Prob: Encoding to Mpeg2

[radkid]

Hi,

I captured some video to avi with the huffy codec, 29.97 fps, 720x480
I am encoding it to mpeg2 (Svcd) with Cinema Craft Encoder using:
mpeg 2 svcd multipass vbr (4 pass)
max bitrate 2450 kbps
avg 1932 kbps
min 0 kbps

I process the audio seperately
I extract the audio with virtual dub to a wav file then convert it to a MP2 file
The audio rate is 224 kbps

lastly I remux the audio + mpeg with bbMPEG

then i use VCDImager to make a bin to test the mpeg video on my standalone dvd player.

The video is very sharp on my tv, same if not better than the quality of the vhs tape. Problem is when there is motion e.g. when the camera pans the room or the characters in the video move a lot they are a little fuzzy and the video becomes UN-SMOOTH.

Anyone have any ideas why?
I have used various settings in cinema craft encoder and i've tried TMPGEnc - i find the mpeg2 video from TMPGEnc is way worse than CCE.

Is it my bitrates?

Any help is appreciated!

[Greenspock]

I'm no expert on this buy you may want to up those bitrates a bit... especially at that resolution! DVD's are about ~4000 kbps, give or take. Thats almost double of what your'e running at.

Cheers.

[radkid]

Hi,

I am creating an SVCD, as far as i know max bitrate is 2756 kbps

[mic_]

If it's SVCD you should set the resolution to 480x480 (https://www.videohelp.com/svcd)

[radkid]

Hey mic_
thanks for the reply


do you know any utils that will resize my 720x480 captured avi file to 480x480 ?

[FOO]

1. Your bitrate is probably too low

2. You have made an XVCD which by pure accident plays
on your player. The spec res. is 480 x 480.

3. TMPGenc will resize and encode in one step including the audio
and the muxing. Use a template.
There must be a wrong setting somewhere if TMPGenc output
looks bad. It usually is slightly better, but people use CCE
because it is faster.

[radkid]

Hey thanks for the post!

A few more questions for anyone with answers....

1) Is capturing at 720x480 with huffy a good idea or is it better to capture uncompressed?

2) How do i tell if i am creating an SVCD versus an XVCD ?

3) Is the max bitrate for SVCD 2756 kbps ?

TIA

[FOO]

If you can capture uncompressed, fine. Nobody but
IBM has a disk big enough for that, however. Most people
use Huffy or PicVideo MJPEG for AVI.

If you can capture to MPEG2 on the fly, you can save a lot of trouble.
You can author your capture directly to a CD or DVD without
hours of encoding.

An XVCD is just a SVCD that's out of spec - wrong resolution for example.
SVCD is MPEG2 480 x 480 around 2600 bps 44100 MP2 audio.

That bitrate is close. I dunno exactly.

[GordRocks]

I'm also not an expert by any means but if you've got jittery effects when there is panning or any kind of movement in the video but the still background appears to remain smooth it sounds like you need to de-interlace the video.

.....Gord

[FOO]

Never de-interlace video that you intend to watch on your TV.
It comes in interlaced, it goes out interlaced.

You motion problem may be wrong field order. That
happened in the encode. That can be fixed with
restream if you didn't encode de-interlaced. Takes 2 munutes to try.

[funkguy4]

Never de-interlace video that you intend to watch on your TV.
It comes in interlaced, it goes out interlaced.

You motion problem may be wrong field order. That
happened in the encode. That can be fixed with
restream if you didn't encode de-interlaced. Takes 2 munutes to try.

Why not deinterlace? If you get the order right then it looks good on the computer and the TV. The specs for VCD and SVCD and DVD all say progressive, i think.

[FOO]

Because deinterlacing Telecined material produces
frames with 2 unrelated fields glued together.
Filtering that is a mess for one thing.

I don't watch on my computer much but when I do I don't
notice problems
My refresh rate is 60 Hz. I don't know why video
players don't act like a TV and just display 60 fields.
Maybe some do. I wonder how to find out.

I notice Vdub has a "preview field mode" Progressive , A , B

[funkguy4]

Because deinterlacing Telecined material produces
frames with 2 unrelated fields glued together.
Filtering that is a mess for one thing.

I don't watch on my computer much but when I do I don't
notice problems
My refresh rate is 60 Hz. I don't know why video
players don't act like a TV and just display 60 fields.
Maybe some do. I wonder how to find out.

I notice Vdub has a "preview field mode" Progressive , A , B

For telecined material you can do Inverse telecine. I know that TMPGEnc can do it.

[radkid]

So,

how would i know what field order to use and how would i specify that ?


TIA

[funkguy4]

So,

how would i know what field order to use and how would i specify that ?


TIA

When you load the video into TMPGEnc it generally figures it out itself.

[FOO]

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