Questions tagged [video]

Questions related to playing or editing video on the Raspberry Pi, both in SD and HD.

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2k views

Software adjustment of gamma/brightness settings in Raspbian

I am trying to find a way to control the apparent brightness of my external screen on Raspbian Stretch. In my situation, there is no need to actually control the backlight, as I only want to change ...
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1answer
28 views

Does Pi4 output correct video for Apple CInema Displays?

I've seen the older thread asking about a pi 2 on a cinema display, but the responses weren't helpful. I have an old Apple Cinema display that does work - had an ancient mac up and running, but that ...
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1answer
74 views

WARN:0 global /tmp/pip-wheel-2c57.../opencv/.../cap_v4l.cpp (890) open VIDEOIO(V4L2:/dev/video0): can't open camera by index

When switching from the legacy camera stack under Raspberry Pi OS with debian 10 to the new libcamera camera stack (in Raspberry Pi OS with debian 11 it is standard), I cannot use OpenCV any longer. ...
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1answer
507 views

Can I record HD 1080 p 60 fps through USB on a Raspberry Pi 3 or 4?

I have a set-top box with HDMI output and want to record some programs from it on a Raspberry Pi (model 3 or 4). I found some HDMI to USB 3.0 converters with HDMI 'loop-out' which would enable us to ...
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1answer
1k views

Video encoding for web streaming with Raspberry Pi

I have a Sony Camcorder HXR-NX5E that I want to use for web streaming on Youtube, Facebook, etc. I would like to know if there is a way to use Raspberry Pi as a video encoder open source to stream ...
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1answer
23 views

Boots correctly but says "No HDMI signal" after finishing kernel boot logs

I have a Raspberry Pi 4 Model B (8GB), I have flashed the latest version of Raspbian into a USB flash drive and I boot it from there. I've had no problems so far. Today I restarted it after about 2-3 ...
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1answer
411 views

Text overlay over video stream when saving to file system

I'am using raspberry pi zero as controller which communicate over UART with external board with five sensors. What I need is a way to save video stream from raspicam to filesystem with embedded text (...
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1answer
470 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
75 views

Why this command works correctly in command line but doesn't in autostart file?

This command works in command line but doesn't in autostart: raspivid -t 10000 --segment 2000 --output video_%d.h264
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0answers
16 views

H264 video input with streaming and recording

I want to connect a camera which outputs raw H264 via USB to an RPi4, I want to stream the video to a remote PC (Win10). I was advised that using H264 input would reduce the conversion overhead on the ...
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2answers
910 views

2560x1080 how many Hz?

Periodically I’m tempted by the ultra wide monitors on the market. If I buy one, it’ll be the 29” LG but my question is can the new pi 3b+ do 60 Hz at 2560x1080?
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1answer
152 views

Running videos on JavaFX in Raspberry Pi Zero

I am trying to run a program which shows a simple video through mediaView and then shows a QR code that is associated with a string that the program generates on javaFX in a Raspberry Pi Zero. I have ...
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1answer
287 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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0answers
23 views

pause raspberry pi 4 taking input from MFRC522 while the video is playing

The cards have video file names written to them. When a card is placed on the MFRC522 sensor, the video is played. Now, I am unable to figure out how to stop or pause the raspberry PI from taking the ...
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1answer
912 views

USB cam with raspberry pi 3: achieving maximum FPS

I am using a ub camera with raspberry pi. When I run v4l2-ctl --list-formats-xext, I get the max FPS is 15 with resolution of 2592x1944. However when I run ffmpeg -t 5 -f v4l2 -framerate 15 -...
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1answer
2k views

Problem recording video with audio from usb soundcard using avconv

What I'm trying to accomplish in this program is that when video and sound is captured, the output file is .mp4 extension (or some other, like .ogv), with video and sound. I know how to capture video ...
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1answer
52 views

Add a wIfi antenna on a Rapsberry Pi deployed underwater [closed]

I have Raspberry Pi in a pressure case that is deployed on the ocean floor and is collecting video. I would like to be able to communicate with the Pi from the surface without having to retrieve the ...
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0answers
21 views

