Questions tagged [4k]
The 4k tag has no usage guidance.
54
questions
0
votes
0
answers
12
views
what are the factors in TV that affects video quality in cable tv/dish satellite tv in bigger(65 Iinch) 4K TV screens
I happened to visit a TV show room which had so many big TVs(55,65,70,75 inch TVs, Sony Bravia , Samsung , LG , TLC etc..) with amazing technologies such as
LED
OLED
QLED
QNED
NANO
and amazing ...
- 101
0
votes
1
answer
20
views
How to calculate lenses parameters to record a pc monitor
I want to make a video audit of my pc screen (4k). The distance would be about 40cm to the centre. Can it be done with much of distortion of the geometry (I cannot place the camera at the centre ...
- 101
0
votes
1
answer
379
views
What causes the 1080p version of a video to be blocky but the 4k version look perfectly fine?
I'm a complete beginner in all things photography, video compression and YouTube uploads so please bear with me. I recently uploaded a 4k 30fps video to YouTube, and when I select the 4k option it ...
0
votes
1
answer
137
views
I just bought a panasonic HC-VX981K 4K camera and wondering which is my best format to shoot in?
I just bought my panasonic HC-VX981K and was wondering which is the best format for just recording perfect video, it states that higher bitrate in 4K MP4 format but I'm hearing AVCHD progressive is ...
- 1
0
votes
3
answers
33
views
Effect of screen shape on video quality
How does the shape of screens (that is, different "width x height" values while keeping the same total displaying area) affect the quality for a given optimal viewing distance?
- 103
0
votes
1
answer
168
views
Any tips how to increase editing speed on Premiere Pro?
I'm using old notebook, which has a bit trouble with editing fottage highier than fullhd.
Is there any approach, how I can, for example work with small files first and than final export will process ...
- 209
0
votes
0
answers
33
views
Is there a camera that records video with a quality and style similar to the Black Magic Pocket 4k?
I was looking for a camera to record videos. My aim is to record videos to make films and music videos. I know there are many factors that are independent of the camera to make videos with a '...
- 101
0
votes
1
answer
23
views
4K video from Panasonic VC8xx broken?
I have recorded some 4K videos as MP4 file on Panasonic VX878 and 9xx. Both produce a video which, when played in VLC or other player on Linux, has 3 tiles: 2 next to each other horizontally at the ...
- 219
1
vote
2
answers
277
views
Simulating 1080p pan shot by cropping stationary 4K fisheye footage?
I want to achieve a panning shot, but I can't move my camera. The camera is stationary for reasons outside of the scope of this question.
Can I throw on a fisheye lense, film in 4K, and then process ...
- 121
2
votes
2
answers
3k
views
Why is 4K downsampled so much better than 1080p at low bitrates?
I noticed when I export my footage at low bitrates (eg. 10 Mbps, 1080p), my 1080p footage looks way blurrier than my downscaled 4K footage.
This is despite the fact that the original footage looks ...
- 81
1
vote
1
answer
7k
views
How to output high quality 360 VR video with Premiere Pro?
When editing a 360 video in Adobe Premiere Pro, I noticed that if I import the video into the program and export it again without any additional changes, the resulting file size of the output file is ...
- 131
0
votes
1
answer
211
views
Final Cut: Youtube 4K Upload directly or by file
For 4K video, Is better upload direct to YouTube or Is better to export in ProRes (or another) in hard disk and then upload the file to Youtube?
I record usually amateur football matches and upload ...
0
votes
2
answers
1k
views
Concatenating in sync MP4 (H264+PCM instead of AAC) from a Sony 2018 Camera
I downloaded these files (at max resolution 4K, that is important), in this order:
https://vimeo.com/195782736
https://vimeo.com/196725716
https://vimeo.com/195776765
https://vimeo.com/196651176
...
- 3
0
votes
2
answers
402
views
Downsample in Youtube or in editing software?
Target platform: Youtube
Target resolution for audience: Full HD
I record 4K in order to get better image quality from smartphone (2x birate of FullHD).
Should I resample and export the project in ...
- 209
0
votes
1
answer
89
views
4k upscaled Blu-Ray vs 4k upscaling on a TV
I was recently looking to purchase Game Of Thrones Season 1 on 4k Blu-Ray however after doing some research it seems that the first season was actually all shot in 1080p so the 4k blu ray discs are is ...
1
vote
2
answers
11k
views
Does Youtube accept 10bit uploads? If so, what codec should I use?
I am launching a series of videos to Youtube. These videos have a black background and lots of colored gradient changes. 4k, 60fps.
Unfortunately this picture style is causing terrible banding ...
