Re: [FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-26 Thread Paul B Mahol
On 11/26/17, Flatgrey wrote: > Thanks Gyan > > That improved things slightly. The difference is pretty noticeable though > to the output I can get with Premiere. > > Do you know if you can specify the colour bit depth for the png file? png supports 8 bit depth or 16 bit depth per pixel component

Re: [FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-26 Thread Flatgrey
Thanks Gyan That improved things slightly. The difference is pretty noticeable though to the output I can get with Premiere. Do you know if you can specify the colour bit depth for the png file? Thanks Pete Sent from my iPhone > On 25 Nov 2017, at 11:57, Gyan Doshi wrote: > > >> On 11/2

Re: [FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-25 Thread Gyan Doshi
On 11/25/2017 3:20 PM, Pete Willis wrote: We have a transparent PNG file with a drop shadow. The drop shadow when overlayed onto a Mov is rendering very dark. This is usually related to whether the input color pixels are straight or pre-multiplied. Try ffmpeg -I TEST-1.mxf -i test-1.p

[FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-25 Thread Pete Willis
We have a transparent PNG file with a drop shadow. The drop shadow when overlayed onto a Mov is rendering very dark. Comparing the same file in an NLE (Premiere Pro) the drop shadow opacity is showing as much lighter. I believe the problem is that the NLE is using 32bit colour depth where as

Re: [FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-23 Thread Carl Eugen Hoyos
2017-11-23 23:48 GMT+01:00 Pete Willis : > The param we are using is -filter_complex 'overlay' Please provide the command line you tested together with the complete, uncut console output. Remember that only current FFmpeg git head is supported here. > The information contained in this transmissi

[FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

2017-11-23 Thread Pete Willis
We have a transparent PNG file with a drop shadow. The drop shadow when overlayed onto a Mov is rendering very dark. Comparing the same file in an NLE (Premiere Pro) the drop shadow opacity is showing as much lighter. I believe the problem is that the NLE is using 32bit colour depth where as F