Questions tagged [video]

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

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5answers
3k views

How to connect a camera to a computer 100ft away?

We are trying to live stream our worship service on Sunday morning. We have located an ideal spot for the video camera. Unfortunately it is 100 ft away from the sound and network connections which ...
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5answers
8k views

Are there any good video editing programs with a command line interface?

I am currently looking for a video editing program which I can control via the command line. The main feature I need is the ability to add some overlay text. Is there anything out there that can do ...
7
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6answers
7k views

Screen refresh rate above 100 Hz noticeable?

Is a refresh rate higher than 100 Hz still noticeable for the human eye? Tv manufacturers are still taking these refresh rates to new heights, but is there really a noticeable difference between a ...
7
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5answers
4k views

Software for video cut automation / scripting

I am very new to a/v editing and need to automate a simple process. Basically what I need is a way for my mom to capture video from her camera and input a series of numbers like 1:02 1:30 1:55 2:34 3:...
7
votes
2answers
326 views

How much is a good framerate for slo-mo recording?

As per the title, how much fps count should I be considering on a camera if I am looking to do slo-mo shots without framerate lag taking effect on video settings? On a side note, I don't know if this ...
7
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3answers
21k views

Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly

I am using below command to push the video to Wowza server, since we are pushing raw H.264 video, the RTP packet does not have the timestamp, and we could observe audio video sync issue while playing ...
7
votes
1answer
9k views

How to trim out black frames with ffmpeg on windows?

I have a short video and I'm trying to cut-out all the blank or near blank frames. This isn't a case where I care about the breaks in a video that could be dark. I literally want all near black-...
7
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2answers
2k views

Converting video with different resolutions slightly affects in file size, why?

I'm converting a video with resolution 960x720p using HandBrake on Mac. When I convert two videos with exactly the same settings but with different resolutions, the file size is almost the same. ...
7
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3answers
290 views

Are there any good video editing apps for photographers?

Photo editing apps like Lightroom have very intuitive ways (my opinion, of course) of performing operations on pictures. I occasionally do small video projects that I edit either in Sony Vegas on ...
7
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3answers
1k views

Copyright of materials used in a video

It is common that TV channels or internet TV channels (e.g. those regularly post their shows on Youtube) use materials from other sources. For example, displaying photos from the internet, parts of ...
7
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3answers
7k views

I changed the .mp4 extension of my video to .mpg and it still opens and plays fine (in VLC and in Windows Media Player). Why is this so?

I'm uploading a file to an external system that accepts only mpg or mpeg extension files. I had a mp4 file so I changed the mp4 extension to mpg and I was able to upload the file into the system. ...
7
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2answers
619 views

Continuous smooth camera movement in post

I'm editing a small video which got recorded on a really cheap tripod, therefore the Camera movment is really uncontinuous and not smooth. Any ideas how to make the movement smooth? such a thing as ...
7
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2answers
767 views

Video codec for simple animation?

I am generating an animation in Matlab, composed of simple diagrams. The images are characterized by fine structures, strong contrasts and mostly discrete colors, e.g. there are few-pixels wide black ...
7
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2answers
560 views

What video codecs can provide “adaptive quality”?

Background: I am trying to compress lossless bluray tracks to a more storage friendly size without a huge loss in quality. What I've been doing thus far: Exploring compression options with ffmpeg. ...
7
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1answer
9k views

How to trim a video with frame precision using ffmpeg?

I need to trim videos with a precise end frame, however, ffmpeg seems to cut the video at the nearest first key-frame. So I don't have enough control over the ending frame. I try to insert key-frame ...
7
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2answers
477 views

Convolution matrix for converting 1080i to DVD?

