Questions tagged [video-quality]
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318
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3 views
Ways to faster video streaming on video apps
I'm studying short-form video delivery apps like Instagram and nowadays, TikTok, especially as it relates to faster video streaming and lower playout latency. We understand apps like Youtube or ...
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8 views
Pros and cons of Adaptive Video Streaming for short videos
In the standard adaptive streaming approach, like MPEG DASH, a video is available at multiple bitrates/quality levels called representations, with each representation video segmented into small chunks,...
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25 views
FFMPEG: "smart encoding" when join video clips
is it possible join some clips of h.264 (or h.265) without re-encoding, (or minumum re-encoding, only where clips touch themself?
Thanks!
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10 views
ffmpeg VBR 2 pass with concatination and normalization of pass log possible?
I have n number of arbitrary interlaced/non-interlaced videos being normalized through ffmpeg cmd N to a standard size, standard framerate, standard audio and standard visual quality for DVD burning. ...
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37 views
FFmpeg - Loss of video quality when using vf setpts
I created a screen recorder for iOS using FFmpeg. I concat the images into a video which is fine and the quality doesn't change much from the screenshots but when I use setpts to match the video to ...
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13 views
Tips for making choppy video less jarring
I produce a podcast that I also publish to YouTube. It's just two talking heads having an interview.
The recording of my most recent guest came through very badly. The audio sounds fine, but the ...
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17 views
What is the best format to digitalize Video8
I would like to digitalize some old Video8 tapes (e.g. SONY Video8 MP60 8 mm, single play 60 min.)
Unfortunately, I do not have the time to digitalize them by myself. I found a lot of providers online....
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22 views
360video - POV Learning Scenarios
I'm working for an educational facility for social workers and have a project to shoot 2 scenarios, of physical escalation with therapists and patients with cognitive disabilities, in POV.
The ...
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2answers
28 views
Improve quality of recorded screen
I tried a lot of different screen recording software but all of them can't record a video with the same quality I see on screen: looks like there is a unsharp mask, or something similar.
Now I'm using ...
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128 views
How to achieve the best quality with the least file size for 1 hour long videos
I want to achieve a 1 hour long video from 5 second animation clip with 1920x1080p res, with best quality with an acceptable file size because currently my videos are 100gb + after I render the 1 hour ...
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16 views
Increase video recording efficiency on smartphones
I am working on a smartphone app that records a video and uploads it to the cloud. Now I'm trying to find ways to increase the performance and quality of videos. Given sometimes the bandwidth of the ...
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23 views
Ensuring quality when capturing miniDV tapes for storage with QuickTime
I have a load of old miniDV tapes shot in Standard Definition, and a small consumer DV camera, connected (via Firewire) to an iMac (Big Sur) via a couple of adapters (Thunderbolt to FireWire).
I ...
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18 views
Can anyone tell explain these UTVideo settings to me?
I am on the lookout for an alternative Lagarith Lossless as some games do not really agree with Lagarith Lossless. I did some digging and learned of UTVideo on the internet but the thing is, UTVideo ...
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29 views
How to simulate different levels of lighting so as to capture real world behavior in a video?
I am trying to introduce various levels of lighting in the videos so as to simulate real-world behaviour. I am using the ffmpeg tool for this purpose.
So far I have tried changing the brightness to ...
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1answer
44 views
Export DCP from Adobe premier pro
Hey guys I’m struggling to export feature film 2hour 20 min long DCP from premier pro.
1.I already exported 422 Hq.
2.Made separate project with new sq.
3.Using Adobe encoder as well.
4.Every time my ...
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34 views
Re-rendering mp4 with much higher bitrate gives worse quality
So I am recording full playthroughs of video games at 40.000 kbps using OBS. I play through the games in multiple sessions, so I end up with multiple clips. I use the following settings to record my ...
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22 views
Modern video encoders/decoders keep producing compression artifacts: what is the (potential) reason?
Follow-up question for: Grime-like blocking compression artifacts on the decompressed video (H.264).
Context: while watching videos from time to time I continue notice the presence of compression ...
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1answer
36 views
How does scaling work in ffmpeg?
I am new to ffmpeg. I just want to know how I could keep the original scale of the video. The original size of the video is that its frame width is 1820 while its frame height is 720. The original ...
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28 views
Detection noise in video
I need to develop algorithm to detect noise in video. But I can't find any concreate algorithm description.
I found ffmpeg filter bitplane noise (https://ffmpeg.org/ffmpeg-filters.html#bitplanenoise). ...
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7 views
Improve video resolution when recording a game
I am thinking to record a game, and this game is horrible with low settings. The problem is: I can put the max settings, but only with 800x600 video resolution. How can I convert a video from 800x600 ...
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2answers
46 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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96 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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40 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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128 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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30 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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21 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
22 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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38 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
91 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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22 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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0answers
22 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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0answers
86 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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1answer
36 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 ...
2
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1answer
1k 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
356 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
53 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
27 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
1k 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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1answer
238 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 ...
0
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1answer
180 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
89 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 ...
0
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1answer
1k 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
42 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
38 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
39 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 ...
0
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1answer
354 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
944 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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247 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
43 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 ...
