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VideoReplace
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VideoReplace

[Experimental]

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VideoReplace[video,{t1,t2}new]

replaces the video between t1 and t2 with the new video new.

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VideoReplace[video,{{t11,t12},…}new]

replaces multiple intervals with the same video new.

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VideoReplace[video,{{t11,t12}new1,…}]

replaces multiple intervals.

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VideoReplace[video,…,durfitting]

uses the specified durfitting method to replace an interval of a different duration.

Details and Options

Examples

open allclose all

Basic Examples  (1)Summary of the most common use cases

Replace the first second of a video with black frames:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-s6gj46

Show frames at every second:

In[2]:=2
✖
https://wolfram.com/xid/09chnf6pe-gxqb7i
Out[2]=2
In[5]:=5
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https://wolfram.com/xid/09chnf6pe-b2dbu4
In[6]:=6
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https://wolfram.com/xid/09chnf6pe-zqtlns
Out[6]=6

Scope  (11)Survey of the scope of standard use cases

Time Specifications  (6)

Replace a single interval of a video:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-154bvg
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-wto7bq

Show red, green and blue intensities over time:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-8fs7ed
Out[3]=3

Replace a single interval and show intensities over time:

In[4]:=4
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https://wolfram.com/xid/09chnf6pe-bwssrd
Out[5]=5

Replace multiple intervals with the same video:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-j8i266
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-gupfut
Out[2]=2

Replace multiple intervals with different videos:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-4it31j
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-ln7dx2
Out[2]=2

Specify intervals using time quantities:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-08vchh
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-wjekfx
Out[2]=2

Specify intervals using a number of frames:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-z0kk2l
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-k216rj

Show red, green and blue intensities of each frame:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-clim4o
Out[3]=3

Specify times or intervals relative to the end of the video:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-kdgcv7
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-8czdxm
Out[2]=2

Replace an interval starting 20 frames from the end:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-nhkraf
Out[3]=3

Fitting  (2)

By default, if the duration of replacement is longer than the specified interval, the video is trimmed:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-oshvo7
In[3]:=3
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https://wolfram.com/xid/09chnf6pe-v7gnb1
Out[4]=4

The duration of the result is approximately the same as the original video:

In[5]:=5
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https://wolfram.com/xid/09chnf6pe-nkkcj
Out[5]=5

This is equivalent to the "Fill" fitting mode:

In[6]:=6
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https://wolfram.com/xid/09chnf6pe-kg4mio
Out[6]=6

Use the "Insert" fitting mode to include all of the new video in the result:

In[7]:=7
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https://wolfram.com/xid/09chnf6pe-k2k4d7
Out[8]=8

The duration of the result has increased by the difference in duration of the new video:

In[9]:=9
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https://wolfram.com/xid/09chnf6pe-0tq4uk
Out[9]=9

If the new video is shorter than the specified interval, the "Insert" mode will only replace up to the duration of the new video:

In[10]:=10
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https://wolfram.com/xid/09chnf6pe-du21ip
Out[11]=11

The duration of the result has decreased by the difference in duration of the new video:

In[12]:=12
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https://wolfram.com/xid/09chnf6pe-ske1
Out[12]=12

By default, the new content is padded with black frames and silent audio if its duration is shorter than the specified replacement interval:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-4r5mbj
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-3rt75o
Out[2]=2

This is equivalent to the "Fill" fitting mode:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-xmxe9p
Out[3]=3

Use the "Insert" fitting mode to include all of the new video in the result:

In[4]:=4
✖
https://wolfram.com/xid/09chnf6pe-sxmfhm
Out[4]=4

New Content  (3)

Replace a segment of a video with a new video:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-v6qfnj

Replace a single interval and show intensities over time:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-k2q12t
Out[4]=4

Replace a segment of a video with an image:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-cf6bb7

The image is repeated for the duration of the replacement interval:

In[2]:=2
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https://wolfram.com/xid/09chnf6pe-d331t0
Out[2]=2

Replace a section of a video with constant color frames:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-oae7ha
In[2]:=2
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https://wolfram.com/xid/09chnf6pe-sebr2b
Out[2]=2

Options  (1)Common values & functionality for each option

ConformationMethod  (1)

The frame size is taken from the base video and new videos are conformed to that size:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-lla64a

Replace the second half of a video segment with frames that have a different size and aspect ratio:

