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modify YUV > Y'CbCr

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Thanks for the hint, @krfn!
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Reto Kromer 2017-02-26 22:09:14 +01:00 committed by GitHub
parent a3281a1e08
commit bcca8d0fee
1 changed files with 5 additions and 5 deletions
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@ -119,7 +119,7 @@
<dt>ffmpeg</dt><dd>starts the command</dd> <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>-i <i>input_file</i></dt><dd>path, name and extension of the input file</dd>
<dt>-c:v libx264</dt><dd>tells ffmpeg to change the video codec of the file to H.264</dd> <dt>-c:v libx264</dt><dd>tells ffmpeg to change the video codec of the file to H.264</dd>
<dt>-pix_fmt yuv420p</dt><dd> libx264 will use a chroma subsampling scheme that is the closest match to that of the input. This can result in YUV 4:2:0, 4:2:2, or 4:4:4 chroma subsampling. QuickTime and most other non-FFmpeg based players can’t decode H.264 files that are not 4:2:0. In order to allow the video to play in all players, you can specify 4:2:0 chroma subsampling.</dd> <dt>-pix_fmt yuv420p</dt><dd> libx264 will use a chroma subsampling scheme that is the closest match to that of the input. This can result in Y′C<sub>B</sub>C<sub>R</sub> 4:2:0, 4:2:2, or 4:4:4 chroma subsampling. QuickTime and most other non-FFmpeg based players can’t decode H.264 files that are not 4:2:0. In order to allow the video to play in all players, you can specify 4:2:0 chroma subsampling.</dd>
<dt>-c:a copy</dt><dd>tells ffmpeg not to change the audio codec</dd> <dt>-c:a copy</dt><dd>tells ffmpeg not to change the audio codec</dd>
<dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd> <dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
</dl> </dl>
@ -463,7 +463,7 @@
<dt><i>yadif</i></dt><dd>deinterlacing filter (‘yet another deinterlacing filter’)</dd> <dt><i>yadif</i></dt><dd>deinterlacing filter (‘yet another deinterlacing filter’)</dd>
<dt><i>,</i></dt><dd>separates filters</dd> <dt><i>,</i></dt><dd>separates filters</dd>
<dt><i>format=pix_fmts=yuv420p</i></dt><dd>chroma subsampling set to 4:2:0<br> <dt><i>format=pix_fmts=yuv420p</i></dt><dd>chroma subsampling set to 4:2:0<br>
By default, <code>libx264</code> will use a chroma subsampling scheme that is the closest match to that of the input. This can result in Y′CbCr 4:2:0, 4:2:2, or 4:4:4 chroma subsampling. QuickTime and most other non-FFmpeg based players can’t decode H.264 files that are not 4:2:0, therefore it's advisable to specify 4:2:0 chroma subsampling.</dd> By default, <code>libx264</code> will use a chroma subsampling scheme that is the closest match to that of the input. This can result in Y′C<sub>B</sub>C<sub>R</sub> 4:2:0, 4:2:2, or 4:4:4 chroma subsampling. QuickTime and most other non-FFmpeg based players can’t decode H.264 files that are not 4:2:0, therefore it's advisable to specify 4:2:0 chroma subsampling.</dd>
<dt><i>"</i></dt><dd>end of filtergraph</dd> <dt><i>"</i></dt><dd>end of filtergraph</dd>
<dt><i>output file</i></dt><dd>path, name and extension of the output file</dd> <dt><i>output file</i></dt><dd>path, name and extension of the output file</dd>
</dl> </dl>