Community Digest

Top new questions this week:

Problem combining multiple filters with ffmpeg

I'm trying to generate a video file out of 3 files: file #1 and #2 are both dynamically generated image list file; file #3 is a dynamically generated pcm file; I need to slow down or speed up the ...

ffmpeg encoding  
asked by user3900456 1 vote

Matte only over items of a specific color?

Example scenario: I have 4 boxes. Box 1 is blue, Boxes 2 & 3 are a specific color of red and Box 4 is green. I would like Box 1 (blue) to only be visible when overlapping a red box. If Box 1 ...

after-effects after-effects-expressions color after-effects-scripting  
asked by Jacob Crocker 1 vote
answered by Greg 0 votes

Vegas Pro Chroma Key not working properly

After I start doing chroma key with the following image With black blackground it gets well But when I try to make the background white After I tune it, it starts to be blue What am I doing wrong?

vegas-pro greenscreen chromakey  
asked by DiogoSaraiva 1 vote

Duplicate layer multiple times automatically, and randomize position/start time of each copy, in After Effects

I've seen this done in many programs. For example in the 3D world you can create a branch out of a single leaf, and a tree out of a single branch, automatically, by randomizing position and start of ...

asked by Wes 1 vote
answered by tomh 0 votes

Greatest hits from previous weeks:

How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream?

Note: I posted same question to stackoverflow a short time before, when I have not found this comunity yet. I repost this since the question is more suitable to this community. 1. What I tried I ...

ffmpeg avchd h.264  
asked by kaorukobo 20 votes
answered by v010dya 9 votes

Make white background in MP4 movie transparent

I have a short animation clip made with PyMOL software (visualizing molecules), in the MP4 format. I am going to use this animation in future presentations, and it would look much better if the ...

asked by Yoda 1 vote
answered by 5Diraptor 3 votes

ffmpeg Color Correction: Gamma, Brightness and Saturation

How is ffmpeg used with a video filter circa 2017 to adjust gamma/contrast, brightness and saturation? Stack Exchange resources that are a few years old point to the filter mp=eq2=, but it seems to ...

ffmpeg color-correction  
asked by P A N 32 votes
answered by P A N 35 votes

What is the cheapest camera I can plug external microphone to?

I am working on some homemade lectures so I need good quality of sound, but unfortunately I do not have any budget so far(amateur stuff). I am looking for a camera that can shoot in Full HD and can ...

camera microphone  
asked by Mateva 4 votes
answered by timonsku 6 votes

How can I create a 1920x1080p25 preset in Premiere Pro CS4?

I need to edit some source material that comes in 1920x1080p25, with a pixel aspect ratio of 1. However, I'm missing the presets for this, and the closest I can find is HDV 1080p25, which would be ...

premiere cs4 full-hd  
asked by slhck 1 vote

How to change active camera in after effects ( or render a different camera )

I added a camera to my comp, however, when I render it uses the active camera, and not camera1. How do I Either make camera1 my active camera, or make it so that I can render out camera1

after-effects camera animation-rendering  
asked by user379468 7 votes
answered by the Ritz 8 votes

How to use mouse drag gesture to position & size a still image in Premiere Pro CS6

I would like to be able to position a still image using the mouse/pointer directly on the image, to be able to drag the whole image around or resize it by dragging one of its corners or sides. I'm ...

premiere cs6  
asked by therobyouknow 5 votes
answered by timonsku 8 votes

Can you answer this question?

Is there a list of input variables?

There is an article that says you can scale a video to be a multiple or fraction of the input size like this: -vf "scale=iw/2:ih/2" to scale by half Are there any other symbols for input ...

asked by Bart Lederman 1 vote
answered by Gyan 0 votes
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