TmpgEnc overcompress and output a 85% filled DVD5

[hyksoss]

Hi,

I originaly posted about unstable black bar but I think it's kinda due to convertxtodvd enabling automatic pan and scan on dvds it produces. Read the original post at the end.

I'm reusing this post since I'm new and I don't want to spam the board, but I want to post those questions since I believe I did my homework, I tried it several times with different options, I read a lot try some more and only when I just can't figure it out do I post.

I was disapointed by convertxtodvd because of the moving black bars (maybe because it flag discs for auto pan and scan) and also because subtitles position was not stable. Even when the black bars stopped moving subtitles would move up and down from phrases to phrases.

I tried tmpgEnc, I imported my h264 avi file, my two subtitles, I created a motion menu with a loop from the avi file. wow nice app! All my prior problems were solved.

The only thing I can't understand is the following:
Selected "smart rendering 1 pass VBR" "bitrate 6000" and "picture quality 90%"
which are the default values
Reported project size of 5479. (would be compressed to 4.7gig?)
tmpgEnc ask for the target size : 4.7gig DVD
the dvd ended up at 3.81 gig pgcedit report dvd5 full at 85%

Take 2
"cbr smart rendering" "bitrate 7000"
Reported project size of 6324 (would be compressed to 4.7gig?)
target size 4.7 gig dvd
the dvd ended up at 4.19 gig pgcedit report dvd5 full at 95%

Why overcompressing when it's not necessary?
How would you have avoided such testing to minimize compression and obtain a full dvd5?
Why won't such app minimize compression and use all the dvd5?
There is clearly something key here that I don't get


*original post about convertxtodvd
I want to create a dvd with a h264 avi file, I used convertxtodvd but the black bar at the bottom of the screen keeps moving up and down, from moment to moment it get thicker or thinner.

Anybody know why or could suggest another tool I could use to put a h264 avi to a DVD.

TMPGenc, if I have h264 codec installed? would it be able to create a dvd from the file?

Hyksoss

[guns1inger]

How much does it move by ?
Does the original move ?

ConvertXtoDVD is usually pretty reliable, and this isn't behaviour I have seen before. If the bar was moving one scanline then it is a resize issue, and perhaps an avisynth script might help. If it is shifting a lot it is something else.

Can you post a short sample ?

[hyksoss]

Hi,

It's small movements.
Could it be automatic pan & scan? It's hard to tell but it looks like it almost stopped when I setuped the dvd player to 16/9 letterbox instead of pan & scan. I think pan & scan is a feature where the players keeps resizing (zooming in and out) based on data about the action or something like that.
Pgcedit report that automatic pan and scan is enabled on the disc that convertxtodvd produced.
I tried to turn it off on the player and it seemed to almost get rid of the movements.


What I know for sure is that it's only the dvd player that does that. Nero showtime for example or any dvd player(software) produce a 16/9 with stable black bars.


I'll continue to investigate and will report here.

Hyksoss

[guns1inger]

To my knowledge, the automatic Pan and Scan feature has never been used by any DVD. ConvertXtoDVD certainly does not contain any P&S information. The automatic P&S setting is just a flag, and without the supporting data, does nothing. For every player than I have seen, Pan and Scan is implemented basically as :

4:3 source : display as 4:3
16:9 source : zoom centre to fill the screen

So if the source is a letterboxed image in a 4:3 frame, P&S does nothing of value (actually, P&S does nothing of value anyway).

It sounds more like your player simply has a problem converting 16:9 material to 4:3 for your TV, or your TV has a problem displaying what your player is giving it. ConvertXtoDVD converted material has certainly never displayed this symptom on any disc I have created with it, on any player that I have used.

Your player should be set to output 16:9 material as letterbox, if you have a 4:3 TV, or as Widescreen if you have a widescreen, or widescreen switchable, TV.