![]() ![]() Finally, the earliest tool OS X users had for mp3-in-avi was something called AVI2MOV, which was from and no longer seems to exist. offers the Divx Doctor 2, which converts the AVI to a MOV, in which the mp3 audio is in a format recognizable to QuickTime, and the video is (if you choose) just a reference to the original AVI file. This is a great advance for Mac divx users, as you are about to see. 's codec (since version 5.0.6) comes with it's own AVI parser, that overrides QuickTime's built-in one. Audio in divx is often mp3, but since the official spec of AVI does not allow for Variable Bit-Rate (VBR) audio (which is all people use), quicktime needs some help playing it. 3ivx and DivX can play this content, but for the codec to agree to do so you have to install the XviD delegate component. There is also an open source MPEG-4 codec similar to divx called Xvid. In OS 9 you can't play MS-MPEG4v1, but you can play MS-MPEG4v2 files with the "wmaaudio" codec. They are also based on ffmpeg, but I'm not sure which if any of the other ffmpeg-based solutions recognizes MSMPEG4v1 or v2. For these you can play in OS X by searching versiontracker for MS-MPEG4v1 and MS-MPEG4v2 codecs. You might still find MS-MPEG4v1 or v2 files around. Divx evolved from Microsoft's attempt at MPEG4, and the first divx standard was MS-MPEG4v(ersion)3. Now, those 3 choices are all for standard divx files. Based on this software, there is a QuickTime component here, there is a standalone player called VidoeLan Client, and another player called Mplayer (the interface of which I dislike, but it usually has the best codec compatiblity of any of the options).Ĭhoices (1) and (2) for divx playback have something called Post-Filters, which mean that if your computer is about 500 mhz or faster, they will look better than the choice (3) offerings, which are all based on the same code. FFmpeg is a unix program that plays almost every kind of mpeg-video found on the net. 3ivx is different than divx, but confusingly enough, 3ivx D4 also decodes divx. (2) You can go to and download the 3ivx D4 codec. It tells you to restart (I believe), but you only need to restart quicktime (in OS X). There are three versions that are NOT backwards compatible (that means download them all while you're there), 3.2, 4.1 and 5.0, the last is the most common.įor Divx, you can choose between 3 main choices: (1) go to and download the mac codec. You can search for the OS 9 quicktime codecs at. Simply remove the extension from /Library/Quicktime or ~/Library/Quicktime in OS X or from /System Folder/Extensions/Quicktime Extensions in OS 9 and restart quicktime.įor Indeo, you will need to play it in Classic, as no OS X Indeo codec exists, or will likely ever exist. If you have an MPEG-4 codec installed, it may insert its moniker instead of the FourCC, in the Quicktime Info window. For other codecs, this is highly unrecommended. You can change them in a hex editor, too, but that is only necessary for the MSMPEG4v1 codec, which requires you change the code to MP41. They will be in the first 20 lines or so. ![]() You can also open the file in a hex editor and search for these codes (called FourCC or FourCharacterCode codes). XVID means XviD, which is a different product than DivX, but as far as the user is concerned they are interchangeable. DIV3, DIV4, DIV5, MP43, DIVX, DX50, all mean divx. Under video format, IV32, IV41 and IV50 mean Indeo Video 3.2, 4.1, and 5.0, respectively. You can find out what codec an AVI needs by opening it in Quicktime Player and looking in the Info window (command-I in QT 5 and above). Once you're sure it's an AVI, you need the right decompressor (or codec, which means COmpressor/DECompressor), as quicktime probably told you in an error message. I don't have pictures, but OGM and OGG files start with "OggS" and MKV, MKA and MKS files have "matroska" in the first 16 characters or so. Alternatively, you can open the file in a Hex Editor like He圎dit. asf, Windows Media Player (WMP) adds type and/or creator codes so changing the type back to avi or mpeg will be more difficult. So it might actually be an ASF file or MPEG-1 or -2. Windows users often think "AVI" means "computer movie file" (in fact it stands for Audio Video Interleave and the format was created by Microsoft, who has long since abandonned it in favor of ASF-"Advanced Streaming Format" and WMV-"Windows Media Video", the two of which all evidence indicates are exactly the same). Uncompressed RGB or YUY2) if(bi_in->bmiHeader.biCompression != 0 & bi_in->bmiHeader.Why Does My Large MPEG Only Play A Few Minutes?įirst, make sure it's an AVI. Check if the data is already in a recognised format (i.e. AVIFileGetStream(pf, &ps, streamtypeVIDEO, 0) ĪVIStreamInfo(ps, &strhdr, sizeof(strhdr)) īi_in = (BITMAPINFO*)malloc(biSize+sizeof(bi_out.bmiColors)) ĪVIStreamReadFormat(ps, 0, bi_in, &biSize) ![]()
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