아이폰 카메라 저장 형식 완벽 분석: HEIF/HEVC 및 JPEG를 다른 형식으로 변환하는 방법

By default, starting with iOS 11, iPhones save camera and selfie photos in the HEIF (High Efficiency Image Format) or HEIC (High Efficiency Image Container) format, which offers better compression and higher image quality compared to JPEG. 


Quick links:

Convert HEIF Image to PDF

Converting HEIF Images to JPEG: When and Why

Converting HEVC to H.264: When and Why

 

In iOS, the available camera formats on an iPhone are as follows:

  1. High Efficiency (HEVC): This is the default format and uses the HEVC (High Efficiency Video Coding) codec for video and HEIF (High Efficiency Image Format) for photos.

  2. Most Compatible: This format uses the H.264 codec for video and JPEG for photos. It is designed for compatibility with other devices that may not support HEVC or HEIF. 

    JPEG is a widely used image format that provides good image quality and compatibility with a wide range of devices and software programs. H.264 is a commonly used video codec that is supported by many devices and video editing software.

  3. ProRAW: This format allows you to capture photos in a RAW format that preserves more image data and provides more flexibility for editing.

You can change the camera format by going to the Camera settings on your iPhone and selecting "Formats". From there, you can choose which format you want to use for photos and videos.

Comparison between JPEG and HEIF in some key areas:

  1. Image Quality: HEIF generally provides better image quality than JPEG due to its ability to store more color information, higher bit depth, and improved compression algorithms. HEIF images can also contain HDR metadata, which allows for more dynamic range and more accurate color reproduction.

  2. File Size: HEIF files are generally smaller than JPEG files of the same resolution and quality, thanks to improved compression algorithms. This means you can store more photos on your iPhone or other device, or upload them more quickly to the cloud or social media.

  3. Compatibility: JPEG is a widely supported image format that can be opened and edited on virtually any device or software program. HEIF, on the other hand, is a newer format that may not be supported by some devices or software programs. However, this is becoming less of an issue as HEIF support becomes more widespread.

  4. Conversion: If you want to convert HEIF files to JPEG or another format, you'll need to use a conversion tool or software program. This can be a bit of a hassle, but it's relatively straightforward and there are many tools available. Converting JPEG files to other formats is generally easier, as JPEG is a widely supported format that can be easily opened and edited on many devices and software programs.

Comparison between H.264 and HEVC in some key areas:

  1. Compression Efficiency: HEVC is generally more efficient than H.264, meaning it can achieve the same level of image quality at a lower bit rate or file size. This means that you can store more videos on your device or upload them more quickly to the cloud or social media.

  2. Image Quality: HEVC provides better image quality than H.264 due to its ability to store more color information and higher bit depth. This means that you can capture videos with more detail, better color reproduction, and more accurate color grading.

  3. Compatibility: H.264 is a widely supported video format that can be played on virtually any device or software program. HEVC, on the other hand, is a newer format that may not be supported by some devices or software programs. However, HEVC support is becoming more widespread.

  4. Processing Power: HEVC requires more processing power than H.264 to encode and decode videos. This means that it may take longer to encode or decode HEVC videos on older or less powerful devices. However, this is becoming less of an issue as newer devices come equipped with more powerful processors.

  5. Conversion: If you want to convert HEVC videos to H.264 or another format, you'll need to use a conversion tool or software program. This can be a bit of a hassle, but it's relatively straightforward and there are many tools available. Converting H.264 videos to other formats is generally easier, as H.264 is a widely supported format that can be easily opened and edited on many devices and software programs.

Converting HEIF Images to PDF: When and Why

The most frequently used formats to convert HEIF images are JPEG and PNG. PNG is a lossless image format that is good for preserving image quality, but results in larger file sizes compared to JPEG.

HEIF (High Efficiency Image Format) is a relatively new image format that was introduced with iOS 11 in 2017. While it offers several advantages over other image formats, such as smaller file sizes and better image quality, it may not be compatible with all devices or software programs. In some cases, you may need to convert HEIF images to a more widely supported format, such as JPEG or PNG (a lossless image format that is good for preserving image quality, but results in larger file sizes compared to JPEG). However, there may also be situations where converting HEIF images to PDF could be a useful option. In this article, we'll explore some of the reasons why you might want to convert HEIF images to PDF.