Wifi/Bluetooth camera with Raspberry pi

I made a drone with Raspberry pi using Wifi module. I have a broken android phone, I want to add it's camera in the drone. How to do it ?
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0answers
9 views

MPEG-2/VC-1 Software Transcode vs Hard+Soft Decode+Encode

Is it better to directly transcode MPEG-2 (or VC-1) video into a different format (let's say h.264 as an example target) with the CPU, or is it faster to use hardware decoding (license purchase ...
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0answers
38 views

Raspberry Pi4: Remote control OMXplayer app

I want to control omxplayer video player via simple commands (fwd, back, pause, play, Stop) I send over the network to the Raspberry Pi. Having previously tried and failed to use the stdin and stdout ...
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1answer
2k views

Capture AV/HDMI and stream over the network? (+IR extender too, maybe?)

Is it possible to have the Pi take-in/capture footage then stream that footage over the network? Could I also attach an IR receiver to one Pi, and have it repeat from an IR receiver on another Pi? ...
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2answers
4k views

UV4L audio + video recording or stream?

I have experimented with a number of different ways of streaming both audio and video from the raspberry pi. The UV4L web server has great webRTC support, and the bi-directional audio/video ...
2
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2answers
3k views

Can I set the camera's shutter speed for video?

I need to have a low shutter speed to be able to capture a light that is only on for a few milliseconds each frame (light synced with camera fps, but only want it to capture when the light is on). How ...
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1answer
2k views

Ultra-wide monitor support - Screen resolution, Video and Audio Raspberry Pi 4 B

Ultra-wide monitor specs: 34 inch WHFD (2560 x 1080) IPS Display (21:9) - HD 10 AMD Free sync OS: Arch linux with Openbox (lightdm) Issues: Managed to get 2560x1080 pixels with "...
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0answers
32 views

How to run Britbox on Raspberry Pi 4?

I was wondering how can I watch Britbox https://www.britbox.co.uk/ on a Raspberry Pi 4? Currently, the video output is not running in chromium. I have tried increasing the gpu to 256 and this had no ...
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0answers
322 views

Raspberry Pi 3b+ Fake KMS not listed

I've been trying to follow tutorials on enabling hardware accelerated video decoding for my Raspberry Pi 3b+, such as this one: https://lemariva.com/blog/2020/08/raspberry-pi-4-video-acceleration-...
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1answer
336 views

Send GPIO trigger(s) at specific video timecode(s)?

Just starting out in the wonderful world of RPi maker projects, scored a Model 2b v.1.1, installed the latest Raspbian and now ready for my first project :-) What I want to build is a video player for ...
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3answers
41k views

How to stream low-latency video from the RPi to a web browser in realtime

I took me a while of hunting, but I managed to get low-latency real-time video streaming working on my RPi2. I'm running this on my RPi2: raspivid -t 999999 -h 720 -w 1280 -fps 25 -b 2000000 -vf -o -...
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1answer
2k views

Need advice on how to record video and audio using my RasPi

As an experiment and learning project, I want to create an action cam using my RasPi Zero W, the latest version of the RasPi camera module and an i2S microphone. I have found some RasPi action cam ...
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1answer
3k views

Raspberry Pi B, wont play mp4 videos. Latest Rasbpian Stretch

I'm trying to play mp4 video on vlc player, but it only shows progress and no video is playing. Also, tried with omxplayer, it just says, Have a nice day ;) and nothing happens. I was looking for the ...
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1answer
58 views

Micro pc to control scenography, shutdown

In a quite complicated theater-like scene I need to project a movie on a monitor. The movie must be played when a sensor is engaged (no, I can't use an IR remote control). I was thinking about using ...
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2answers
6k views

Streaming from RPI over VLC

I realize this is a very commonly asked question but I haven't found anyone who's run into quite the problem that I'm running into. On my PI I run the following command: raspivid -o - -t 99999 -w 640 ...
5
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2answers
29k views

How am I supposed to set GPU memory in RPi4?

