A Universal Video Converter
When we try to play an uncommon format video, such as M4V, we might receive the message "The player might not support the file type or might not support the code that was used to compress the file." To fix this issue, we need to convert the M4V video to MP4 or AVI, or other formats that Player supported. Download free videos from YouTube.
Wise Video Converter supports converting YouTube videos and all popular video formats to AVI, MP4, FLV, WMV, RMVB, MKV, WebM, and MPEG2. For example, convert MOV to MP4, convert M4V to MP4, convert MP4 to MKV, and convert MP4 to WebM.