Tagged Questions

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

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1
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1answer
37 views

What is wrong with my “new” camera? My playback looks bad

My old Canon mv690 camera recorder got broken. It uses MiniDV casettes. To play many old recordings I bought a used Canon GL2 Mini DV 3ccd camera to play my old casettes, but the image is not ...
2
votes
2answers
323 views

After Effects Not Rendering Transparency

Completely new to AE, but I've watched like three tuts on youtube and I've spent way to much time on this... I have a comp that I made that is a write-on effect. I have selected the alpha channel ...
5
votes
2answers
95 views

What do you call the video effect where water looks like it's standing still when filmed

I found a few interesting effects, which was labelled under the rolling shutter effect, however I was told that this was NOT an example of rolling shutter effect, what would you call this effect? The ...
2
votes
2answers
45 views

Benro and Manfrotto Monopods - QR System

I was looking into some monopods to improve my on-the-run potential for some upcoming projects and I'd like to unify all my gear with one QR system so I can switch from a slider to tripod to monopod ...
4
votes
5answers
779 views

How to create and film ghost special effects

I need to film a piece that is supernatural in nature and has several characters that are ghosts. I've thought of numerous ways of accomplishing this but would like some suggestions on which would be ...
3
votes
2answers
293 views

Recording and playing video with variable frame rate

We are using a streaming camera to record and to play back surveillance video. This camera sends a rtsp stream which will be recorded by our application as a H264 video. In our application, the ...
1
vote
2answers
34 views

Stock footage search service

Is there any service where I can describe stock footage that I need using human readable search terms and sentences and send out a search request to multiple footage archives at once, so I will not ...
2
votes
2answers
92 views

Will I lose quality when converting avi to mkv?

I have a lot of *.avi files with either 1 audio track or several. All of them are mp3 encoded. The video codec is xvid4. However, when I play these avi files I can choose between the audio tracks ...
1
vote
1answer
66 views

Why does compressor output 960x540 when frame size is specified “up to 1280x720”?

Is there any way to produce output video at 1280x720 resolution using the "Apple Devices HD (Most Compatible)" setting in Compressor? When I specify a frame size of "up to 1280x720", the output ...
2
votes
2answers
110 views

Video Encoding - Wasting Space

I am facing a common issue that I cannot find a term to describe: I have a few low quality VHS rips that were encoded with a certain Apple ProRes codec (irrelevant in the context of this particular ...
2
votes
3answers
131 views

FFmpeg MP4 to FLV too slow

I am converting .mp4 files to .flv using ffmpeg in centos. But the conversion time is extremely too slow! It takes about 1.5 hours to convert 500MB .mp4 file into .flv. I am using a linux vps with 2 ...
6
votes
6answers
1k 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 ...
4
votes
0answers
84 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 ...
3
votes
1answer
68 views

Create a Video File or PNG Sequence of Writing Out A Word

I was wondering if there is a generator, or something out on the web where you type a word, and it would create a video file of it being written out. I want to embed the file on a site, so when you ...
1
vote
4answers
680 views

How can I make professional video using an iPad?

I am willing to make an educational guidance video. And since I want to make it using an iPad, what things should I keep in mind? And which specific camera app will be better over the inbuilt camera ...
2
votes
1answer
481 views

Add an image in front of video using ffmpeg

I have many videos and I need to put an image in front of them for about 5 seconds, but adding it manually and rendering it each time would take really long, so I am asking if it is possible to do so ...
0
votes
1answer
85 views

Wireless IP Camera

At present I have a software solution that involves 4 analogue cameras connected to an encoder that is plugged into my router. My application then reads the rtsp feed from the ip address from this ...
4
votes
1answer
74 views

Advice on how to determine right camera equipment and set up for multi-sport court?

We are building a 65ft x 30ft multi-sport court with 13ft walls all around (similar to the one pictured) and we would like to know what video camera equipment would be the most appropriate in order to ...
1
vote
1answer
36 views

Little skip in webm videos joined with mkvmerge

I've donwloaded some youtube videos that I want to join. I joined them with mkvmerge, but in the joined video, there are ~5 seconds skips (in VLC the second counter stops and then jumps 5 seconds) at ...
1
vote
0answers
27 views

Software to allow video presenter to draw directly on the screen [duplicate]

I'm currently enrolled in a coursera.org course which has the presenter standing in front of the camera with a completely black background behind them. While presenting, he would drop directly on the ...
1
vote
2answers
31 views

Are Mini DV and Digital 8 considered film?

MiniDV is using magnectic tape as storage and use the discrete cosine transformation compression technology. Does the use of magnectic digital tapes no more film?
2
votes
2answers
34 views

QuickTime File Format (Atoms & Flags)

What is the purpose of Media Atom 'flags' within the QuickTime videos, I see for the most part they are set to zero but what does this achieve? Documentation I am reading is the following: ...
0
votes
0answers
45 views

How to detect which part of the video is using copyright audio on facebook

I am having a issue i.e: Facebook deletes the video uploaded by me and says It contains copyright audio. It is 6min video so how could I know which part is being aborted by Facebook. Thanks a ...
1
vote
2answers
151 views

ffprobe - why total bitrate is greater than sum of video and audio bitrates?

I have been working on video conversion. So, to find out video parameters I used ffprobe. However, when I run the command on an mp4 video file, I observe this: Total bitrate: 3547 Kb/s Video ...
0
votes
1answer
147 views

rendering with the video card in MeGUI

I do not know this is the right forum to ask for help. I need help to speed up rendering with the software MeGUI 2500. First I render to premiere with the help of CUDA. CUDA makes the video card ...
1
vote
1answer
68 views

Record video and sound with backtrack

Here is my use case: I want to record myself (sound and video) when I play the trumpet to a backtrack. Now if I didn't want the video I would simply: record the backtrack with a DAW record myself ...
2
votes
0answers
86 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. ...
2
votes
1answer
117 views

H264 framerate information?

