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| Unofficial VirtualDub Support Forums > Newbie Questions > 1080p Uncompressed Avi "preformance Issue" |
| Posted by: campdude Mar 28 2013, 01:55 AM |
| Hey I'm using Virtual dub to play/edit 1080p uncompressed avi and I can barely play the video without it "glitching" I realize I am using Windows XP and these files are getting to the size of several hundred gigabytes. Is it cause I have a really slow CPU AMD FX-4100 @ 4.2 Ghz I got tonnes of ram plus the page-file is on the ram... (thats unused by Windows XP 32-bit) or...Is it just the Hard-drive limitation? It still takes alot out of my system with an SSD. Or do you guys have any tips? I haven't really tried it on Windows 7.. but not so sure about that yet I have all my codecs installed on XP and its working. Is anyone else running 1080p videos and uncompressed and getting smooth playback? |
| Posted by: rjisinspired Mar 28 2013, 04:27 AM |
| Even 720p uncompressed could be kind of rocky to play fluently on a lot of computers. I don't have an up to date system but this is from what I have read from many other forums. Also I remember reading that Vdub is more of an editor than a video player so playback will not be as smooth. Someone here can correct me if I'm wrong. |
| Posted by: dloneranger Mar 28 2013, 06:11 AM |
| Yeah, Virtualdub isn't designed the same as a high performance "player" You're throwing a lot of data around the system (1080p@29..97 is ~178Mb a second just for the video, and ~86Mb for stereo audio) and any interruptions will be noticeable Uncompressed video is a major bandwidth hog - you could try mitigating that by using lossless video compression instead - lagarith, huffy Players are designed with the sole intention of watching a video, and being the most important thing happening on the pc while that's going on - they run at high priority, prebuffer the next frames ahead of time,decode straight to the graphics card etc etc A video editor on the other hand just doesn't have the same set of priorities. It's focussed on decoding, modifying and encoding the video while still leaving the pc as usable as possible. Delays, glitches etc don't really matter for doing any of that (There's a lot of stuff in Virtualdub dedicated to running at idle priority and not interrupting whatever else the pc's doing) I'd recommend using a tool that's designed for the job For watching a video, use a player - media player classic, vlc etc |
| Posted by: campdude Mar 28 2013, 03:27 PM |
| I just dont want to lose any quality. through compression. Yea these files I'm editing will not open up in Windows Media Player. Its AVI but WMP wont open it. I try to open up these files with "nero showtime" and its just as bad as Virtual Dub and even worse cause its having trouble loading them.... I'll have to try Media Player Classic or VLC. Just at the moment the only program that can open these files is Virtual Dub (for me). |
| Posted by: dloneranger Mar 28 2013, 05:11 PM |
| Lossless compression is just that - you don't lose anything when it's compressed/decompressed - just like a zip archive |