I've written a small script (an expanded mod of a contribution of user koala85) that joins Fraps 4GB videos quickly and easily. It works by renaming videos with serial numbers*. It processes a whole folder at once. It's got some other neat features: you can set a meaningful name for each group of files ("take1", "replay" etc) you can generate scripts for Avidemux, Avisynth and Virtualdub. a BAT file is generated which restores the original names (in case you don't like the new names, it's easy to go back). Here's the link: Github.com/XyKyWyKy/FrapsJoin-(look for the "ZIP" button). (last updated Jan 27) * if you want to joint the files directly without opening another program, seeJoin multiple Fraps videos with FFmpeg 'concat:' Tutorial: Renaming the Files One way to launch it is with "Send To" (send any file in the folder) For each "group of videos" (that is, each continuous recording), you will see this: "Enter name for this group of videos, or hit Enter to accept the default:" NOTE any files not part of a group will not be renamed (they are usually false starts anyway; check each file and rename or delete it) Merging the Files Now the files are much easier to manage. What you do next depends on how you work. If you normally bring your Fraps files directly into a video editor, you can still do that; it will be a little easier now that you have meaningful file names. If you normally transcode before bringing the files into your editor, or if you don't use an editor and just encode directly to your finished movie, the best way to merge the files is with VirtualDub. V-Dub can merge all files in a group in 2 easy steps: open the first file of the group. It will be named "<something>-000.avi" open the next file with Append AVI Segment & Autodetect enabled, like so: You can now trim, crop, resize, color-correct and save to AVI with VirtualDub. If you prefer another encoder, such as StaxRip or WinFF, the best way to go is with an Avisynth script. FrapsJoin can automatically generate it for you. Review the README and INI file included with the project. If it's not clear, please post your questions here. Note Avisynth has trouble with 20+ files per group (see post #3). If for some reason you want to encode from the command line, you can do that. I explain how it's done using VirtualDub here, and using ffmpeg here. Thats it! Please give it a try and let me know what you think! From the README: Code: FrapsJoin: rename Fraps videos grouped by recording Requirements: Fraps (http://www.fraps.com/) Fraps is a program that captures Windows gameplay as AVI video files. For reasons of backward compatibility, the video files are limited to 4 GB in size, so a long recording will consist of many 4 GB movies that must be joined with a video editor. This is a source of annoyance for many people and has widely been regarded as a bad move. This little script attempts to mitigate the situation by renaming the videos, grouped by recording. All files which represent a continuous recording are given a common name, followed by a 3-digit serial number. The files can then be joined automatically by VirtualDub, and possibly other video editors. FrapsJoin can also generate *scripts* for three different application: Avidemux, Avisynth and Virtualdub. In addition, you can write your own postprocessing commands: * using Avisynth, you can do color correction, resizing etc; * using Virtualdub, you can do that too, plus you can set compression settings and save the final video if you wish. You can run the script using VirtualDub's command line interface (vdub.exe). Review the included INI file and samples for help & more options. INSTALL: Copy the FrapsJoin project files to any location, eg, "<My Documents>\FrapsJoin". Then choose one or more of the following ways to use the script: * SEND TO mode installation: right-click the script, "Copy"; in the Explorer navigation bar, type "shell:sendto", Enter; right-click in the Send To folder, "Paste Shortcut" To launch, right-click any AVI file in your Fraps folder, select "Send To", FrapsJoin * DRAG AND DROP MODE installation: right-click the script, "Copy"; right-click on the Desktop, "Paste Shortcut" To launch, drag any AVI file in your Fraps folder to the FrapsJoin shortcut * To launch in OPEN WITH mode, right click any AVI file, "Open With...", browse to FrapsJoin.bat; 'FrapsJoin' should be retained in your "Open With" menu for future use. USAGE: * Capture some video with Fraps... * Go to the capture folder in Windows Explorer * Launch FrapsJoin using one of the three ways described above; for each group of videos you will be prompted for a 'group name'; hit Enter to accept the default (default = first file name) * Open the first file (suffix "-00") in VirtualDub; then use File menu, "Append Avi Segment...", select the next file in the group (suffix "-01"), and check "Autodetect additional segments"; VirtualDub does the rest. SUPPORT: I am user 'raffriff' on frapsforum.com, an unofficial Fraps discussion board APPRECIATION: This is a modest update of a contribution by user koala85 on the above forum.