mplayer build with address sanitizer (asan)

I am trying to build mplayer using clang with the address sanitizer flag. However, I keeps getting errors when I execute make. Here is the full output log including the commands I used. Any help...

debian ffmpeg webcam streaming to remote server error

I have a beaglebone black that I am trying to stream live video from, to an OSX computer. The streaming client potion seems to work if I point it to a local ffserver. [email protected]:~# ffmpeg -f...

ffmpeg concat: "Unsafe file name"

Trying to convert a bunch of mts-files into a big mp4-file: [email protected]:/mnt/backupsystem/archive2/Videos/20151222/PRIVATE/AVCHD/BDMV$ ~/bin/ffmpeg-git-20160817-64bit-static/ffmpeg -v...

Compile OpenCV with Cmake to integrate it within a Conda env

I am trying to follow these instructions inspired from here to compile OpenCV so that it gets integrated within a Conda environment that I previously set. However, when I import cv2 within this...

How to compile a c++ application using static opencv libraries within docker

I'm building my first OpenCV based application in C++. My goal is to build an intermediate docker image that can compile the application statically so that it can run standalone in the resulting...

error: opus in MP4 support is experimental, add '-strict -2' if you want to use it

I am trying to convert some MKV to MP4 with ffmpeg, and I keep getting the error below. Any thoughts? I have installed ffmpeg and installed: sudo apt install -y libopus-dev libmp3lame-dev...

FFmpeg error: Unable to find a suitable output format for ''

I'm new to ffmpeg as well as Android programming. I'm trying to load a video from a URL and crop it with ffmpeg. I want to save that video to a file. This is the command I found online: "-i " +...

How to solve issue with ffmpeg being stuck at 'Opening an input file'

I am using a capture card to capture HDMI audio from another machine. On my host, output of arecord -l is as follow: **** List of CAPTURE Hardware Devices **** Home directory not accessible:...

Regular expression to parse ffmpeg info

Here is my code: Input #0, mpegts, from 'tcp://127.0.0.1:3456': Duration: N/A, start: 1809.522000, bitrate: N/A Program 256 Metadata: service_name : AIR_CH_521_6M ...

ffmpeg flip horizontally webcam to virtual video camera

I need to horizontally flip my webcam image for a meeting. I tried the instructions in this site https://wiki.archlinux.org/index.php/Webcam_setup#Applications</Webcam setup> which uses v4l2 and...

FFmpeg ignoring output pixel format

I am using ffmpeg 4.2.2 on an Ubuntu 20.04 machine to clone the video stream of a USB webcam so that multiple applications can use the same feed. To achieve this, I simply clone to a v4l2 loop...

FFmpeg v4l2 copying unstable

Prelude I am using ffmpeg 4.2.2 on an Ubuntu 20.04 machine to clone the feed of a USB webcam (v4l2 device as /dev/video0) so that multiple applications may access the feed. I used this ffmpeg...

improve video size ffmpeg webcam stream

I am trying to use a webcam Logitech Quickcam 9000 to do IRL stream from a Raspberry 3 using Raspberry Pi OS current version, I have FFmpeg installed and no matter what I try the video resolution...

Build a C ++ project in statics using OpenCV static libraries

I am trying to build a simple C ++ project (just declare an object of type cv :: Mat in main.cpp) in statics. Nothing comes out. I tried all the methods described on the Internet in my opinion - a...

H.264 video file size from camera is much bigger than x264 output

I have a UVC camera which supports h264 protocol. we can see the h264 listed below when we list all formats supported. msm8909:/data # ./ffmpeg -f v4l2 -list_formats all -i /dev/video1 ffmpeg...

ffmpeg command execution never stops

I am trying to concatenate 3 videos of different resolutions and overlaying 2 videos as transition effects(though the chroma key color removal is not yet implemented) between videos using below...

FFMpeg - Overlay not being shown when enable=between parameter is added

I am using below command to add transitions effect between videos using overlays such that when one videos is about to finish, the overlay gets visible. Before showing overlays, I have to add...

How to Forward MJPG Webcam to Virtual Video Device using FFmpeg?

I have a webcam that looks like this: $ ffmpeg -f v4l2 -list_formats all -i /dev/video0 [video4linux2,v4l2 @ 0x55fe6d48a240] Compressed: mjpeg : Motion-JPEG : 1920x1080 1280x720...

OpenCV Docker multistage build - cannot install prebuilt source

I'm trying to build a Docker image including a very particular configuration of OpenCV with CUDA and GPU support. The build succeeds, and if I make install it from the same context that built the...

How to use FFMPEG on Python/Windows10 with Pipe for Screen recording?

I'd like to record the screen with ffmpeg as it seems to be the only player out there who can record a region of the screen along with the mouse cursor. The following code was adapted from...

How do I deal with an internal compiler error (cc1plus: gimplify) when installing c based python libraries (OpenCV2) on a Raspberry PI?

I've been trying to install the OpenCV2 libraries for Python 3 on my Raspberry PI 3B. I started this process by installing Python 3 through apt and using pip3 to install OpenCV. However the...

ffmpeg: kmsgrab to v4l2 loopback device

I've been trying to pipe my screen into a v4l2 loopback device (as a hack to share screen during calls on wayland). This is what I tried so far: $ sudo modprobe vl42loopback $ sudo ffmpeg -device...

Using ffmpeg to livestream webcam video over UDP from Pocketbeagle running linux, what is missing?

I've been reading up on a lot of questions pertaining to ffmpeg and streaming a live feed from a webcam, and have gotten pretty close but I am just missing something small. I have a Pocketbeagle...

ffmpeg: chroma key (greenscreen filter) a short video continuosly loopling into a live video

I know how to chroma key / greenscreen filter a background of a video stream and replace it by an image using v4l2loopback. After running $ sudo modprobe v4l2loopback my code is as follows: $...

FFMPEG on Windows Server "Unknown encoder 'libfaac'"

I am doing this on a Windows server and is not already answered as per the other question on here on a Linux server. Im using FFMPEG on a project handling video uploads and I keep getting an issue...

FFMPEG-PHP Error "Sample rate index in program config element does not match the sample rate index configured by the container."

Am using FFMPEG installed on a Windows server. I have a PHP webpage that uploads and trims videos using FFMPEG, when I upload MP4's with AAC audio, especially videos over 100mb, I get the...

How can I capture simple video input with audio from a capture device

I'm using ffmpeg on Arch linux and trying to convert some old video to digital. The setup is pretty straightforward and if I connect to the capture device with VLC I get the video and audio just...

Flutter FFMPEG: Error setting profile baseline

Flutter-ffmpeg unable to set profile parameter. (I need to use profile so the rendered video can be played on WhatsApp). I am converting.bmp images into a mp4 video. Other I have tested other...

Why can't I duplicate an MJPEG stream from a webcam to a V4L2 Loopback Device on Linux?

I'm trying to duplicate a USB webcam device V4L2 stream (/dev/video0) to a V4L2 Loopback Device (/dev/video99) at the highest resolution and framerate possible with the hardware available on a...

Overlay Image Over a transparent gif using FFMPEG

I am trying to overlay a png over a transparent gif using FFMPEG. The problem is the command is running flawlessly but the output file in converting transparent pixels into black or white. I am...