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please, who can help me here with a small doubt...
I have a PNG image (720x1280) and I would like it to be an overlay of a MP4 video.
I have a MP4 video (720x405) with 10 minutes leght.
This MP4 video I would like to put in position it at coordinates x/y 0x437 of this overlay (align center).
I want to use the ffmpeg command to create a new MP4 video.
So, MP4 video with 10 minutes lenght will hav a PNG overlay image with 10 minutes length too.
Could anyone support this idea?
Thanks so much.
I create a PNG overlay and a MP4 video.
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Closed 11 months ago.
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I want to build something like a digital photoframe with my Raspberry Pi.
On the Raspberry is RaspianOS and the imageviewer feh (version 3.6.3) installed.
As I read from the documentation, I expect this command
feh -qrYzFD10 ~/Pictures to display images in an endless loop, so after the last image the slideshow restarts with the first image.
But if i run this command, the slideshow stops after the last image. In the documentation I could only find the parameter --cycle-once which stops the slideshow after the last image, but i want it to be endless.
Did I miss something here?
like David guessed it above, there was some issue with an image.
I deleted the first non shown image and it worked.
There was no error shown, only hint was the image was really big.
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Closed 5 years ago.
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i need to watermark a video file.
i have FF-MPEG Linux server and ff-mpeg is installed by default
plz reply me the command of watermarking for below details
1. The source file is Input.mp4
2. the Target file is Output.mp4
3. the watermark file Watermark.png
please send me the Linux commands.
is there anyone know, please reply soon
According to this site it should be something like:
ffmpeg -i Input.mp4 -i Watermark.png -filter_complex "overlay=10:10" Output.mp4
10:10 are the coordinates from the top and from the right for the overlay. (In this example 10 pixels from the top and 10 pixels from the right)
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Closed 8 years ago.
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I need to use ffplay to open a video file, but i need to pass it x,y coordinates so i can have it play the video where I want it to.
As default ffplay simply opens the video at the top left corner.
I've tried searching for options in ffplay but i couldnt find it.
Also tried using window managers like fluxbox, again couldnt find the command)
Please note that I need to run it as a shell command.
Any Help would be appreciated.
Thanks in Advance
I think it is a job for xdotool.
Devilspie can be used also.
For instance, if you play best_movie.avi in ffplay, moving the window will be as easy as:
xdotool search --name best_movie windowmove 100 100
HTH
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Closed 8 years ago.
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I'm trying to compress an mp4 file to reduce the file size. I am using a Debian box.
The file is around 701 MB. First, I tried bzip2, which compressed it down to like 700MB, then I tried lrzip with zpaq, took like 5 mins to compress, and only brought it down to like 695 MB... Am I doing something wrong?
mp4 (or MPEG4) is already a very compressed video format, which uses advanced coding specific for video.
You won't be able to compress it more using loseless zip algorithms like bzip. What you can do is transcode the file to lower its video quality using some kind of transcoder (such as HandBrake).
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Closed 6 years ago.
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how do I get a list of amplitudes from a audio file using a linux command line tool ?
Do you mean getting all the individual samples as text? SoX can do that.
$ sox file.wav file.dat
will take an audio file file.wav, and generate a text file file.dat with a column for the timebase in seconds, and a column for each audio channel scaled by the maximum possible value.