Ari Koivula
d23a5a15f1
Fix overflow in rate control
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A 32 bit int overflowed after 2^31 bits (2Gb). It will still overflow
eventually, after 500 years of outputting 1Gb/s, but by that time,
I recon we will have fixed this properly and it's time to upgrade.
2016-02-18 16:48:21 +02:00
Ari Koivula
8d9e8aad73
Fix lambda calculation to match HM
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The lambda was not being increased for non-key frames and was different
in other ways too. The new implementation matches HM.
2015-11-03 16:49:42 +02:00
Arttu Ylä-Outinen
173b70b53f
Rename SLICE_* enum constants to KVZ_SLICE_*.
2015-09-28 10:30:56 +03:00
Arttu Ylä-Outinen
3a10e9e3e0
Prefix all non-static symbols with "kvz_".
2015-08-26 13:02:28 +03:00
Ari Lemmetti
4dcc0d876d
Fix rate control when --owf=auto (default)
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Value in cfg stays -1 if auto selection is used.
Use value in encoder instead.
2015-08-12 18:20:57 +03:00
Arttu Ylä-Outinen
984e7cb4e0
Fix setting QP when rate control is disabled.
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When rate control is disabled, QP and lambda are now selected like they
were before rate control was implemented.
2015-06-01 13:57:11 +03:00
Arttu Ylä-Outinen
b0435d37a9
Update rate control parameters.
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On each frame, adjust the parameters alpha and beta in the equation
lambda = alpha * pow(R, beta)
2015-05-29 11:50:08 +03:00
Arttu Ylä-Outinen
b24d92bd6e
Move initialization of constants to encoder.c.
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Some constants used in rate control are now initialized only once instead
of being computed on every frame. Adds pixels_per_pic, target_avg_bppic,
target_avg_bpp and gop_layer_weights to encoder_control_t.
2015-05-29 11:45:36 +03:00
Arttu Ylä-Outinen
b54d5aa91f
Select GOP picture weights according to bitrate.
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Pictures in same layer have equal weights. At low bitrates, the difference
between low and high layers is greater than at high bitrates.
2015-05-29 11:43:42 +03:00
Arttu Ylä-Outinen
93d2a95ddc
Implement rate control in lambda domain.
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- Rate control adjusts the lambda value.
- QP is selected according to lambda.
- Bits are allocated for GOPs and individual pictures.
2015-05-19 11:40:51 +03:00
Arttu Ylä-Outinen
4a5698a6ba
Implement basic rate control.
2015-05-19 10:42:17 +03:00
