version 0.23.0

Author: wang-bin

Changelog.md

@@ -1,5 +1,35 @@
 Change log:
 
+## 0.23.0 - 2023-10-31
+
+- HDR
+    - Support scRGB, via `player.set(ColorSpaceSCRGB)`, recommended for windows HDR screen, same experience as system player. You can try it in [QtQuick](https://github.com/wang-bin/mdk-examples/blob/master/Qt/qmlrhi/VideoTextureNodePriv.cpp#L66) app via env var `QSG_RHI_HDR=scrgb`, or in OBS Studio via [the plugin](https://github.com/wang-bin/obs-mdk)
+    - Add global option "sdr.white", SDR white level. Default is 203. Can be a different value, e.g. Qt is 100. OBS Studio default is 300 and can be changed by user in settings dialog.
+    - Add global option "hdr10.format", Metal only. Metal use rgba16f for HDR10 by default. This can [let QtQuick apps support perfect HDR playback on macOS](https://github.com/wang-bin/mdk-examples/blob/master/Qt/qmlrhi/VideoTextureNodePriv.cpp)
+    - Add ColorSpaceSCRGB, ColorSpaceExtendedLinearDisplayP3
+    - Fix linear target trc
+- Metal: use HLG metadata. use scRGB if requested hdr is not supported.
+- Raspberry pi: fix hevc 0-copy OpenGL renderer crash on debian 12. It's a driver bug.
+- Decoder options can be set via `player.set("video.decoder", "key1=val1:key2=val2")`
+- AMediaCodec:
+    - Fix crash if image=1 on api level < 26
+    - Do not acquire an image if releaseOutputBuffer error, fix long wait after seek/stop
+- Add SeekFlag::SeekFlag for KeyFrame seeking. This can fix EPERM error for some videos.
+- `Player.position()` is the last seek request target position when seeking. Previously if seeking is frequent may go back to a previous seek result position then the final position.
+- Improve seeking, fix seek request not processed, fix seek callback may be called multiple times
+- Fix onFrame() callback sometimes can't get an EOS frame when playback finished or stopped by some reason.
+- Fix gpu VideoFrame.to() not in host memory if target format, size is the same as input
+- Fix `Player.prepare()` from a position > 0 wrong result if the first decoder fails.
+- Fix `waitFor()` dead lock
+- Fix PGS subtitle frame duration
+- VAAPI: fix undefined symbol on old systems, e.g. ubuntu 16.04
+- FFmpeg:
+    - Fix audio timestamp if a packet has no pts
+- BRAW:
+    - Fix crash when destroying player if cuda 0-copy is used
+    - Fix OpenCL pipeline, by AdrianEddy
+
+
 ## 0.22.1 - 2023-09-30
 
 - `VideoFrame.timestamp()` is alway readable. `TimestampEOS` indicates no more frames

