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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

 

Bold numbers in ordered lists

 

Numbers in an ordered list made bold without having any extra HTML tags added: List item List item List item HTML / XHTML. Code: <ol> <li>List item</li> <li>List item</li> <li>List item</li> </ol> CSS. Code: ol {counter-reset: item;} ol li {display: block;} ol li:before {content: counter(item) ". "; counter-increment: item; font-weight: bold;} There is no obvious way at the moment to style only numbers marking ordered list items. A workaround is to use a CSS counter instead of the default automatic numbering of ordered lists. The way a CSS counter is started allows to style specifically the marking numbers. Like in the example, where numbers in an ordered list are styled bold. This method also lets to use other characters after the numbers - besides dots. Like a parenthesis / round bracket instead of a dot. Or handling of space between the number, punctuation mark and the content proper of list item. [ 1 ] As well as Netscape 9.0+. [ 2 ] As well as Netscape 9.0+.

CSS nowrap

 

Preventing text wrapping by means of CSS: Preventing this text from wrapping HTML / XHTML. Code: <div class="nowrap">Preventing this text from wrapping</div> CSS. Code: .nowrap {white-space: nowrap;} Keeping text from wrapping using CSS - i.e. achieving the same effect as with HTML table cell nowrap attribute. Notes The default value for the white-space property - white-space: normal - brings text wrapping back. Adding <br /> into text overrides CSS command and makes the text to wrap at that point. [ 1 ] As well as Netscape 6.01+, Mozilla 0.6+. [ 2 ] As well as Netscape 6.01+, Mozilla 0.6+.