- From: Dr. Markus Walther <walther@svox.com>
- Date: Mon, 17 Aug 2009 11:38:25 +0200
Max Romantschuk wrote: > I'll chime in here, having done extensive work with audio and video > codecs. With current codec implementations getting sample- or > frame-accurate resolution is largely a pipe dream. (Outside of the realm > of platforms dedicated to content production and playback.) Especially > for video there can be several seconds between keyframes, frame-accurate > jumps requiring complex buffering tricks. Quick feedback: I completely agree it is illusory to guarantee sample-accuracy accross codecs, and never meant to imply such a requirement. The much weaker goal I would propose is to support at least one simple lossless audio format in this regard (I am not qualified to comment on the video case). Simple means 'simple to generate, simple to decode', and PCM WAVE meets these requirements, so would be an obvious candidate. For that candidate at least I think one could give sample-accurate implementations of subinterval selection - tons of audio applications demonstrate this is possible. -- Markus _________________________________________ SVOX AG, Baslerstr. 30, CH-8048 Z?rich, Switzerland Dr. Markus Walther, Software Engineer Speech Technology Tel.: +41 43 544 06 36 Fax: +41 43 544 06 01 Mail: walther at svox.com This e-mail message contains confidential information which is for the use of the addressee(s) only. Please notify the sender by return e-mail or call us immediately, if you erroneously received this e-mail.
Received on Monday, 17 August 2009 02:38:25 UTC