On Sun, 2002-04-21 at 14:16, dfox wrote:
> That's quite impressive! I doubt mp3 would be neawrly that efficient. I
> did some mp3 to ogg conversions on some 22050 khz (old time radio type
> files) on one 12 meg file, ogg turned it into a 7 meg file. That's for
> about an hour's worth of audio (lo fi of course).
>
> Out of curiosity, about how long did oggenc take to do that conversion?
>
> And did you have to replace the sore CPU afterwards? :)
dfox,
You are right about the sore cpu. Look at the output of the time
command on this sample conversion I did:
____________________________________________________________________
[elx@tamriel tmp]$ time sox -V ggordon4-23-02b.wav ggordon4-23-02b.ogg
sox: Detected file format type: wav
sox: Chunk fmt
sox: Chunk data
sox: Reading Wave file: Microsoft PCM format, 2 channels, 44100 samp/sec
sox: 176400 byte/sec, 4 block align, 16 bits/samp, 249786368
data bytes
sox: Input file ggordon4-23-02b.wav: using sample rate 44100
size shorts, encoding signed (2's complement), 2 channels
sox: Input file ggordon4-23-02b.wav: comment "ggordon4-23-02b.wav"
Channels: 2 Rate: 44100
sox: Output file ggordon4-23-02b.ogg: using sample rate 44100
size shorts, encoding signed (2's complement), 2 channels
sox: Output file: comment "ggordon4-23-02b.wav"
363.00user 3.42system 6:09.99elapsed 99%CPU (0avgtext+0avgdata
0maxresident)k
0inputs+0outputs (294major+334minor)pagefaults 0swaps
[elx@tamriel tmp]$ ls ggordon4-23-02b.*
ggordon4-23-02b.ogg ggordon4-23-02b.wav
[elx@tamriel tmp]$ ll ggordon4-23-02b.*
-rw-rw-r-- 1 elx elx 20739735 Apr 24 00:20
ggordon4-23-02b.ogg
-rw-rw-r-- 1 elx elx 249786412 Apr 24 00:10
ggordon4-23-02b.wav
[elx@tamriel tmp]$
_______________________________________________________________
As you can see, it really sucks the cpu power. I was able to operate OK
while it was running, but I've got a 964 mhz Athlon here.
Sorry it took so long to get back with you, but by the time you asked
your question, I had already eliminated all wav's on my system; the one
above I had to generate on purpose so I could get you some decent
timing numbers. I think the result is well worth the intensive time; I
did'nt notice a lag here, but then I did'nt put any additional stress on
the cpu either. A 240 or so meg wav file converted to a 20 meg ogg in a
little over 6 minutes. :)
L8r, LX
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