Isobuster shows the following folders and files on the disc produced by Winfast:
There are three format names, ISO, UDF, and IFB. Under both ISO and UDF we have a VIDEO_TS folder containing files VIDEO_TS.BUP, VIDEO_TS.IFO, VIDEO_TS.VOB, VTS_01_0.BUP, VTS_01_0.IFO, VTS_01_0.VOB, and VTS_01_1.VOB. Under ISP and UDF we also have folders called ARCSOFT which contain another folder called AUTHOR20, which contains VTS_01_1.VOBU, and more folders Printer and Label.
Under IFB we have just VIDEO_TS containg the same files as above.
I am using DVD-RAM discs.
When I produce a disc using ImgBurn the format shown by Isobuster looks the same as that of a commercial disc, viz. AUDIO_TS folders (empty) and VIDEO_TS folders under both ISO and UDF, and just VIDEO_TS under IFB. Although the structure looks the same as the commercial disc, the ImgBurn disc is not accepted by my Panasonic, while the commercial disc plays normally.