LSMASHVideoSource cannot open ProRes YUV444

[stax76]

my internet connection is to slow for a 350 MB upload

LoadPlugin("D:\Projekte\VS\VB\StaxRip\bin\Apps\Plugins\avs\L-SMASH-Works\LSMASHSource.dll")
LSMASHVideoSource("D:\Video\Samples\Misc\ProRes YUV444.mp4", format = "YUV420P8")

General

Complete name             : D:\Video\Samples\Misc\ProRes YUV444.mp4
Format                    : MPEG-4
Format profile            : Base Media
Codec ID                  : isom (isom)
File size                 : 349 MiB
Duration                  : 10 s 240 ms
Overall bit rate mode     : Variable
Overall bit rate          : 286 Mb/s
Encoded date              : UTC 2016-04-29 18:25:40
Tagged date               : UTC 2016-04-29 18:25:40
Writing library           : Apple QuickTime

Video

ID                        : 1
Format                    : ProRes
Format version            : Version 1
Format profile            : 4444
Codec ID                  : ap4h
Duration                  : 10 s 240 ms
Bit rate mode             : Variable
Bit rate                  : 286 Mb/s
Maximum bit rate          : 306 Mb/s
Width                     : 1 920 pixels
Clean aperture width      : 1 920 pixels
Height                    : 1 080 pixels
Clean aperture height     : 1 080 pixels
Display aspect ratio      : 16:9
Frame rate mode           : Constant
Frame rate                : 25.000 FPS
Chroma subsampling        : 4:4:4
Scan type                 : Progressive
Bits/(Pixel*Frame)        : 5.522
Stream size               : 349 MiB (100%)
Writing library           : Arnold & Richter Cine Technik
Encoded date              : UTC 2014-07-02 09:44:35
Tagged date               : UTC 2016-04-29 18:25:40
Color primaries           : BT.709
Transfer characteristics  : BT.709
Matrix coefficients       : BT.709
matrix_coefficients_Original: RGB