Youtube Compression Undoing Some of Neat Video's Work
Posted: Sun Dec 08, 2013 6:09 pm
I've uploaded a Neat Video, noise-reduced video to Youtube:
http://youtu.be/cWmCPQ_j9yU
The original raw video, with noise, is also uploaded for reference:
http://youtu.be/Y-sLtrKGxJ8
You might need to watch in fullscreen to notice the difference!
I'm using Sony Vegas Move Studio, a temporal filter radius of 5, Adaptive Filtration, sharpening on the Y channel, High Freq., of 120%, Noise Reduction in Y of 70% (versus 60% default) and Noise Level of +75% in High Freq.. Everything else is default. These parameters may be slightly secondary as it seems Neat Video is doing a good job; it maybe more an issue with the rendering in Vegas and subsequent compression by Youtube.
I'm rendering to Sony AVC, 1920 X 1080, High Profile, CABAC, bit rate of 16Mbps (the max. available), MPEG-2 transport stream (*.m2ts).
Thing is, I'm getting some compression artefacts or pixellation (if they're the right words) on e.g. the yellow walls in the right corner. Now, I'm not sure whether this is strictly speaking noise but it's like Youtube has brought some "noise" back into the video. The file is fairly compressed as the original is 750Mb and the Youtube (MP4) version is only 75Mb.
Here is 40sec of the noise-reduced source video, after it's been rendered by Sony Vegas but before it's been compressed by Youtube:
http://we.tl/eOTqhk5eAQ
It seems Neat Video has done a decent job removing the noise in the above?
Again, for reference, I've uploaded 40sec of the original raw video, with noise, and again before it's been compressed by Youtube:
http://we.tl/Jl68QDs9V5
So, finally, my question is does anyone know of more optimal set of render settings to avoid the artefacts on Youtube?
http://youtu.be/cWmCPQ_j9yU
The original raw video, with noise, is also uploaded for reference:
http://youtu.be/Y-sLtrKGxJ8
You might need to watch in fullscreen to notice the difference!
I'm using Sony Vegas Move Studio, a temporal filter radius of 5, Adaptive Filtration, sharpening on the Y channel, High Freq., of 120%, Noise Reduction in Y of 70% (versus 60% default) and Noise Level of +75% in High Freq.. Everything else is default. These parameters may be slightly secondary as it seems Neat Video is doing a good job; it maybe more an issue with the rendering in Vegas and subsequent compression by Youtube.
I'm rendering to Sony AVC, 1920 X 1080, High Profile, CABAC, bit rate of 16Mbps (the max. available), MPEG-2 transport stream (*.m2ts).
Thing is, I'm getting some compression artefacts or pixellation (if they're the right words) on e.g. the yellow walls in the right corner. Now, I'm not sure whether this is strictly speaking noise but it's like Youtube has brought some "noise" back into the video. The file is fairly compressed as the original is 750Mb and the Youtube (MP4) version is only 75Mb.
Here is 40sec of the noise-reduced source video, after it's been rendered by Sony Vegas but before it's been compressed by Youtube:
http://we.tl/eOTqhk5eAQ
It seems Neat Video has done a decent job removing the noise in the above?
Again, for reference, I've uploaded 40sec of the original raw video, with noise, and again before it's been compressed by Youtube:
http://we.tl/Jl68QDs9V5
So, finally, my question is does anyone know of more optimal set of render settings to avoid the artefacts on Youtube?