Sorry, I made a mistake. The avformat consumer is not capable of alphaOn Thu, Mar 14, 2013 at 11:45 AM, Dan Dennedy <email@example.com> wrote:
> On Wed, Mar 13, 2013 at 10:26 PM, Rajiv Kumar <firstname.lastname@example.org> wrote:
>> Is there a way in MLT to create a video with transparent background?
> Yes, when using the decklink consumer, when you set keyer=1, then it
> will produce a keyed SDI output. When you are using the avformat
> consumer, you need to set mlt_image_format=rgb24a and use a suitable
> output format that has alpha channel such as PNG. I do not know what
> all video file formats have an alpha channel. Then, you need to either
> give MLT source files with an alpha channel or apply a filter that
> affects the alpha channel. There are some frei0r plugins that can
> alter the alpha channel.
channel output at this time. I will add it to my to-do list.