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Questions tagged [ffmpeg]

a free software package including libraries and programs for handling multimedia data.

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26 views

ffmpeg for h264 encoding on raspberry pi2

I'm working on my Rasperry pi 2B, with Raspbian 2019-04 and I have compiled ffmpeg as described here: https://www.reddit.com/r/raspberry_pi/comments/5677qw/...
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31 views

Audio/Video drift when streaming to Twitch using FFMpeg

I'm trying to build a Twitch streaming box to stream from an input device. Link to the project is: https://github.com/jimbobbennett/RaspberryPiTwitchStreamer My setup is: Raspberry Pi Model 3B+ ...
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0answers
21 views

How to merge the audio stream incoming from other system

The ffmpeg is running on my RPi 3B, currently. My RPi has USB H.264 CAM and USB audio converter and is sending live stream to YouTube with rtmp. Some case, audio source is coming about 150m far from ...
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1answer
42 views

FFMPEG Raspivid Videos are shorter than they are supposed to be

I am recording and piping my video with the following command : raspivid -w 1920 -h 1080 -fps 25 -b 7000000 -o - -t 0 | ffmpeg -re -f h264 -framerate 25 -i - -vcodec copy -y -r 25 -strict ...
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31 views

SIP video call Performance issue

I'm facing performance issue during video call made between RaspberryPI3 and Laptop, the video image from RaspberryPI3 are not running smooth and the overall CPU usage consumes more than 80%. Here ...
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0answers
36 views

Cross-compiling for Raspberry Pi 0/1

I am trying to cross compile FFmpeg for a Raspberry Pi 0/1 running Raspbian Strech. I am following this guide on the official site but I have come to a standstill. Although I am trying to compile ...
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132 views

RPi Zero W (Jessie) ffmpeg illegal instruction

Trying to build and install ffmpeg with hardware encoder and rtsp streaming enabled. Attempted to follow instructions here: (https://github.com/KhaosT/homebridge-camera-ffmpeg/wiki/Raspberry-PI) but ...
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148 views

FFMPEG video rendering on raspberry pi 3b+

I'm currently planning on making a little GIF making machine. After a button press, the rPi records a 5 seconde video from a 720p USB camera. Then, the rPi should chroma key the video and then convert ...
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170 views

ffmpeg - Video Audio Capture with Compression

I am running ffmpeg script that captures webcam video and microphone audio and then uses video compression before saving the audio/video mp4 file. The script works on my desktop but cause error on my ...
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1answer
41 views

FFMpeg doesn't have tools/zmqsend

We are trying to use zmqsend (it's part of the ffmpeg repository) to communicate with a ffmpeg instance. On Raspbian, ffmpeg is configured with --enable-libzmq, and libzmq-dev is installed, but ...
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124 views

How to record video from two cameras simultaneously?

I connected two PS3 Eye cameras to my raspberry pi. Separately, cameras work fine. I can record the video in any supported resolution and frame rate. Unfortunately when I tried to record video from ...
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1answer
642 views

How to increase usb webcam fps?

To record video from my USB webcam I use ffmpeg with v4l2 driver (command below). ffmpeg -f v4l2 -r 30 -s 640x480 -an -sn -i /dev/video0 -f avi temp Unfortunately fps is too low for 640x480 (around ...
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81 views

raspicam TCP video streaming over ssh - almost there… but need help

I am trying to pipe raspivid over ssh to my main computer, and then via gstreamer send the stream to a dummy video device (thanks to V4l2loopback) environment : v4l2loopback version: 0.12.0 kernel ...
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0answers
30 views

Record video and audio from framebuffer

I'm trying to record in a video the actual content of the framebuffer along the audio currently outputted (alsa). For the video I'm using the following command: ffmpeg -y -f fbdev -i /dev/fb0 -vsync -...
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86 views

Getting low FPS while using x11grab ffmpeg

Question : Why I am getting ~7 FPS even I have specified 30 ? I am using raspberry pi 3 and compiled latest soruce code from the GIT and still getting low fps(~7) while using below ffmpeg command ...
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0answers
168 views

Low video quality with h264_omx encoder

I have a Logitech C922 webcam and I'm recording using ffmpeg with this settings: ffmpeg -thread_queue_size 1024 -f alsa -r 16000 -i hw:1,0 -f video4linux2 -thread_queue_size 512 -s 1920x1080 -i /dev/...
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1answer
299 views

Raspberry Pi Zero hardware based video encoding

I'm trying to build a dashcam with a Raspberry Pi Zero with an official Raspberry Pi Camera (version 2) in an official Raspberry Pi Zero case mounted with a old GPS device cradle. I installed motion ...
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1answer
146 views

Retroactive audio recording/continuously record audio, save last X minutes on command?

