Questions tagged [video-quality]
The video-quality tag has no usage guidance.
252
questions
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1answer
8 views
Video with lower bitrate resulting from joining two video files
I had a 595mb .MP4 video (data rate: 510 kbps, Total bitrate 638 kbps). And I joined it with another .MP4 youtube video with a lower quality(only the end part).. The resulting video file has a data ...
0
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1answer
7 views
Using super resolution to improve video quality
Is there any publicly available code that uses deep learning to employ super-resolution techniques to improve the quality of video clips?
Or even any free online software?
Thanks.
0
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0answers
12 views
Compressed file video quality
there are many parameters in a (compressed) video file:
resolution, bitrate, codec, etc.
How can we check the overall quality of a video?
I know this would be a nasty question, simply due to the ...
0
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1answer
23 views
Comparing PSNR/SSIM of two videos with different fps/bit-depth
I have a 720p, 30 fps, 8-bit source video. I'm downscaling it to 480p, and I want to measure quality using PSNR/SSIM under two scenarios:
Keeping crf/speed settings same, I want to encode in 8-bit(...
0
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1answer
25 views
How to improve quality of .3gp video
I have a short (~1:13) clip in .3gp format that is effectively useless for my purposes as is, as it is 176x144, and my final output will be 1280x720.
My first try was After Effects' Distort>Detail ...
1
vote
1answer
44 views
FFmpeg does not preserve colors after resizing
I would like to resize a 4K mkv video to 1920×1080 with ffmpeg version 3.4.6-0ubuntu0.18.04.1 on Ubuntu 18.04. The original file has the following features:
Input #0, matroska,webm
encoder : ...
0
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1answer
25 views
How to avoid quality loss on yotube/fb when encoding images into video via FFMPEG
I created a video from a bunch of images off my camera using FFMPEG. I set it to 10fps. The output video looks fine. As soon as I upload it to Facebook or Youtube the quality is reduced significantly.
...
1
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0answers
8 views
RAW Format videos database
there is an online database for raw videos?
I wanted to download some videos in RAW Format for a university work and I can't find none.
The job I have to do is to encode the RAW video with different ...
0
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0answers
25 views
What is the maximum 2D video quality on Oculus Quest?
If you want to create a 2D video to display on an Oculus Quest VR Headset, what is the highest video resolution the Oculus Quest is capable of displaying?
720p or 1080p or 4K or what? Do the ...
0
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1answer
15 views
How to correct tbn for files with ffmpeg?
I have the following files (all .mp4). Whenever I want to concatenate them, the timestamps apparently get broken. Is there a way to correct those files with transcoding?
0
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1answer
15 views
How to prevent blur(?) footage at the recording stage?
My question comes in two parts. First, may I know if my assessment of the quality of the footage in this Youtube movie is correct in the first place.
Compare the frames around 2:07 of this movie:
...
1
vote
1answer
21 views
Fixing flickring old video
I have a bunch video that looks like it's flickering. The video started as Super8 (70s), was converted to VHS some years ago (90s?), and was recently converted to AVI. It looks something like this
...
3
votes
1answer
26 views
What is this colour blocking/ banding i'm seeing and can it be corrected for?
See the attached image to see the artifact I'm refering too. There appears to be blocks of oversaturated blue in the water. I'm fairly new to video editing, so I'm not sure which terms to use to ...
0
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2answers
32 views
Can ffmpeg downsample pixels perfectly?
I've tried all the swsflags options and figure the answer is no, but it can't hurt to ask just in case. For example: downsample from 1920x1080 to 960x540, then upsample back to 1080 using the ...
0
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0answers
12 views
video steganography frame data loss
In video steganography after embedding image with data and converting it back to video we sent it to receiver. While decryption the video is turned back to frames, but the embedded data is lost in ...
0
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0answers
27 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 '...
0
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1answer
28 views
Video Quality Measurement test tool
I need to measure streaming video from various different codecs and be able to tell which one is better.
What will be the best metrics to look for?
Is there a free tool that can help with this.
