Thursday, December 21, 2017

Best DeUHD Alternative

"The DeUHD application removes protection of Blu-ray 4K UHD automatically, without losing quality. This means that now you can keep safe and store your favorite movies on your computer in Blu-ray 4K UHD format, in the corresponding image quality 1:1..." This is how the DeUHD claims. However, is that really the case during the testing process? Are you curious about this software? Let's see how to use it.

How to Use DeUHD? Quick Guide

A. Installation

1. Choose language of installation.

2. Choose direction ,where you want to save program files.

3. Here you can choose where to place shortcuts of DeUHD.

4. Select additional tasks.

5. Here we are, you already installed DeUHD on your computer, now you can launch it, or just finish installation.

B. Launch and Activate

1). First you can launch DeUHD program with this icon on your desktop or shortcut menu.

2). Here is the window, where you can create an account to use trial version, order our product or activate your registered and purchased account.

3). Please enter your email to get password, we will send password in entered email.

4). If you are satisfied with our product, you can purchase it and activate. Find the DeUHD icon in the tray and push right button on the mouse, choose Activate.

5). Here is your registered email and password, then click Activate button to activate the DeUHD, or if you are not registered yet, you can enter your email and push Activate, we will send password to your email.

C. How to use DeUHD

1).At the beginning, after you already launched and activated DeUHD insert 4K Blu-ray UHD disk in optical drive (which optical drive use you can see at the top of this page)

2). Wait until DeUHD will scan the disc. DeUHD will automatically rip inserted disc.

3). Ripping process is successfully completed, now status of disc will show you it (pic.1) and add DeUHD folder into the disc (pic.2).

4). After that you can watch the movie on your computer or copy it to the Hard disk or to Image, just push right mouse button on the icon of DeUHD in tray.

5). Here is the window, where you can choose source of disc and final folder, where movie will be saved. And the last step is push “Rip” button, enjoy the movie!

Reference: DeUHD guide

Is DeUHD Perfect?

Is DeUHD perfect? I am afraid not. Let's see somes Q&A to get more details about this DeUHD.

Q: Can I have a trial before purchasing?

A: Yes, you can, but logged in with an account is required, three UHD disc and 8~10 minutes is decrypted only in the trial period.

Q: Can I use it without network connection?

A: No, network connection is required when starting up and accessing the server.

Q: Does it support the regular DVD/Blu-ray discs?

A: No, DeUHD supports the UHD discs only.

Q: Can I get refund for my purchased?

A: No, DeUHD is offered as 'try-before-you-buy'. You can try it first in order to evaluate the software and the functions before you actually make a purchase. If you purchased DeUHD and they will not refund your money if you are not satisfied with it.

Q: What can I do if the disc does not support yet?

A: Contact them at their contact page with the essential information of the disc: Region, country.

Q: How long does it take to support the new UHD discs?

A: New UHD discs will be supported weekly, keep your eyes for the UHD support list.

Q: Can I play my UHD movie using DeUHD?

A: DeUHD can remove the protections on the UHD discs, you can rip the disc to your hard disc. To play your movie you need use media player.

Q: Which operating systems support DeUHD?

A: DeUHD supports Windows Vista, 7, 8, 8.1, 10

To sum up, although DeUHD could backup UHD Blu-ray movies, but not all of them. What's more, the software sells at €199 (about $233) and doesn't decrypt regular Blu-ray discs, once you regret purchasing it and want your money back. Oh, come on, no way. And DeUHD even hasn't provide an equivalent version for Mac users. Is it perfect? I believe that you have alreadly had your answer.

Best DeUHD Alternative

For those people who want to find a good DeUHD alternative, you are lucky today. We highly recommend you - Pavtube ByteCopy | Mac for the following reasons below. (review)

