@Shekh,
I've been running some tests with VDFM (40716), transcoding native 4K 10-bit 422 clips (from a Panasonic GH5 camera) to various 10-bit 422 formats, including Grass Valley HQX using the GV codecs pack:
https://www.edius.net/hqx.html
Although the codec
per se supports 10-bit and 8-bit, 8-bit appears to be the only option with the HQX codec as it presents in the VDFM Compression listing.
Is this a limitation of the VFW codec, as accessible by third-party applications, or is there any possibility of accessing the 10-bit variant ?