They also don't have releasing standards to adhere to. As was mentioned earlier, most fansub viewers are watching on their computers, which can cope with newer

They also don't have releasing standards to adhere to. As was mentioned earlier, most fansub viewers are watching on their computers, which can cope with newer codecs, subtitle formats and container features with ease, where-as western TV rips are targeted at viewers using lowest common denominator hardware (and encoded according to a set of standards agreed between groups). Changes to those standards can cause significant upheaval, as happened when the standard def TV groups multilaterally agreed to switch from XviD in AVI to h.264 in MP4 container. AIUI, the tertiary anime groups, who take h.264/MKV/ASS releases and re-encode as MP4 with burned in subtitles, cater to those using lower spec hardware but who still want high def video.