Questions tagged [video]

Video is the technology of electronically manipulating still images that represent motion.

339 questions with no upvoted or accepted answers
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8
votes
0answers
3k views

Using ffmpeg to cut videos with more precision than key frames allow

I'm trying to cut a video (a debate on TV) with FFmpeg without re-encoding, and I need to cut between 2 sentences a guy pronounce. I think the precise moment is between two keyframes, because whatever ...
7
votes
4answers
413 views

How to detect whether a video is shaky

I need to stabilize a video only when the video is shaky. I have successfully stabilized a video using FFmpeg, and I do not need to stabilize all the videos, I only need to stabilize the videos ...
6
votes
1answer
984 views

Making a Digital clock with a specific time for Sony Vegas Platinum 12

I'm using Vegas Platinum 12 and I want to create a time code in a video. But here is the catch. I want to start the clock at a specific time and have the count start at that time, i.e 05:21:34 or 21:...
4
votes
2answers
738 views

Is it feasible to create a true multi-language video file with visual localization?

I'm of Russian descent, but I've been living in Germany for the better part of my life now, which means that I deal with both German and Russian media on a regular basis. Most video stuff I have will ...
4
votes
1answer
216 views

GoPro looping settings

I'm using my GoPro Hero3 White as a dashcam. Setting it to overwrite files, I encountered 2 strange things: 5min settings give me 1min files, and 20min settings give 5min files. The counter stops at ...
3
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0answers
2k views

How to use ffmpeg to send video stream to another server that gives exactly same quality as manually copying the file to that server?

I tried doing this ffmpeg -i tcp://192.168.1.41:5000?listen -c copy out.avi and have another client publish to this server using ffmpeg -i 1.avi -map 0 -c copy -f mjpeg tcp://192.168.1.41:5000 ...
3
votes
0answers
197 views

What's the use-case of the Video Snapshot function on Canon cameras?

While browsing the video settings on my Canon 77D, I came across a peculiar function: What is the Video Snapshot function? The Video Snapshot function enables you to shoot short scenes that last for ...
3
votes
2answers
123 views

Video File Navigation

Is there any way to provide navigation in a video file like a DVD or Blu-Ray? I know that QuickTime supports Chapter Markers, but the codecs you can use with QuickTime result in very large files. As ...
3
votes
1answer
75 views

Divide video ouput

I will soon be in charge of multiple screens for scene at a concert. Those screens are centralised and a video output will be give to me. I'am looking for a way to divide this video output into two ...
3
votes
0answers
92 views

Video and Telemetrics not in sync

I've recorded a video with Raspberry Pis Camera Module. On top of that I've recorded GPS data including the GPS Timestamp and made my own data file. Using Dashware I've tried to get the video and ...
3
votes
1answer
293 views

Old webcam recorded video not playing

I have this video (length 1-2 min) recorded on Dell webcam 3-4 years ago. It played smoothly at that time. Now when I play it, for first 40 seconds it plays well but after that video goes blank and ...
3
votes
0answers
2k views

Determining original resolution of an upscaled digital image?

It is believed that anime is made at resolutions below 1080p. most anime are [made in 720p]. Very few anime series are produced in native 1080p. Yet if anime is sold on Blu-Ray, it is (usually) in ...
3
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0answers
348 views

Is there a way? multiple images to looping video via ffmpeg?

I want to use ffmpeg to create a 15 second looping video from images for posting to instagram. For instance: Camera takes 3 pictures Each image plays for 2 frames (3 images = 6 frames) After 6 ...
2
votes
1answer
14 views

How to reverse Ken burns effect?

If some videos created by other people have ken burns effect, is it possible for me to remove it and get static fullscreen view?
2
votes
1answer
24 views

Why is ffmpeg producing a background?

I am a chemist and since a few weeks I am making short videos with ffmpeg by combining images, I am using the command below (for some reason without profile:v high, powerpoint crashes when I would ...
2
votes
0answers
21 views

remove wire on video

Can't see any other posts on this site about this which seems unusual so here goes. I have a video in which a wire is used to pull an object from the scene. I did a test which worked well, but the ...
2
votes
0answers
20 views

AE - Tracking in Comp different when played backwards?

