Hi,
There still seem to be issues with HLS playlists that have missing headers. Do those missing headers make that particular server useless for HLS content or can GiP still use the playlists with the bad header info?

Also when downloading with HLS modes, ffmpeg automatically converts to .mp4 or you can use to skip the conversion or . Are the conversions to mp4 and mkv lossless conversions or is it better to use raw?

Unusable playlists are skipped. Conversions to mp4 and mkv are lossless. Audio/video streams are re-muxed, not re-encoded.

Quote:Unusable playlists are skipped

Does that mean that we are skipping the "vod-hls-uk-live.bbcfmt.vo.llnwd.net" server for most HLS requests then?

As far as mkv and mp4 goes, is there a recommended format to choose or are they both as good as eachother?

Playlists are skipped, not servers. Format is your choice. Pick mp4 if you want metadata tags.

For radio is there a preference between m4a or mp3 after download? Is one better than the other? I know mp3 is the more widely accepted format but is m4a better?

See the options list in wiki. Again, format is your choice. There is no reason to convert to mp3 (which means re-encoding) unless you have an old device that won't play m4a.