Questions tagged [video-quality]
The video-quality tag has no usage guidance.
296
questions
1
vote
0answers
12 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 ...
0
votes
0answers
5 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 ...
0
votes
0answers
15 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 ...
2
votes
1answer
24 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 ...
1
vote
1answer
57 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 ...
1
vote
2answers
65 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:...
1
vote
1answer
49 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 ...
1
vote
1answer
18 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....
2
votes
1answer
274 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 ...
0
votes
0answers
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 ...
1
vote
1answer
67 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
votes
1answer
80 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 ...
1
vote
1answer
18 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
votes
1answer
428 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, ...
1
vote
1answer
31 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 ...
1
vote
2answers
35 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 ...
1
vote
1answer
21 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 ...
1
vote
1answer
143 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 ...
0
votes
2answers
289 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 ...
0
votes
0answers
98 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 ...
0
votes
1answer
13 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 ...
0
votes
1answer
70 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 ...
0
votes
0answers
10 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 ...
0
votes
0answers
18 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 ...
0
votes
0answers
7 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 pixŠµlated. The issue is in upload, because ...
0
votes
1answer
15 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 ...
0
votes
1answer
19 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 ...
1
vote
0answers
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 ...
0
votes
1answer
17 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 ...
0
votes
1answer
38 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).
...
0
votes
0answers
17 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 ...
0
votes
0answers
202 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 ...
0
votes
0answers
12 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 ...
1
vote
0answers
61 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 ...
0
votes
0answers
15 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?
0
votes
0answers
158 views
VMAF wrong results using SVT-AV1 encoder
I have a source video (source.mkv, which is a 25fps 1080p x264 encoded video), and I have reencoded it using SVT-AV1, like this:
ffmpeg -i source.mkv -nostdin -f rawvideo -pix_fmt yuv420p - | ...
0
votes
1answer
175 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 ...
2
votes
2answers
612 views
Does using an S-Video output via a SCART connector improve the output quality of a VCR?
This answer reports that in order not to lose quality when digitizing VHS one should use an S-Video cable.
My VCR is a Sharp VC-M401SM and does not have any S-Video output nor a composite output. ...
0
votes
1answer
27 views
50% higher bit rate vs 20% higher resolution
I have two videos: first one has 50% higher bit rate, second one has 20% higher resolution and slightly higher FPS. Which one will look better? I use a 1080p 72 inch 60 Hz screen at 10 feet distance.
...
0
votes
0answers
9 views
Why do my GH5 videos show artifacts only on PC playback?
I imported some Lumix GH5 videos to my PC. 1080p 25fps 420/8bit/LongGOP 100Mbps LPCM MOV files.
When I play the videos on my PC, some or many of the videos get artifacts and banding on any software ...
0
votes
0answers
138 views
Fix Lagging Video in Screencast Recording
I just made two screencast recordings on my computer. One using Screencastify and the other using Loom. Both times the video starts lagging shortly in the recording -- by lagging, I mean that ...
3
votes
1answer
56 views
Best practice for recording video calls
Iām a video producer isolated because of Covid19. Iām going to be spending a tonne of time recording guests over video calls.
So far Iāve been asking them to record audio locally, recording the ...
0
votes
0answers
16 views
How can I reduce mpeg file size without losing quality?
I want to download some free videos from a website. There are two option there: DVD Video *.m2v with 2Gb and H.264 Video *.m4v (.mp4) with 400Mb. The second one has low quality.
I want to know if I ...
0
votes
3answers
29 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?
1
vote
3answers
51 views
Prime or Zoom for Video (Micro Four Thirds)
I am looking to get a Blackmagic Pocket 4K. I know that you can do the EF conversion, and use Canon EF lenses, but I want to keep the cost down on my initial purchase.
I am looking at either getting ...
1
vote
1answer
112 views
poor quality video VHS camcorder: is there a fix?
I recently rescued an old Panasonic M40 VHS camcorder. All the electronics work absolutely fine. I bought a pack of VHS tapes and did a quick video test. The video quality is very bad with wobbly ...
0
votes
0answers
83 views
Color loss and grayish after downscaling using ffmpeg
Forgive me for I'm new to here, but I've been searching for solutions all the day, yet still puzzled by this problem. I try to downscale a 3840*2160 video to 1080p, and here's what I first did:
...
2
votes
1answer
181 views
iMovie 4K resolution to Keynote ā apparent loss of resolution
I exported a 4k resolution video from iMovie on my MacBook Pro. I imported it into Keynote in order to crop it. I noticed that upon exporting from Keynote, the resolution of the video was markedly ...
2
votes
1answer
54 views
Why I might get this high noise on Sony a7 III with Zeiss 24/70 f4 lens?
So I've tried to make a short New Year video and noticed, that I got noise at almost every level of ISO over 3000. And it is the kind of noise, that is impossible to work with.
Am I getting ...
1
vote
1answer
48 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 ...