I've come across a rather strange phenomenon in After-Effects. Here's what I have: I tracked some shaky footage and applied the tracked motion to a null. Then, a camera follows that null, thus ...
2
votes
0answers
18 views

Name of old VHS content blocker device

I am not sure if this is the right network to ask this question but it's the closest I could find. An acquaintance of mine told me that, when he was a kid, they had some kind of content blocking ...
2
votes
0answers
430 views

Is QTGMC still the best deinterlacer?

From reading various video forums, QTGMC seems to have a reputation as being one of the best tools for deinterlacing video (at least from an open-source perspective), with Yadif in second place. Is ...
2
votes
0answers
686 views

Extract file thumbnail from mp4 file

I'm currently converting a few mp4 file to mkv. In the process they lose their file thumbnails and I wanted to keep them. So I'm searching for a way to extract the custom thumbnails from the mp4 files ...
2
votes
1answer
232 views

Create a splitscreen video from two videos of different lengths with delay

I want to create a splitscreen video from two video clips. Left one is of duration 70seconds. Right one is of duration 80seconds. In the splitscreen video, the right video should start first. Left ...
2
votes
0answers
115 views

Tripod Quick Release Video Pin Dimensions

I have an Industrial camera that I am working with and I want to mount it to a standard tripod that features a quick release with video pin; otherwise known as an anti rotation pin. While I wait for ...
2
votes
0answers
1k views

Canon 800D “Movie digital IS” stabilization - cropping video shot?

I am new to DSLR video and wondering, how is actually working "Movie digital IS" stabilization of my Canon 800D. If you shoot video, there are 3 options of IS stabilization - no stabilization, IS ...
2
votes
1answer
116 views

Dealing with dropped frames in background plate when doing keyframe animation in After Effects

I am working on a video which includes some dropped frames ever so often. When a frame dropped, it repeated the previous frame sometimes 2 or 3 times. I am overlaying many objects on this video, and ...
2
votes
0answers
757 views

FFmpeg Windows MP4 - remove specific frames

I have a movie - movie.mp4. I wish to remove/delete specific contiguous frames from movie.mp4 which are located somewhere near the middle. Specifically, total frames in movie.mp4 = 33,595. I would ...
2
votes
1answer
1k views

ffmpeg: joining videos leads to “time skips” during playback

I hope that someone can help me. I have the following two videos: $ ffprobe 0.ts ffprobe version 3.2.4 Copyright (c) 2007-2017 the FFmpeg developers built with gcc 6.3.1 (GCC) 20170109 ...
2
votes
1answer
15k views

how to get vdpau hardware acceleration using ffmpeg?

I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
2
votes
0answers
622 views

Virtual webcam with MJPEG output

I have an very specific situation maybe someone can help with. The short story/question: Is there a virtual webcam software that can output as a virtual webcam in the motion JPEG (MJPEG) format? ...
2
votes
0answers
181 views

Video codec for progressive enhancement

JPEG has a progressive enhancement mode where a full frame can be downloaded quickly at low quality, and then the quality enhanced as the file is continually loaded. (Example image from http://...
2
votes
0answers
56 views

Realtime fulldome video splitting

I need to split fulldome video stream to several projectors for planetarium. I wrote hlsl (and glsl) shader which does exactly what I need and has some configurable parameters. It works in MPC:HC that ...
2
votes
0answers
113 views

Genlocking 5-6 sj4000

I'm planning on buying 5-6 sj4000 and use them to create 360 images and videos. This is the oem sj400, not sjcam sj4000. Does anyone have an idea how to genlock to trigger them together. I've seen ...
2
votes
0answers
90 views

How to make batch ffmpeg with this codes?

