Questions tagged [video-capture]

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

Filter by
Sorted by
Tagged with
1
vote
1answer
712 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 ...
1
vote
0answers
26 views

Good device for recording me using my mobile phone

I'm an app developer and would like a (preferably not too bulky) head mounted video recording hardware that I can use to record me using my mobile phone. Operating the mobile phone works by holding ...
1
vote
0answers
9k views

Is it possible to capture the screen (video) with Movie Studio Platinum 13?

Is it possible to capture the screen (video) with Movie Studio Platinum 13 ? if yes , where do I do that ?
1
vote
0answers
605 views

DVB capture into ffmpeg in windows?

Looking for a way to use ffmpeg dshow to open a tv capture card within windows. I have tried running the list devices command and my usb capture does not show. If it is a device limitation, Im happy ...
1
vote
0answers
653 views

Connect a Sony HandyCam to a MacBookPro for streaming

I have a Sony HDR-CX330 HandyCam which does a good job recording low light events for us. Now I would like to stream some of these events live. The Camera has HDMI out, but I'm not sure how I get ...
0
votes
1answer
209 views

Call FFmpeg filter from source code (C API)

I'm trying to find out how to call a FFmpeg filter (freezedetect) from within FFmpeg's source code. I see the filter's file is under libavfilter/vf_freezedetect.c, but I don't know how to use that ...
0
votes
1answer
24 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 ...
0
votes
1answer
41 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: ./...
0
votes
1answer
29 views

Is a UK PAL video tape compatible with a continental Europe PAL VHS/S-VHS player in terms of video and sound

I've read that the difference between UK PAL and Continental PAL is the carrier frequency used for the audio. But is that referring to: the (now former) analogue TV broadcasts the encoding on the ...
0
votes
1answer
35 views

Retrieve and decode V-Chip data from an aired digital TV stream

I'm trying to retrieve and decode V-chip data from my TV streams (NTSC/ATSC digital streams). Apparently these data are embedded somewhere in the stream itself, but I have no clue how they are ...
0
votes
1answer
95 views

Is there image degradation when you apply the same chroma subsampling iteratively?

I have digitalized a set of old family VHS tapes. As you know, VHS relied on chroma subsampling. And the capture device creates files with the 4:2:2 tag. Now, when I encode again with ffmpeg to get ...
0
votes
1answer
31 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.
0
votes
1answer
33 views

making mouse click action obvious in a screen-cast video-capture

One of the challenges, in creating a tutorial video via screen video capture, is that it becomes a challenge to make obvious which mouse action was used to produce a certain action on the screen. The ...
0
votes
1answer
44 views

Highest quality way to extract a still from video

I have a MP4 that I really really want a still from. I want to make a canvas from that still. I have access to: Adobe premiere elements 12, ffmpeg and gimp. I want the still to be the highest ...
0
votes
1answer
452 views

What output video format for Kazam requires less cpu power?

Please tell me what is the appropriate StackExchange site to post this question if it doesn't fit here. I use Kazam to capture my videoconferences. It gets too CPU-demanding but the program is ...
0
votes
1answer
26 views

PCIe video capture card

Is it better to go with a video capture card with h.264 encoding or just a raw input port? I have powerful pc but not sure best card to use for high quality image, reliability, and ease of install.
0
votes
1answer
124 views

Mac video capture / recording at a resolution larger than, and aspect ratio different to, native display

Goal: I'd like to upscale a recording from a 1680 x 1050 (16:10 aspect ratio), 2010 Macbook Pro screen to 1920 x 1080 (16:9) for 'best-try' upload to a variety of target platforms (FB, YT, Vimeo etc). ...
0
votes
1answer
346 views

Alternatives to recordmydesktop?

I am using Recordmydesktop to record skype conversations. After an important recording, I went to the linux terminal where the recording was supposed to be taking place and all I could see was: ...
0
votes
0answers
88 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 ...
0
votes
0answers
18 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 ...
0
votes
0answers
29 views

How to use record video with ffmpeg

can someone tell me how I can record a video + audio and can I specify the fps and the resolution of the output file ? I'm very new to ffmpeg so i don't know much. Thanks.
0
votes
1answer
116 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 ...
0
votes
0answers
276 views

Desktop Capture Has Become Choppy/Jerky with FFmpeg

Recently, videos produced by capturing a window on my system using FFmpeg have become choppy/jerky, as if frames have been dropped or duplicated. FFmpeg will sometimes report that a number of frames ...
0
votes
0answers
151 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 (...
0
votes
0answers
15 views

Software and hardware recommendations

What softwares and hardware would I need to make a video lecture such as this? I am a mathematics tutor who wants to upload free YouTube video lectures. I require a ...
0
votes
1answer
39 views

How to capture / digitise a live satellite stream

I have coordinates, descrambling codes, et al for a live satellite broadcast. I'm looking to capture that feed into a digital stream that I can feed into AWS's Video services. My experience is ...
0
votes
1answer
107 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 -...
0
votes
0answers
111 views

Sample K representative frames within a video

I have an image-based processing module that takes photos for some computer vision processing. I have many videos, but I need to sample representative frames as its inputs, preferably those frames ...
0
votes
2answers
5k 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
0
votes
1answer
167 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 ...
-1
votes
1answer
31 views

How do you make video look natural?

I want the videos that I will shoot to feel natural and I don't know what I have to do. The research I did in the internet says aperture of our eyes are around F/8 in bright conditions and around F/2 ...
-1
votes
1answer
26 views

What is the good video equveilent of 1300D?

I was surfing the net and I found this answer. Bottom line with the canon rebel series cameras is that the video is pulled from a low resolution capture of the chip which is normally used for ...
-1
votes
1answer
65 views

Is there any free video screen capture applications?

I am trying to find a totally free screen capture application for Windows and MacOS. Is there any free apps that don't put watermark on the video ?
-1
votes
2answers
134 views

Why you need hardware (e.g. capture card) for video input?

To fully understand the how it works: you pick any device with HDMI output (let's say GoPro to reduce the variations) and you'll need a capture card for retreaving the data as multimedia signal. ...
-1
votes
1answer
25 views

which camera glasses allow recording while connected to power source

I am trying to use camera glasses for documenting benchwork. Most of available models allow 1 to max 2h hours of recording for as long as the battery lasts and only allow next recording after the ...
-2
votes
1answer
15 views

Software that captures and compresses simultaneously

I'm trying to find open-source software that compresses video captured from a webcam automatically. I'm thinking of automatically compressing like in post-production. For example, compressing the file ...
-2
votes
2answers
43 views

Is failure free streaming possible in todays world?

Is streaming video from one PC to a physical second PC with recording it there, without getting any frame drops, artefacts, basicly everything what the source video don't have, in todays world doable ...