I'm specifically trying to convert a BBC One HD recording. The recording is made on a Humax PVR, called a HDR-FOX T2. The broadcast is a m2ts stream containing H.264/AVC video and AAC. MediaInfo reports this about the file, a sample of it can be downloaded from here:
http://myhumax.org/blog/?page_id=457
General : C:\BBC HD Intro Kung Fu Panda.ts
Format : BDAV at 10.1 Mbps
Length : 20.0 MiB for 16s 386ms
Video #0 : AVC
Aspect : 1440 x 1080 (1.778) at 25.000 fps
Audio #0 : AAC
Infos : 6 channels, 48.0 KHz
Language : en
Audio #1 : AAC
Infos : 1 channel, 48.0 KHz / 24.0 KHz
Language : en
Text #0 : DVB Subtitle
Language : en