0
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0answers
10 views
Which camera is better for recording 'cinematic' videos and films?
I was looking for a DSLR 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 '...
1
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0answers
59 views
Is QTGMC still the best deinterlacer?
From reading various video forums, QTGMC seems to have a reputation as being one of the best tools for deinterlacing video (at least from an open-source perspective), with Yadif in second place.
Is ...
1
vote
1answer
23 views
Long distance, low light
I'm taking a video next month which will be in a dark conference room with a well lit stage. I need to set up a camera to video the presenter, but this year we have many more attendees, more tables, ...
-1
votes
1answer
24 views
How can I render a 720x480 clip to playback from YouTube in 1080p?
I'm working on Sony Vegas Pro 14 and I'm editing AMV. The anime clip's resolution that I'm editing is 720x480 - I saw the same clip edited on YouTube and on the settings it was showing that I can ...
0
votes
1answer
20 views
How to distribute multiple clips on the timeline, by Date and the time of the first one?
I have an existing project in Adobe Premiere 2017 and I would like to import multiple clips in it.
I already have the primary camera in sync with the Audio, and I would like to bring the secondary ...
1
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1answer
25 views
Using youtube-dl: Does adaptive bitrate (ABR) affect image quality?
I'm using youtube-dl and ffmpeg to get videos/frames of videos from the web. I was told that youtube (and others) use adaptive bitrate streaming, so depending on the network conditions of the user the ...
0
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0answers
48 views
Exported Lossless Video - Output File Was Lossy
I recorded some video-game footage in 320x200 and then upscaled it to 1920x1440 using ffmpeg (nearest-neighbor, lossless libx264).
Screenshots of the upscaled footage have pixel-perfect color ...
0
votes
1answer
36 views
avidemux shows better preview than vlc player
I shoot a video in nikon D3400 and tried to play in vlc and native player of ubuntu. But avidemux preview is much greater than any of these two. Any way to get the quality of that preview for my video....
1
vote
1answer
307 views
SDR to HDR (High Dynamic Range) Converter?
I've heard that it's possible to convert SDR videos to HDR and get reasonable results. Obviously, this isn't as good as having source HDR content, but I'm really curious and would like to try this ...
1
vote
1answer
54 views
How to prevent frame smoothing (i.e. get really sharp frame images) when making a video with ffmpeg?
I have been digging around here and on the ffmpeg site trying to find some commands to use to generate a movie from a set of images. The command I tried that gives me a video I can watch on my MacBook ...
0
votes
1answer
36 views
Why both videos are of same file size?
I am using ProMovie Recorder to record high quality videos using iPhone X, and I noticed a weird thing today.
Here's what I did:
I recorded a 4K 60fps video for 6 seconds (HEVC encoding).
I recorded ...
0
votes
4answers
59 views
Re-encoding Lossy formats with Lossless formats
I was re-encoding videos downloaded from YouTube with Lossless H.264 (using FFmpeg) because I'm experimenting with CRF=0.
I found that resulting videos are much bigger (1 gigabyte) than the original ...
1
vote
1answer
225 views
Export Frames of 10 BPC Video File with ffmpeg
I have several hundred 1080p 59.94fps 10-bit-per-channel (bpc) AVC-Intra Class 100 MXF encoded video files. I would like to extract the frames of this video file and export them to disk in a 16-bit ...
0
votes
1answer
51 views
How can I change/reduce the bitrate of AVI files using Adobe Premiere Pro CC or other tools?
I'm using Eprime and Experiment Builder which requires files in AVI format (AVI-XVid). The files are quite small already (various 2 second clips under 1mb), but are still too large which crash the ...
2
votes
1answer
27 views
Recording a two speaker event with large audience
We are doing regular events with two speakers on the floor who have their own presentations in parallel.
The event is a live hacking presentation, one speaker is the moderator and victim, the other ...
0
votes
1answer
102 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 ...
0
votes
1answer
13 views
Trying to improve choppy ipad screen capture
I'm trying to improve the choppy screen capture that I'm getting on my ipad.
