[tracker] Editing DVD vob files is painful
@alsuren
Submitted by David Laban Assigned to David Laban @alsuren
Description
Use case:
I have the DVD of a dance workshop that I went to, and I want to cut the demos/recap videos up into short sections to help me practice more efficiently.
Steps (using a PAL dvd from Sweeden, if this matters):
I used dvdbackup to copy the files to my hard drive (as there is only a dvd drive in my docking station, and I need to use them at dance events)
I import the folder, and run into #T2759 "Timeout expires when importing very large clips". Also, the UI becomes unresponsive during the import.
I then play one of the clips that did import correctly, and notice that there is horrible tearing caused by the lack of deinterlacing (yes: dance videos contain a lot of horizontal movement)
Some of the videos (e.g VTS_01_2.VOB) are playable in the preview pane, but
a) don't contain a thumbnail preview
b) take an inordinately long time to seek into (again freezing the UI), and
c) can't be dragged into the project timeline (I think you might be grabbing the pointer and then freezing the UI, making the rest of X unusable until pitivi is killed from the command line).
I finally managed to cut out a video from one of the few dvd sections that worked (VTS_01_1.VOB), and tried to render it.
When I changed the muxer to matroskamux and hit Render, the "Render project" window sat there pretending to be doing stuff but actually not doing anything (no progress made; no CPU used).
I tried again using the default settings, and it took 8 minutes to get to 99%, then said "About -1h 59 minutes left" (as if the time had gone to negative 1 minute and the window interpreted this number in an imaginative way)?
So I managed to get something, but it took a few attempts. There is still a demo video that I would like an independent copy of, but which is on VTS_01_2.VOB, which I can't edit.
I will split this out into separate bugs (which block this one) after lunch. If a pitivi developer could run through the process of trying to extract a scene from a DVD (and see which of my issues they can reproduce and which they can't) that would probably save some bug traffic.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=646322