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

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50
votes
1answer
60k views

How can I crop a video with ffmpeg?

I have an MP4 file of a screen recording that I need to crop down. How can I accomplish this without using expensive tools like Adobe Premier or Final Cut? I prefer ffmpeg because I have used it ...
41
votes
11answers
2k views

Good open source Video Editors?

Sure, I could Google and find random software. But I rather have the opinion of users that have had hands-on with any open source video editors. So if you've used one that you like or know of any, ...
17
votes
4answers
2k views

Why do weathermen and amateurs use green screens when professional movie makers use blue screens?

I've seen a lot of "low budget" green screen setups. However, when I watch things about professional filmmaking, it seems everyone is using blue screens instead. (e.g. I've seen Industrial Light and ...
16
votes
2answers
8k views

How does YouTube encode my uploads and what codec should I use to upload?

Related to What codecs/formats are appropriate for full motion video recording for youtube? I'm wondering exactly how I can expect Youtube to handle my videos. I know they have a rather zealous ...
13
votes
1answer
384 views

Why filmmaking with DSLR?

Adding video feature to digital camera was for their popular applications, as unprofessional users wanted to have both photography and videography at the same time. Professional cameras were ...
12
votes
5answers
12k views

Render srt subtitles to video?

I have subtitles in .srt file format, and I need to render them on top of video file (prefereably mp4). I have tried handbrake and mediacoder so far, with no luck. What should I do?
11
votes
6answers
8k views

How do I turn audio into video (that is, show the waveforms in a video)?

I have to create a video. Part of it involves "showing" a radio interview. Rather than just having a black screen and listening to the audio, I'd like to have a varying waveform on the screen and a ...
10
votes
4answers
26k views

How to losslessly encode a jpg image sequence to a video in ffmpeg?

I have a large set of jpgs that I want to convert to a video losslessly (or, at the very least, very close to losslessly as long as the encoding time isn't much higher than otherwise). Naively, I ...
10
votes
3answers
8k views

Convert a 60 fps video to a 24 (film) video - is it possible?

This may not be as simple a problem as it may seem at first, so read carefully. When I set my (Canon 60D, but this doesn't really matter at all) camera to record at 24 fps (I think it's actually ...
9
votes
4answers
814 views

How do I get a totally white background without the subject being too bright?

I would like to do a product demonstration similar to the White Room's demonstrations done by Apple, such as iPad 2 Product Demonstration What type of lighting is used to keep the whites extremely ...
8
votes
2answers
6k views

The ProRes of Premiere Pro?

I'm going to be editing more and more DSLR videos, most notably music videos for my band as we start releasing singles and want to know if there is an intermediate format for both cutting and ...
7
votes
9answers
160 views

Places to look for sound tracks for videos

I'm wondering what's a good place to look for background music for our video productions. I'm not asking for a free one, but for any good place with a good categorization of soundtracks and songs for ...
7
votes
4answers
879 views

What is the difference between an amateur and a professional camcorder?

It is known that professional photographers use SLRs & regular users use point & shoot camera. What kind of cameras do professional videographers use & whats the difference?
7
votes
6answers
6k 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
votes
6answers
8k views

Adding a time stamp to a video

Anyone know of a program that will add a visible date and time stamp to a video file? Preferably, I can just put in the start time of the video and it will just keep incrementing the time as the video ...
7
votes
2answers
250 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
votes
2answers
2k views

Is there any format for videos like RAW format for photos?

Like the RAW format for photos which stores the exact image information that is of great use for post processing, are there any similar formats for video?
7
votes
3answers
3k views

Cheap solution for shooting with multiple (>2) cameras in sync (genlock or LANC?)

I'm doing research into natural phenomena in computer vision, and I'm looking for a method of shooting video from multiple camera angles. It's likely that the subject will move very erratically, ...
7
votes
3answers
238 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
votes
3answers
860 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
votes
1answer
753 views

What codecs/formats are appropriate for full motion video recording for youtube?

I'm recording video game footage via lossless methods, after which I need to compress them and upload them to youtube. I'm not sure which format and/or codecs are best for this. I've been ...
7
votes
3answers
4k views

Best Lossless Video Encoder For Editing

I'm looking for a good video encoder to compress HD files for editing within Sony Vegas Pro and Adobe After Effects. What video codec would provide the fastest possible encoding and decoding? Also, ...
7
votes
1answer
952 views

Batch resize videos with “pan and scan” cropping

I am trying to prepare a collection of ~120 video clips to be played in VLC Player and projected on a low-res (1024x768) projector during a DIY electronic music event. The source clips are all super ...
7
votes
2answers
2k 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
votes
2answers
437 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
votes
0answers
372 views

Is it possible in FFMPEG to change scale over time?

Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
6
votes
3answers
83 views

Does a real “megapixel lens” exist?

Many of new model of lenses are defined as megapixel (i.e 1MP, 2MP, 5MP...). My problem is that I did not find any difference between a standard lens and a "megapixel" one, in the focus quality. I ...
6
votes
5answers
1k 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 ...
6
votes
6answers
3k views

Video with person 'writing on glass' effect

I'm trying to find someone who can make videos similar to one shown here: At 49 seconds, the actress writes on glass to explain the concept. ...
6
votes
4answers
751 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
votes
6answers
32k views

How to reduce wind noise from a video?

I am using a Canon EOS-650D to record video and I have a problem with wind/noise on my recordings. Can anyone tell me how can I reduce noise/wind from the recorded video. I usually edit my videos on ...
6
votes
3answers
2k 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 ...
6
votes
5answers
6k views

How can I find duplicate videos from a large set of videos of varying formats?

After losing a backup device with a bunch of my original videos I've had to download a large number of them (~300) back from Youtube. The new downloads are a mix of MP4 and FLV, and the originals are ...
6
votes
2answers
2k views

Why does all timecode start at 1 hour? (01:00:00:00)

Is there a reason timecode in Final Cut 7 and timecode in Pro Tools starts at the 1 hour mark? eg. 01:00:00:00? As opposed to all zeros? Some old broadcast standard that I don't know about?
6
votes
3answers
978 views

Best way to batch rotate 3000+ h.264 videos?

I have approximately 3000 short video clips, each about 3 seconds in duration. I need to rotate each of them 90 degrees. What is the best way to do this? I have Adobe Creative Cloud subscription, as ...
6
votes
2answers
1k 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
2answers
3k views

Does raising the framerate while not changing the bitrate result in quality loss?

AFAIK, the bitrate is the number of bits per second. So let's say I have two videos, both using the same codec, bitrate settings and resolution. If the first one has a framerate of 25fps, but the ...
6
votes
1answer
175 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
2answers
317 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. ...
6
votes
1answer
244 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, ...
5
votes
3answers
348 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
votes
3answers
432 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 ...
5
votes
3answers
17k 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?
5
votes
1answer
4k views

ffmpeg drawtext filter - create transparent background with text

I am currently working with the drawtext filter. So far I have only been successful with drawtext option configurations to use the right font and place the text horizontally centered. How could i get ...
5
votes
4answers
4k 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 ...
5
votes
5answers
2k 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
5
votes
4answers
17k 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 ...
5
votes
4answers
23k views

How can I merge/link two video clips in Premiere?

Every time I search this problem in Google the only options are how to link audio clips to video or how to sync audio to video clips. I need to combine/link/merge a picture to a video clip, so that ...
5
votes
4answers
9k 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 ...
5
votes
2answers
46 views

Optimal pace of speech

I am applying to a scholarship, where I need to answer some questions in a one minute long video. I would like to push as much information as I can, but I wouldn't like to make it over-crowded... so ...