AVPlayer using a colorcube and HLS source

Question

paulinventome OP

Created Nov ’17

Replies 2

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Okay,

Not so experienced with AVFoundation or iOS so finding my way.

I am trying to play a video on iOS that is sourced from a HLS stream and goes through a LUT (ColorCube)

I had it working using a .mp4 file from a server, but that approach doesn't work with a HLS stream. The general approach was

Get the Asset (AVAsset from URL)

Get the AVAssetTrack for the video

Create AVMutableComposition with that track

Create a AVMutableVideoComposition with that composition above and then pass the CIFilter set up in that constructor

Create a player item from the composition and then pass the video composition as the VideoComposition

Now that appeared to work but frankly it seems a pretty odd set up

And i assume the reason why the HLS source doesn't work is because of step 2 and there not being a track until it starts playing?

So i'm really confused about the correct set up for passing the video through a CI Filter from a HLS source.

Can anyone point me in the vague direction where i should be looking?

thanks!
Paul

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Answer 1

paulinventome OP

Nov ’17

Replying to add some detail.

I have the simplest version

Get an AVAsset

Create AVVideoComposition with the asset and the CI filter set up

Create AVPlayerItem and AVPlayer

So, if i supply a URL which is a .mp4 file then it works

If i supply a URL which is a HLS playlist then the video players but there are no CIFilters running

Literally just swapping the source URL so i assume that HLS must be going through some other pipeline, in which case how do i add CI Filters to that or even overlay other tracks?

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Answer 2

thanhturin OP

Nov ’20

@paulinventome According to Apple docs

A video composition can only be used with file-based media and is not supported for use with media served using HTTP Live Streaming.

You may wanna check out CADisplayLink for HLS instead.

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