So what I am asking is for help in understanding how we can extract archives from some arbitary offset. but I have no clue how it can be done, and Tadeusz is really really very busy with his job that actually earns him a livelihood. Recording the deflate blocks offsets and the corresponding decompressed file offsets.' The indexing would mean just decompressing the whole file in memory and At least that’s the only way I could think of that could possibly work. Then it startsĭecompression at the beginning of the block that contains the request offset in the decompressed file. 'I believe for zip, the winmount scans the zip file first and then records the position of the beginning of deflate blocks. This wayĪrtpol software is trying to make a free and open source was of doing this using pismo file mount. And when seeking is done on this file, then instead of extracting from start to this requested offset and then + requested size, extracting is done from the closest possible offset which is smaller than the requested offset and then extraction is done from there. What we need to do is, have a second layer of virtual folder, that shows the contents of the archive. If files being downloaded are extracted from the virtual file system, then that would cause the entire file to be downloaded. I don't have the much understanding of how compression algoritms work, and top of that there are so many. Another thing is that Winmount cannot be ported on other OSes by people other than the original developers, who don't seem interested in doing so. The trouble is WinMount is not stable and being a kernel extension, any slight error makes the entire OS crash. The only software that I know that can seek in RAR/zip and 7z archives is WinMount.įor seeking WinMount needs a index file, which is really small, something like 500KB for a 700MB archive. What I can do using neembuu downloader and seeking in RAR feature is I can watch at the same time I am downloading. The normal way would be, download fully -> extract fully -> watch That archive contains a video that I am interested in watching. Let's say I have a http link for a RAR archive.

Now the reason I send you this message is that I am getting stuck with doing this on archives. This is done by serving the file content through theįilesystem by creating virtual files using a filesystem pismo on windows and mac,

Just when he opens the file in vlc the downloading starts, when he forwards the video on vlc, the fileoffset from whereĭownloading is taking place the file shifts accordingly. This is supposed to work for archives as well. The user can use any player, like windows media player or vlc (let's take vlc as example). The main feature of this is, user can watch videos as he isĭownloading them. I am developing a downloader called neembuu ( ).

Winmount for mac