1/7/2024 0 Comments Divfix error not an avi filePrior to fixing the file, first edit its reserve copy. In the new file find and copypaste all data before the LIST/movi chunk into the corrupted file. So I'll describe the case where you can record another video file with the same audio and video codec settings. To find this shift, find the 1st video or audio block (usually identified as 00dc or 01wb), skip 12 bytes back where to put a 4-letter sequence (LIST and movi).Ĭase 5 is the hardest as it's a big structure where replacing 8 symbols isn't enough. Be sure to put these symbols in a special file place (not in the beginning) whose shift depends on the AVI recorder. Open the file in the editor and to fix error 4, type the 1st 4 bytes with RIFF, skip next 4 bytes and fill next 4 bytes with AVI and a space.įor error 3, do the same to replace RIFF and AVI with LIST and movi respectively. After failing AVI repair software, use manual processing with a HEX editor like WinHEX or Notepad with a relevant plugin. Such errors are fixable though not always. Fixing 5 is problematic due to the AVI file title containing info on what video and audio codecs were used in recording which is often unknown when downloading a new file. You can only try to repair it manually.Įrrors 3-5 may also happen in (torrent) downloading. The video is unreadable and hardly fixable. Damaged AVI title (MainAVIHeader) after the RIFF/AVI chunk If only the chunk size is misdefined, software will surely repair it. It's usually fixed only manually without a RIFF symbol ID. A video player can't read such a file - "unknown format". No RIFF/AVI chunk with the next title intact The video can't play without defining audio and video data start. It usually goes with a system failure in video recording with the given chunk just partially recorded. No LIST/movi chunk starting audio and video data In playback the video usually pauses, skips some fragments with unstable sound depending on video and audio damage scale. It usually happens in 2 cases - a torrent video wasn't fully downloaded (the loose part often fills with stuff like nulls) due to a HDD failure or a badly scratched optical disk with partially readable data. Damaged video and audio data in the LIST/movi chunk This commonest error is rather easily fixed by AVI repair software as remaining data make it simple to recover this chunk data. In playback it will result in no fast forwarding to the given video fragment. This usually happens in 2 cases - the file wasn't fully downloaded or the video recording software failed not to let it fully record the file. It's responsible for fast forwarding and contains info on each frame data start. Let's consider possible damage with type 1 (3) errors and its outcome in trying to play such a file. either ID change or an incorrect data block size.ĪVI fix software normally repairs type 1 & 3 errors due to the abundance of codecs and the problematicity of checking its data correctness. Absence or damage to any chunk title, i.e.In a way, an AVI file consists of 3 parts: a video title written in the LIST/hdrl chunk, the following video itself (a chunk sequence with video frame data and synchronized with it sound chunks - all inside the LIST/movi chunk) and the AVIIndex chunk below. So a standard AVI file structure looks as follows: Most other chunks contain only 1 ID and data size. 2 special chunks (RIFF and LIST) also contain an extra (user) ID to form a tree-like data structure. Each chunk consists of a 8-byte title - a 4-symbol ID like RIFF plus 4 bytes informing the software of the data block size inside the chunk. Recording AVI data needs the so-called RIFF format dividing the file into separate blocks (chunks). To understand why AVI plays problematically, let's consider its structure.
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