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El 2017-02-15 a las 16:49 -0000, Gerhard Kühbauer escribió:
Am 2017-02-14 um 23:49 schrieb Carlos E. R.:
From one of those I took a clip:
dd if=Cine.mpeg of=clip.mpeg2 bs=1M count=5
being at the start of the movie, it is just the commercials. I'll mail
that in an instant.
Here goes.
And thanks, see if you can find out something.
MPEG4-AVC in an MPEG-TS-container... Interesting! There is no problem
with the video itself. Every decent videoplayer plays it fine without
any problems, although at first it wasn't even recognized as a
videofile. My first try of editing it was with Avidemux and there were
no problems doing that. When I tried to do the same with Vidcutter the
following happened: http://i.imgur.com/rwekRuK.png
Yes, that is the problem I was trying to describe.
Very strange & definitely unusable! I don't know what exactly is causing
this weird behaviour of Vidcutter, but it seems to have something to do
with the quite unusual combination of videocodec/format/container.
Fortunately there is a very easy solution to fix this problem - simply
put your videos in an another "container". In my humble opinion mkv
(Matroska) would be a good choice . This can be done with:
- ffmpeg -i clip.mpeg2 -vcodec copy -acodec copy clip.mkv or
- mkvmerge -i clip.mpeg2 -o clip.mpeg2.mkv
Mkvmerge is part of mkvtoolnix and also available with a gui.
The difference: http://i.imgur.com/tkpOd4w.png
Strangely exactly the same video, just in another container, can be
opened and edited by Vidcutter without any problems.
Without recoding? You use the "copy" codec. Curious!
The quality of the
video stays exactly the same and process is very fast. Yes, that's
another workaround regarding Vidcutter for you, but at least it gives
you the possibility to edit your videos with a working preview. It is
planned that the next major release of Vidcutter will be using libmpv
instead of the QMediaPlayer/GStreamer and maybe that will solve your
issue. Nonetheless I think you should let the developer know of this
particular problem - just to make sure the issue will be hopefully &
definitely solved in the next releases...
Sure, I'll do.
Those files also have a sync problem, but I have an ffmpeg command that
corrects it. Let's see if I can find it... It would be another way to
process with vidcutter, use the already processed stream.
I think I used this:
ffmpeg -i "input.mpeg" -copyts -map 0:0 -map 0:1 -map 0:2 -c:v libx264 -preset ultrafast
-vf crop=1920:804:0:138 -c:a copy "output.mkv"
I will try that on this movie and comment back. Without the crop filter,
not needed.
I will also try your method, it will process much faster.
Thanks!
- --
Cheers
Carlos E. R.
(from 42.2 x86_64 "Malachite" (Minas Tirith))
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