anti-shake post-filter for video?

A lot of cameras these days - both still and video - have some sort of
"anti-shake" facility. I presume they work by having a sensor somewhat
larger than nominal, doing some sort of frame-to-frame correlation, and
discarding bits around the edge.

Anyone know of something that will apply anti-shake to already-captured
videos? Obviously if it exists, it'll result in a final clip of lower
resolution as it discards the margins, and I don't know how it would
handle scene changes.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

"I'm not against women. Not often enough, anyway." - Groucho Marx

"J. P. Gilliver (John)" wrote in message
...
A lot of cameras these days - both still and video - have some sort of
"anti-shake" facility. I presume they work by having a sensor somewhat
larger than nominal, doing some sort of frame-to-frame correlation, and
discarding bits around the edge.

Anyone know of something that will apply anti-shake to already-captured
videos? Obviously if it exists, it'll result in a final clip of lower
resolution as it discards the margins, and I don't know how it would
handle scene changes.

I've seen something like this in Adobe Premiere Elements 11. It seemed to do
a surprisingly good job with some video that my wife shot of penguins on a
beach, both from land and from a Zodiak RIB (small inflatable boat). The
movement was slower, smaller amplitude and less noticeable compared with
rapid, random shaking.

It is a harder job because it can't rely just on accelerometers in the
camera to determine amount of movement (and therefore correction needed) but
must also examine the image to keep certain objects static in the frame.

On 29/04/2019 13:37:43, J. P. Gilliver (John) wrote:
A lot of cameras these days - both still and video - have some sort of
"anti-shake" facility. I presume they work by having a sensor somewhat larger
than nominal, doing some sort of frame-to-frame correlation, and discarding
bits around the edge.

Anyone know of something that will apply anti-shake to already-captured
videos? Obviously if it exists, it'll result in a final clip of lower
resolution as it discards the margins, and I don't know how it would handle
scene changes.

Never used this so cannot comment on its usefulness
https://www.ashampoo.com/en/usd/pin/...-stabilization

other software
https://filmora.wondershare.com/vide...-software.html

https://windowsreport.com/video-stab...re-windows-10/

--
mick

In article , says...

A lot of cameras these days - both still and video - have some sort of
"anti-shake" facility. I presume they work by having a sensor somewhat
larger than nominal, doing some sort of frame-to-frame correlation, and
discarding bits around the edge.

Anyone know of something that will apply anti-shake to already-captured
videos? Obviously if it exists, it'll result in a final clip of lower
resolution as it discards the margins, and I don't know how it would
handle scene changes.

Hi John

Microsoft MovieMaker can do this. In my german version I choose
VideoTools/Bearbeiten/Videostabilisierung/Bildstabilisierung

Regards
Reinhard

J. P. Gilliver (John) wrote:
A lot of cameras these days - both still and video - have some sort of
"anti-shake" facility. I presume they work by having a sensor somewhat
larger than nominal, doing some sort of frame-to-frame correlation, and
discarding bits around the edge.

Anyone know of something that will apply anti-shake to already-captured
videos? Obviously if it exists, it'll result in a final clip of lower
resolution as it discards the margins, and I don't know how it would
handle scene changes.

Out of an abundance of laziness (untested)...

http://blog.gregzaal.com/2014/05/30/...n-with-ffmpeg/

ffmpeg -i input.mov -vf deshake output.mov

https://www.imakewebsites.ca/posts/2...-and-vid.stab/

# two pass encoding, bitrate placed in like-named logfile, vid.stab method places vectors in extra log.
# compressor tuned for "film"

ffmpeg -t 5 -i GOPR7182.MP4 -vf vidstabdetect=stepsize=32:shakiness=10:accuracy=10 :result=transform_vectors.trf -f null -

ffmpeg -t 5 -i GOPR7182.MP4 -y -vf vidstabtransform=input=transform_vectors.trf:zoom= 0:smoothing=10,unsharp=5:5:0.8:3:3:0.4,scale=480:-1 -vcodec libx264 -tune film -an stabilized.mp4

HTH,
Paul

In message , mick
writes:
On 29/04/2019 13:37:43, J. P. Gilliver (John) wrote:
A lot of cameras these days - both still and video - have some sort
of "anti-shake" facility. I presume they work by having a sensor
somewhat larger than nominal, doing some sort of frame-to-frame
correlation, and discarding bits around the edge.

Anyone know of something that will apply anti-shake to
already-captured videos? Obviously if it exists, it'll result in a
final clip of lower resolution as it discards the margins, and I
don't know how it would handle scene changes.

Never used this so cannot comment on its usefulness
https://www.ashampoo.com/en/usd/pin/...re/video-stabi
lization

$15. I could afford that, but needless to say freeware is nicer.

other software
https://filmora.wondershare.com/vide...tabilizer-soft
ware.html

Thanks, that's a good list. In particular, it mentions the Deshaker
plugin for VirtualDub (http://www.guthspot.se/video/deshaker.htm); the
embedded video also mentions the FFInputDriver plugin that enables
VirtualDub to read a lot more formats, including .mp4
(https://codecpack.co/download/FFInputDriver.html). Since I'm familiar
with VirtualDub, I'm trying that. [It is _crawling_ - about one frame
every 3 seconds, and that's just the first pass!; however, it's hardly
using any CPU, so I presumably have to find some setting to let it have
more.]

https://windowsreport.com/video-stab...re-windows-10/

I'm on 7, but I had a look anyway: seems to cover much (possibly
exactly) the same softwares as the above list (including the VirtualDub
plugin). [I posted in 7 and XP as I guessed anything that works in XP
would probably work in 7, probably quickly.]

