Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [ffmpeg]

Media tool with support for multiple codecs, filters, and containers. Include your actual command and the complete console output when asking questions involving FFmpeg tools. An easy way to do this is by adding `-report` to your command and pasting the contents of the logfile generated. For ...

0
votes
0answers
9 views

Concatenation of m4a files is either too long or too short

I want to concatenate two m4a files, one 20:49 long and the other 10:23 long. Following this page, the first option is: ffmpeg -i 'concat:file1.m4a|file2.m4a' -c copy output.m4a It only processes ...
0
votes
0answers
23 views

Trim audio by length video FFmpeg

I am trying to overlay two videos with FFmpeg. I have video A(duration = 10s) with audio and video B(duration 20s) without. Video repeats two times and stuck but audio still playing. How do I trim ...
0
votes
0answers
33 views

How to run a ffmpeg code on a GPU?

we have written a short code in C code to read a video file, using common libraries as libavcodec, libavformat etc.. The code is running smoothly but only using the CPU resources. We'd need to run the ...
0
votes
0answers
9 views

How to install mencode with libmp3lame support on a mac?

On a mac (OS 10.13.6) I like to convert a video file with mencoder as follows: mencoder input.mkv -sub subtitle.srt -o output.avi -oac mp3lame -ovc x264 However, I get the error message: MEncoder 1....
0
votes
1answer
43 views

FFMPEG - Make a watermark in random position

I'm trying to implement the following loop: Place logo.png in a random (x ,y) position of the video. Make the logo fade out after 2 secods. Wait 30 seconds and repeat. After research in google I ...
0
votes
0answers
24 views

ffmpeg failed to find a suitable output format

I am using javascript to create a video file from several video files. I have an array in which I store my source video file and then use the following command and try to generate a single video: ...
1
vote
0answers
17 views

Create thumbnail images at some interval from a video without reading whole video [FFMPEG]

Short Problem: I want to take some screenshots image from a video url at some specific times but I don't want to read the whole video. Let's say I have a video stored in some url (like https://www....
0
votes
2answers
41 views

Fraunhofer FDK AAC in FFmpeg

The FFmpeg AAC guide says, Fraunhofer FDK AAC codec library is currently the highest-quality AAC encoder available with ffmpeg. Pre-built ffmpeg does not support it. This can be resolved by ...
0
votes
0answers
17 views

video audio automatically fades out at end when exported from ffmpeg

I have a problem whereby ffmpeg is reducing the audio to zero at the end of video files. If I produce a sine wave in ffmpeg using: ffmpeg -f lavfi -i "sine=frequency=1000:duration=5" -ac 2 output....
0
votes
0answers
20 views

Install ffmpeg from source, missing libs

I'm trying to install ffmpeg from source using this guide https://trac.ffmpeg.org/wiki/CompilationGuide/Centos. Getting error in configure ERROR: freetype2 not found manually in command line: $pkg-...
1
vote
1answer
31 views

FFMPEG Image Zoom to a Position X Y

I need to zoom to a special point of an image. What do i have to change in this existing Script for example Y:81% X:27%? ffmpeg -r 25 -i image.jpg -vf "zoompan=z='zoom+0.001':x='if(gte(zoom,1.5),x,...
-1
votes
0answers
10 views

MPEGTS Metadata remove

ffmpeg version N-90054-g474194a8d0 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.2.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-...
1
vote
1answer
22 views

Scale images into a square with ffmpeg: EXIF orientation lost

I'd like to use this command to scale, pad and rotate several jpeg images into a common 1000x1000 output resolution: ffmpeg -i image.jpg -vf "scale=1000:1000:force_original_aspect_ratio=decrease, pad=...
0
votes
1answer
21 views

Encode video like the specifications

I want encode my video like youtube did that, youtube encode, have below specification: General Complete name : C:\Users\USER\Downloads\Video\Conor McGregor- Khabib Nurmagomedov Fears ...
0
votes
1answer
42 views

How should I record multichannel (quad) with ffmpeg?

I recently got a four-channel USB input device (Behringer UMC404HD). The device is working and Linux sees it; I know this because I can record four independent channels using Audacity. However, I can'...

15 30 50 per page