Questions tagged [video-quality]
The video-quality tag has no usage guidance.
240
questions
3
votes
0answers
19 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
votes
2answers
25 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
votes
0answers
11 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
votes
0answers
26 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
votes
1answer
24 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
votes
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 '...
0
votes
0answers
7 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
20 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
17 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
17 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
vote
1answer
15 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
votes
0answers
35 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
34 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....
0
votes
1answer
89 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
46 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
31 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
47 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
151 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
36 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
24 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
37 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
8 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
votes
1answer
29 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
votes
0answers
303 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
338 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
35 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
43 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
vote
0answers
126 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
vote
0answers
32 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
125 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
votes
0answers
23 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
42 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
95 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
26 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
46 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 ...
1
vote
1answer
294 views
How to combine and optimize ffmpeg filters to avoid encoding multiple times?
I never worked with ffmpeg before and I'm wondering which optimization I can take for my situation.
In a loop I have multiple input.mp4 files which I first convert one by one to have a common scale ...
4
votes
2answers
45 views
what kind of action cameras are good for 1080p video onboard a high moving object(more than 800kph)?
I'm working on a project that will have a camera onboard the object for FPV as it moves in the air at very high speeds. What kind of frame rates are good to transmit and/or record onboard the flight, ...
3
votes
1answer
43 views
H.265 disadvantages with video dimensions not multiple of 8
Are there any disadvantages (like worse image quality/more compression artefacts) when encoding a video in H.265 with dimensions that are not a multiple of 16 or 8, but instead a multiple of 4 or 2?
...
3
votes
3answers
82 views
Frame capture from videos: I-frame vs P-frames
I'm trying to capture various frames within a x264-encoded video files into png files (in python), and then compare the quality of them:
cap = cv2.VideoCapture(filename);
//get frame_number for ...
3
votes
1answer
66 views
How to fix video shot vertically on a smartphone?
I recently committed the crime of shooting video vertically, and now when played anywhere except on my phone the video renders sideways. What is the best method to rotate it (using PC software), ...
1
vote
1answer
27 views
How can I replicate C-LOG in a Canon DSLR?
I shoot almost all my video footage on Canon DSLRs (APS-C sensors if this makes any difference). I know that true C-LOG isn't available on DSLRs and I've seen many sites that claim to sell "C-LOG" ...
1
vote
2answers
214 views
Tips for shooting professional POV footage
I'm working on a video for a client and they are wanting to tell a story in video shot entirely in POV.
My initial thoughts were GoPro but i think it doesn't give the same quality as a DSLR. I'm ...
1
vote
1answer
157 views
FFMPEG LIBVMAF segmentation fault
I am trying to compare two videos using the libvmaf in ffmpeg 4.0. I have compiled and installed from source VMAF and FFMPEG and FFMPEG has built-in support for libvmaf. That's the ffmpeg ...
0
votes
3answers
24 views
Is it possible to make a movie with todays smart phone?
I have LGv30+ which is capable of recording video at 2k & 4k resolution and most smart phones available in market have capable of recording video in 2k resolution.
Is video shot with these ...
3
votes
2answers
313 views
How should I interpret the results from Netflix VMAF
I've been encoding some clips and then analyzing them with the VMAF tool from Netflix, but I don't know how to understand the results.
This is the overall mean section of one of my tests.
...
2
votes
1answer
778 views
What is 1200p HD?
I'm looking to purchase a borescope, and many of them state their video quality as "1200p" HD. Surprisingly, I've found nothing definitive as to what that means. The closest answer I could find was ...
-2
votes
2answers
90 views
What kind of camera do I need to record a video with the quality that is in the linked YouTube video? [closed]
Please provide camera models if possible. Not knowing this is driving me crazy haha
