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Re: [Ranger-users] Video files: thumbnail previews
From: |
niku |
Subject: |
Re: [Ranger-users] Video files: thumbnail previews |
Date: |
Mon, 29 Jul 2013 21:55:06 +0530 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
> @ niku
> avconv is broken for my distro and I don't have the time to look
> into it right now. Could you please test if the same syntax works
> for it (replacing 'ffmpeg' with 'avconv')? I think I'll add another
> setting for that.
The options of ffmpeg and avconv are supposed to be exactly the same,
except that for avconv you need to follow the correct order strictly.
However, if I substitute `avconv' for `ffmpeg' in your command, avconv
extracts the beginning frame, not the frame around the 10th second,
which ffmpeg extracts.
ffmpeg -itsoffset -10 -i input.wmv -vframes 1 -y /tmp/ffmpeg-its.png
--> gets the frame at around 10s
avconv -itsoffset -10 -i input.wmv -vframes 1 -y /tmp/avconv-its.png
--> gets the first frame
However, have you tried the option `-ss'? `-ss 10' substituted for
`-itsoffset -10', produces the desired result with both ffmpeg and
avconv. Further, on my system, it works much faster. With -itsoffset,
ffmpeg takes 1.80s to extract the frame at 10s. With -ss, ffmpeg takes
just 0.08s to extract the same frame! Also, the manpages of both
ffmpeg and avconv seem to suggest the use of -ss for extracting
images:
If you want to extract just a limited number of
frames, you can use the above command in combination
with the -vframes or -t option, or in combination with
-ss to start extracting from a certain point in time.
ffmpeg -ss 10 -i input.wmv -vframes 1 -y /tmp/ffmpeg-its.png
avconv -ss 10 -i input.wmv -vframes 1 -y /tmp/ffmpeg-its.png
--> both the commands get the frame at around 10s.
Note the `10', instead of the `-10' with -itsoffset.
- Re: [Ranger-users] Video files: thumbnail previews, (continued)
- Re: [Ranger-users] Video files: thumbnail previews, Germain Zouein, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Joshua Landau, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Germain Zouein, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Joshua Landau, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Joshua Landau, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Joshua Landau, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, Germain Zouein, 2013/07/28
- Re: [Ranger-users] Video files: thumbnail previews, niku, 2013/07/30
- Re: [Ranger-users] Video files: thumbnail previews, Joshua Landau, 2013/07/30
- Re: [Ranger-users] Video files: thumbnail previews, niku, 2013/07/30
- Re: [Ranger-users] Video files: thumbnail previews,
niku <=
- Re: [Ranger-users] Video files: thumbnail previews, Germain Zouein, 2013/07/29
- Re: [Ranger-users] Video files: thumbnail previews, niku, 2013/07/29
Re: [Ranger-users] Video files: thumbnail previews, niku, 2013/07/26