<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div><br><blockquote type="cite"><blockquote type="cite"><br></blockquote><blockquote type="cite">Just a note to say I am seeing the same issue on recordings from BBC HD<br></blockquote><blockquote type="cite">freeview channel.<br></blockquote><blockquote type="cite">I get "AFD Error: Unknown audio decoding error" in the logs.<br></blockquote><blockquote type="cite">I thought clipping the recording after the switch to the main program<br></blockquote><blockquote type="cite">from the ident would help<br></blockquote><blockquote type="cite">but does not.<br></blockquote></blockquote><div><br></div><div>I've reported the bug on the ffmpeg tracker, and one of the ffmpeg devs appears to have recreated the issue. He's identified it as a problem with the aac decoder, rather than the latm element it seems. See:</div><div><br></div><div><a href="https://ffmpeg.org/trac/ffmpeg/ticket/200">https://ffmpeg.org/trac/ffmpeg/ticket/200</a></div><div><br></div><div>That being said, clipping passed the ident (once the recording has finished) does fix the problem for me when it occurs. I haven't been clipping inside mythfrontend though. I'm using dd to snip the first n megabytes off the front of the file, and then place the (slightly truncated) file back in the same place.</div><div><br></div><div>If you're clipping in mythtv, it could set the video and audio parameters by looking at the start of the file and that then doesn't fix the problem.</div><div><br></div><div>For info I'm using the current atrpms packages for myth 0.24 on Fedora 14.</div><br><blockquote type="cite">Looks like it may not just be Myth experiencing these issues:<br><br><a href="http://www.whathifi.com/news/update-bbc-experiments-with-1080p-broadcasts-on-freeview-hd-but-viewers-complain-of-audio-dropo">http://www.whathifi.com/news/update-bbc-experiments-with-1080p-broadcasts-on-freeview-hd-but-viewers-complain-of-audio-dropo</a><br><br></blockquote><br>Hmm - that's interesting. The symptoms certainly seem to fit (i.e. the problem occurs at programme transitions between idents). I haven't checked whether the video format for the problematic sections are different (i.e. 1080i vs 1080p) but I'll have a look.</div><div><br></div><div>I've noticed the problem less this last week, but it's certainly still there. The one thing that pretty much always causes me a problem is the BBC HD ident with the scenes from 'Life' in it (polar bears and penguins). The scenes look great, but ffmpeg/myth isn't handling the transition in and out of that ident well.</div><div><br></div><div>Glenn</div><div><br></div></body></html>