Versatile Reasons to Choose Pavtube ByteCopy

  1. Powerful ability to bypass copy and region protection on a commercial 2D/3D Blu-ray/DVD disc. You also can import DVD folder, DVD IFO/ISO file, BD ISO image file.
  2. Massive copy options for you. You can 1:1 full disc copy Blu-ray/DVD movies with all the subtitle languages, audio tracks and chapter information well preserved, or only copy the main title without unwanted extras.
  3. Copy and convert Blu-ray/DVD to various video/audio formats for your target media player or devices, like H.264/H.265 MP4, MOV, AVI, WMV, MKV, and more.
  4. Moreover, this software allows you to lossless copy Blu-ray to Multi-track MKV format to help preserve Blu-ray 5.1 or 7.1 surround sound or other popular multi-track formats such as MP4, MKV, MOV for viewing on HD media players with multiple audio tracks and channels.
  5. Massive optimized device presets like iPhone X, iPhone 8, Samsung Galaxy Note series, Xbox One series, Apple TV series, Wii U, Adobe Affter Effects, Adobe Premiere, and more.
  6. This feature-rich software also work as a proferssional video editor. With it, you can trim BD/DVD movies length, add external subtitles to it, replace or mute audio, and more.

Quick Guide to Backup Your Blu-ray/DVD with Pavtube ByteCopy

Step 1. Load BD/DVD at will

Install the best Blu-ray ripper on PC. then open it, click the "Load from Disc" icon to import the Blu-ray Disc. You also can load the BDMV folder by choosing the "Load from folder" from the dropdown list of "File", of course, you also can choose to load the ISO images too.

load Blu-ray

Step 2. Choose output format according to your own needs

Click "Format" bar, you will see hundreds of video formats here. You can navigate to "Common Video" and select "H.264 High Porfile MP4".

Tip: Navigate to "Multi-track Video" > "Lossless/encoded Multi-track MKV(*.mkv)" for output. You can get lossless audio streams without transcoding. At the video setting windows, you also can choose the chapters, audio tracks, and subtitles.

Output lossless multi-track MKV format with 7.1 audio

Click the Setting button and adjust the video. Here you can rip Blu-ray with Dolby 5.1 tracks, open "Multi-task Settings" window, click "Audio" tab, check "Encode" to get encoded MKV files with Dolby Digital 5.1 audio saved. In this way, you also can rip Blu-ray with original DTS-HD Master audio track.

Encode Blu-ray to 5.1 audio track

Tip: Above step only appears when you choose output formats from "Multi-track Videos". If you'd like to select common video fomats, then click "Settings", you can adjust video parameters at will, like video resolution, video/audio bit rate, audio channels, and more.

mp4

Step 3. Start BD/DVD backup conversion

After all settings are done. Return back to main interface, and click convert, it will begin to copy your BD/DVD movies. Wait for a while, when it is over, click Open, and it will pop up a folder with generated files. Now you can transfer the covnerted movies to any devices for watching on the go.

Below there is a video to help you know more about this application. What are you waiting for? Go check.

Thursday, December 14, 2017

The Best Camera Phones of 2017

Smartphone is a convenient camera you always carry. And if you haven't upgraded it in a few years, you'll be pleasantly surprised by how much phone camera performance (particularly low-light image quality) has improved. Today, we will discuss the top 5 camera phone 2017 with all of you. Firstly, let's take a look at two heads of mobile phone industry - Apple & Samsung comparison to see which one comes out on top there.

iphone 8 vs note 8.

Phone makers always like to boast about specfications that are largely meaningless during the actual shoot. The latest trend in camera phones is the dual-lens main camera. Rear cameras have gotten simpler, and much better, in recent years. To make a long story shot, let us move to the most important part - featured camera phone reviews.

Featured Camera Phone Reviews:

No 1. Samsung Galaxy S8

s8

Samsung Galaxy S8 Guides: Convert All Unsupported Video to Galaxy S8

The Galaxy S8 has a 12-megapixel camera, just like the S7. But it's better. I took side-by-side images with the S7 and S8 in a variety of modes, and the S8's pictures are clearer and brighter, with more detail and less artifacting. While the S8 doesn't have dual main cameras, there's a software-based Selective Focus mode to create bokeh, and a pretty good Pro mode that includes Raw capture and manual shutter speed.

Low-light performance has taken a step up, too. Compared with the S7, shots taken in very low light show noticeably more detail on the S8. The S8 outpaces the Pixel in low light, too, with sharper detail, less artifacting, and slightly better colors.

Pros: Hand-friendly design. Gorgeous screen. Best processor and modem available.

Cons: Awkward fingerprint scanner placement. Average battery life.

