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13 votes
Accepted

Using h264 in loseless mode brings small unexpected results

It's an artifact of the player, not the encoder. I used the command below to generate a RGB format capture in HuffYUV ffmpeg -f dshow -video_size 1920x1080 -framerate 30 -i video="screen-capture-...
Gyan's user avatar
  • 33.5k
9 votes

8bit vs 10bit vs 12bit

I can answer your first question. At the same bitrate and transcoding from an 8-bit source 10-bit HEVC is better than 8-bit HEVC, because it hardcodes dither. archived version of https://gist.github....
Lakis01's user avatar
  • 99
8 votes
Accepted

Does transcoding always mean quality loss?

Generally, H.264 and H.265 (as well as others like VP9) are lossy codecs, at least in their default settings with most encoders. This means that whenever you re-encode from one to another (or even in ...
slhck's user avatar
  • 1,035
8 votes
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Correct "stripes" in VHS record

Those are interlacing artifacts. They become visible when the motion in the video is faster than the field rate, so that when both fields are combined into a progressive scan image, the movement is ...
Michael Liebman's user avatar
6 votes

8bit vs 10bit vs 12bit

I've been running some tests lately (2H2020) concerning reducing the size of some high quality movies of my collection, just for PC to TV 1080p viewing, from 20-30mbps videos to 2-3mbps ones. To that ...
Th Econ's user avatar
  • 61
6 votes

8bit vs 10bit vs 12bit

In my experience (using handbrake) increasing the bit depth increases the file size but not by much. However, lowering the CRF is what causes significantly larger files. I encoded several times the ...
NicolasPP's user avatar
6 votes
Accepted

4:3 video has 720x480 resolution

There are 2 different things: The real width and height of frames (in pixels) – see the green part of the following picture. The displayed width and height (during the playback) – see the blue part ...
MarianD's user avatar
  • 1,572
5 votes

Why Camtasia always produce video with a low quality, even if I record in 1280p, for example?

The quality of the images you posted look completely normal to me for what you are doing. You're taking a screenshot and scaling it down. That means that anything drawn as a single pixel in the user ...
user1118321's user avatar
  • 2,156
5 votes

4:3 video has 720x480 resolution

525/60 digitized SD video according to Rec. 601 is indeed 720 pixels wide, 480 pixels high, including some blanking on the sides. Digital equivalent of 625/50 is 720x576. In both cases, frame aspect ...
Rusty Core's user avatar
4 votes

How to change framerate with HandBrake without side effects

FFMPEG is probably a better tool for the job, if you are prepared to deal with the command line. Install ffmpeg from the packages found here. These are all ready-built and should have all the included ...
stib's user avatar
  • 13.8k
4 votes

how to burn full hd movies (1080px720p) in DVD

DVD Video is limited to Standard Def, not High Def (HD). Blu-Ray overcomes that limitation. Alternatively you can use the DVD as a filesystem and play arbitrary media using a computer. But as a ...
Michael Tiemann's user avatar
4 votes

What is causing these horizontal lines moving vertically up the whiter portions of the video?

You seem to have a flickering light source that is out of sync with the camera's rolling shutter. Traditional lights You should first verify that you are filming in 60/30/24 fps in regions whose power ...
Duvrai's user avatar
  • 803
4 votes

What are these rectangular patterns in the frame?

Those are compression artifacts, where the original video has been compressed and has lost data. Block-based coding for quantisation leads to artifacts like this, as the information depth in the image ...
Dr Mayhem's user avatar
  • 2,311
4 votes
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In what aspect ratio shoud one record with a DSLR?

When you take a photo with a Modern camera "usually" it's 4/3, I know you can change the aspect ratio, but that's not my point. I assume, that the sensors of DSLR cameras are the same ratio, because ...
MoritzLost's user avatar
  • 5,442
4 votes
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Does using an S-Video output via a SCART connector improve the output quality of a VCR?

The answer is probably no, unless the SCART socket on your VCR is labeled specifically as "S-VIDEO". The fact that SCART connector has S-Video pins does not guarantee that your VCR provides ...
Michael Yutsis's user avatar
4 votes
Accepted

How do I improve sharpness of foliage and distant objects during video recording?