How i batch render with ffmpeg with this code on windows? Codes work well. ffmpeg -y -loop 1 -i background_image.png -i mainmovie.mov -filter_complex "[0:v]setpts=PTS-STARTPTS[V1]; [1:v]setpts=PTS-...
2
votes
0answers
4k views

Fast encoding with ffmpeg

I know about presets but faster presets lose the video quality. Are there any hardware requirements I need to consider? Or are there any settings that I need to tweak? And lastly where do I place the -...
2
votes
0answers
317 views

ffmpeg to cut intro and replace with new intro

I am using ffmpeg to cut out the intro in my video and replace it with a new intro. I run into a buffer underflow error when I try this. The commands I'm using are: ffmpeg -i LegalFinancialPlanning....
2
votes
1answer
10k views

Corrupted video (Green/pink) on Premiere Pro CS6 in Win8.1 Pro 64bit but not on Mac OS Yosemite

I have a volume license for Premier Pro CS6 whereby I can run it on Mac OS and Windows. When I run it on Windows, I get this: But on MacOS it is fine. The video is HDV 1440x1080i MPEG4 QuickTime. ...
2
votes
0answers
961 views

Dxtory recording randomly crashing game

Whenever I try to record gameplay with Dxtory (using the h.264 codec) my game will crash after a seemingly random amount of time, although it is usually after at least 30 minutes. Dxtory produces no ...
2
votes
0answers
366 views

avconv: How to blur scenes?

I want to blur some scenes with avconv The ffmpeg command -find it here- is: ffmpeg -i input.avi -vf "boxblur=enable='between(t,22,113)'" -codec:a copy output.avi doesn't work with avconv ...
2
votes
0answers
10k views

Using GoPro Studio to edit non-GoPro videos

I'm trying to use GoPro Studio to create a video that includes GoPro video as well as HD video from an iPhone. GoPro Studio was not able to deal with the .MOV file from the iPhone (the audio was ...
2
votes
0answers
545 views

What is a good wireless solution for video monitoring for BlackMagic Design Cinema Cameras?

We are looking for a video monitoring solution that is portable and used with the BlackMagic Design Camera. I found a link with devices that look great. http://blog.vincentlaforet.com/mygear/...
2
votes
1answer
570 views

Play 24fps video smoothly on 50Hz monitor

Most of the content that we download or get from media is 24fps. Which can not play smoothly on 60Hz/50Hz monitor as 24 frame can not directly sync with 50/60Hz monitor. Now my question is it ...
1
vote
2answers
9 views

What effect did they apply here?

I redrew the image on the left in Blender, but I want to use AE to achieve the "filmy" look on the right. What type of effect did they use here? You can see from the corner of the screenshot ...
1
vote
1answer
13 views

Software to “control” a video show

I'm working on a magicians show. They need some videos to be played during it, but the timings of their work could vary. So I was wondering if I could find some kind of software that could be used to ...
1
vote
1answer
17 views

When I view a youtube video on mobile, does it take lesser data than on laptop?

I have a very basic naive question. When I watch a youtube video on mobile over internt, does it consume lesser data than if I watch the same video on large screen size on laptop?
1
vote
1answer
9 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 ...
1
vote
1answer
19 views

Combining a short video and long audio file efficiently using Vegas or FFMPEG

I have a need to repeatedly create videos that have a short 15 second intro that fades to black and have really long audio tracks like 8 hours. I generate the video in Vegas and the audio in Cubase. ...
1
vote
0answers
28 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 ...
1
vote
0answers
16 views

DJI RS2 Gimbal loses axis on hard pan

I noticed an issue with the gimbal DJI RS2. When the gimbal is in PF mode and when I do a hard pan left, the entire gimbal turns around and loses the axis (Please click here for video - Sorry for the ...
1
vote
0answers
14 views

Add external mic using Sony “A/V R” plug

I have a Sony HDR-CX100 video camera that I would like to connect an external mic to (3.5mm plug), but the camera has no dedicated mic input. However, it as an "A/V R" plug: Before you say &...
1
vote
0answers
99 views

FFmpeg :How to convert to XDCAM HD-422 correctly? (or how to force frame order to BBIBBPBBPBBPBBI like XDCAM HD-422 )

I exported some XDCAM HD-MXF files with Adobe Premiere and Edius,both exported files are the same, I was surprised to see the order of their frames because they are like this : BBIBBPBBPBBPBBI... But ...
1
vote
0answers
12 views

Seeking for advice with dealing with out of sync audio

I have a bunch of videos from games caputured with NVidia's Share. They are trimmed using VLC. I have one video that is 1 minute and 38 seconds long (a lot longer then the others). If I play it in VLC ...

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