 

No 2. iPhone 8 Plus

8 plus

iPhone 8 Plus Guides: Play Video on iPhone 8 | Best Video Players for iPhone

Compared with the iPhone 7 Plus, the iPhone 8 Plus isn't much of an improvement. Now, the 7 Plus is already very, very good—that's sort of the point here.  You have to go back to the Galaxy S7 generation, or the iPhone 6, to see a major jump in quality with the iPhone 8 Plus. The iPhone 8 Plus can also do Portrait Lighting, a filter that makes people look silhouetted on a dark background. I'm not a fan, but the feature already appears to be widely popular. If you want this feature, you need to get a Plus or an X, not the smaller iPhone 8.

Pros: Super-fast processor. Dual cameras. Wireless charging.

Cons: Not the fastest LTE connections. Still a relatively low-res screen with a big bezel for the price.

 

No 3. Google Pixel 2 XL

pixel 2 xl

Google Pixel 2 XL Guides: Paly Video on Pixel 2 XL | MKV to Google Pixel

In auto mode, the Pixel 2 XL takes the best photos of any camera we've tested this year. While the results are on par with the Galaxy S8 and Note 8 in good light, the Pixel 2 XL really shines in low light. It's able to gather a little more light, allowing it to raise shutter speeds and reduce blur, and its color balance is a bit truer than the S8/Note 8. While the Note 8 would judge some skin tones to be too bluish under streetlights, the Pixel made our test model look more human.

Pros: Excellent battery life. Terrific low-light camera performance. Elegant Google software. Great build.

Cons: No headphone jack or microSD card slot. Lacks Band 71 for expanded T-Mobile coverage. Screen quality has caused drama.

 

No 4. Samsung Galaxy Note 8

note 8

Samsung Note 8 Gudies: MKV to Samsung Note 8 | 4K to Samsung Note 8

You don't need to worry about the basics here. The Note 8's camera is, like the Galaxy S8 camera it's based on, fast, with terrific exposure judgement and excellent low-light performance. The question is, what does the 2x optical zoom get you? Compared with the S8, it offers a noticeable improvement in sharpness, clarity, and texture, and considerably less artifacting.

The Note 8 is the pinnacle of smartphone technology right now. There is no better processor, no better screen, no better sound quality, no better reception, and no better camera. It costs a lot of money, but you're getting what you pay for.

Pros: High-quality, waterproof build. Improved S Pen stylus. Dual cameras. Modem supports emerging networks.

Cons: Expensive. Too big to work with current Gear VR headset.

 

No 5. iPhone X

iphone x

iPhone X Guides: Play Video on iPhone X | Blu-ray to iPhone X

The iPhone X has very similar main cameras to the iPhone 8 and 8 Plus. The front-facing 7-megapixel camera is the iPhone X's most radical advancement. It uses a "dot projector" to throw invisible dots onto any object in front of it, and then uses an IR camera to map those dots, producing a live, 3D map of objects in space. Apple frames it as mostly for selfies, but this is also how to do augmented reality right; Qualcomm demonstrated a similar three-camera Spectra image module recently, which it said will come to Android phones in 2018. We suspect this 3D-mapping technology will come to the rear camera on the iPhone XI.

Pros: Updated design. Powerful processor. Excellent screen. First-of-its-kind augmented reality front camera. Animoji are really fun.

Cons: Very expensive. Apps need to be reprogrammed to take advantage of display. Not the fastest modem.

Best Video Converter For All Phones - Pavtube Video Converter Ultimate | For Mac

With the development of the smartphones, more and more phone manufacturers are attaching importance to front and rear cameras. You can choose and set the resolution of the video you want to shot independently. Most people have the dream of making Hollywood-style trailers by their own, therefore, video editing software is necessary. iMovie, Adobe Affter Effect, Adobe Premiere, Final Cut Pro, Sony Vega, etc are the most widely used by most movie makers.

But, during the process, you may meet many problems like these: the final render file is too large for uploading to Youtube or sharing with firends, or, it can't be supported by some media players. Many people are always looking for some solutions on some forums to solve video incompatibility issues when they can't import videos to the non-linear editing software, or failed to play output video on some devices. All those problems could be solved by this software.

