You need to select a format that supports alpha such as a PNG Sequence or Quicktime ProRes 4444. To export with Alpha from After Effects, use the Render Queue. You are better off exporting as a ProRes then converting that to a H.264 file. Exporting H.264 directly from After Effects is not recommended, as it can be very slow to process. Generally, a Quicktime ProRes 422 or PNG Sequence is ideal. Then adjust the settings for that specific format under “Format Options…” To change your settings, first select your “Format” (such as Quicktime or PNG Sequence). Next, select “Lossless” next to “Output Module” to change your render settings. First, choose where to output to by selecting “ Not yet specified” next to “Output To”. Render QueueĬhoosing this option adds your project to After Effects built in Render Queue.

To get around this, you have to use the Render Queue option. This means no transparency, so projects meant to be placed over other footage (lower thirds for example) will export with a black background. When exporting using Media Encoder, you cannot export an alpha channel. However, there is a caveat to this method. Media Encoder also allows you to export multiple versions of your project under different names or different formats (H.264, ProRes, etc). This lets you make changes or work on other projects, and doesn’t hinder your workflow in a fast paced environment. The benefit of exporting using Media Encoder is that you can continue to use After Effects while your project is exporting. You can read more about these options here. So, what is the difference between these two options? Media EncoderĬhoosing this option will transfer your project to Media Encoder where you can then choose your output format (seen as Quicktime below). “Add to Adobe Media Encoder Queue” or “Add to Render Queue” Next select “Composition” from the menu bar. To begin, highlight your Composition Timeline.

After effects h264