Articles about compress | UserComp.com

Best Way to Compress a Directory Tree Containing Archives and Files Selectively Extracted from Them

Eliminate data redundancy when backing up directories by selectively extracting specific files from source archives into a staging directory before compression.

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Compressing MP4 Files while Preserving Audio Track Names

Compress MP4 files with FFmpeg while preserving audio track names using the -map_metadata 0 flag.

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NTFS Compression: Reducing Size of a 16GB NTFS Compressed Folder to 8GB

Apply NTFS compression to a 16GB folder to reduce its size below 8GB for storage on smaller volumes.

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Best Program to Open a Massive tar.gz File with Many Subdirectories and Small Individual Files in Windows 10

Resolve Windows 10 extraction failures for massive tar.gz archives with many small files using 7-Zip or WinRAR.

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Why are the MD5 checksums different when tar-ing the same two packages?

Explains why tar archives have different MD5 checksums due to embedded metadata like timestamps and ownership, and how to create reproducible archives using normalization flags.

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Best Compression for GIMP Image: Still Images, Music Videos?

Resolve confusion by using JPEG or PNG for still images in GIMP, while recognizing that video compression requires external tools since GIMP cannot encode playable videos.

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Increase Keyframe Interval for Static Videos

Reduce file size of static videos by increasing the FFmpeg keyframe interval to minimize redundant data storage.

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Restore Windows default Zip file functionality

Fixes missing right-click zip options in Windows by re-registering the native zipfldr.dll shell extension via an elevated command prompt.

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Encoding Video with AV1 Compression: A Comparison with H.265

Compare AV1 and H.265 compression to reduce file sizes by 40-50% while maintaining visual quality for bandwidth-constrained environments.

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7-Zip Command Line: Files Not Included When Compressing Subfolders

Resolve missing files in 7-Zip archives by adding the -r switch to enable recursive compression of subfolders.

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Compress Files in Windows 11 Modern Context Menu

Resolve the need to archive files without third-party software by using Windows 11's native context menu to create standard zip archives.

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Unzip STDOUT Filenames with Field Delimiters: A Tech Support Guide

Extract ZIP archive contents to stdout and format field delimiters using awk or sed without creating temporary files.

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How to Extract .lzma Files from an Old App or Game?

Resolve inability to open .lzma files by installing 7-Zip for reliable decompression of legacy game assets and application data.

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Troubleshooting arXiv Downloads: Uncompressing 'arXiv-xxxx.xxxx.tar.gz'

Resolve the inability to open arXiv .tar.gz downloads by providing manual extraction steps for Windows, macOS, and Linux.

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How to Uncompress Files "user" in C Drive

Resolve NTFS compression issues on C drive user files by disabling the compress attribute via File Explorer properties to restore full access and compatibility.

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Splitting Zip Archives with WinRar vs 7-Zip: A Comparison

Resolve split archive creation issues in WinRAR and 7-Zip by understanding volume size limits, format compatibility, and dependency risks for reliable data transfer.

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Optimizing Compression: Avoiding Irrational Waste of Disk Space

Match compression algorithms to data types, using lossless formats for text and specialized codecs for media to prevent irrational disk space waste.

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Understanding Video Compression: A Beginner's Guide

Reduce video file sizes using H.265 compression and HandBrake while maintaining quality and ensuring device compatibility.

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Compressing Large Talk Video: Unsure about FFmpeg Settings, Seeking Alternatives

Resolve large talk video file sizes using FFmpeg CRF settings or HandBrake while preserving visual quality.

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Troubleshooting Zip Exclusion of Files/Folders in Shell Scripts

Resolve zip exclusion failures in shell scripts by using find to filter files before archiving, avoiding unreliable -x flag pattern matching.

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The Absolute Fastest Way to Zip Larger Files in 7zip

Use the Store method in 7-Zip to bypass CPU-intensive compression and achieve near-disk-speed archiving for large files.

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Compressing MP4 Videos with x265: Keeping Audio Tracks Intact

Resolve FFmpeg errors when compressing MP4s with x265 by using -c:a copy to preserve all audio tracks and metadata without re-encoding.

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Obtain High AAC Compression with FFmpeg without Intermediate OPUS File

Resolve WAV to AAC conversion errors by using the correct FFmpeg command with explicit encoder and bitrate flags.

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How to Shrink Multiple Videos into Specific Time using FFmpeg

Shrink multiple videos to a specific duration using FFmpeg filters without re-encoding.

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Backing up multiple computers with Macrium Reflect

Resolve Macrium Reflect nested image file errors by using separate .mrimg files for each computer on a central network share.

