With the latest ffmpeg Problem : no sound. [0x99ab1f8] avcodec decoder debug: ffmpeg codec (Windows Media Audio Professional) started Without the latest ffmpeg No problems. [0x107dfd28] dmo decoder debug: DMO codec for WMAP may work with dll=wma9dmod.dll [0x107dfd28] dmo decoder debug: found DMO: WMAudio Decoder DMO