I am using RPi4 for a while and I found some problem playing videos on VLC and you-tube. After searching a long time I found that these problems can be solved by increasing GPU Memory. I found that ...
2
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1answer
1k 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
3k views

OMXPlayer Audio Out of Sync with Video

I have a RPi and I'm trying to play a full 1080p HD video @ 60fps. The audio is a few seconds ahead of the video. Is there any way to get the video to maybe drop frames? And I'm using a 256MB model, ...
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1answer
221 views

Start pi_video_looper from Python

I am new to Python so please be kind ;) I am trying to start the Adafruit Video Looper from a python script. Basically I have this code: from pi_video_looper.Adafruit_Video_Looper.video_looper ...
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2answers
65 views

What is the bottleneck when I'm downloading something and playing a video?

When I'm downloading a file (torrent) and playing a video, my video will periodically freeze. The video uses the GPU and barely the CPU, the total CPU usage isn't anywhere near 50% when I'm doing ...
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1answer
166 views

Can "normal" app change resolution/refresh on the fly

I want to write a Pi app to test the ability of American HDTVs to display 720p50, 1080i50, 1080p50, and other assorted modes, like the 59.94 & 60fps variants of 720p60 and 1080p60 via HDMI. Few/no ...
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0answers
36 views

U4VL WebRTC hardware codec error

I installed U4VL with all the necessary libraries for WebRTC. But the webcam isn't working with hardware codec enabled, I am using the Camera Board V2. I got the following error: In the uv4l-rapicam....
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0answers
30 views

Recoding video files for easy (low CPU) playback on Pi4 / Firefox

I won't go into the full detail of how we arrived here but I have a need to play two (locally stored on the eMMC) video files simultaneously in Firefox running on a Pi CM4. Right now it's struggling ...
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1answer
570 views

How can I play a .mkv video with subtitles on the raspberry pi 3b?

How can I play a .mkv video with subtitles on the raspberry pi 3b? using osmc or anything else. Also Can I add or use external fonts? I am new to this section so excuse me.
6
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1answer
7k views

RPI 4 - ffmpeg - how to get hardware h.264 decoding to work?

I have had good success on the RPi 3 using ffmpeg to decode h.264 streams from various Ethernet video sources. However, on the RPi 4, when I include the -c:v h264_mmal directive, it appears to ...
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0answers
12 views

Force video output to part of a monitor

I have a FHD monitor with a smashed screen on the left side only. Is it possible to force the PI to output video to only part of the screen? For example, output 1500 x 1080, and align to the right ...
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2answers
3k 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
1k views

Play movies found on USB stick on boot

I'd like to connect a RPi2 to an old TV (via composite) and use it as media player. With a plugged USB stick containing movies (avi files, DivX or other formats, etc.), I would like the RPi to auto-...
6
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3answers
32k views

The Composite Video on my Raspberry Pi isn't working

I run the commands /opt/vc/bin/tvservice -o<br> /opt/vc/bin/tvservice -c "PAL 4:3" and the screen changes from the default "no signal" screen to a black screen. This shows me that the ...
6
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2answers
36k views

How to stream video via socket using OpenCV and picamera

I'm relative new with Raspberry and I'm trying to stream a video to a PC using OpenCV libraries. I already made connection using the camera documentation but I don't know send the frames using OpenCV. ...
2
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1answer
16k views

How to grab video using easycap chipset utv007 on Raspberry pi 3 Model B

I want to grab video using easy cap on my raspberry pi 3. I followed the link http://raspberry-at-home.com/video-grabber-for-raspberry-pi/, but I am getting only green screen. root@raspberrypi:~ $ ...
2
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1answer
6k views

Raspberry pi 4 - Framerate drop with video on chromium browser

I have a problem using chromium-browser in kiosk mode on a raspberry pi 4. I launch a web interface in Html with my video on it. Sometimes there is some drop frame / lag on the video, and I don't know ...
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1answer
68 views

Omxplayer not always starting with rc.local

I have trouble with my Raspberry Pi 4B configuration. I prepared RPI to work with TV - it turns on the TV and switches active source to HDMI1 with cec-client. After turning on the TV it should start ...

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