Need Help using AVStoDVD - Output size is HUGE

[jagabo]

There's no such thing as a 1.304 DAR in MPEG encoding. If he imports the MPG files directly from Mpeg-VCR they should have the correct DAR flagged.

The MPEG 2 spec only has three defined display aspect ratios: 4:3, 16:9, 2.21:1 and square pixel PAR.



Well OK, it's possible to have a 3.04 DAR with square pixel encoding and the appropriate frame size. I don't see how AVStoDVD can be getting the DAR wrong with a 352x480 frame size. Unless MPEG-VCR is adding a sequence_display_extension with the wrong values.

The OP should upload a small sample of his MPEG-VCR files.

[_MrC_]

I don't see how AVStoDVD can be getting the DAR wrong with a 352x480 frame size. Unless MPEG-VCR is adding a sequence_display_extension with the wrong values.

Well, AVStoDVD relies on MediaInfo to read video and audio info. I don't know if that is a MediaInfo bug or a badly muxed mpeg2 file. I agree that a short sample from the OP could help.

BTW I have already received some 720x480 mpeg2 flagged as 1.5...



Bye

[jagabo]

BTW I have already received some 720x480 mpeg2 flagged as 1.5...

Either they are flagged as square pixel or use a sequence_display_extension (most likely someone incorrectly flagged D1 video as square pixel when they encoded). A DVD recorder would never flag MPEG video that way.

[Ronny G]

@Ronnie

The source mpeg2 file is not 100% DVD compliant because the DAR (Display Aspect Ratio) is reported as 1.304 and not 4:3 or 16:9. Thus AVStoDVD (that is a bit choosy) is re-encoding it.

Thanks, I'll try that.
Am I right to assume that the DAR is 1.304 because the source was recorded in SPP mode instead of SP?
I'm going to download the latest version now. Will let you know...

[Ronny G]

The OP should upload a small sample of his MPEG-VCR files.

I'm not sure how to do that? I've never uploaded a video before--only pictures.
I could try.
How long does the sample have to be?

[Ronny G]

Should I un-install my old version of AVStoDVD before I install the latest version?

[jagabo]

I'm not sure how to do that? I've never uploaded a video before--only pictures.
I could try.

Look below and you'll see a big button labeled "Upload Files/Manage Attachments" below the Quick Reply edit box.

How long does the sample have to be?

For purposes of checking the AR just a few seconds. It's best if you can find a section of video with something of a known shape. Like a globe, ball, tire viewed directly from the side, etc.

[Ronny G]

Here's a sample 10-second video clip.

[_MrC_]

Should I un-install my old version of AVStoDVD before I install the latest version?

Yes, it is better.

About the short sample (Mediainfo report, advanced mode):
PAR (pixel aspect ratio) = 1.778
FAR (frame aspect ratio W/H) = 0.733 (352/480)
DAR (display aspect ratio) = PAR x FAR = 1.304

To be 100% DVD compliant:
PAR = 1.818
FAR = 0.733
DAR = 1.333

The trouble is with PAR that is just a little smaller than the NTSC Half-D1 4:3 standard value (1.778 vs 1.818).

With the workaround I have explained before, you should fix it directly in AVStoDVD.



Bye

[jagabo]

Yes, the video has a sequence_display_extension that indicates the flagged 4:3 DAR is contained in a 360x480 frame. Since the data is actually only 352x480 the display aspect ratio of the available picture is only ~1.304. Ie, 4 / 3 * 352 / 360.

[Ronny G]

I downloaded the latest version and followed your instructions and now the title output size is good. It is 605MB. Thank you!
Now, my next question is:
Every time I add a title I get the message that MPEG2 video stream is found and that it is strongly recommended that I index it.
Press yes to create index and demux the audio.

My question is: Do I have to do this? Thank you for your help. Ron

[_MrC_]

You should do indexing if the mpeg1/mpeg2 source title is not DVD compliant, or if you want to recompress it.

Your VCR mpeg2 files are an exception, thus it is better to say 'No' to indexing and then alter the DAR.



Bye

[Ronny G]

Thanks to everyone for your help! It's working now.