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Split video file. FFmpeg

Operating systems : Windows, Linux

Split video file by ffmpeg:

There are two ways how to split video files by ffmpeg. The first one is good in itself, more than that - it is faster, but sometimes creates output files with certain flaws. So for those cases there is the second way of splitting video files: it is considerably slower, the output files are bigger, but it seems they are always of the same quality level as input files used.

Way : 1

ffmpeg -ss <start> -t <duration> -i in1.avi -vcodec copy -acodec copy out1.avi

Way : 2

ffmpeg -ss <start> -t <duration> -i in1.avi -sameq out1.avi

- <start> - the beginning of the part of a video ffmpeg is to cut out. Format: 00:00:00 - hours:minutes:seconds - hh:mm:ss

- <duration> - the duration of the part of a video ffmpeg is to cut out. Format: 00:00:00 - hours:minutes:seconds - hh:mm:ss

Examples

ffmpeg -ss 01:19:00 -t 00:05:00 -i in1.avi -vcodec copy -acodec copy out1.avi

ffmpeg -ss 01:19:00 -t 00:05:00 -i in1.avi -sameq out1.avi

- ffmpeg cuts out a part of the video file starting from 1 hour 19 minutes 0 seconds. The duration of the video sequence cut out is 5 minutes 0 seconds.

About ffmpeg: ( Home page ) ( List of supported file formats and codecs )


Aliosque subditos et thema

 

HTML centering

 

Centering the whole content of a web page in the viewable area of a browser by pure HTML - no CSS. A box to keep the content of the page is HTML centered horizontally and vertically - [ Open demo page ] HTML. Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>HTML centering</title> <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"> </head> <body bgcolor="#ffffff"> <table width="100%" height="100%" bgcolor="#a3ddc4"> <tr> <td align="center"> <table width="800" height="500" bgcolor="#ff6f6f"> <tr> <td>&nbsp;</td> </tr> </table> </td> </tr> </table> </body> </html> The outer HTML table makes the whole web browser viewable area, except margins, a HTML table and the whole area of this HTML table - a HTML table cell. The cell of the outer HTML table inherits the default value for valign attribute from its parent table row. And this row in its turn inherits the default value for valign attribute from the outer HTML table tbody - even if tbody tag is not used. And that value is middle. So a block of content inside the cell of the outer HTML table is centered vertically in web browser viewable are. Align="center" of the outer HTML table cell makes a block of content inside it centered horizontally in web browser viewable are. The inner table, the one inside of the outer HTML table cell makes up a box of a given size. Or there may be no set height or no set width or both. Then the size of the box is to adjust to accommodate the content, whatever its dimensions are. If the width or height or both of the box results to be larger than web browser viewable area, then it still ends up to be centered. Since HTML centering is the oldest method to center content horizontally and vertically, it works well not just in older web browsers, but in ones that can be described as downright ancient. Like adding one more HTML tag ( <center></center> ) around the outer table makes it funcion as deep as Internet Explorer 3 : [ Open demo page ] Download Internet Explorer 3: a pack, containing 3.0, 4.01, 5.01, 5.5, 6.0 versions of Internet Explorer HTML.

Selecting all in mc

 

Selecting all files and folders in a directory viewed in a panel of Midnight Commander. Achieving the same effect a does Ctrl - A under Microsoft Windows or Cmd - A in Mac OS X: Open a directory --> Ctrl - Shift - = --> Enter * [asterisk] --> Enter A directory with files and folders Selection options prompt Entering * [asterisk] All files and folders has been selected The keyboard shortcut of Ctrl - Shift - = is meant to type plus symbol. So just Shift - = may also happen to be enough. The "Using shell patterns" option in selection options prompt has to be checked on in order to make asterisk to work as the symbol for "all" or "any".