DSPguru
6th January 2004, 22:53
1. faq #19 had been updated. resampling issue is now solved in bsn.dll v0.21.
2.
Originally posted by bond
the mp4 container has support for such a postgain flag (volume element), but dspguru never implemented support for that :(
it was discussed here (http://forum.doom9.org/showthread.php?s=&threadid=62848)
i disagree of the way you put this.
as issue had been further discussed here (http://forum.doom9.org/showthread.php?s=&threadid=53863), the problem is not with the way the postgain data is stored, but with the application of gain during playback.
mkv, for instance, can hold aac audio, and (one day) should be able to support postgain for aac, just like it now supports BeSweet's postgain of ogg audio.
now, when muxing aac audio to mkv from a mp4 source, it really doesn't matter whether the postgain value is stored as a "volume" element or a comment element (like in ogg), as this is only temporary - until muxing. the only important thing is that it is being read by the transmuxer on the muxing process and by the aac directshow filter on the mkv playback.
2.
Originally posted by bond
the mp4 container has support for such a postgain flag (volume element), but dspguru never implemented support for that :(
it was discussed here (http://forum.doom9.org/showthread.php?s=&threadid=62848)
i disagree of the way you put this.
as issue had been further discussed here (http://forum.doom9.org/showthread.php?s=&threadid=53863), the problem is not with the way the postgain data is stored, but with the application of gain during playback.
mkv, for instance, can hold aac audio, and (one day) should be able to support postgain for aac, just like it now supports BeSweet's postgain of ogg audio.
now, when muxing aac audio to mkv from a mp4 source, it really doesn't matter whether the postgain value is stored as a "volume" element or a comment element (like in ogg), as this is only temporary - until muxing. the only important thing is that it is being read by the transmuxer on the muxing process and by the aac directshow filter on the mkv playback.