On Wed, Feb 18, 2009 at 3:19 PM, Stephen Irons <stephen.ir...@tait.co.nz> wrote:
> Canon have shown themselves to be pretty moronic in other ways too. My > digital still camera can take videos, but records the sound at 11024 samples > per second -- 1 sample per second slower than 1/4 of 44100. Totem-xine plays > with stuttering audio, MPlayer makes the video speed up and slow down quite > obviously. ffmpeg used to reject the file, but the latest version from > Ubuntu works just fine. > > Now, I am not sure that there is anything in the .AVI or .WAV specification > that *prohibits* this unusual sample rate -- the sample rate is a 4-byte > integer. Software would have to resample to 44100 or 48000 to include the > sound on DVD or VCD, and it makes no difference to the resampling algorithm > what the before- and after- sample rates are. > > But sound card hardware, even the cheapest, can usually play at multiples or > submultiples of 44100 and 48000, so suddenly you *HAVE* to resample to be > able to play without problems. > > Or perhaps other movie player software pretends that the audio sample rate > is 11025, and adjusts the frame rate to 30.0027 fps by repeating one frame > every 368 (12s)? > > </OT_RANT> > > On the other hand, the camera plays with Linux very nicely over USB... > > > Stephen Irons > I'll check the video on my Canon S2IS. > > [1] Does anyone else read instruction manuals cover to cover? For pleasure? > For devices you don't own, but are thinking of buying? For devices you > aren't even thinking of buying? > > > Yes its a far better way of working out what a device can and cannot do than the moronic info available from most web sites or *gasp* shop assistants.