Pavtube Video Converter Ultimate Interface

Key Featurtes Of Pavtube Video Converter Ultimate

  • Convert iPhone X, Samsung Note 8, iPhone 8 Plus recorded videos to H.264, MP4, MOV, MKV, AVI, and more for playback on anywhere.
  • Allows you to convert your Galaxy S8/Note 8, iPhone 8/X recorded video to Adobe Premiere Pro, After Effects, Window Movie Maker, Window DVD Maker, etc supported video formats for further editing.
  • If you are familiar with video format, container and codec, you can directly choose video format, then adjust the video and audio bitrate, frame rate, resolution, channel and more parameters to make the outputed video more fit in your video players on your Samsung Galaxy S8/Note 8, Google Pixel 2 XL, iPhone 8/X. 
  • It grants you to transcode Galaxy S8/Note 8, iPhone 8/X recorded video to Facebook, Youtube, Vimeo, Daily Motion or other vdieo sharing web supported vdieo formats. As everyone knows, most vdieo sharing website have limits on their uploaded vdieo.With above feature, you even can compress 4K to 1080p video or upscale lower resolution video to higher resolution video, or cut video length.
  • Convert iPhone X, Samsung Note 8, iPhone 8 Plus recorded videos to TVs, Macbook, Windows Computers, etc optimized video formats, so that you are free to play the videos on them without any obstacles.
  • Allows you to convert your Galaxy S8/Note 8, iPhone 8/X recorded video to Adobe Premiere Pro, After Effects, Window Movie Maker, Window DVD Maker, etc supported video formats for further editing.
  • Moreover, this program supports you to import SD/HD/4K, 3D/2D Blu-ray, Blu-ray Folder, Blu-ray ISO image file, DVD movies, DVD folder, DVD IFO file, DVD ISO image file and output H.264, MP4, MOV, MKV, etc for playback on your Samsung Galaxy S8/Note 8, Google Pixel 2 XL, iPhone 8/X.
  • Simple video ediitng functions for you to perfect your videos including: Trimming, Cropping, Adding text/image watermark, Inserting external subtitles, Adding video effects, more features here for you.

Thursday, December 7, 2017

Best Canon Footage Converter To Convert AVCHD To MP4 MKV MOV

For half a century, Canon, one of the big names in photography world, remains an important force in SLRS, cameras, cameras and multi-function devices. Canon digital camera/camera provides clear image quality and performance. Most Canon camcoders could record AVCHD files today, so what is AVCHD file?

AVCHD - a  variant of the H.264 format, this is a high definition video file format found on most Canon, Sony, and Panasonic HD camcorders (other manufacturers support it as well). AVCHD camcorders can capture very high-quality video and they can also burn HD video to a standard DVD disc, which can be played back on a Blu-ray disc player.

You can use your Canon camcoder on different occassion, for example, you can shoot a 4k footage on a wedding, after that, you will find this is only few minutes of video have a dozen or even more than 20GB. The question left is that how to play, edit, and share the footage without any obstacle. It is not easy to play such kind of video, and it is so big. If your computer is not powerful enough, all those are absolute nonsense. So today, this article aims to help you to play and edit Canon AVCHD video at will without any video formats imcompatibility issue or other issues.

But before we get to start, one thing you have to prepare - a powerful third-part software - Pavtube Video Converter Ultimate/for Mac. This program could convert the video recorded from Canon HD camcorder/camera AVCHD to H.264, MP4, MOV, AVI, MPEG, FLV, WMV etc. Moreover, for video editors, this program offers you dozens of optimized video formats for FCP X, iMovie, FCE, Avid Media Composer, Adobe Premiere Pro, After Effects, Kdenlive, Apple Aperture 3, DaVinci Resolve, iPhoto, etc.

Moreover, you can adjust the video and audio bitrate, frame rate, resolution, channel and more parameters to make the outputed video more fit in your video player and multimedia devices. More functions in this guide for you to make reference.

Below, we will go with Windows verison to show you how to work with Canon Video Converter to seamlessly convert, edit and transfer Canon footages. Its Mac version has the same operating procedures.

Step By Step To Convert Canon Footage For Playback & Edit & Share

Step 1: Import Canon AVCHD video sources

Free download this perfect Canon video converter on Windows, and then run it & click add video button to import Canon HD video footage to program or directly drag the files to main interface.

load canon source

Step 2: Choose output format

This part is open, and depends on your heart. If you want to do further video edit, you can navigate to "Adobe Premiere" or other category as you like. Below are Windows & Mac version screenshot.

