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added sound handling

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for flip image and 4:3 <-> 16:9 formula
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Reto Kromer 2015-12-06 15:36:13 +01:00
parent 8db0ef60b2
commit 19039f2ba1
1 changed files with 9 additions and 3 deletions
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@ -499,11 +499,13 @@ path_name_and_extension_to_the_last_file</i></pre></dd>
<div class="well">
<h3>Transform 4:3 aspect ratio into 16:9 with pillarbox</h3>
<p>Transform a video file with 4:3 aspect ratio into a video file with 16:9 aspect ration by correct pillarboxing.</p>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "pad=ih*16/9:ih:(ow-iw)/2:(oh-ih)/2" <i>output_file</i></code></p>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "pad=ih*16/9:ih:(ow-iw)/2:(oh-ih)/2" -c:a copy <i>output_file</i></code></p>
<dl>
<dt>ffmpeg</dt><dd>starts the command</dd>
<dt>-i <i>input_file</i></dt><dd>path, name and extension of the input file</dd>
<dt>-filter:v "pad=ih*16/9:ih:(ow-iw)/2:(oh-ih)/2"</dt><dd>video padding<br/>This resolution independent formula is actually padding any aspect ratio into 16:9 by pillarboxing, because the video filter uses relative values for input width (iw), input height (ih), output width (ow) and output height (oh).</dd>
<dt>-c:a</dt><dd>re-encodes using the same audio codec<br/>
For silent videos you can replace -c:a copy by <code>-an</code>.</dd>
<dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
</dl>
</div>
@ -520,11 +522,13 @@ path_name_and_extension_to_the_last_file</i></pre></dd>
<div class="well">
<h3>Transform 16:9 aspect ratio video into 4:3 with letterbox</h3>
<p>Transform a video file with 16:9 aspect ratio into a video file with 4:3 aspect ration by correct letterboxing.</p>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "pad=iw:iw*3/4:(ow-iw)/2:(oh-ih)/2" <i>output_file</i></code></p>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "pad=iw:iw*3/4:(ow-iw)/2:(oh-ih)/2" -c:a copy <i>output_file</i></code></p>
<dl>
<dt>ffmpeg</dt><dd>starts the command</dd>
<dt>-i <i>input_file</i></dt><dd>path, name and extension of the input file</dd>
<dt>-filter:v "pad=iw:iw*3/4:(ow-iw)/2:(oh-ih)/2"</dt><dd>video padding<br/>This resolution independent formula is actually padding any aspect ratio into 4:3 by letterboxing, because the video filter uses relative values for input width (iw), input height (ih), output width (ow) and output height (oh).</dd>
<dt>-c:a</dt><dd>re-encodes using the same audio codec<br/>
For silent videos you can replace -c:a copy by <code>-an</code>.</dd>
<dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
</dl>
</div>
@ -540,11 +544,13 @@ path_name_and_extension_to_the_last_file</i></pre></dd>
<div class="modal-content">
<div class="well">
<h3>Flip the video image horizontally and/or vertically</h3>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "hflip,vflip" <i>output_file</i></code></p>
<p><code>ffmpeg -i <i>input_file</i> -filter:v "hflip,vflip" -c:a copy <i>output_file</i></code></p>
<dl>
<dt>ffmpeg</dt><dd>starts the command</dd>
<dt>-i <i>input_file</i></dt><dd>path, name and extension of the input file</dd>
<dt>-filter:v "hflip,vflip"</dt><dd>flips the image horizontally and vertically<br/>By using only one of the parameters hflip or vflip for filtering the image is flipped on that axis only. The quote marks are not mandatory.</dd>
<dt>-c:a</dt><dd>re-encodes using the same audio codec<br/>
For silent videos you can replace -c:a copy by <code>-an</code>.</dd>
<dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
</dl>
</div>