FFmpeg libav tutorial – from basic to transmuxing, transcoding and more

For a second I hoped it'd be an actual low-encoder that does a clever lossless transcoding by treating H.264 data as a subset of H.265 data. But this just feeds frames to ffmpeg.

<p><pre><code> import encoder encoder(stuff) </code></pre> look, I wrote Minimalist Encoder!

Having done something similar to transcode h264 to fragment mp4, there are a ton of pitfalls, weird settings and flags that need to be set to get a &quot;correct&quot; output that will play in most players. FFmpeg&#x2F;libav provides a ton of functionality, but sometimes it&#x27;s like reading javadocs, where you get the interface but have no idea of what to put in.

Has h265 got to the point where it&#x27;s always in every case better than h264? I don&#x27;t need to think about it anymore?

It is really good tutorial. Just not aligned when the expectations about programming depth. Really good.

Interesting tutorial on libav for sure but the submission title is definitely a bit of a stretch given that it&#x27;s just a libav tutorial and you can probably do the same with ffmpeg directly quite easily. Can we change the title please?

Great to see it here, simple and educative.

char* convert(char* str, char find, char replace){<p><pre><code> char *current_pos = strchr(str,find); while (current_pos){ *current_pos = replace; current_pos = strchr(current_pos,find); } return str; </code></pre> }<p>convert(&quot;H264&quot;, &quot;4&quot;, &quot;5&quot;)