The screen capture plays smoothly when viewed on the ipad itself, however it is choppy when played on my pc in vlc, and ...
1
vote
2answers
25 views
How to shoot my whole life from first POV?
I would like to shoot whole my life (24h, 365d etc) on video, like as through my eyes.
However I came to dead end trying to match recording times of modern action cameras, the battery change hustle, ...
0
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1answer
31 views
Objective video quality assessment
I'm trying to develop a tool that given a video (without a reference video), it can measure the quality. Basically given some thresholds, it assigns them a rating (I just need 4 classes 1-4). Since we ...
2
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0answers
454 views
Sony AVC vs. MAGIX AVC vs. MainConcept MPEG-2: what's the difference?
In VEGAS Pro 16.0 I'm given (at least) three options if I want to render a 1080p 30fps video for YouTube upload:
Sony AVC/MVC, template "Internet 1920x1080-30p"
Use this setting to create the ...
0
votes
1answer
562 views
FFmpeg No such filter error
I'm trying to use FFmpeg to create a new video with some frames repeated and black frames inserted inside. Here is my command:
#! /bin/sh
fn="Drifting with Cars.mp4"
#
ffmpeg -y -i "${fn}" -ss 00:00:...
0
votes
2answers
45 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 ...
0
votes
0answers
15 views
What is meant by Average Content Distance in Videos?
I'm reading a research paper on generating/synthesizing videos:
MoCoGAN: Decomposing Motion and Content for Video Generation
To evaluate the generated videos, they have used a metric called 'Average ...
1
vote
1answer
53 views
Sharpness of Canon 80d
I am trying to figure out the sharpness while shooting video with the Canon 80d. I find that the video kind of never appears to be in focus. If I take pictures of the same things the image quality and ...
1
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0answers
141 views
Corrupt frames: what to do
I’ve discovered some corrupt frames in the footage I am working on (.mxf format, shot on Sony PXW 70, I only have access to the files copied to the hard drive, and the broken frames are in the ...
1
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0answers
33 views
Before I throw away these massive uncompressed VHS digitizations, what kind of post processing can I do to improve them?
An uncompressed digitized VHS tape is like 60 gigs. Obviously way too big. I can compress it down using H.265 and get basically the same quality. But before I do that, is there any production ...
1
vote
1answer
169 views
Video quality degrades when uploading to YouTube with variable frame rate
So I use OBS (latest ver) to record my gameplay on Windows 10.
OBS settings are:
recording format: MP4
Recording quality: indistinguishable quality, large file size
Encoder: Software (x264 low CPU ...
-1
votes
1answer
26 views
What is the good video equveilent of 1300D?
I was surfing the net and I found this answer.
Bottom line with the canon rebel series cameras is that the video is
pulled from a low resolution capture of the chip which is normally
used for ...
0
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0answers
27 views
correct OpenShot settings to avoid the jitters
This video with spaceship building instructions was made with OpenShot. It is jittery. It was shot with a Samsung Galaxy S9. Here are the details I dug up from the source and final video:
| Thing ...
0
votes
1answer
46 views
Video Assets to test transcode quality
I was wondering if anyone knows from where I could get a few (short) video assets in high bitrate to check the quality output of a transcoder.
Some context: A few years ago I was working on a VOD ...
3
votes
2answers
143 views
4:3 video has 720x480 resolution
I was trying to do some video editing and encoding. I have a so-called SD video that should supposedly be in 4:3 aspect ratio. But instead of 640x480, it is 720x480. Interestingly, when I play it with ...
2
votes
1answer
27 views
Cheap or diy lighting for video production
I am new into video production. I am a maker, I do a lot of electronic projects and write the step by step guides about it in several places of internet. From now I would like to make video about my ...
1
vote
1answer
47 views
Do video containers influence the video quality?
https://en.wikipedia.org/wiki/Comparison_of_video_container_formats
Understanding containers and codecs
I'm just confused because the information above seems to indicate containers are simply chosen ...
