Questions tagged [video-capture]

the process of capturing a video signal with a computer, using a capture device (PCI-E, USB, Thunderbolt)

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1answer
91 views

Benefits of component/RGB connector (vs. S-video or composite) for VHS capture?

I know it's 2020 but I still have a few VHS tapes to digitise. I do not expect the picture quality to be necessarily good enough to worry about this question. Still, I would hate to lose any tiny ...
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1answer
861 views

Capture a wpf window : The flickering issue

I made a simple animation (as crawl text) using C#-WPF. The animation is smooth and excellent. (in wpf window) But when I capture it by FFmpeg as video it has flickering problem. Please see sample1 ...
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3answers
26 views

using canon 5D markiii or Olympus OMD EM5 as computer video camera?

I tried the EOS utility and cam link USBs but nothing works for the two cameras that I own---canon 5D mark iii or Olympus OMD EM5. I understand that they are pretty old models. I was wondering if ...
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56 views

Using ffmpeg to change value of pixels (pixels close to white, make pure white and pixels close to black, make pure black)

I have a segment of a video captured from a Nintendo 64 that looks like this for a couple of seconds: and because of my capturing setup there is slight ghosting around the black text (and some other ...
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1answer
12 views

MKV file corrupted

I use the movavi screen recorder 10 program for screen recording. However, today, when I finished recording a video, the program stopped responding and I had to close it forcibly. Conclusion: the ...
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3answers
76 views

Syncing Audio and Video

I have am doing a video recording podcast. I am recording the audio with Audacity with my 4 Shure mics hooked up into my Clarett 4pre USB. I am recording the video with OBS Studio a Cannon Vixia GF ...
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23 views

Transcoded video become shorter (playback length) and plays at double speed

Currently I am doing a project where I am recording live video (720p25) with a video capture card (stretch card). This live video feed is recorded into a 3rd party proprietary video recording software....
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16 views

8mm film digital transfer via flatbed scanner

I've recently successfully scanned a large number of Kodachrome slides via an Epson v550 flatbed photo scanner. My next digitization project is a small collection of family 8mm film reels. Doing some ...
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16 views

How to grab multiple image from a live stream:

Questions: On the links below you can see a live stream from the Danish Great Belt Bridge: Streaming from Danish Great Belt Bridge Pylon Streaming from Danish Great Belt Bridge from landside How to ...
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2answers
358 views

Can't capture video from dshow device. FFmpeg finish immediately resulting empty file

I'm digitizing my old tape recordings from usb dongle. Everything been ok, I digitized several tapes, but I'm abandoned this project for a while and reinstalled windows. Keeping on secondary drive the ...
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2answers
53 views

How do I import minidv video to windows?

I've connected my camcorder to the pc via firewall,driver was also installed but when I plug in and out nothing happen. (Except the sound). Do i need any software?
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2answers
40 views

Record for an hour using mobile phone

I want to record someone speaking for about an hour without any gaps. To do this i'm using a Samsung Galaxy s8. The default video application splits the video into 4gb files when recording longer ...
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1answer
741 views

FFmpeg Can't Capture Window Rendered with Secondary GPU

Edit: I am using the terms "primary" & "secondary" cards below loosely. I'm just assuming the Intel card is considered the first card. I recently discovered how to use my secondary graphics card (...
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1answer
26 views

video not showing full screen

I have video from multi videos, when I import it in after effect, one of them not showing full screen. I think when see image will understand my problem in video player: in after effect after ...
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1answer
38 views

Is the RCA camcorder output analog?

Bear with me because I am very new to this topic. I saw a setup where someone was recording using two cameras and sending the output to a laptop. The camera output was sent via a three pin cable which ...
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2answers
260 views

Capturing VHS tapes

I bought a Video-2-PC DIY Video Capture Kit which includes a copy of ArcSoft Showbiz 3.5, which I found to be too restrictive and low quality, and VirtualDub 1.9.11.0, which I eventually got to grips ...
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1answer
14 views

Seeking Boroscope capable of focal lengths from 24 to 48 inches

Most boroscopes (tiny mobile cameras) are designed for short focal lengths, like a few inches (think: drain pipe inspection). The boroscopes that claim long focal lengths cite up 16 inches. That's ...
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8 views

Camtasia - How to edit a 936px screen capture, so it will fit 1080P format?

