Difference between B-frame and b-frame when decoding x264
<p>I'm trying to achieve the following frame-pattern when encoding with the x264-encoder:</p>

<pre><code>IPBBPBBPBBPBBPBBI
</code></pre>

<p>So, basically I want every 16th frame to be an I-frame and between every 2 P-frames there have to be 2 B-frames. I use these parameters:</p>

<pre><code>x264.exe -I 16 -i 16 --bframes 2 --b-adapt 0 --tune psnr --fps 25 --input-res 416x240
</code></pre>

<p>But this gives an output of </p>

<pre><code>IPBbPBbPBbPBbPBbI
</code></pre>

<p>What is the difference between an uppercase B or a lowercase b in this context?</p>