Doom9's Forum - View Single Post - What filters to use for grain preservation

Mole · 26th May 2014, 13:16

But I'm telling you, you're not gonna get a good encode with only 3000 bitrate for 720, regardless.

I never said 3000 will ever give "transparent" encode at 720p. CRF mode is the better method to be sure that you will get constant quality from your encodes regardless of source.

I'm also telling you that you will get better quality by not having grains at this low bitrate. If you keep the grains, the x264 will encode at a worse quality because of the limited low bitrate.

According to the x264 docs, CRF=20 should get an overall good quality, but I doubt any type of source you will get 3000 bitrate with CRF=20 1280x720. It'll be more like at least 4000+. The more grainy and sharp source, the higher bitrate the CRF will use also.

But obviously every of us has different perception of "quality".
I can tell you this that for 1280x720 @ 3000 bitrate, most people aren't gonna consider this a quality encode.

26th May 2014, 13:16	#4 \| Link
Mole Registered User Join Date: Oct 2001 Location: Thailand Posts: 259	But I'm telling you, you're not gonna get a good encode with only 3000 bitrate for 720, regardless. I never said 3000 will ever give "transparent" encode at 720p. CRF mode is the better method to be sure that you will get constant quality from your encodes regardless of source. I'm also telling you that you will get better quality by not having grains at this low bitrate. If you keep the grains, the x264 will encode at a worse quality because of the limited low bitrate. According to the x264 docs, CRF=20 should get an overall good quality, but I doubt any type of source you will get 3000 bitrate with CRF=20 1280x720. It'll be more like at least 4000+. The more grainy and sharp source, the higher bitrate the CRF will use also. But obviously every of us has different perception of "quality". I can tell you this that for 1280x720 @ 3000 bitrate, most people aren't gonna consider this a quality encode.