Dynamic tone mapping

1. A computer-implemented method for dynamic tone mapping of video content, comprising:

receiving, by a dynamic tone mapping system executing on a media device, histogram data associated with a first video signal representing a video program, wherein the first video signal has a first dynamic range and static metadata describing one or more brightness characteristics of the video program, wherein the histogram data comprises color values for a plurality of frames in the first video signal outputted by a display device;

determining, by the dynamic tone mapping system, a scene maximum value for a scene in the video program based on the histogram data, wherein the scene maximum value defines a maximum target brightness value for proper display of the scene;

modifying, by the dynamic tone mapping system, a tone mapping curve based on the scene maximum value and characteristics of the display device to generate a modified tone mapping curve; and

converting, by the dynamic tone mapping system, the first video signal based on the modified tone mapping curve to generate a second video signal having a second dynamic range that is less than the first dynamic range.

2. The computer-implemented method of claim 1 , wherein the modifying the tone mapping curve comprises:

modifying the tone mapping curve based on a user setting.

3. The computer-implemented method of claim 2 , further comprising:

adapting, by the dynamic tone mapping system, the second video signal to the user setting.

4. The computer-implemented method of claim 1 , further comprising:

generating, by the dynamic tone mapping system, video quality enhancement data based on the histogram data associated with the first video signal, and

wherein the converting further comprises:

converting, by the dynamic tone mapping system, the first video signal based on the video quality enhancement data.

5. The computer-implemented method of claim 4 , wherein the video quality enhancement data comprises dark scene adjustment data, bright scene adjustment data, or detail enhancement data.

6. The computer-implemented method of claim 1 , wherein the modifying further comprises:

temporally filtering, by the dynamic tone mapping system, the modified tone mapping curve.

7. A system for dynamic tone mapping of video content, comprising:

a memory; and

at least one processor coupled to the memory and configured to:

receive histogram data associated with a first video signal representing a video program, wherein the first video signal has a first dynamic range and static metadata describing one or more brightness characteristics of the video program, wherein the histogram data comprises color values for a plurality of frames in the first video signal outputted by a display device;

determine a scene maximum value for a scene in the video program based on the histogram data, wherein the scene maximum value defines a maximum target brightness value for proper display of the scene;

modify a tone mapping curve based on the scene maximum value and characteristics of the display device to generate a modified tone mapping curve; and

convert the first video signal based on the modified tone mapping curve to generate a second video signal having a second dynamic range that is less than the first dynamic range.

8. The system of claim 7 , wherein to modify the tone mapping curve, the at least one processor is further configured to:

modify the tone mapping curve based on a user setting.

9. The system of claim 8 , wherein the at least one processor is further configured to:

adapt the second video signal to the user setting.

10. The system of claim 7 , wherein the at least one processor is further configured to:

generate video quality enhancement data based on the histogram data associated with the first video signal; and

wherein to convert the first video signal, the at least one processor is further configured to:

convert the first video signal based on the video quality enhancement data.

11. The system of claim 10 , wherein the video quality enhancement data comprises dark scene adjustment data, bright scene adjustment data, or detail enhancement data.

12. The system of claim 7 , wherein to modify the tone mapping curve, the at least one processor is further configured to:

temporally filter the modified tone mapping curve.

13. A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one computing device, cause the at least one computing device to perform operations for dynamic tone mapping of video content, the operations comprising:

receiving histogram data associated with a first video signal representing a video program, wherein the first video signal has a first dynamic range and static metadata describing one or more brightness characteristics of the video program, wherein the histogram data comprises color values for a plurality of frames in the first video signal outputted by a display device;

determining, by a dynamic tone mapping system, scene maximum value for a scene in the video program based on the histogram data, wherein the scene maximum value defines a maximum target brightness value for proper display of the scene;

modifying a tone mapping curve based on the control point scene maximum value and characteristics of the display device to generate a modified tone mapping curve; and

converting the first video signal based on the modified tone mapping curve to generate a second video signal having a second dynamic range that is less than the first dynamic range.

14. The non-transitory computer-readable medium of claim 13 , wherein the modifying the tone mapping curve comprises:

modifying the tone mapping curve based on a user setting.

15. The non-transitory computer-readable medium of claim 14 , wherein the operations further comprise:

adapting the second video signal to the user setting.

16. The non-transitory computer-readable medium of claim 13 , wherein the operations further comprise:

generating video quality enhancement data based on the histogram data associated with the first video signal; and

wherein the converting further comprises:

converting the first video signal based on the video quality enhancement data.

17. The non-transitory computer-readable medium of claim 13 , wherein the modifying further comprises:

temporally filtering the modified tone mapping curve.