Questions tagged [video]

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

342 questions with no upvoted or accepted answers
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7
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 ...
6
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1answer
1k 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
917 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
228 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
3k 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
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0answers
230 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
165 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
77 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
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0answers
96 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
299 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
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0answers
356 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
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0answers
25 views

How do you edit videos to slide on and off the screen?

Hi I’m trying to edit a group of videos so that they continuously slide on and off the screen. I was wondering if there was a faster way to do this instead of individually adjusting the position key ...
2
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1answer
24 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
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0answers
21 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
3k views

How can I merge five mkv files I've created in OBS Studio?

I used OBS Studio to create five recordings. Now I need to submit them as just one file on YouTube, so my five .mkv files has to be merged into just one file. Can it be done in OBS Studio, if so ...
2
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0answers
22 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
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0answers
535 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
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0answers
706 views

How to delete the very last frame of a video using ffmpeg / mencoder / transcode or any other?

I am trying to delete the very last frame of a video using ffmpeg / mencoder / transcode / or any other free linux application. Here is what I have so far, and it's only extracting it, it's not ...
2
votes
2answers
1k views

FFmpeg: Align Video & Audio of Desktop Capture

I am using FFmpeg's built-in gdigrab & dshow to record the display & audio of my system. I am encoding to uncompressed H.264/AVC video & uncompressed PCM/WAV audio. I had been having two ...
2
votes
0answers
772 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
263 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
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0answers
129 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
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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
165 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
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0answers
815 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
16k 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
642 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
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
115 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
94 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
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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
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0answers
339 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
372 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
546 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
644 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
0answers
21 views

Trouble combining audio and video streams

I have two streams, one audio and the other video. I'm trying to combine them using this command: ffmpeg -y -i audio.m3u8 -i video.m3u8 -c copy Video.mp4 I found this syntax here: https://video....
1
vote
0answers
19 views

Very weird behavior of video dimensions

I have a video (for some testing), when I check dimensions in properties, it says 640x1136 pixels. To cross check dimensions, I played it in VLC media player and took a snapshot from there, which ...
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0answers
8 views

Low latency on SRT stream

I am new to this and wondering, how can I get the lowest latency sending an SRT stream? I can’t seem to get under six seconds. Using, latency=10000
1
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0answers
46 views

Video Stream Loop FFMPEG for YouTube, what is missing here?

I am using FFMPEG for streaming 24/7 mp4 video on youtube. The video is somewhere in 2 minutes, the stream starts but does not go on replay, what should I do? I am using this code: @echo off d: cd &...
1
vote
1answer
77 views

Extract subtitles in time range using ffmpeg

I have original video (with subs) and cropped version of it (without subs). I need to add subtitles from original video into cropped in appropriate time range. I think the best way to do is: Extract ...
1
vote
0answers
37 views

draw rectangle when pixel in video has specific value using ffmpeg

My question might seem a bit confusing but what I want is simply to look at a specific pixel value and when it has the value eg. (25,25,25) in rgb, it would use the drawbox filter to draw a rectangle ...
1
vote
0answers
52 views

Audio clipping after amerge in FFmpeg

Hoping someone out there can help me with this audio issue I'm having using FFmpeg. I've written a bash script using FFmpeg that processes as source a broadcast quality ProRes (HQ) file with four mono ...
1
vote
0answers
78 views

FFmpeg loop video for 30 seconds generate a big video size

I'm trying to loop a 3 sec video to make it 30 sec, I use the following command : > ffmpeg -stream_loop -1 -i input.mp4 -c copy -t 30 output.mp4 It's working fine, but with the output size 40 MB, ...
1
vote
0answers
214 views

YouTube multiple audio tracks

I have a problem. I want to do YouTube videos with two voice-overs. And i know that it is possible because Assassin's Creed: Valhala's first trailer has it. But i can't find any way how to do it. Any ...
1
vote
0answers
36 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
38 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 &...

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