Thanks for the links.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

The breathtaking wonders of nature revealed to the soothing tones of Sir David
Attenborough. Life doesn't get much better than that.
- Ben Preston, Radio Times editor (2016/11/26-12/2)

In message , Reinhard
Skarbal writes:
[]
Hi John

Microsoft MovieMaker can do this. In my german version I choose
VideoTools/Bearbeiten/Videostabilisierung/Bildstabilisierung

Regards
Reinhard

Vielen Dank; I might give it a look if DeShaker or ffmpeg don't work out
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

The breathtaking wonders of nature revealed to the soothing tones of Sir David
Attenborough. Life doesn't get much better than that.
- Ben Preston, Radio Times editor (2016/11/26-12/2)

In message , Paul
writes:
[]
Out of an abundance of laziness (untested)...

http://blog.gregzaal.com/2014/05/30/...n-with-ffmpeg/

ffmpeg -i input.mov -vf deshake output.mov

Is there anything your beloved ffmpeg can't do! Thanks for that. I've
tried it, on the same file VirtualDub/DeShake is pounding away at; it
rattled through it at about 10 frames per second (VD/DS about one frame
every two to four seconds!). Looking at the result (about three times
the size of the input .flv file), I'm not sure; I do notice it's the
same size (in pixels) as the input, and occasionally I can see along the
edges (bottom and right, at least) a sort of sometimes tearing (like
from a videotape), sometimes folding.

https://www.imakewebsites.ca/posts/2...gopro-video-wi
th-ffmpeg-and-vid.stab/

I'll have a look at that later perhaps (-:

# two pass encoding, bitrate placed in like-named logfile, vid.stab
method places vectors in extra log.
# compressor tuned for "film"
[]
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

The breathtaking wonders of nature revealed to the soothing tones of Sir David
Attenborough. Life doesn't get much better than that.
- Ben Preston, Radio Times editor (2016/11/26-12/2)

J. P. Gilliver (John) wrote:
In message , Paul
writes:
[]
Out of an abundance of laziness (untested)...

http://blog.gregzaal.com/2014/05/30/...n-with-ffmpeg/

ffmpeg -i input.mov -vf deshake output.mov

Is there anything your beloved ffmpeg can't do! Thanks for that. I've
tried it, on the same file VirtualDub/DeShake is pounding away at; it
rattled through it at about 10 frames per second (VD/DS about one frame
every two to four seconds!). Looking at the result (about three times
the size of the input .flv file), I'm not sure; I do notice it's the
same size (in pixels) as the input, and occasionally I can see along the
edges (bottom and right, at least) a sort of sometimes tearing (like
from a videotape), sometimes folding.

https://www.imakewebsites.ca/posts/2...gopro-video-wi
th-ffmpeg-and-vid.stab/

I'll have a look at that later perhaps (-:

# two pass encoding, bitrate placed in like-named logfile, vid.stab
method places vectors in extra log.
# compressor tuned for "film"
[]

In the second example, you can see the same options
embodied in this software. Which suggests someone "dressing up"
FFMPEG in a GUI housecoat.

https://www.thewindowsclub.com/video...lizer-software

shakiness 5
accuracy 15
stepsize 6
mincontrast 0.3
smoothing 10

*******

Someone here addresses stabilizing a bicycle video. (Sheldon
passed away some years ago, so others run the site now, and
there never used to be advertising.)

https://www.sheldonbrown.com/deshaker.html

Paul

In message , Paul
writes:
[]
In the second example, you can see the same options
embodied in this software. Which suggests someone "dressing up"
FFMPEG in a GUI housecoat.

https://www.thewindowsclub.com/video...eo-stabilizer-
software

Hmm, homepage http://www.av2video.com/video-deshake.htm - or if you look
at http://www.av2video.com/, there's also a utility for removing
unchanging stretches (from, e. g., CCTV captures).

shakiness 5
1-10
accuracy 15
1-15
stepsize 6
mincontrast 0.3
0-1
smoothing 10

The figures shown are the defaults. Unusually (but works well here), the
function of each setting is explained on the settings page itself.
*******
I tried it with the defaults; it certainly runs quite fast. I think it
can also output in a range of formats - unless "Video Format Converting"
is for setting the input format, but ffmpeg seems quite good at
detecting that anyway. The output without "Video Format Converting"
ticked was a .flv file, but that could have been because the input was a
..flv file.

Someone here addresses stabilizing a bicycle video. (Sheldon
passed away some years ago, so others run the site now, and
there never used to be advertising.)

https://www.sheldonbrown.com/deshaker.html

Paul
Describes the DeShaker filter for VirtualDub again, with many tips
specific to bicycle-shot video (helmet or bike mounted).
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

That's how he [Dr. Who] seems to me. He's always been someone who gets the
/Guardian/. There are some parts of the universe where it's harder to get hold
of. - Peter Capaldi (current incumbent Doctor), RT 2016/11/26-12/2