codec defaults section

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Andrew Weaver 2018-08-29 12:40:34 -07:00
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<h2 id="concepts">Learn about more advanced FFmpeg concepts</h2>
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<label class="recipe" for="codec-defaults">Codec defaults</label>
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<h3>Codec Defaults</h3>
<p>Unless specified, FFmpeg will automatically set codec choices and codec parameters based off of internal defaults. These defaults are applied based on the file type used in the output (for example <code>.mov</code> or <code>.wav</code>).</p>
<p>When creating or transcoding files with FFmpeg, it is important to consider codec settings for both audio and video, as the default options may not be desirable in your particular context. The following is a brief list of codec defaults for some common file types:
<ul>
<li><code>.avi</code>: Audio Codec: mp3, Video Codec: mpeg4</li>
<li><code>.mkv</code>: Audio Codec: ac3, Video Codec: h.264</li>
<li><code>.mov</code>: Audio Codec: aac, Video Codec: h.264</li>
<li><code>.mp4</code>: Audio Codec: aac, Video Codec: h.264</li>
<li><code>.mpg</code>: Audio Codec: mp2, Video Codec: mpeg1video</li>
<li><code>.wav</code>: Audio Codec: pcm_s16le (16 bit PCM)</li>
</ul>
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<label class="recipe" for="filtergraphs">Filtergraphs</label>
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