  1. Creating a Multi-Page Document

One of the primary advantages of PDF (Portable Document Format) is that it can include multiple pages or images within a single file. This can be useful when creating documents that include images or graphics, such as reports, brochures, or presentations. If you have a series of HEIF images that you want to include in a multi-page document, converting them to PDF can make it easier to organize and share the document.

  1. Preserving Image Quality and Metadata

HEIF is designed to preserve high-quality image data, such as color depth and dynamic range. When you convert HEIF images to other formats, such as JPEG or PNG, you may lose some of this image data, resulting in lower image quality. However, when you convert HEIF images to PDF, you can preserve the image quality and metadata, such as the date and time the image was captured, the device used to capture the image, and any editing or processing that has been applied to the image.

  1. Archiving Images

If you have a collection of HEIF images that you want to archive for future reference, converting them to PDF can be a good option. PDF is a widely supported format that is likely to be readable on a variety of devices and software programs for many years to come. By converting your HEIF images to PDF, you can create a standardized, easy-to-access archive of your images that can be easily searched and organized.

  1. Collaborating with Others

If you need to share HEIF images with others, converting them to PDF can make it easier to collaborate and share feedback. PDF is a common file format that can be opened and viewed on many devices and software programs, without the need for specialized software or plugins. By converting your HEIF images to PDF, you can ensure that your collaborators can easily view and provide feedback on the images, without needing to install any additional software.

In conclusion, converting HEIF images to PDF can be a useful option in certain situations. Whether you're creating a multi-page document, preserving image quality and metadata, archiving images, or collaborating with others, converting HEIF images to PDF can make it easier to organize, share, and access your images. If you need to convert HEIF images to PDF, there are many tools and software programs available to help you do so quickly and easily.

You can convert HEIC to PDF online using various free online file conversion tools. Here's how to do it using the online converter tool CloudConvert:

  1. Open your web browser and go to the CloudConvert website (https://cloudconvert.com/heic-to-pdf).
  2. Click on the "Select Files" button to upload the HEIC file you want to convert.
  3. Choose the HEIC file you want to convert from your device or from cloud storage services like Google Drive, Dropbox, or OneDrive.
  4. Once the file is uploaded, select "PDF" from the "Convert to" dropdown menu.
  5. If needed, adjust the settings for the output PDF file.
  6. Click on the "Start Conversion" button to start the conversion process.
  7. Wait for the conversion process to complete. The time it takes to convert the HEIC file to PDF will depend on the size of the file and the speed of your internet connection.
  8. Once the conversion process is complete, click on the "Download" button to save the PDF file to your device or cloud storage.

Note that while online conversion tools are convenient, they may not always produce the best quality output. It's always a good idea to check the output PDF file after the conversion to ensure it looks the way you want it to.

Converting HEIF Images to JPEG: When and Why

HEIF (High Efficiency Image Format) has been adopted by many mobile devices due to its superior compression and image quality capabilities. However, some situations may arise where you need to convert your HEIF images to JPEG (Joint Photographic Experts Group) format. In this article, we'll explore when and why you might want to convert HEIF images to JPEG, as well as the tools and techniques you can use to make this conversion.

When to Convert HEIF Images to JPEG

Here are some situations where you might want to convert HEIF images to JPEG:

  1. Compatibility: While HEIF offers better image quality and smaller file sizes, not all devices and software support it. If you need to share your images with someone who doesn't have HEIF support, converting them to JPEG is a great way to ensure compatibility.

  2. Editing: Some photo editing software may not support HEIF. If you want to edit your HEIF images in these programs, converting them to JPEG first can make the process smoother.

  3. Printing: Some printers may not support HEIF. Converting your images to JPEG can ensure that they can be printed without issues.

Storage: If you need to store your images on a device or platform that doesn't support HEIF, converting them to JPEG can make them easier to manage and access.