Windows Version

ultimate premiere

Mac Version

mac version

Tips: From the screenshot above, you can see that this program offers you hundreds of optimized device presets, like iPhone, Samsung, Game console, TVs, and more. If you have selected one, then you don't need do any change.

Step 3: Adjust output profile settings at will

Can you see the "Settings" on the UI, click it and you will entre a window, here you can do any change to your Canon video. For example, you can lower video bit rate to get smaller video size. Normally, video size is based more on bit rate than resolution(pix).

adjust settings

Step 4: Start Canon Video Conversion Process

After you have done all setting, click "Convert" red button on the main interface. Wait for a while, then cilck open, it will pop up a folder with the converted file. By the way, this software supports you to import several files at a time.

Thursday, November 30, 2017

Best DJI Spark Video Converter for Mac

More and more people are attracted to DJI drones which make our flying dreams to come ture. DJI has unveiled the Spark drone for a few month, the smallest model the popular Chinese dronemaker has released to date. DJI claims that Spark's camera can shoot 12 megapixel photos and record 1080p high-def videos at 30fps and 24Mbps. Although the footage from DJI Spark has lower resolution and bitrate/ frame rate than other DJI drones, which support 4K capture and higher video parameters, playing and editing HD, Full HD videos from Spark is still a difficult task. Why? Keep reading!

For Mac users, it will be so cool to turn the Spark video clips into more attractive ones for sharing or burning to DVD with the help of iMovie, Final Cut Pro X, or other non-linear editing software. As we all know, MP4 is the most common video format in this world, however it isn't friendly with non-linear eiditng software.

What's more, HD, Full HD videos from Spark is less compressed or uncompressed, that will end up with a large file size which will occupy a lot of space when storing them on your smartphone or tablet. Also, all video sharing websites like Vimeo, YouTube have limits for uploading large videos. These are the reasons why I say playing and editing HD, Full HD videos from Spark is a difficult task. To solve those issues above, you need a third-part assistant - best Spark video converter.

Find the Best Spark Video Converter for Mac

Pavtube iMedia Converter for Mac | Windows is highly recommend to you, which can solve these issues above and for all by transcoding Spark video to what you need. Following are the key features for you to know this software in depth.

  • Encode Spark Video to any video and audio format like AVI, WMV, MP4, MKV, MOV, M4V, VOB, DV, ASF, MPG, MP3, M4A, AAC, etc. for palyback on various portable device and media player, such as iPhone, iPad, Samsung smartphone, Windows Media Player, QuickTime media player, etc.
  • To acquire perfect playback effect on target smartphones, tablets, media players, etc. you can freely adjust parameters settings including video codes, video size, bitrate, frame rate, etc.
  • Convert 1080p Spark Video to 720p for smaller video size, then you can save more space for your smartphone or tablet when watching on them.
  • Various practical editing functions, such as trim, split, crop, add watermark and so on. For example, if your want to remove a few clips in your Spark video, you can use "trim" option to remove unwanted part quickly. Or merging several Spark video clips into one video is also very cool.
  • Able to read footage from Spark, Canon, Nikon, Sony, Pansonic, etc. And then output decent video format for further editing in Nonlinear Editor, including FCP, iMovie, Premiere Pro, etc.
  • Free lifetime technical support and upgrade service are available for every user. You can read this guide to get more details.

Below are the specific steps to show you how to encode Spark videos with this software. It Windows version has the same operating procedures.

How to Encode Spark Videos with the best Spark Video Converter on Mac?

Step 1. Load Spark Video files

Launch this best Video converter on your Mac. Click "Add Video" or directly drag and drop the Spark video file into the software.This Mac version software also supports batch conversion to encode your Spark Videos.

load video

Step 2. Select output format

Click on "Format" bar, and you can freely select output format from its drop-down list. You can choose H.264 MP4 from "Common Video" or "HD Video" for common portable device and media players. If your media player or devices support HEVC codec, convert Spark video to H.265 MP4 will also be available. For further editing in NLE system, just go to "Final Cut Pro" "Avid Media Composer" or "iMovie and Final Cut Express" categories to choose the video formats you need.

