Slow encoding

[jonaskn]

videora 2 takes about 8 hours to encode a dvd, with the old videora it only took about 2,5-4 hours double the bitrate but a bit lower resolution.
Does anybody have a suggestion how to speed op the encoding.

Jonas

[Red Kawa]

The old default setting was MPEG-4 at 320x240.
The new default setting is H.264 at 640x480.

Encoding with H.264 will take a lot longer since it is a move advanced codec that can give better quality at smaller filesizes.

Here's how the codecs rate in terms of encoding speed (slowest to fastest):
H.264 VGA > H.264 QVGA > MPEG-4

Here's how the codes rate in terms of quality (at same bitrate)
H.264 VGA > H.264 QVGA > MPEG-4

So if you want to encode your videos faster, you should use an MPEG-4 profile.

Also pick the most optimal resolution for your viewing preference:
Watching strictly on iPod: QVGA / 320x240
Watching on TV using iPod: VGA / 640x480

[jonaskn]

This doesn't help much because I'm already encoding i MPEG-4, as I was in the old videora.
I used to encode using this profile:

640x360
MPEG-4 > A-VBR
One Pass
Bitrate=1500kbps
Min=128
Max=2000
Framerate=29.97
Audio bitrate=160kbps
Stereo
Sample rate=input

Now I'm using the premade profile: MPEG-4 768kbps stereo/128kbps.
this profile auto resize's to 640x480, does this slow down the process compared to a fixed resolution?

Is there any reason why this takes twice the time it took before? or am my computer just acting weird?

Jonas

[samie81]

I am also having slow encoding times.

I did the double pass MPEG 4 640x480...It used to take 4-5 hrs and now it takes 18 hrs. I know the old setting was 320x240 but I'm surprised there is such a difference!

When I finally got the video to MPEG 4 it wouldn't load to my iPod because the video can't be played.

Am I doing something wrong?

[Red Kawa]

The slow encoding is a result of the profiles used.
Please see our latest blog post for complete details:
http://www.redkawa.com/blog/post.php?t=486

By using the profiles we mentioned, encode times should be exactly, if not a few seconds faster, than 0.9x encodes according to our tests of both programs. But remember you are trading off some quality by doing this.