive)
Submitted by Eliot Blennerhassett
Assigned to Eliot Blennerhassett
Make it possible to open a project from the file created by "Export as Archive", or at least from the unpacked archive.
Currently the .xges file in the archive contains the absolute paths of the original files (assets), while the archive itself contains paths under projectname-export/ relative to the creating user's home directory (or / if some files are outside user's home) When the archive is unpacked, Pitivi can not find the files because the absolute paths are different.
E.g. a project has common prefix in file paths "/home/emily/", but after unpacking, actual prefix of unpacked files is "/home/eliot/video_projects/project1-export/"
If the former prefix is replaced with the latter in the .xges file, the project can be opened without error.