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Recommended Free Video Compressor Websites/Software for Reducing File Size

Reduce video file sizes for easier sharing and storage using free tools like HandBrake or FFmpeg while maintaining visual quality.

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Splitting Large gz Compressed Files into Smaller Compressed Files

Resolve invalid gzip headers when splitting large compressed files by decompressing and re-encoding data into valid standalone chunks.

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Optimizing 7z Command Line Options for Speed and Compression Ratio of Large .bak Files

Optimize 7z command line flags to balance speed and compression ratio for large .bak files.

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Optimizing Large File Compression on Linux: A Solution for Pegged Systems

Optimize large file compression on Linux to prevent high CPU usage and system unresponsiveness by using pigz or ionice.

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Quantify Compression Artifacts in Videos

Measure video compression artifacts using FFmpeg PSNR and SSIM filters to objectively evaluate visual quality degradation between original and encoded streams.

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How to Convert MOV to APNG: A Guide to Getting Compression to Work

Resolve large file sizes and invalid outputs when converting MOV to APNG by implementing FFmpeg's two-pass palette generation for optimal compression.

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How to Change Directory and Decompress Tarballs in Tech Support

Resolve missing file errors by navigating to the correct directory with cd before extracting tarballs using tar -xvf.

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Batch Compressing MP4 to GIF using FFmpeg: A Step-by-Step Guide

Automate MP4 to GIF conversion with FFmpeg batch scripts to ensure consistent compression and optimized file sizes.

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Compress each directory to its own Zip file from command line

Compress each directory into its own zip file without parent folder nesting using a shell loop on macOS.

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Error Compressing Zip File in Windows 11

Resolve Windows 11 zip compression FileNotFoundOrReadPermission errors by restarting Explorer, verifying NTFS permissions, and clearing the cache.

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NTFS Compression by File Extension

Compress files by extension on Windows using folder inheritance or the compact command to save disk space.

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How to Use WinRAR in Linux to Verify RAR Archive Files and Print Potential Corruption Errors to a Log File

Verify RAR archive integrity and log corruption errors using the unrar t command in Linux.

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Prevent Unzipping Nested Folders in Linux: A Solution for .gz Files

Flatten nested directories in .tar.gz archives by extracting to a temp folder and moving contents up one level.

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Identifying Deleted Installed Program After Uncompressing Downloads

Resolve confusion about missing programs after uncompressing archives by verifying installation integrity and checking for accidental directory overwrites.

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Using x265 params with ffmpeg doesn't impact file size or quality: A tech support perspective

Resolve ffmpeg x265 parameters not affecting file size by fixing conflicting flags, ensuring re-encoding, and correcting rate control settings.

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Need Solutions for Efficiently Storing & Accessing Large Files on Windows?

Solve large file storage inefficiency on Windows using NTFS compression, deduplication, and hash-based integrity verification.

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How to uncompress/compress an executable file?

Resolve executable size issues using UPX to compress or decompress binaries while maintaining functionality and managing antivirus detection risks.

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Achieving Good HEVC/CRF Rate Balance for Various Media Sizes and Formats

Optimize HEVC encoding quality and file size by selecting appropriate CRF values based on source complexity and resolution.

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Decreasing .gz Size Despite Text File Growth: An Explanation

Explains why appending repetitive or structured data to a text file can reduce the size of its gzip archive by lowering overall entropy.

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Understanding Compression Modes in ImageMagick: Lossless (-quality 100)

Resolve JPEG generational degradation by using ImageMagick -quality 100 to preserve pixel data fidelity during archival and editing workflows.

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Optimizing Large GIF Files with FFmpeg: Reducing Size, FPS, Color Palette

Reduce large GIF file sizes by lowering FPS and optimizing the color palette using FFmpeg to improve web performance.

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Effortlessly Add Files to Existing Compressed Archives in Windows

Add files to existing ZIP archives in Windows without extraction or re-compression using drag and drop or context menus.

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File Format Which Transparently Compresses Plain Text

Clarifies that no file format keeps compressed text readable without decompression and recommends using .gz, .bz2, or .xz for efficient storage.

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Troubleshooting Sudden Disconnection of Mounted Hard Drive During Zipping Files

Resolve sudden hard drive disconnections during file compression by checking cables, disabling USB selective suspend, and verifying SMART health to prevent data loss.

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Compressing Nearly Identical Large Files: A Tech Support Solution

Resolve high-entropy file compression failures by using delta compression to isolate differences and achieve significant size reduction.

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