If you have HEIF images on your iPhone or iPad and want to convert them to JPEG format, you can use the default Photos app. Here are the steps to follow:

      1. Open the "Photos" app on your iPhone or iPad.
      2. Navigate to the folder containing your HEIF images.
      3. Tap and hold on one of the HEIF images until a menu appears.
      4. Select "Share" from the menu.
      5. Tap on the other HEIF images you want move to the "Files"
      6. Tap on the "Save to Files" button at the bottom of the screen.
      7. Give the file a name and choose a location to save it.
      8. Tap "Save" to save the HEIF file.
      9. Open the "Files" app on your iPhone or iPad.
      10. Navigate to the folder containing your HEIF images..
      11. Tap on the other HEIF image you want convert to JPEG format
      12. Tap on the "Pencil" icon in the right bottom corner
      13. Tap on the File Name in the upper left corner
      14. Tap on "Export"
      15. Choose "JPEG"
      16. Choose Image Size
      17. Give a file name and tap "Done"

 

Note: If you do not see the 'Save as JPEG' option in the Share menu, your iOS device may not be running the latest version of iOS. Make sure to update your device to the latest version in order to use this feature.

 

Converting HEVC to H.264: When and Why

HEVC (High-Efficiency Video Coding) and H.264 are two popular video codecs used for compressing video files. However, HEVC can also be used to compress still images, providing higher quality and lower file sizes than H.264. So, why would someone want to convert HEVC images to H.264, and when is it necessary?

HEVC는 H.264의 대안으로 도입되었으며 더 낮은 비트레이트로 고품질 비디오를 생성할 수 있어 4K 및 HDR 콘텐츠에 이상적입니다. HEVC는 디코딩에 더 많은 처리 능력이 필요한 고급 압축 기술을 사용하여 이를 달성하며, 이는 일부 장치에서 문제가 될 수 있습니다.

반면에 H.264는 대부분의 장치와 브라우저에서 널리 지원되는 구형 코덱입니다. 대부분의 장치와 호환되므로 다른 사람들과 이미지 또는 비디오를 공유하는 데 안전한 선택입니다. 또한 H.264는 처리 능력이 덜 필요하므로 저사양 또는 구형 장치에 이상적입니다.

그렇다면 HEVC 이미지를 H.264로 변환하려는 경우는 언제일까요? 가장 일반적인 이유는 호환성 문제입니다. 대부분의 최신 장치는 HEVC를 지원하지만 일부 구형 장치는 HEVC 이미지 또는 비디오를 제대로 디코딩하지 못할 수 있습니다. 이 경우 HEVC 이미지를 H.264로 변환하면 문제를 해결할 수 있습니다.

HEVC 이미지를 H.264로 변환하는 또 다른 이유는 공유 목적입니다. HEVC는 더 높은 품질과 더 작은 파일 크기를 제공할 수 있지만 일부 플랫폼이나 소셜 미디어 앱에서는 지원되지 않을 수 있습니다. HEVC 이미지를 H.264로 변환하면 모든 플랫폼에서 이미지를 공유할 수 있습니다.

안타깝게도 기본 iOS 사진 앱은 HEVC 비디오를 H.264로 변환하는 옵션을 제공하지 않습니다. 그러나 타사 앱을 사용하여 iOS 장치에서 HEVC 비디오를 H.264로 변환할 수 있습니다.

CloudConvert를 사용하여 HEVC 비디오를 H.264 온라인으로 변환하는 단계는 다음과 같습니다.

  1. CloudConvert 웹사이트(https://cloudconvert.com/hevc-to-h264)로 이동하여 "파일 선택"을 클릭하여 HEVC 비디오 파일을 업로드합니다. 파일을 업로드 상자로 드래그 앤 드롭할 수도 있습니다.

  2. 파일이 업로드되면 드롭다운 메뉴에서 출력 형식으로 "H.264"를 선택합니다. 원하는 경우 출력 설정을 사용자 지정할 수도 있습니다.

  3. "변환 시작" 버튼을 클릭하여 변환 프로세스를 시작합니다.

  4. 변환이 완료될 때까지 기다립니다. 파일을 변환하는 데 걸리는 시간은 비디오의 크기와 인터넷 연결 속도에 따라 달라집니다.

  5. 변환이 완료되면 "다운로드" 버튼을 클릭하여 변환된 파일을 컴퓨터에 저장합니다.

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