RichardR – 38 mins ago  » 

If I change a file’s mp3 extension to mp2 it plays in VLC but not in Audacity.

If I change to ts it plays in the Films and TV app and VLC but Audacity does not import or open it.

open the file in vlc and use VLC’s convert files option to create a .mp3 (mpeg1 layer 3 file). VLC can convert both audio and video compression codecs.

Despite the file extension the audio contained is not mp3 (mpeg 1 layer 3 but mpeg1 layer 2).

Video files from HD Humax boxes have a .ts container (transport stream). The video for HD recordings is actually .M2ts a format used for blu-ray disc, for SD recordings it’s mpeg2 (used for DVD discs).

You need to understand the difference between the container and the actual codecs combined in the container for Video, Audio, Subtitles, Audio description etc.

https://en.wikipedia.org/wiki/Comparison_of_video_container_formats

The letters and numbers after the dot can include lots of different digital compression codecs.

Simple example xxxx.mp4 may or may not have video content compressed using the mpeg4 video compression codec.

The conversion of the audio container is very simple and lossless. Look up the difference between container and the contained audio and video contained.

https://www.vlchelp.com/convert-video-audio-mp3/

RichardR – 1 day ago  » 

Quote:

open the file in vlc and use VLC’s convert files option to create a .mp3 (mpeg1 layer 3 file). VLC can convert both audio and video compression codecs.

Thanks graham, that’s really helpful. vlc is working through my files now.

I take it the converted files have resolved the problem ?