Skip to main content

Topic: Batch transcoding to HE-AAC-PS with this tool (Read 344646 times) previous topic - next topic

0 Members and 1 Guest are viewing this topic.
  • Firon
  • [*][*][*][*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #725
I do have to mention that Avery Lee is wrong about AVI not supporting VBR. AVI supports constant bitrate and constant framesize with audio. This is the reason why Vorbis cannot be used (it is neither). MP3/AAC frames are fixed in size (they always decode to the same # of samples), so they CAN be used, even in VBR mode.

http://www.mplayerhq.hu/DOCS/HTML/en/menc-...avi-limitations
  • Last Edit: 31 May, 2006, 12:43:19 AM by Firon

  • ChristianHJW
  • [*][*][*][*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #726
Avery is more referring to the Video for Windows framework, not to AVI the container itself. ACM codecs can not work for VBR, and his tool is strictly limited to using this interface for audio.

Christian
matroska project admin
Support matroska - the bestest vapourware project ! http://www.matroska.org

  • alexnoe
  • [*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #727
AVI supports constant bitrate and constant framesize with audio. This is the reason why Vorbis cannot be used (it is neither). MP3/AAC frames are fixed in size (they always decode to the same # of samples), so they CAN be used, even in VBR mode.

http://www.mplayerhq.hu/DOCS/HTML/en/menc-...avi-limitations


Isn't that what I've told for years? ... But OGM and MP4 zealots usually refuse to learn anything, which is the main problem.
  • Last Edit: 05 June, 2006, 12:10:13 PM by alexnoe

  • alexnoe
  • [*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #728
It's actually more correct to speak about constant frame duration instead of constant frame size. I didn't even notice that you wrote frame size and not duration 
  • Last Edit: 05 June, 2006, 04:11:21 PM by alexnoe

  • Firon
  • [*][*][*][*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #729
ChristianHJW: oh, really? I didn't know that.
Well, I presume he could provide support for handling VBR audio if he really wanted to anyway, VirtualDubMod and NanDub already proved it can be done.

And okay, I'll say frame duration from now on then alexnoe
  • Last Edit: 05 June, 2006, 08:15:28 PM by Firon

  • IgorC
  • [*][*][*][*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #730
There is a bug in FLAC encoding. It isn't lossless at least for transcoding from FLAC to FLAC.  Decompressed WAV files aren't bit identical . The same file encoded by the mediacoder at the same setings each time smaller when it transcoded FLAC to FLAC.

I know it's old discussion but I couldn't communicate to developers neither register on their forums.
  • Last Edit: 03 July, 2007, 12:14:57 PM by IgorC

  • optimus
  • [*][*][*][*]
Batch transcoding to HE-AAC-PS with this tool
Reply #731
MediaCoder Audio Edition 0.6.0.3998 is just release. It supports more encoders than ever. Check it out here:
http://mediacoder.sourceforge.net/device/audio.htm
MediaCoder the transcoder
http://mediacoder.sourceforge.net