Corey Hickey wrote:
Hello,
I've found an Apple h.264/AAC trailer that doesn't have any sound. I don't know if the problem lies with mplayer or with faad, but I figure somebody here will be able to tell for sure.
The file is available at: http://movies.apple.com/movies/disney/thechroniclesofnarnia/chroniclesofnarn...
A full 'mplayer -v' log is attached.
I think I've managed to trace the problem down, though I don't yet know how to fix it. This file appears to use a version 2 audio track, which mplayer can't parse. Look at libmpdemux/demux_mov.c, line 665: // TODO: fix parsing for files using version 2. As it is now, version 2 tracks get parsed incorrectly, which results in a variety of different audio problems (I have a few other files with version 2 tracks). Is there any documentation around on the structure of version 2 audio tracks? This document seems to be outdated: http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_... Anyway, I'll look at tomorrow and, if nobody can find anything, I'll try bugging Apple to see if we can get some specs so somebody can fix this bug. -Corey