Questions tagged [video-quality]
The video-quality tag has no usage guidance.
306
questions
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5 views
What is the difference between lossless and lossy formats?
What exactly are the differences between lossless and lossy codecs? And is one better format better than the other or is it mostly relative?
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10 views
VP9 with ffmpeg low quality problem
I'm testing vp9 codec for the web video platform,
and cannot get a satisfactory quality for one movie.
This is very dark film encoding with vp9 generates ugly circles.
This is the original frame (I ...
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1answer
10 views
How to get ffmpeg configuration similar to that of youtube for 480p and 1080p video? I have got a function but the output quality is too low
Hey guys I am learning to develop a website that converts videos to youtube quality (or close enough) 480p and 1080p, I am not much familiar with ffmpeg and struggling with its documentation.
I have ...
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24 views
Why is the quality of my video so bad? (bitrate Zoom versus OpenShot)
I recorded a zoom meeting (saved as .mp4) and made a few trivial changes with OpenShot (trimmed a few seconds from start and finish, and added image at the beginning). Then exported the video trying ...
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20 views
Does YouTube accept AviSynth .avs scripts for uploading?
Without reencoding videos first? Is it possible to browse for .avs file and upload it, provided AviSynth is properly installed locally?
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15 views
How to reduce the light reflection to see the number plate
I’ve attached 2 images below of different angles from cctv footage, however the number plate is not visible due to light reflection. Is it possible to remove this light in order to get the number ...
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18 views
Out of gamut problem detection
Are there any free tools (or with trial version) to detection Gamut problems in video file?
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0answers
20 views
Recording in 200 Mb/s + on smartphone
Is it possible to record video with a bit rate of 200 Mb/s or more on a smart phone (iphone or android)? I've found a few apps that supposedly get you up to 100 Mb/s, but I'm hoping for as close to ...
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28 views
Why is the quality different on two videos with exactly the same codec / bitrate
I do a lot of video converting with programs like Format Factory and Any MP4 Converter. I downloaded season 2 of The Black Sails. It's roughly 10 hours total video at only 1.95gb with SURPRISINGLY ...
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3answers
72 views
What is the video equivalent of vector graphics?
Images and videos have their own quality standards and protocols. There are either raster image file formats (.gif, .jpg) or vector graphics images (.svg, .pdf). No matter how much you zoom in on ...
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21 views
recording uncompressed or > 150000 kb/S video on a smartphone or tablet
Is it possible to record uncompressed or > 150000 kb/S video on a smartphone or tablet?
If so, how and what devices are compatible? I am able to do this with cheap logitech webcams, however the ...
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19 views
Why does my ipad/macbook video camera quality not match logitech hd c270 quality?
I am trying to write a program that takes a video of someone's face, extracts the RGB values, and then uses the color change (imperceptible to the human eye) to map onto heart rate. When I use a ...
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28 views
Are there video motion tests (to point camera at) to assess encoder settings, rates, etc? (currently working in OBS)
I want to measure the appearance quality of motion against a variety of OBS settings in a talking heads video.
What is a good way to test for motion in a video recording/capture running 15-60 minutes? ...
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50 views
Facebook Changes 1080P Video to 720P - Even though Facebook supports 1080P Quality videos
I can't find a single answer for this issue.
I have a Facebook Business page and want to upload a video that is in 1080P quality (Generated with Camtasia).
I upload it from my computer to my Facebook ...
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0answers
40 views
Kdenlive preserves original quality
Sometimes I use Kdenlive to cut videos because it is convenient. Something bothering me is that the application goes to the re-render process which has no point. I also have no idea what quality to ...
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8 views
Camtasia - How to edit a 936px screen capture, so it will fit 1080P format?
I'm trying to create an explainer video for a website, and I capture with Camtasia the website while Chrome is open. I chose to capture only Chrome inner window, without the buttons or the windows ...
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37 views
How to properly expose SLOG-3
I've read that middle grey should be exposed to 41% with Slog-3. Does the camera handle this exposure automatically (assuming EV comp is at 0 and auto ISO on)? I've also read that you should ...
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1answer
27 views
Why is ffmpeg producing a background?
