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Why Render method is getting called many times for one frame

New Here ,
Sep 07, 2021 Sep 07, 2021

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I am developing an AE plug-in on Premiere Pro and doing analysis of Render() method. Its observed that Render() method is called approx 5 times for one frame and height/width is different from image size(refer 00000006  height = 264 from below log). 

log print from Render()
00000002 24.69498253 [1328] height = 313
00000003 24.69502640 [1328] width = 469
00000004 24.69525528 [1328] height = 313
00000005 24.69528389 [1328] width = 469
00000006 24.77376556 [1328] height = 264
00000007 24.77377701 [1328] width = 395
00000008 25.58960533 [1328] height = 313
00000009 25.58962440 [1328] width = 469
00000010 26.42020416 [1328] height = 313
00000011 26.42023849 [1328] width = 469

Please let me know

1. Why Render method is getting called many times for one frame.

2. Why width and height is different?

Log:

PF_EffectWorld *inputP = &params[0]->u.ld;

int width= (int)inputP->width;
int height= (int)inputP->height;

Thank you,


 

TOPICS
Formats, SDK, User interface or workspaces

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correct answers 1 Correct answer

Adobe Employee , Oct 04, 2021 Oct 04, 2021
Frames can be requested in a variety of sizes/formats, for a variety of purposes. Without knowing exactly what user interactions led to that series of render requests, I can't comment meaningfully.

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Adobe Employee ,
Sep 08, 2021 Sep 08, 2021

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To what sort of media has your effect been applied? 
To what output format are you being asked to render? 

 

Perhaps this, from the AE SDK Docs, is relevant? 

 

PF_InData

Premiere Pro handles field rendering differently than After Effects. While field rendering, PF_InData>field gives the current field being rendered, ignoring whether or not PF_OutFlag_PIX_INDEPENDENT flag was set.

In Premiere Pro, effects receive the quality setting of the monitor window in PF_InData>quality. This differs from After Effects, where the source layer’s quality setting is provided here.

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New Here ,
Sep 08, 2021 Sep 08, 2021

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Hi Bruce Bullis,

Thank you for the information. I am using only one PNG image of dim(469x313).

PF_InData->quality and width & height of output buffers is not set.

Creating only sequence and applying effects.

Please check the flags and parameters set from the plug-in.

  

GlobalSetup (
PF_InData *in_data,
PF_OutData *out_data,
PF_ParamDef *params[],
PF_LayerDef *output )
{
PF_Err err = PF_Err_NONE;
PF_Handle globH = NULL;
my_global_dataP globP = NULL;
AEGP_SuiteHandler suites(in_data->pica_basicP);

out_data->my_version = PF_VERSION( MAJOR_VERSION,
MINOR_VERSION,
BUG_VERSION,
STAGE_VERSION,
BUILD_VERSION);

out_data->out_flags = PF_OutFlag_DEEP_COLOR_AWARE |
PF_OutFlag_I_EXPAND_BUFFER |
PF_OutFlag_I_HAVE_EXTERNAL_DEPENDENCIES |
PF_OutFlag_PIX_INDEPENDENT |
PF_OutFlag_NON_PARAM_VARY |
PF_OutFlag_SEND_UPDATE_PARAMS_UI;

out_data->out_flags2 = PF_OutFlag2_SUPPORTS_QUERY_DYNAMIC_FLAGS |
PF_OutFlag2_SUPPORTS_THREADED_RENDERING |
PF_OutFlag2_FLOAT_COLOR_AWARE |
PF_OutFlag2_SUPPORTS_SMART_RENDER |
PF_OutFlag2_SUPPORTS_THREADED_RENDERING;

//pixel format

(*pixelFormatSuite->ClearSupportedPixelFormats)(in_data->effect_ref);
(*pixelFormatSuite->AddSupportedPixelFormat)(
in_data->effect_ref,
PrPixelFormat_VUYA_4444_32f);
(*pixelFormatSuite->AddSupportedPixelFormat)(
in_data->effect_ref,
PrPixelFormat_BGRA_4444_32f);
(*pixelFormatSuite->AddSupportedPixelFormat)(
in_data->effect_ref,
PrPixelFormat_VUYA_4444_8u);
(*pixelFormatSuite->AddSupportedPixelFormat)(
in_data->effect_ref,
PrPixelFormat_BGRA_4444_8u);

}

 Render (
PF_InData *in_data,
PF_OutData *out_data,
PF_ParamDef *params[],
PF_LayerDef *outputP )
{

//getting frame data in ARGB format

//I will read data and apply upsampling algorithm here

//Why width and height is different?

//Why Render() method is getting called multiple times for one frame 

}

Thanks! 

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Adobe Employee ,
Sep 09, 2021 Sep 09, 2021

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The image aspect ratios of the two sets of dimensions are pretty close; 1.498, and 1.496.

 

What user action provokes the 5 render calls? Do you get them upon initially applying the effect? 

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New Here ,
Sep 09, 2021 Sep 09, 2021

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Render() is getting called after applying the effect for first time.

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New Here ,
Oct 03, 2021 Oct 03, 2021

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Hi Bruce Bullis,

I used different frame size (1920x1080) but again different frame size is observed from Render API.

I am sharing the log info for your reference.

00000001 0.00000000 [7548] Unformated error
00000002 3.99971676 [7548] Unformated error
00000003 8.06445503 [7548] input img width = 1920 , input img height = 1080
00000004 8.06588364 [7548] input img width = 1920 , input img height = 1080
00000005 8.09279537 [7548] EDSR
00000006 8.10323811 [7548] input img width = 599 , input img height = 337
00000007 36.04203033 [7548] Unformated error
00000008 40.04400635 [7548] Unformated error

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Adobe Employee ,
Oct 04, 2021 Oct 04, 2021

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Frames can be requested in a variety of sizes/formats, for a variety of purposes. Without knowing exactly what user interactions led to that series of render requests, I can't comment meaningfully.

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