In[7]:=7
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https://wolfram.com/xid/09chnf6pe-dif8ej

By default, frames from new videos are resized using the "Fit" method with black padding:

In[8]:=8
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https://wolfram.com/xid/09chnf6pe-c3vwp5
Out[8]=8

Specify a different fitting method:

In[9]:=9
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https://wolfram.com/xid/09chnf6pe-kcv90w
In[10]:=10
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https://wolfram.com/xid/09chnf6pe-wkfvhu
Out[10]=10

Properties & Relations  (2)Properties of the function, and connections to other functions

The properties of the original video, apart from duration, are not changed by default:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-5j1s8v

Compare video properties:

In[2]:=2
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https://wolfram.com/xid/09chnf6pe-hnokxj
Out[2]=2

Replace a section of the video with new content that has different properties:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-o137wv
In[4]:=4
✖
https://wolfram.com/xid/09chnf6pe-em101c
Out[4]=4

The default "Fill" method attempts to preserve the original duration:

In[7]:=7
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https://wolfram.com/xid/09chnf6pe-c64w9o
Out[7]=7

The duration may change when the "Insert" method is used:

In[8]:=8
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https://wolfram.com/xid/09chnf6pe-sx70vf

If the new video is longer than the replacement interval, the result will be longer than the original video:

In[9]:=9
✖
https://wolfram.com/xid/09chnf6pe-08yzo6
Out[9]=9

The replacement intervals apply to all tracks in the video:

In[1]:=1
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https://wolfram.com/xid/09chnf6pe-687lwr
Out[1]=1

Create a new video with one video and one audio track:

In[2]:=2
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https://wolfram.com/xid/09chnf6pe-bf940v
Out[2]=2

Replace the content between 1 and 2 seconds:

In[3]:=3
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https://wolfram.com/xid/09chnf6pe-d5mid8

Show the audio track of the resulting video:

In[4]:=4
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https://wolfram.com/xid/09chnf6pe-k6rioa
Out[4]=4

If the new video contains tracks not present in the original video, those are not included in the result:

In[5]:=5
✖
https://wolfram.com/xid/09chnf6pe-v8bmi
Out[5]=5

If the original video contains more tracks than the replacements, black frames and silence are inserted:

In[6]:=6
✖
https://wolfram.com/xid/09chnf6pe-z1ilze

The original audio track is padded with silence for the specified interval:

In[7]:=7
✖
https://wolfram.com/xid/09chnf6pe-6mj0xl
Out[7]=7
Wolfram Research (2021), VideoReplace, Wolfram Language function, https://reference.wolfram.com/language/ref/VideoReplace.html (updated 2021).
✖
Wolfram Research (2021), VideoReplace, Wolfram Language function, https://reference.wolfram.com/language/ref/VideoReplace.html (updated 2021).

Text

Wolfram Research (2021), VideoReplace, Wolfram Language function, https://reference.wolfram.com/language/ref/VideoReplace.html (updated 2021).

✖
Wolfram Research (2021), VideoReplace, Wolfram Language function, https://reference.wolfram.com/language/ref/VideoReplace.html (updated 2021).

CMS

Wolfram Language. 2021. "VideoReplace." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2021. https://reference.wolfram.com/language/ref/VideoReplace.html.

✖
Wolfram Language. 2021. "VideoReplace." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2021. https://reference.wolfram.com/language/ref/VideoReplace.html.

APA

Wolfram Language. (2021). VideoReplace. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/VideoReplace.html

✖
Wolfram Language. (2021). VideoReplace. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/VideoReplace.html

BibTeX

@misc{reference.wolfram_2025_videoreplace, author="Wolfram Research", title="{VideoReplace}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/VideoReplace.html}", note=[Accessed: 22-May-2025 ]}

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@misc{reference.wolfram_2025_videoreplace, author="Wolfram Research", title="{VideoReplace}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/VideoReplace.html}", note=[Accessed: 22-May-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_videoreplace, organization={Wolfram Research}, title={VideoReplace}, year={2021}, url={https://reference.wolfram.com/language/ref/VideoReplace.html}, note=[Accessed: 22-May-2025 ]}

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@online{reference.wolfram_2025_videoreplace, organization={Wolfram Research}, title={VideoReplace}, year={2021}, url={https://reference.wolfram.com/language/ref/VideoReplace.html}, note=[Accessed: 22-May-2025 ]}