[mythtv-users] Re: nuv export speed

[John P. Mitchell]

Lonnie,

   I was listing the bitrates that the content was recorded in before
transcoding to VCD. You are right, there are only a few 'tweakable'
options when exporting to VCD.

   The part I find amazing is your 1:1 ratio of original fps to trancoded
fps. I wish I could get my 45 minute recording to trancode in 45
minutes. A 45 minute recording takes about 2 hours give or take some,
which is really lame for the amount of money I put into my Athlon 64.
You would think it would scream, and it should according to some
benchmarks I have looked at.

> On Mon, 2004-11-15 at 21:50 -0400, Jonathan Markevich wrote:
>> John P. Mitchell wrote:
>>
>> >   On the speed side of things, I have tried several machines to see
>> what
>> >difference that made on the process. I setup my XBox (733MHz
>> >Celeron/PIII Hybrid) running Xebian and I got around 7fps exporting
>> >640x480/2200kb video and 192kb/mp3 material to VCD without the denoise
>> >option. With the same exact material on an Athlon XP 2000+ I got about
>> >10fps. With my brand spanking new Athlon 64 3000+ I get about 15fps.
>> >
>> >
>> My sempron 2400+ is apparently pretty close to your XP 2000+, and I get
>> 7fps.  No denoising BUT I do use the crop feature.
>
> Are you using option 5 (Export to VCD)?  I've never seen choices on
> resolution size, mp3 bitrate, or cropping. If I choose "Export to SVCD"
> then it gives some of these options.  When I use K3B to burn a video CD
> from my exported files, it says that it is 352x240 MPEG1.
>
> Just for grins, I tried different "export" options on the exact same
> show (I've never done this before).  Here are the results:
> Show Length (after cutting commercials): 20:45 (min:sec)
> VCD: 352x240, MPEG1,  Export Time: 21:05
> SVCD: 480x480, MPEG2, Export Time: 41:57
> WMV: 640x480, audio bitrate 128, video bitrate 256, Export Time: 10:49
> DivX: 320x240, audio bitrate 64, video bitrate 256, Export Time: 8:24
> DivX: 640x480, audio bitrate 128, video bitrate 256, Export Time: 10:41
> DivX: 640x480, audio bitrate 128, video bitrate 512, Export Time: 10:47
> DivX: 640x480, audio bitrate 256, video bitrate 2048, Export Time: 12:05
>
> (I didn't use noise reduction or deinterlacing for any with that option)
>
> Interesting to note that the last DivX was half the time of the MPEG1
> (VCD), right in between the VCD and SVCD in size, and slightly better
> than the SVCD (MPEG2) quality.... while taking just over half the time
> to encode as the MPEG1.
>
>> Basically we have to figure out what Lonnie's got that we don't.
>
> Other than the SMP, I don't see anything..... unless it's my normal
> nuvexport export choice (and its resolution).  Well, maybe it's in my
> transcode/codecs.  I use transcode, and codecs, from plf.zarb.org (for
> Mandrake) which may (or may not) have some extra "goodies" in it.
>
> Lonnie
>
>
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Regards,
    John P. Mitchell <john at cepros.com>
    Email Sticker: My Boss is a Jewish carpenter
    http://www.GoboLinux.org | User #00010110