DAR and SAR issues Roku Ultra 4800x
I have an SD video that ffmpeg reports correctly as Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 720x480 [SAR 32:27 DAR 16:9], 29.97 fps, 29.97 tbr, ...
Forum Discussion
If it is the new 2020 Roku ultra (and some newer Roku TVs), There is an issue with the graphic drivers that does not handle SD screens correctly in non Scenegraph channels. If you can, switch to using Scenegraph video node and see if that plays the content correctly
Yes it it is the new Ultra. Unfortunately I believe I need roScreen for 2DGraphics for the app I am working on since I render a lot of full screen bitmaps and I need sub second response which I believe is an issue with roSGScreen.