I am a chemist and since a few weeks I am making short videos with ffmpeg by combining images, I am using the command below (for some reason without profile:v high, powerpoint crashes when I would ...
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1answer
285 views
How to preserve colorspace in ffmpeg
I have a x264 video with yuvj420p(pc, smpte170m) color space and i want to convert this video to x265 and reduce its file size. I have used this command ffmpeg -i input.mp4 -vcodec libx265 -crf 20 ...
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2answers
157 views
Is 8 Bit 4:2:0 chroma subsampling “good enough” for chroma key?
My school bought a Panasonic 4K camcorder (which I don't remember exactly which model) pointed at a green screen and this got me thinking.
If it's a HC-X1000 with it's tiny sized sensor and 8 Bit 4:2:...
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1answer
50 views
How do I improve sharpness of foliage and distant objects during video recording?
Lately I have tried recording some video using my old Canon. While I achieve decent results during macro shots and while filming human beings, I have noticed that foliage and distant objects in wide ...
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1answer
23 views
Making a YouTube video from powerpoint presentation file with embedded audio file
I have a power point type file (.odp in ubuntu linux) with embedded audio file in it for presentation. How can I make a good quality YouTube video from that? I have used kazam screen recorder for that....
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1answer
667 views
How to output high quality Zoom webinar video after editing with Premiere Pro?
I used Adobe Premiere Pro in editing a Zoom webinar video, I noticed that after editing and exporting it, the resulting file size of the output file appeared blurry compared to the original. The file ...
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24 views
Video coding : H264 is transcoded to H265. Result looks sharper despite lower bit rate. What is most likely explanation?
Video coding : H264 is transcoded to H265 using "slow" preset.
When playing the video files (using VLC), the result looks sharper despite lower bit rate (10 Mb/s --> ca 1.5 Mb/s) and ...
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1answer
96 views
Optimizing ffmpeg settings for high-entropy / HIGH-DETAIL ANIMATIONS towards uploading to youtube
Based on this older question, I am looking for a good "transfer video codec / compression" for rendering videos from BMPs and/or PNGs and uploading them to Youtube. I am dealing with a lot ...
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1answer
92 views
compare two video then cut the different
I have 2 video files with the same content, but coming from a different source. They have a slight difference in 'cut' and language dubbing, meaning one can be missing a shot compared to the other.
I ...
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1answer
27 views
Standard way for handling different resolutions when concatenating videos
I am building a small tool to take the short videos I record from different devices (e.g. iPhone, camcorder, etc), and concatenate them together chronologically. Everything is working up to the point ...
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1answer
897 views
Final cut pro export file size is huge (despite the small size of the initial video) - how can I shrink it?
I'm a complete novice at final cut. I have recorded a dnd game over zoom, it's a 2 hour video, the file saved from zoom is 756mb. I have edited it a bit (just minor stuff, add a couple of images, ...
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1answer
34 views
Decrease video size post-editing
I am using a video editing software to edit my videos for YouTube. The scenario is as below:
Input file size: 80mb.
Input type: webm.
My expectation after editing :
Video size: around 100mb.
(Any ...
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2answers
37 views
How to create a educational video by only using your voice and some photos
I would like to create some educational videos in which I will use only my voice and some photos/text headlines, notes etc. on my Mac computer. I am aiming at creating videos that are as much as ...
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1answer
22 views
How to make scenes look continuous?
So I shoot scenes with my cellphone (whether FHD or UHD). But other scenes I take them from clips I find online in a subscription service. If I try to make the video of contiguous scenes combining ...
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1answer
216 views
Camtasia Studio video files are too big
I've been trying to export an HD video from a screen recording created with Camtasia studio, but every rendering is returning videos with 80 mb/s of bitrate, I'm setting it to 65% quality, MP4. If I ...
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2answers
495 views
Does HEVC Support 16-Bit RGB Color Format?
I have some 3D Rendered Frames in 16-bit rgba Color Format.... I don't Wanna Lose Any Data... Because I have to Use those in editing.... But With Thousands of Frames in 4K File Size Matters.... So Why ...