You are most likely observing Optical Aberration - see https://en.wikipedia.org/wiki/Optical_aberration and also https://en.wikipedia.org/wiki/Defocus_aberration. Haze is also likely a contributing ...
Peter Barton's user avatar
4 votes

How to preserve colorspace in ffmpeg

This command preserved the colorspace and also video didnt get darker after transcoding ffmpeg -i input.mp4 -color_primaries smpte170m -color_trc smpte170m -colorspace smpte170m -r 25 -crf 18 output....
mustafa candan's user avatar
4 votes

What is the video equivalent of vector graphics?

The whole premise of vector graphics is that there is a drawing engine in the output device that can interpret graphical commands and output shapes and fonts at the maximum resolution of its ...
user8356's user avatar
  • 171
3 votes
Accepted

Video production basics for a noob

I recommend you do a few things. Take an online course in video editing. You can either sign up for one at something like linda.com, or even just go to YouTube and search for video editing. There are ...
user1118321's user avatar
  • 2,156
3 votes
Accepted

Is 8k UHD or even 4k UHD actually necessary?

It all depends, of course, on what you are watching and where you are watching it. For instance, if you are showing something on a huge screen in a movie theater, you could definitely perceive a ...
daniel's user avatar
  • 121
3 votes
Accepted

How do you dramatically reduce the size of a video while keeping the quality as much as possible?

I'm not familiar with handbrake, but this is basically a math problem. First, you have to decide on a codec. One of the 'best' codecs in regards to quality/filesize-ratio as well as device-...
MoritzLost's user avatar
  • 5,442
3 votes

Caught between gamma and brightness

Looks like you are ready to enter the world of Lift-Gamma-Gain! These are the three controls that most colorists use to tame light and the sensors that record it. AJ Henderson is putting you on the ...
Michael Tiemann's user avatar
3 votes

Caught between gamma and brightness

You want to adjust a mix of gamma, brightness and contrast, or if available, simply use curves. Gamma impacts the way in which the output intensity corresponds to input intensity, but if you don't ...
AJ Henderson's user avatar
  • 19.4k
3 votes
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Should I shoot at 1080p if I intend to use 720p on the web?

There is no one right answer to this very general question, but here are the considerations. Some cameras (such as the Canon EOS DSLRs) have very naive line-skipping algorithms to decimate their ...
Michael Tiemann's user avatar
3 votes
Accepted

Usage of Target and Maximum Bitrate with the H264 Codec in Premiere Pro

Sondell spelled it out correctly. You use the Target to size your final output file, as VBR will be used. AME will then try to average as close as possible to "average out" to your target, yet the ...
McFlySoHigh's user avatar
  • 2,487
3 votes

Usage of Target and Maximum Bitrate with the H264 Codec in Premiere Pro

You seem to have a good grip on what these parameters are all about. The target bitrate is what the encoder tries to average throughout the video. The maximum bitrate is the roof for how high the ...
Sondelll's user avatar
  • 106
3 votes
Accepted

Is it worth re-encoding GoPro footage to H.265?

If your only goal is to save storage space and you never plan on editing or re-encoding the files again, you probably won't notice any change in quality. However, if you plan to edit or re-encode to ...
Michael Liebman's user avatar
3 votes
Accepted

How to get the Cinematic look

There are a few important things to consider: Lighting is perhaps the most important aspect to creating a filmic image. A lot of filmmakers like to use natural light such as Innaritu on The Revenant. ...
Alex's user avatar
  • 809
3 votes
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How can different deinterlacing algo make shots look more like movie or like video?

The complete answer to your question, which definitely includes motion blur, but also more than motion blur, is found in this article in The Accidental Scientist. To summarize: The human vision ...
Michael Tiemann's user avatar
3 votes
Accepted

How to improve quality of a WebCam video?

More Light You're seeing noise for two reasons. One is the tiny sensor of your webcam, but since you don't want to buy a new one right now, you can't do anything about that. However, the sensor size ...
MoritzLost's user avatar
  • 5,442

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