It's pretty common to shoot in HD but deliver on DVD. This requires a reduction in resolution from 1920x1080 to 720x480 (for NTSC). If you just interpolate and throw away pixels, you get bad aliasing ...
7
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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
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4answers
2k views

Duplicate layers X times and move 1 frame each time

I do a lightpainting video on After Effects (CS6 here) where I duplicate my layert to create continuous lines based on a moving light. I have a lot of comps to do and many layers to duplicate, then I ...
6
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6answers
2k views

Non-Linear Video Editor for Free or Cheap That Does These Things

Background I bought a couple of Handycams 6 months ago, and have since then been making videos and editing them and publishing them: Sathyaish Chakravarthy Over the period, I have downloaded and ...
6
votes
1answer
8k views

Crop video in ffmpeg without re-encoding

I have videos I want to split across multiple screens, so the solution I've found so far is to just crop the input video 4 times with ffmpeg (is this optimal? Is there some other way so I only need to ...
6
votes
3answers
497 views

Best Digital recorder for use as a ‘body pack’ + good field recorder?

I'm looking at getting something to use as a 'body pack' as opposed to using a wireless setup when using a lavalier microphone. I've looked into Tascam DR-08 vs. Zoom H1 or other. I found a ...
6
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3answers
11k views

Lossless extracting of JPEGs from an MJPEG video

Using the Timelapse app on my Sony NEX-6 camera, I get an AVI which contains an MJPEG stream. However, I'd like to take all the individual frames into Lightroom as normal photos, to do my post-...
6
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3answers
27k views

Is it possible to hook up an external mic to a Nikon D90 to get better sound for video?

I'm getting bad sound quality on video taken with my NIKON D90. I think the mic is bad so I need to know if it is possible to plug a microphone into it some how?
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8answers
8k views

Why don't phones correct vertical filming?

Many people get really mad at filmers suffering from the Vertical Video Syndrome and I find it hard to disagree. Phone-shot videos filmed vertically are really annoying to watch. But there's one ...
6
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4answers
5k views

120fps 720p footage with real time playback on Ubuntu? + editing?

I have a laptop with an i7 CPU, 1.73 GHz, 8GB RAM, Ubuntu 10.04 with an "ATI Mobility Radeon HD 5800 Series" graphics card. I have compiz enabled (which may be one of the culprits with the problem ...
6
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1answer
6k views

ffmpeg - video with timer

I am currently working with the drawtext and drawbox filters to recreate a similar video appearance to what is shown below in the image. I am trying to see of a possible ways to add a count down timer ...
6
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5answers
3k views

create video from hand drawing

I have a hand drawn image. How can I create a video out of it like this? What other options would you recommend? I want to create a presentation
6
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1answer
7k views

ffmpeg concat introduces a/v sync problem

I have one 2-hour video file and want to add a 10-second title sequence to its start. The long file has perfect a/v sync from start to finish. However, when I use ffmpeg -f concat -i mylist.txt -c ...
6
votes
4answers
31k views

How do I record a computer monitor without banding/flickering with a Canon t2i/550D?

As you've probably guessed, when recording video with a computer monitor in frame I am getting banding. I'm aware that this has to do with refresh rates of the monitor vs the scan rate of the camera ...
6
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6answers
31k views

Easiest way to stitch GoPro videos that have been split due to length?

I am recording 15-minutes videos with my GoPro Hero 3 Black edition. The camera starts a new file every 10 minutes of recording by default. I do not think I can change this in a setting. When I do ...
6
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4answers
2k views

Batch processing individual frames into video

I’m new at video editing… and hoping someone can direct me to the best software for my needs. Running on windows OS. I need to build a video from frames in tga format, convert them in different ...
6
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4answers
11k views

Is there any plugin for After Effects to create a 'kinetic typography' video?

I was looking at some kinetic typography videos - like the one below - and wondering whether there is a plugin for Adobe After Effects CS4 that can help with this. If not, then is there any other easy ...
6
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2answers
13k views

How to convert an MTS file without loosing quality?