I'm trying to set up my Raspberry Pi to continuously record the last X minutes of audio until given the command to save it to a file. The only comparison I can make is an NVIDIA Shadowplay for audio. ...
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1answer
1k views

Pi3 B+ FFMPEG encode x265 very slow

I just bought a RPI3 B+ with the hopes of using it as a media encoding box. I built ffmpeg, and use the following to transcode media from h264 to h265 ffmpeg -i "$i" -c:v libx265 -crf 28 -c:a aac -b:...
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2answers
2k views

Installing MPV with FFmpeg + MMAL: Could not create EGL surface!

I would like to build mpv from source for the raspberry pi. This is turning out to be quite difficult. Error pi@raspberrypi:~ $ ./mpv-build/mpv/build/mpv --hwdec=mmal --vo=rpi --log-file=~/mpv.log ...
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1answer
355 views

MPV with MMAL does not open application window

I've built mpv on the raspberry pi 3b+ (stretch-2018-06-27) using the following procedure from: No OpenGL hardware rendering using mpv Quick & Easy: Hardware Accelerated MPV on Raspberry Pi 1/2/3 ...
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0answers
115 views

Audioinjector streaming over RTP input errors: “hw:0,0: Protocol not found”, “Unknown input format: 'alsa'”

Using a RPI 3B running Debian Jessie, I've been trying to get a simple stream of the "flatmax" audioinjector's onboard mic over RTP to a VLC player. I've tried many different commands such as: ...
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1answer
261 views

mpv error - could not get dispmanx

I've tried to install mpv for raspberry pi using mpv-build (with maal, 256 graphics mem) because I would like to modify the code. it seemed like it was finally a success until I tried to run ...
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0answers
64 views

What is ffmpeg “rpt1” version?

When I run apt-cache show ffmpeg, there are two versions available. One of them has "rpt1" on the end of the version number. I can't find any info about this; what is the difference between the two? ...
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0answers
613 views

Broadcasting a local RTSP video stream with a Pi 3

I would like to use an RPi 3 to broadcast a local RTSP stream from a wireless cam to YouTube Live. OBS accomplishes this on my Macbook but OBS doesn't appear to work on the Pi and the solutions I've ...
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0answers
722 views

Streaming RTSP feed over DLNA

I have a 'smart' TV that has a very limited set of functions, one of them being it can stream videos from any DLNA server on the LAN. I have an RTSP stream on the network that I would like to view on ...
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0answers
669 views

Streaming audio on the Raspberry Pi Zero W with ffmpeg

I have a problem with ffmpeg giving no audio when recording using alsa. Does anyone know how to get a Raspberry Pi Zero W to record and stream audio with ffmpeg using alsa? I have a project where I ...
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0answers
1k views

How to stream low latency camera feed to RTMP server

Are there any optimizations or recommended techniques for streaming a camera feed from a raspberry pi to an RTMP server. Currently I get a 1-2 second lag when I run: raspivid -n -t 0 -w 1280 -h 720 -...
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1answer
330 views

Straming Raspberry camera to own Apache Server - Command not found

I am planning to implement a camera video stream from the Raspberry Pi to its own Apache server. I trying to solve this for a week now and i am pretty frustrated by now. I came across this tutorial ...
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1answer
196 views

AVFrame YUV420P to dispmanx VC_IMAGE_YUV420

I'm using ffmpeg for decoding a video with h264_mmal encoder. And all test videos are in YUV420P color encoding. Also I'm using dispmanx for drawing frames from a video. Only problem which I have is ...
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1answer
512 views

Problems using bcm2835_v4l2 module w/ ffmpeg

I've run into some problems using the native bcm2835_v4l2 module on my Raspberry Pi Zero W (running Raspbian Stretch). The module is loaded and the associated video device is visible: $ v4l2-ctl --...
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1answer
3k views

Create a RTSP stream using motion and a USB webcam

I've just set up a fresh RaspberryPi (Zero W) and started installing motion, in order to receive a livestream of my (old) USB webcam (Microsoft LiveCam HD-3000). I know this is a pretty old one but ...
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1answer
1k views

Problem with every even photo using USB camera

I use Raspberry Pi 3 with Linux RaspberryPi 4.9.59-v7+ onboard together with Logitech HD Webcam C270. It works quite well, I am able to preview video stream in Qt V4l2 Test Utility, take a photo with ...
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1answer
987 views

ffmpeg performance degrades over time

I am using a Pi Zero W with the Pi camera (noir) to stream live to Youtube using ffmpeg. The command line I am using is: raspivid -o - -t 0 -h 720 -w 1296 -fps 24 -b 6000000 | ./ffmpeg -ar 44100 -ac ...
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0answers
572 views

ffmpeg slideshow on raspberry pi raspbian

I'm trying to make a slideshow video from few (in this case 3) .jpgs. To do this, I'm using ffmpeg -r 1/5 -i bat%03d.jpg -c:v libx264 -r 30 -pix_fmt yuv420p proba12.mp4 and actually it works on ...
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1answer
108 views

Can armhf compiled software run on armel os?