I'm trying to create an explainer video for a website, and I capture with Camtasia the website while Chrome is open. I chose to capture only Chrome inner window, without the buttons or the windows ...
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1answer
719 views

ffmpeg: Why did my capture speed drop? (can no longer capture using same command)

I've been using the following command to capture video with ffmpeg for the past two months using my Blackmagic Intensity Pro 4K capture card: ffmpeg -bm_v210 1 -rtbufsize 1500M -threads 4 -f decklink ...
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1answer
187 views

If I screen-capture a snapshot from a HDR movie, will the snapshot image be a HDR image?

I have a HDR movie content playing on a HDR supported PC, using software like the VLC layer. If I take a snapshot to get a png image file, will the image file include the HDR information? That is, if ...
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2answers
6k views

How can I record adobe flash player stream

I am learning english and I want record this stream. It's using flash player and in addition include PDF doc. thanks for your interest
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1answer
204 views

Camtasia Studio video files are too big

I've been trying to export an HD video from a screen recording created with Camtasia studio, but every rendering is returning videos with 80 mb/s of bitrate, I'm setting it to 65% quality, MP4. If I ...
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2answers
414 views

Mounted Canon VIXIA HF G20 -

Church installation. We have the camcorder mounted 12' above the floor and I have to use a ladder to get to the camera to take out the SD card and then replace it after I have downloaded the video for ...
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1answer
373 views

AVI Capture in VirtualDub: MP3 Compression

I would like to capture my old VHS tapes to my HDD. I already was successful installing the xvid codec which gives me an acceptable video compression. But somehow I am not able to set audio ...
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1answer
183 views

resend headers NUT formats

If I do this ffmpeg -f dshow -video_size 720x480 -framerate 29.97 -i video="Roxio Video Capture USB":audio="Line (Roxio Video Capture USB)" -c:v mjpeg -c:a pcm_s16le -map 0:v -map 0:a -f fifo -...
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0answers
14 views

Is a video capture device with external coding useful for OBS?

I'm awfully new to this, so bear with me if this is a dumb question, but ... I'm in the market for a video capture device so I can use my DSLR for some live streaming video. In investigating external (...
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0answers
31 views

Compensate or fix VHS artefacts in areas of high contrast

Take a look at the man in a tuxedo. To the right of the black leg, there is a bright vertical line. Is there some kind of filter in something like VirtualDub or Vapoursynth which could improve this ...
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1answer
172 views

How to up scale video resolution for Video Card

I've a Black Magic Declink Mini Recorder Frame Grabber which supports minimum 720p as Video Input. But my camera has a VGA resolution which ostensibly will give output in 640*480 resolution. The card ...
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6 views

What is the best way to convert Hi8 tapes on macbook pro of 2013 using Big Sur?

I have several Hi8 tapes that I want to capture and convert with good quality of image. I am trying to avoid the line that appear at the bottom of the image. I have a Sony Z1U that can serve to pass ...
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34 views

Converting/filtering/deinterlacing VHS captures on Linux

I'm pretty much a novice video editor especially on Linux. I'm looking to take a bunch of old home videos I captured using ffmpeg and clean them up as painlessly/automatically as possible. At this ...
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2answers
1k views

Lossless Capture with FFmpeg

I’ve been attempting to do lossless game capture as I’ve been working on a program to do frame rate analysis. I haven’t had much luck finding a program that does lossless capture as AmaRecTV, Dxtory, ...
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27 views

Trim (remove frames from) live video from webcam

I have a webcam that captures video stream. After 30 seconds I want to remove 1 sec of the video from the start and keep capturing the video stream and so on. In short, I only want to save the latest ...
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21 views

How many I-frames are in a single shot?