README.Android.md

@@ -10,7 +10,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)
@@ -58,7 +58,7 @@ MediaCodec/AMediaCodec decoder will not be destroyed if app go to background, an
 ```cpp
     SetGlobalOption("JavaVM", JvmPtr); // REQUIRED
     player.setDecoders(MediaType::Video, {"AMediaCodec", "FFmpeg", "dav1d"});
-````
+```
 
 ## Source code:
 - [some examples using mdk sdk](https://github.com/wang-bin/mdk-examples)

README.Linux.md

@@ -10,7 +10,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)
@@ -64,9 +64,11 @@ Optional:
 - command line: -c:v decodername
 
 ### DRM Prime
-RaspberryPi OS system ffmpeg provides hevc and v4l2m2m drm_prime frame output, you can use system ffmpeg(delete libffmpeg.so.* in sdk package) with OpenGLES(desktop GL does not support hevc) contexts created from EGL to get maximum performance. glfwplay option to test: -c:v V4L2M2M,FFmpeg:hwcontext=drm -gl. It's recommend to call `SetGlobalOption("eglimage.reuse", 1)` or decoder option `reuse=1` to get better performance, glfwplay option is `-eglimage.reuse 1`.
+RaspberryPi OS system ffmpeg provides hevc and v4l2m2m drm_prime frame output, you can use system ffmpeg(delete libffmpeg.so.* in sdk package) with OpenGLES(desktop GL does not support hevc) contexts created from EGL to get maximum performance. glfwplay option to test:
+ - x11: `./glfwplay -c:v V4L2M2M,FFmpeg:hwcontext=drm:sw_fallback=1 -gl test.mp4`
+ - wayland: `./glfwplay -c:v V4L2M2M,FFmpeg:hwcontext=drm:sw_fallback=1 -es test.mp4`, you have to install glfw `sudo apt install libglfw3-wayland`
 
-RaspberryPi OS rendering performance is poor, you may have to disable log, log to file or minimize terminal to get higher fps, otherwise rendering log may slow down video rendering.
+RaspberryPi OS rendering performance is poor, you may have to disable log, log to file or minimize terminal to get higher fps, otherwise rendering log may slow down video rendering. wayland environment has better performance
 
 ### Examples
 GL Context

README.WinRT.md

@@ -10,7 +10,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, D3D12, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11/12, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)

README.Windows.md

@@ -12,7 +12,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, D3D12, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11/12, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)

README.iOS.md

@@ -10,7 +10,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)

README.macOS.md

@@ -10,7 +10,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)

README.md

@@ -16,7 +16,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, D3D12, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11/12, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - Subtitle rendering, including ass, plain text, bitmap, closed caption
@@ -79,7 +79,7 @@ Install via [NuGet](https://www.nuget.org/packages/mdk) in Visual Studio for bot
 ```cpp
     SetGlobalOption("JavaVM", JvmPtr); // REQUIRED
     player.setDecoders(MediaType::Video, {"AMediaCodec", "FFmpeg", "dav1d"});
-````
+```
 
 #### Live streams (RTSP, RTMP etc.) low latency
 ```cpp

README.rpi.md

@@ -13,7 +13,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)
 - [Smart FFmpeg runtime, dynamic load, compatible with 4.x~6.x abi](https://github.com/wang-bin/mdk-sdk/wiki/FFmpeg-Runtime)

nuget/README.md

@@ -12,7 +12,7 @@
 - [Dynamic OpenGL](https://github.com/wang-bin/mdk-sdk/wiki/OpenGL-Support-Matrix)
 - [OpenGL, D3D11, D3D12, Vulkan and Metal rendering w/ or w/o user provided context](https://github.com/wang-bin/mdk-sdk/wiki/Render-API)
 - Integrated with any platform native ui apps, gui toolkits or other apps via [OpenGL, D3D11, D3D12, Vulkan and Metal](https://github.com/wang-bin/mdk-sdk/wiki/Render-API) ([OBS](https://github.com/wang-bin/obs-mdk), [Flutter](https://pub.dev/packages/fvp), [Qt](https://github.com/wang-bin/mdk-examples/tree/master/Qt), [SDL](https://github.com/wang-bin/mdk-examples/tree/master/SDL), [GLFW](https://github.com/wang-bin/mdk-examples/tree/master/GLFW), [SFML](https://github.com/wang-bin/mdk-examples/tree/master/SFML) etc.) easily
-- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
+- [HDR display, HDR to SDR and SDR to HDR tone mapping](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr). You can use HDR display in [Qt6(6.6+ for macOS, 6.x for windows)](https://github.com/wang-bin/mdk-examples/tree/master/Qt/qmlrhi), [OBS Studio](https://github.com/wang-bin/obs-mdk) and more.
 - [Seamless/Gapless media and bitrate switch for any media](https://github.com/wang-bin/mdk-sdk/wiki/Player-APIs#player-setcolorspace-value-void-vo_opaque--nullptr)
 - Subtitle rendering, including ass, plain text, bitmap, closed caption
 - Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for [timeline preview](https://github.com/wang-bin/mdk-sdk/wiki/Typical-Usage#timeline-preview)