I am setting up my media server on my raspberry pi 3 (armv7) using docker. I downloaded a image of a media server and installed it, the problem is that image uses Opensuse and if I run dpkg --print-...
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1answer
2k views

avconv for converting mkv to mp4

I would like to convert a video file from mkv to mp4. Usually (Debian 9, main laptop), I do: $ ffmpeg -i input.mkv -c:v libx264 output.mp4 On the other hand, on raspbian ffmpeg is replaced with ...
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0answers
211 views

audio video out of sync / framerate issue?

I am trying to sync the raspberry pi camera (revision 1.3) to an external microphone. The sync is fine for the first 5 minutes or so, but around the 20 minute mark, the difference becomes really ...
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2answers
755 views

Using ffmpeg to capture whatever is being globally sent to video output (ie: hdmi output)

I have setup a RTSP monitor with a Raspberry Pi 3, using this tutorial: https://community.ubnt.com/t5/UniFi-Video/Tutorial-RTSP-Raspberry-Pi-B-Viewer-6-Cam-4-Cam/td-p/1536448 TLDR: it uses the ...
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1answer
223 views

“avplay audio.wav” generates error: “Could not initialize SDL - Unable to open a console terminal”

When I try to play an audio file using avplay on a raspberry pi3 running raspbian jessie, I get the following error. pi@raspberrypi:~/sounds $ /usr/bin/avplay clip1.wav avplay version 11.9-6:11.9-1~...
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1answer
2k views

How do I set up live Twitch streaming from RetroArch on a Pi 3?

I have been tinkering with Raspberry Pi's for a few years now and have some experience with installs, command line and using SSH e.t.c... I currently have Pi 3 with Retropie 1.6.3 installed and I can ...
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1answer
4k views

FFMPEG: Unknown input format: 'alsa'

I have a Raspberry Pi 3 and I keep trying to install FFMPEG, but whenever I try to record audio through my USB webcam's mic with sudo ffmpeg -f alsa -i hw:1 -t 30 out.wav I get the following error: ...
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1answer
541 views

Tons of Bluetooth: hci0: Frame reassembly failed (-84) messages

Sorry in advance if the explanation is too general, I can attach code if needed... I'm working on a project where a python program is running in a device, and a Bluetooth socket is opened and ...
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0answers
2k views

OpenCV VideoWriter and Hardware h264

I'm working on a python/pygame application, and i'm facing some difficulties when I try to capture a video from a usb camera (640x480) to a h264 encoded file, through OpenCV. Everything work fine with ...
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1answer
4k views

RPI-3: Performance issue on FFmpeg with mmal support

Issue: FFMPEG GPU/Hardware acceleration is not enabled on RPI. FFPlay is jittery, patchy and takes close to 100% CPU. Description: The video streaming of mpeg4 files is very slow (the video streaming ...
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1answer
405 views

How Can I Stream Video from SD Card over Ethernet via RTSP?

Problem: I need to stream a video file from my RPi SD card over RTSP to display on a client computer. I'm new to RPi and Linux-based interfaces. I'm also new to RTSP and video streaming. My hardware:...
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2answers
3k views

ffmpeg video file with v4l2 driver

I want to save a video file from the raspberry camera, by using the v4l2 driver and ffmpeg. v4l2-ctl is able to capture the video, though ffmpeg is not. When i run the command: ffmpeg -f video4linux2 -...
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1answer
2k views

HD-SDI video out from Pi3?

Is it possible to get HD-SDI video directly out from a Raspberry Pi (via breakout board or something)? I have seen an Arduino SDI camera controller, but I am looking for video out. I have also found ...
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1answer
2k views

How to add audio as an input for ffmpeg capturing?

I've been lurking for a while now and I finally created an account because I'm stuck on this particular problem. I've got a raspberry pi 3 with a camera attached to it. I'm able to capture video as an ...
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2answers
474 views

Is there a linux distribution with prebuilt ffmpeg & alsa

I'm working on a camcorder example where I need ffmpeg & alsa. Before I actually bake an os for this, just looking around if there is a Distribution that gives ffmpeg & alsa preinstalled. ...