- 111
1
vote
1
answer
2k
views
Is there a way to upscale without re-encoding?
Basically I need to take a h.264 8 bit 1080p render and upscale it to 4k without re-encode. Is it possible? And if it is, does the container matter? Cause ideally it needs to be mp4 container, ...
- 513
1
vote
1
answer
2k
views
The 4k videos from Sony a7iii are quite large by default, suggestions on HQ ways to compress?
The videos directly from the Sony a7iii set to 4k 100mbps are quite large. I've tested compressing them separately and see little video loss. I wonder if the camera has an option to by default apply ...
- 111
0
votes
1
answer
878
views
Is 4K 4.2.0 just HD 4.4.4
I've been reading about codecs lately and found out, that the 4.2.0 codec combines 4 pixels color to one used for all 4 of them, effectively lowering the filesize.
Now how does this compare to a ...
- 342
0
votes
3
answers
89
views
Can upconverting 1080p videos on 4k TVs, lower their quality?
I read somewhere its better watching 1080p content on native 1080p (Full HD) TVs, because they keep ORIGINAL video resolution without down\upconverting .
If that's true, so buying 4k TVs without any ...
- 11
1
vote
1
answer
1k
views
Best render settings for broadcast/4k TV
I see a lot of tips for getting h264 renders onto web streaming sites in 4K but not much on TV. Should I just go with Animation/lossless for my “master”? seems crazy for a 22 minute program but HDD is ...
- 121
1
vote
0
answers
2k
views
how to downscale 4k with ffmpeg
I have been searching all the web on how to downscale 4k video so that it can play on my non 4k TV.
My 4k video has a resolution of 3840 x 2160 with an audio format of pcm_s16be in a mp4 container. I ...
- 11
0
votes
1
answer
77
views
Datavideo KMU-100 FORMAT
I was able to get only one 4k camera signal into my KMU-100,to get 4 HD outputs.
The issue am facing right now is,
How do i get my two 4K cameras working on the KMU-100?
Because,the format i used for ...
0
votes
2
answers
3k
views
Editing 4k footage in 1080p project and rendering in 4k?
I edited my 4k footage in a 1080p Premiere Pro project.
Now If I render the project in 4k, will the 4k clips keep their Quality or will they downscale to 1080?
- 73
1
vote
0
answers
62
views
Best encoding setting for presentation like video
I have a video series that have a low fps by nature. The videos are in presentation format with audio.
The video is produced using Adobe Premiere Pro CC 2015 and contains 4K image clips and 256kbps ...
- 111
1
vote
1
answer
457
views
Recording 4K H.264 from HDMI to External Media
I've been searching for an answer to this but haven't been able to find anything definitive.
I use an Orah 4i 360 livestream video camera. It sends the camera video to a stitching box. The stitching ...
3
votes
2
answers
161
views
GoPro Hero 5 Session camera for long shot (crowd shot)
I am asked to shoot noncommercial event, which will last several days. I have my usual camera for close and middle shots (Lumix G6), and I am thinking to by cheap 4K camera for long shots (crowd shots)...
- 1,729
4
votes
1
answer
707
views
.mkv file not playing in HEVC/H.265 supported player
I wanted to play UHD (4k) videos in my new LeTV (Super3 X55).
So I used youtube-dl to download 4k YouTube videos (which are humongous btw) but for some reason most of them do not play.
The TV's ...
- 225
0
votes
1
answer
589
views
Sony Vegas Pro 13 insane 4k export size
So from my knowledge (and actual experience) Vegas 13 has one option for exporting 4k videos. My phone has a 4k camera, and recently I built a beefy computer and decided to edit some 4k footage.
The ...
- 129
2
votes
1
answer
782
views
Premiere sometimes not rendering 4k MXF files from Sony FS5
I'm working in 4k for the first time. I've got footage from a variety of sources, and I'm working on a 4k timeline (see sequence settings below).
When I try to render between In and Out points, I ...
- 7,585
3
votes
2
answers
6k
views
Downscaling 4K YUV420 to 1080p YUV444 with ffmpeg introduces red tint
I am downscaling 4K YUV420 video from the Panasonic LX100 to Full HD YUV444 using the ffmpeg console in Windows, and a script provided by user karl on the Personal View forum, modified for outputting ...
- 161
1
vote
2
answers
66
views
Tips to start making a little production
So I have to make a little commercial for a class at my college and it is a video of about 1 min. I already have the idea of how all is going to be but I'm worried that at the moment of the edition ...
- 13
0
votes
1
answer
50
views
Where can one find a current and definitive reference for video quality as it pertains to hosting HTML5 Videos?
