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| On Jun 10, 2014, at 12:28 PM, Byron Nash wrote: > I second the comments made from everyone. I agree with Teddy that extra channels would be really helpful along with 32bit color as well. There aren't many options for rendering when you need 32bit or alpha channels. If you could make the channels arbitrary like openEXR, that would be even better. Being able to embed multiple alphas, or depth or some other thing into the video would be great. Yeah, I've been thinking about that one and it should be do-able. MXF, like many container formats, lets you put any number of tracks into it. The key will be coming up with a standard way to attach meaning to the different tracks. Since EXR is already going to be a part of MOX, I guess EXR-style channel access would make the most sense. Different codecs have different capabilities. EXR lets you put an arbitrary number of channels into a frame, but many codecs like PNG can only do RGBA and others like JPEG and Dirac can only do RGB (no alpha). But I think MOX should let people do JPEG with Alpha by writing a second track to hold the alpha. That same model should be expanded to let people write another view for stereo, or multiple layers, or whatever they want like you can with EXR. Brendan |