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152 views
Scale Video, Without 'ffmpeg Scaler' converting colorspace from RGBA to YUV
I have a video in RGBA space contained in MPNG codec. Which is in 4K. I need to Convert that into a 1080p File... SO i Used this -
ffmpeg -i input.mkv -vcodec libx265 -vf scale=1920:1080 -sws_flags ...
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1answer
22 views
Artifact in animation / horizontal lines & double images
I'm using Handbrake, with the H.264 Codec (RF:16). It works pretty well with live action, but it produces odd results whenever I try to back up/encode animations. I've attached a screenshot:
Anything ...
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1answer
136 views
ffmpeg compress video in fast motion in high quality
I would like to compress a video and in the same time to be in fast motion, and this must have as a result a high quality fast motion video.
I tried to run this ffmpeg command which compress video ...
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11 views
Parole and MPlayer — colour difference
Intro
I am not sure if this is the right stack exchange sub forum to ask, but anyway...
I was watching a video and I noticed the colour difference when playing it with two different players (parole ...
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20 views
Picture degration when importing into FCP
When I Import from computer or download from camera into FCP program I am experiencing degration of the quality of film, and that includes analog, and digital 1080p down or up loads. What am I doing ...
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10 views
GoPro Hero8 TimeWarp shot in 1080p 60fps not uploading in HD on YouTube
I've shot a TimeWarp on my HERO8 Black. But I can't upload this particular video on YouTube in HD. YouTube does show 1080 60fps option, but the video is very pixеlated. The issue is in upload, because ...
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1answer
16 views
increasing sequence resolution in premier pro
I am editing footage with a resolution of 1228x690 in Premiere Pro 2020. When I tried to upload it to youtube, it automatically got bumped down to 480p, significantly lowering the quality. I tried to ...
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1answer
20 views
What pixel count is required for a near perfect digital copy of an old movie?
I stupidly posted this on Photography SE yesterday evening. I'm posting now in a more appropriate place.
I've been trying to get my hands on some of the very best digital versions of some classic ...
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13 views
Testing if VCR supports S-Video by image comparison. Is it correct?
When I capture a video from my VCR (a Sharp VC-M401SM) with an S-Video cable connected to a SCART adaptor (like the one shown in this post) I obtain a gray-scale image.
One possibility for this is ...
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1answer
21 views
Why do they deliberately (?) crush the quality for any video sent in by “normal people”?
Whenever they (TV stations, YouTube channels, etc.) show footage shot by "normal people", even current such, it always looks like they used a cheap consumer video camera from 1981 with a worn-out VHS ...
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1answer
114 views
Why does my VCR output a grayscale video if I use an S-Video cable?
I asked here if an S-Video cable could improve the output quality of my VCR (Sharp VC-M401SM). The answers were promising so I bought this S-Video cable (they send me a 2 m cable instead of 0.5 m).
...
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19 views
Save video with the exact quality of the source file
I have never had success in saving file with same quality after editing. Either it was much bigger, or quality was worse (square blocks etc).
I thought MediaInfo program would help, i used to check ...
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0answers
342 views
Optimal ffmpeg input and settings for 1080p Youtube video from individually rendered frames (PNG files)
There may be multiple questions in here, so please bear with me ...
I am experimenting with rendering animations (from scientific data / simulations). My code produces individual frames as PNGs - at ...
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0answers
15 views
Real-time video streaming question
I had been asked recently about sites which live-stream video content such as Twitch.
The more people who are connecting to the site at the same time, can this directly affect the quality or speed of ...
2
votes
1answer
98 views
Benefits of component/RGB connector (vs. S-video or composite) for VHS capture?
I know it's 2020 but I still have a few VHS tapes to digitise.
I do not expect the picture quality to be necessarily good enough to worry about this question. Still, I would hate to lose any tiny ...
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0answers
16 views
Movie quality after zooming in
My laptop screen is 1366x768p (WXGA, 16:9).
If the player (potplayer) zooms in on a 1080p movie (which shows upper and lower black bars) up to 125%, what effetive quality does the movie end up being?
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1answer
330 views
What format should I use to archive video issued from mini DV tapes?
I want to convert and archive movies captured with mini DV tapes. Videos are family movies.
Native format in dvvideo is huge (about 220 MB/min).
So I am willing to accept video compression but I ...