At my job, I have encoded our sites videos for a couple years by using X-Media Re-encode:
MP4 1024x576 VBR 1500kbps
WebM 1024x576 CBR 1200kbps
I never had complaints about quality or buffering, I ...
- 101
0
votes
1
answer
665
views
DJI Osmo X3 vs Canon 5D Mk III for easier chroma green screen keying
Everything I've read indicates I'll get better green screen footage using a 4K camera rather than an HD camera as the increased resolution helps. But what about other factors such as the noise on a ...
3
votes
1
answer
417
views
4K Workflow in FCPX - crop down for multicam angles
Shot an 80min interview @ 4K 422LT (271GB)on BMPC and want to create 3x 720p angles for multicam. Unsure if it's best to create them as compound clips cropped from the one 4K master clip inside of ...
- 703
0
votes
1
answer
234
views
What is the origin of 4K term?
According to Wikipedia:
The name “4K resolution” refers to a horizontal resolution of approximately 4,000 pixels.
However, I believed that 4K is called like this simply because it has four times ...
- 783
0
votes
2
answers
5k
views
Downscaling 4k to 1080p in Premiere Pro, Image Zooming 2x
When I drop 4k footage onto the timeline in Premiere Pro, I get a 4k sequence. When I change the sequence to 1080p, the image zooms in. This makes sense. I then scale the image back 50% and I'm back ...
1
vote
1
answer
93
views
FCP retime timelapse image gets blurry
If i retime (speed up) my 4k footage, the image gets blurry.
If i stop the movie, i see a crispy still image!
Why?
I already tried to slow time the footage but it doesn't work
Thanks
- 13
1
vote
1
answer
2k
views
How to make Sony Vegas Pro 13 work on a 4K display
I bought Sony Vegas Pro 13 recently for my 4K laptop, but when I fired it up, the loading screen did not look good. The text was running into itself, and it didn't fit in the window.
When the ...
- 135
1
vote
2
answers
579
views
Why does 8K have 16 times the pixels compared to 1080p?
Considering 2K = 1440p, has twice the pixels compared to 1080p, 4k has four times as many, why does 8k not follow this trend?
- 113
5
votes
1
answer
6k
views
How should I encode my 4K video stream?
I'm capturing uncompressed 4K video from my Sony A7R II via a video capture device, and am using ffmpeg to save the video.
My problem is I don't know what codec to use. The two options I tried are:
...
- 457
2
votes
4
answers
6k
views
Why do cinema cameras cost too much?
Why do professional digital cinema cameras like ARRI ALEXA, RED Epic cost that much? They record 4k so do other cheap cameras?
- 209
1
vote
1
answer
219
views
Does it make sense to upgrade my set up to 4K from a (Canon) 70D set up?
I'm not very experienced, but I keep hearing, "it's a good time to upgrade to a 4K setup".
This is quite expensive, especially at this stage, but does it make sense from a logistical point of view? ...
- 113
3
votes
1
answer
146
views
How to capture 4K screens?
I want to create videos for youtube, but because I am using a 4K screen it is very difficult to find a proper recording solution.
My idea was to buy a card, that I can put into my computer that ...
- 131
3
votes
1
answer
3k
views
Convert resolution 4096x2304 to 3840x2160 keeping the quality the same
I have recently come into possession of a couple of 4k movies with a resolution of 4096x2304. Unfortunately my Samsung 4k TV wont play anything over 3840x2160.
I have managed to re-encode the videos ...
2
votes
1
answer
78
views
How to composite live 4K video with prerendered alpha matted footage
I'm looking to take a 4K live video feed, and composite alpha channeled footage on top of the live footage, all in realtime with minimal latency, I then want to display the output on a 4K screen .... ...
- 203
10
votes
2
answers
33k
views
H.264 Max Resolution
I was trying to find the technical reasons for why H.264 is limited for 4K.
Obviously that in terms of bit-rate it becomes less efficient but the encoding itself is limited and for some reason, I ...
- 203
2
votes
2
answers
69
views
Do Film Makers Want 4k?
I am looking at upgrading our camera equipment and am trying to work out, to 4k or to not 4k?
We need a relatively compact camera in size and weight for our productions specifically.
For generic ...
- 121
0
votes
1
answer
151
views
Is 4K good enough to choose for special footage such as weddings?
Resolution is obviously better in 4K but can anyone give some insight as to whether other factors of video quality are being compromised? If so, does it make sense to record in 1080?
- 153
1
vote
1
answer
2k
views
What is the significance of this "RED, Digital, and Film Format Size Chart"?
Little context is offered when this chart:
is linked. What does it mean?
- 143