Does raw H264 data (stripped from an RTP stream) contain information about the framerate? Or is the framerate derived either from RTP timestamps for stream reproduction or written the container files ...
1
vote
2answers
35 views

Does the Sampling Rate affect the syncing process to a video source?

I have recorded interviews using a point and shoot camera for the video and my android phone with Smart Recorder. The camera records in MOV and is uncompress with mono audio. Then I use my smartphone ...
2
votes
3answers
713 views

How to detect and extract words from audio/video stream online in a webpage itself?

I have a video (or audio, I think it is not important) stream/file which does not contain subtitles. But it has clean english speech. Is it possible to detect and extract words from it. I don't need ...
1
vote
1answer
65 views

A way to create a moving graphic annotation

imagine I have a video of a car moving from right to left, and that I want to add a graphic annotation in a specific frame at a certain time. I would like that this graphic annotation, after I have ...
2
votes
3answers
346 views

Which sensor is better for video, cropped or full frame?

I was watching a you tube video on cropped sensor and they the author mentioned that for video it does not really matter whether you use cropped sensor or full frame? Does the sensor size matter for ...
2
votes
2answers
187 views

Overlay an image onto live video feed

I want to take a live video feed (say from a security camera) and overlay an image over the top of the live video. Is there hardware/software to do this realtime? I don't care about storing the data, ...
0
votes
1answer
44 views

Help with a Video streaming a Meeting and archiving it in HD using 1 camera

The Setup Sony Camcorder connected to IMAC via firewire And a PC via Component cable to HDMI on the PC Imac records Hd video using IMovie and a 2TB Harddrive Pc Streams using DaCast to Flash encoder ...
2
votes
3answers
4k views

2GB vs 4GB Graphics card Memory for playback and encoding of Videos in Adobe Premiere CC

While looking into buying a new graphics card for the editing, live playback and encoding of videos in the new 64bit Premiere Pro CC, I was wondering about: 1) how and when a graphics card's ...
1
vote
1answer
32 views

Best file format workflow for Final Cut Pro 7 on Maveriks

i am having problems exporting my project in Final Cut Pro 7. All the clips i am working on are mov in h.264. I want to export correctly a master file, that will be converted in web format, hd... with ...
1
vote
0answers
72 views

ffmpeg-php with fixed width and height and without stretch or squish

Hi there I googled for hours but no success to solve... This code works for me exec("ffmpeg -i $SourcePath -ar 22050 -ab 32 -f wemp -vf scale=500x400,setdar=16:9 $uploadpath1 2>&1"); but ...
1
vote
1answer
87 views

What lenses are preferred for DSLR video?

I do plenty of Macro and product photography (love the Tamron 60mm Macro). I have no idea what videographers who use DSLR like for lenses. Any advice and broadest usage appreciated. Assume camera in ...
1
vote
1answer
302 views

Playing back 1080p and 720p videos (same bitrate) on a 720p display

Suppose a high quality, uncompressed video is re-encoded twice, with almost identical encoding settings at a relatively low bitrate of 4mbps, but at different resolutions, first at 1080p, and then at ...
1
vote
1answer
65 views

Can video frame size be increased?

I have two videos that need to fit these specs: "The minimum frame size is 1280w X 720h pixels (either progressive or interlaced is acceptable)." Video A is: 480 × 640 [.mov] & Video B is: ...
2
votes
2answers
252 views

Camera features useful when recording a live high school basketball game?

What features should I be looking for in a camera (typically found in cameras less than $1000) for shooting a high school basketball game? The intent is to use the video for "Game Film" type analysis ...
1
vote
1answer
64 views

How Was This Isometric Vector-looking Video Made?

I'm dying to find out how this beautiful video was made - what program produces these semi-3D animated marketing pieces? There are flat lines curving around text content in a fixed camera view...it ...
1
vote
1answer
80 views

How to make a 3D animated video from video games as realistic as possible?

I am thinking about using The Sims game or any of the similar kind to capture video and then I would use the recording to add my own audio input. My friend and I are trying to make a kind of comedy ...
3
votes
2answers
58 views

How does one recover a multiplexed video stream with missing headers?

I have some video files which were stored with the format headers in separate files. Unfortunately, the disk crashed, and the header information has been lost. I still have large chunks of stream ...
1
vote
0answers
18 views

How to make video with moving text and objects? [duplicate]

I want to make a video with moving text and objects like in the youtube video link below. ...
1
vote
1answer
50 views

Video Format Compatibility with GoPro cine studio

Can a video recorded using Edmund optics camera in mp4 format be played and edited in GoPro studio? The video I have recorded can not be imported.
2
votes
3answers
45 views

In video, can previous frames effect results seen in subsequent shots?

While watch a shot on YouTube at .25 normal speed, I noticed two distinct images of the rocket fired at the ship from (25-26s). Is this an effect of the video, the film, or the result of a video ...
0
votes
0answers
20 views

why has the aspect ratio changed on my video between programs?

I am using a Mac and have set my video to 1080 height 1920 width, this shows up on quicktime fine as well as any video sharing websites, youtube for example. However when put onto a pc using windows ...
1
vote
2answers
51 views

What is the max video fps Nikon D5100?

I want to play around with slo-mo videos but don't have proper gear for it. Is there a way to get my D5100 to shoot at a high fps (maybe by reducing the video res)?
0
votes
1answer
70 views

How do I make a space themed video intro?

I am new to video editing. I have been using iMovie and there is a preset video intro with a space-theme that I like but i want to edit the intro itself which the iMovie software won't allow me to do. ...