This Spark video converter also allows you to choose format device. For example, if you want to convert videos to iPhone, you can simply go to "iPhone" category to select specific iPhone model.

h.265 mp4

Step 3: Customize Spark Videos

As we mentioned above, this Spark Video Converter provides a built-in video editor. You are allowed to adjust video and audio parameters if you are not satisfied with the default settings. Presets like size, bitrate, frame rate, audio channels, etc. can be customized in your own way.

profile settings

Click "Edit" button on the main interface to open the "Video Editor" window. Here, you can trim, crop, add subtitle, add watermark, replace/mute audio, adjust aspect ratio, adjust volume, rotate, flip, add special effect to video.

edit

Step 4: Start encoding Spark Videos

Click "Convert" button to start converting Spark video. When the conversion process is finished, you can locate the generated video files in output folder. Then you can play, upload and share the Spark Videos wherever you like.

Thursday, November 23, 2017

Best 4k Video Editing Applications With Ultimate Assistant

With the development of 4k technology, more and more people prefer more expuisite qicture and higher visual enjoyment. Almost everyone dreams to make the Hollywood-style trailers and gets a lot of fans. During this process, a professional 4k video editor is necessary which will help you a lot. In this post, you will see top 5 4k video editing software, some for Mac, some for Windows, hope you will find the best one you desire.

NO. 1 Adobe Premiere Pro CC

Adobe Premiere Pro deserves its place as the industry standard video editing software, thanks to its familiar nonlinear editing interface, unmatched ecosystem of tools, and powerful set of capabilities. Since my last look at the massive application, it has added support for 360 VR content, 4K (and higher) and HDR video, and the Lumetri Color tool. It has also added class-leading collaboration capabilities. All of this makes Premiere well worthy of an ditors' Choice award for professional-level video-editing software.

NO. 2 Adobe Effects CC

If you're a movie maker and you need to create some special effects, chances are you’re probably already thinking of Adobe’s After Effects. It’s been available for 24 years and under the stewardship of Adobe since 1995. Just like Premiere, it is a powerhouse for videographers and often the only app they need to transform shots, apply effects and create dazzling titles.

NO. 3 Apple Final Cut Pro X

Apple Final Cut Pro X comes as a well known professoinal level video editing software for Mac users, treads a fine line between consumers who want more power for their video-editing projects than iMovie offers and professionals who create content for movies and TV. Used extensively in the professional movie industry, as well as amongst amateurs, the latest version comes with full support for full resolution 4K ProRes in multiple streams.

NO. 4 iMovie

iMovie has a beautiful simple interface, it offers color matching for consistent movie looks, classy themes, and great chroma-keying tool. Unlike professional video editor, in the name of simplicity, some useful controls are missing. It lacks multi-cam or motion tracking capabilities. Apple iMovie has, however, added support for 4K video, and more sharing options. And it still maintains some of the best storyboard-based movie making tools for novices—Trailers and Movies—along with excellent green-screen and soundtrack capabilities.

NO. 5 CyberLink PowerDirector 16 Ultra

This program helps beginners learn the basics of video editing without sacrificing the needs of more advanced users. This latest edition of PowerDirector supports 64 bit processors for faster editing, and of course, new support for 4K resolution videos. At under $100, CyberLink PowerDirector 16 Ultra comes amazingly close to being as advanced and capable as software that is priced multiple times more than it; making it an ideal choice for the budget conscious video editing enthusiast.

Ultimate 4k Video Assistant for 4K Video Editor - Pavtube Video Converter Ultimate | Mac

No matter which 4k video editor you choose, I still recommend you this 4k video editor assistant. Why? Okey, let me ask you some questions. Did you find the final render file size is very large, especially 4k files, although you have adjusted the basic video settings? Is it a little difficult to upload those 4k video to massive video sharing website, like Youtube, cause most of them has limitation to uploaded files? Have you meet video formats incompatibility issues when you fail to import into those video editing software, or you fail to upload the output file to some communities?

I believe that there are many other issues that I don't mention above, but don't mind, all those are nothing to Pavtube Video Converter Ultimate. This video converter offers you hundreds video format like MOV, MKV, WMV, AVI, H.264/H.265 MP4, etc, so you don't have to worry about video format incompatibility anymore. Moreover, you can add the final 4k trailer to this application and output massive optimized device presets for your target device. If you are puzzled about large video size, with it, you can lower the bit rate to get smaller video file without video quality loss. Furthermore, this video also support you simple video editing features, including trimming, cropping, adding text/image watermark, inserting external subtitles, more functions in this guide.