[LAU] OT - syncing partially out of sync video and audio in existing files

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To: A list for linux audio users <linux-audio-user@...>
Date: Friday, June 10, 2011 - 3:58 pm

Hi,
sorry for abusing this list for a mostly video editing question, but I
didn't find a proper list and knew that we have some video people on
this list.

I'd like to fix some videos that have partially out of sync video and
audio, meaning that beginning at a certain point in the video the audio
is suddenly out of sync by a couple of seconds. There's no constant
change, the delay seems fixed once it's there.

I wonder how to fix such a thing. The files are xvid encoded videos and
vbr mp3 audio inside avi containers. I thought it should be reasonably
easy to cut and move the audio (re-encode if unavoidable, but I know
it's in principle possible without) and put it back in a container, but
I didn't manage.

Can someone recommend a program/workflow that would allow this?

I tried:
- Avidemux: seems like actual editing is not what this program was
written for, couldn't figure it out, but it seems close

- openshot: couldn't figure out how to separate video/audio

- kino: seems to only work with DV-files, apparently takes ages to
decode the file, doesn't seem to be what I need

- openmovieeditor: I figured it might work by dragging the file to both
a video and an audio track, but I got extremely garbled audio output,
no idea what's wrong

- cinelerra-cv: Doesn't start. No error message, it simply shows no
window, nothing. Well, it does something with the screen, but it shows
nothing.

- pitivi: Doesn't seem like it can play back the video. I can drag the
video to the tracks and it starts to draw a waveform, I guess no video
thumbnails because of: gst.ElementNotFoundError: pngenc
Doesn't seem to be able to play the video.

- kdenlive: would require me to install 30 additional packages, total
about 200MB, no thanks.

I thought it would be a simple task, really nothing fancy. Seems like I
was wrong.

Regards,
Philipp

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Messages in current thread:
[LAU] OT - syncing partially out of sync video and audio in ..., Philipp, (Fri Jun 10, 3:58 pm)
[LAU] A3 video prev: syncing partially out of sync video and..., Philipp Überbacher, (Fri Jun 10, 10:44 pm)
Re: [LAU] A3 video prev: syncing partially out of sync video..., Philipp Überbacher, (Mon Jun 13, 9:44 am)
Re: [LAU] A3 video prev: syncing partially out of sync video..., Alexandre Prokoudine, (Mon Jun 13, 8:45 pm)
Re: [LAU] A3 video prev: syncing partially out of sync video..., Alexandre Prokoudine, (Mon Jun 13, 9:06 pm)
Re: [LAU] A3 video prev: syncing partially out of sync video..., Alexandre Prokoudine, (Mon Jun 13, 9:39 pm)
Re: [LAU] A3 video prev: syncing partially out of sync video..., Alexandre Prokoudine, (Mon Jun 13, 9:16 pm)
[LAU] Issues with distros (and GTK2?) prev: A3 video, Ralf Mardorf, (Sat Jun 11, 8:25 am)
Re: [LAU] Issues with distros (and GTK2?) prev: A3 video, Ralf Mardorf, (Sat Jun 11, 10:39 am)
Re: [LAU] OT - syncing partially out of sync video and audio..., Philipp Überbacher, (Fri Jun 10, 6:18 pm)