I have shot some videos on a Panasonic v720 camcorder. The videos are huge. I used the internal feature of the camcorder to convert to MP4 and the quality was reduced very much. What is the best ...
6
votes
1answer
460 views

What is the name of that color test in video production with the beep?

What is the name of those colour test screens at the beginning of videos? I've used it before in Final Cut Pro but I forget what it's called. Thanks.
6
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3answers
52 views

How does shutter speed affect the video?

As shutter speed affects the coming light on sensor.But has it any affect on movement of subjects in video?
6
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2answers
3k views

Automatic conversion/encode video for Video On Demand streaming

I need an automatic solution to convert video clips for html5 (mp4/x264, webm/vp8) and flash (mp4/x264) video-on-demand streaming. For a site like Youtube, just much smaller. The input files are ...
6
votes
3answers
221 views

Looking For A Video Editor that will maintain the codecs of the original source video

Im trying to test various video/audio codecs by editing clips from larger videos that have the codecs I want to test. Although every video editor i have tried changes the codecs of the clips i create ...
6
votes
1answer
174 views

placing text in video filmed environments

I really love mixing reallife environment with floating text over buildings or virtual paintings on the walls. When the camera moves, the text also moves and looks like it is really attached to the ...
6
votes
1answer
941 views

D7000 HD video format - can each frame contain metadata?

In fact the question is the other way round: I shoot a HD video with my Nikon-D7000, and along the way things happen, such as I change zoom, focal length, light levels change such that the D7000 ...
6
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1answer
313 views

Video archive solution

We are a community TV station, looking to improve our video archive. Currently we archive our master files on external drives. But to make the archive easier to access, both for saving and re-using, ...
6
votes
1answer
6k views

Preventing flicker when recording live presentations

Say someone's giving a presentation with the projector image next to them. What I see when recording this is the screen flickers, kind of like top-to-bottom scan refresh that's actually visible. What ...
6
votes
1answer
2k views

Creating menu for a video file (not for DVD)

I need to create a menu for a video, which will be written onto a disk not in a DVD format, but as a single file (f.e. mp4). The problem is that programs such as Adobe Encore are not able (as far as I'...
6
votes
1answer
443 views

Is is possible to trim portions of clips in FCPX to save disk space?

I know that it's possible to selectively ingest in the import dialogue, but is it possible to delete "rejected" portions of clips once they've been imported, without deleting the whole clip? If not, ...
6
votes
1answer
2k views

How do I speedup encoding of a video that has just 1 static frame with ffmpeg and lib264 library?

I'm making mp4 (libx264 + aac) videos that have just one static image throughout the whole video. It's basically a narrated text with a nice background. The question I've is how could I speed up ...
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:...
6
votes
2answers
416 views

Is there a good collection of examples of the different type of video cuts?

So I'm a beginner when it comes to video editing, but I hear and read about a lot of different types of cuts between clips, e.g. jump cut, smash cut, etc. I always felt it would be great to just see ...
5
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3answers
48k views

Can I use the videos marked as “youtube standard license” for a non profit video?

I'm creating a video for my institution. It's a scientific institution, so I suppose that the video can be considered no-profit (we don't make it to sell our products but to show our scientific ...
5
votes
3answers
1k views

Camera shake produces ripple-like effect

I'm using a Kodak Zi8 at the moment, but I've noticed this effect on other cameras. When a camera is moving it occasionally produces fun house mirror-style effects. It makes things appear to stretch ...
5
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3answers
9k views

Does 4K impact quality when filming in low light? (other parameters being equal)

I'm wondering if filming with a 4K camera, possibly downsizing to Full HD, will give better detail than filming with a Full HD camera (other parameters being equals). Sub-question (maybe I should ...
5
votes
5answers
8k views

How to record a slide presentation efficiently with video/audio

I am making some video slide presentations (~15-30 minutes) which consists of a lot of animated slides and my voice. I made a test video to see where problems occur when doing such a project. It was a ...

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