LEAD Support Forum   Resource to find answers and post technical questions about LEAD products. Search       Forums Home

Slow performance in the ConcatSameSize demo Started by Jon Shaw at 08-05-2008 17:40. Topic has 1 replies. LEAD Support Fo... » Developer » Multimedia » Slow performance in the ConcatSameSize demo

Search

08-05-2008, 17:40 Jon Shaw Joined on 08-05-2008 Posts 1 Slow performance in the ConcatSameSize demo I’m considering purchasing your multimedia product because it seems to do exactly what I need. I need to join multiple video clips, of a users choice, together into one file. I must be able to support DivX, mp4 and wmv/a. I am writing a web application in c# (.Net). I have downloaded the evaluation version of your product, however the “ConcatSameSize” example seems to be working very slowly. I have tried joining two DivX files which are about 5 minutes each. The sample application works fine except that it takes about 7 minutes to complete. This is way too long to suit my needs. My users will most likely be selecting more than 5 files each. I would very much like to purchase your product, is there a way to speed this process up considerably. I don’t need to convert formats or do any other processing, I just need to join clips. I just need to go from DivX to DivX or from mp4 to mp4 or from wmv to wmv. Any help would be appreciated. Jon    Report

08-06-2008, 8:41 Yasir Alani Joined on 02-05-2007 Posts 311 Re: Slow performance in the ConcatSameSize demo Re-encoding video files is a time consuming operation. The problem with concatenation is that both files must be split into individual samples (frames), then re-combined into one file. Unfortunately, this is true even if both original clips used the same video format and compression type. Generally, the speed of re-encoding depends on: 1. Processor speed and memory. 2. Codecs used in de-compressing and compressing videos. 3. Resolution of the video. You should get better results in improving the first point (use a faster processor and increase RAM). Using a different codec can also improve results, but you find which codec gives best results only by doing some tests. Yasir Alani LEADTOOLS Technical Support support@leadtools.com    Report

LEAD Support Fo... » Developer » Multimedia » Slow performance in the ConcatSameSize demo

(please select) Forums Home |- Search Forums |- Active Topics |- Unanswered Posts User Options |- Sign In |- Create a New Account |- Forgot Password General |- Feature Requests |- Example Requests |- Support Site Suggestions Enduser |- ePrint |-- FAQ |- Multimedia Codec's |- Capture & Convert |- Capture & Present |- Photoshop Plugins |- LEADViEW LEAD/Axtel Barcode SDK |- LEAD/Axtel FAQ |- Barcode Developer |- FAQ |- General |- Image Processing |- Image Compression |-- Examples |- Color Conversion |- Image Display |- Special Effects |- Multimedia |- Internet |-- Examples |- File Formats |- Scanning/Capture |- Common Dialogs |- Printing |- Annotations |- Database |- DICOM/Medical Imaging |- OCR |- JBIG |- Vector |- PDF |- ePrint API |- Multimedia Filter Pack API |- DotNet |-- COM Interop |-- WPF |- Deployment |- Forms Recognition |- JPIP