iDECLONE REVIEW - THE BEST DUPLICATE/SIMILAR MOVIE FINDER AND CLEANER SOFTWARE |
Discover and remove all duplicates cluttering your hard disk or mobile phone: Music and movies, Photos and pictures, Office documents, e-Books... or any other kind of clones!
Nowadays most people use Netflix or similar streaming services for watching movies, but many old hands have sizeable older movie collections, brilliant classics you won't find streamed anywhere. No matter how you have amassed the movies, whether from old DVDs or downloaded, chances are you have several copies of many of those classic movies. If you think that the average movie has a file size over 1GB, you don't need many of those duplicates to choke up your hard disks. To tidy up your collection, save space and keep the best quality version of each movie, you need a duplicate detector tool, but how do you pick one? There are 102 alternatives to i-DeClone for Windows 7/10/11, both free and paid. This review will help you choose the best duplicate movie cleaner software.
Clearly the author is biased, but this review is objective. The most popular shareware programs that claim to deal with near-duplicate movie files are included, and their performance is measured
on a fixed set of video files (movie collection library). We believe
that the data are representative, almost scientific :) You are welcome
to try your own movie library for duplicates — you should find the same
results more or less, relatively speaking.
How do you discover near-duplicate video?The technology behind duplicate file software is quite simple, almost trivial. You just examine all the files in your hard disk byte-for-byte, and discover all 100% identical files. This is fast and safe, but will not work very well for your movie file collection. Video is encoded compressed in various formats (along with its audio streams), in containers such as Matroska MKV, the old Audio Video Interleave (AVI) file, MPEG-4 (think MP3 but for video) and many more. Each container allows multiple resolutions (720p, FullHD, UHD etc) for increased movie quality (and byte size!). So a movie that you or me would instantly recognize, is hard to tell looking at the raw bytes stored in the file. Recognizing movies calls for specialized software that can decompress and extract the video and audio streams from the movie file, then use a number of algorithms to compare them and discover similar movies. Some programs compare a succession of thumbnails (frames) using similar image detection methods, others focus on the soundtrack and use audio fingerprints to align and compare the audio streams. Such visual or audio algorithms can be used to compare movies, and see through differences in video resolutions, frame rates and dimensions, soundtrack loudness etc, to identify visually identical files — as opposed to binary-identical. Some simpler duplicate files software ignore the audio/video content and try to find similar movies using file attributes like the name and duration. This is next to impossible for movies, where there is no universally accepted tagging system (like ID3 tags for MP3 music). Take for instance the following 2 video files. It is the same movie, but the file sizes and durations vary slightly, one is widescreen HD and the other 720p — still they represent the same movie! What we need therefore is software that can find movie content duplicates, allowing for differences in HD resolution and file formats (WMV,AVI,MOV,ASX,MKV,MP4,ASF,MTS,TTS...). Media files need a computer program that can understand the video, not the raw bytes stored in them. The bytes may differ, even the picture quality itself slightly, but video-aware software will detect the similarity, almost as a human movie watcher would. Most of the aforementioned 102 duplicate cleaners are not "movie savvy". I have narrowed it down to just six (6) computer programs (for Windows 7/10/11) that analyze the movies for similarity and will find video duplicates, which in alphabetical order are:
I will also consider another popular program called Auslogics duplicate file finder, just to show you how "naive" duplicate finders are not up to the task of discovering duplicate movies. Some of these programs are free or open source, and some shareware with free trial, so you would expect a decent quality in departments such as:
Before we begin the Video Clone Olympics, here's a table summarizing the main contenders for the title of Best duplicate video detective Windows software. Some are specialized for similar movies, others can handle also similar music and images. 64-bit programs are capable of handling huge media collections (32-bit programs are limited to 2GB memory)
Information correct as of 18-Feb-2023 Typical workflow for finding and removing duplicate filesThe workflow of all duplicate file removers more or less comprises 5 basic steps:
|
< Προηγούμενο | Επόμενο > |
---|