I have some fundamental questions on shots and I-frames. When we apply shot detection on a video, how many I-frames will exist in a shot? How many frames exist between two I-frames? And does the shot ...
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1answer
22 views

How to make scenes look continuous?

So I shoot scenes with my cellphone (whether FHD or UHD). But other scenes I take them from clips I find online in a subscription service. If I try to make the video of contiguous scenes combining ...
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1answer
58 views

Is video output in YUY2 color space lossless if the input is sRGB?

I am considering purchasing one of these: https://static.cloner-alliance.com/manual/ca-1080fl_user_manual_v1.1.pdf It claims to be able to capture "uncompressed video", but in the list of ...
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0answers
11 views

Variable audio drift from screen captured VR project in Unity

I'm new to video editing, and I need to sync up the audio and video from two different sources for a Virtual Reality game. Basically, I have the VR itself running in Unity on one computer, with the ...
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1answer
50 views

How to split video output signal from 1 PC to 40 projectors?

I am thinking of implementing this by daisy-chaining multiple splitters but I am not sure if it will work. Does anyone know of a cost-effective solution to this? Thanks.
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2answers
40 views

Permanent metadata for videos

Is there any existing container (video format) in which the metadata is immutable? I am new to this topic and my use case is that once a video is recorded, I want to preserve the metadata (for ex ...
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0answers
22 views

Poor Capture Quality with Camtasia

I build video tutorials. I need to capture video in raw high-quality format so I can hand it to the editor. But, when I record video in Camtasia 2019 or 2020 (new version), the editor complains that ...
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1answer
105 views

Why does my VCR output a grayscale video if I use an S-Video cable?

I asked here if an S-Video cable could improve the output quality of my VCR (Sharp VC-M401SM). The answers were promising so I bought this S-Video cable (they send me a 2 m cable instead of 0.5 m). ...
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1answer
59 views

USB Webcam not working with USB Microphone

I have two USB devices: a webcam and a microphone. I can play the webcam's video into VLC and GUVCView. However, I want to use the microphone for another application. The issue is that launching ...
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1answer
67 views

Best practice for recording video calls

I’m a video producer isolated because of Covid19. I’m going to be spending a tonne of time recording guests over video calls. So far I’ve been asking them to record audio locally, recording the ...
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0answers
30 views

Application specific screen recorder for Android

For windows, using OBS studio, I can record the screen of a particular application. If in between, I open another window, the recorder records only the selected window and not the window on top. But ...
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1answer
39 views

Best camera for turnkey studio recordings

I work for a university, and I will be working on setting up a small recording studio for our department. The purpose of the recording studio will be to record high-quality educational content. We ...
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1answer
77 views

How to get a TV channel to stream as IP camera

My apartment building is broadcasting security cameras via a TV channel. I want to watch this broadcast on an IP camera viewer software (and there combine it with IP cameras that I am using). Is that ...
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1answer
38 views

Can I capture different native resolutions with the same CCD-Sensor?

Im working on a paper for my university and need capturings of the same scene in different native resolutions. Im currently using the Logitech BRIO camera with OBS for capturing. My question is: If ...
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1answer
30 views

How to record myself while not noticing myself?

I am using an Android Oreo phone. I would like to make a video of myself, but while I make it, I want the screen to go blank. This is so that looking at myself on the phone while I record will not ...
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0answers
552 views

FFmpeg 2017 vs 2019 decoding performance improvement

I was trying to do some basic profiling on ffmpeg, following my previous question here. I have a relatively high-bitrate .ts file (17mbps), and I have two versions of ffmpeg (2017.3 and 2019.4), and ...
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1answer
627 views

DeckLink recording using ffmpeg on Ubuntu 18.04 doesn't start

I've been spending the 24 hours troubleshooting this problem, but am getting a bit stuck. Pre-info: I'm running an Ubuntu 18.04 server with a DeckLink Duo 2 card inside. Goal: Capture video from the ...
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1answer
156 views

Compile FFmpeg example code

I was trying to compile an FFmpeg example code HERE that illustrates how to use filters using it's C APIs. I compiled the code (throuh a universal make). As the usage suggests, I'm doing this: ./...