Adjusting mins. on Bit rate tab?

[ima2hd]

When I go to change the minutes lets say to 140 mins. from 125 mins. for 2-80 min. Cdr's... DVD2SVCD still makes 3 bin/cue files? I'm not sure why it is doing this. I was of the understanding that 70 mins. of svcd video/audio could be placed on a 80 min. cdr? Any help here would greatly be appreciated. Thanks all. Will

[hoozdapimp]

first off you posted in the wrong forum...all problems go to the basic section...but since your a n00b ill forgive you for that :)

secondly, you need to post your log file. we have no ideas what settings your are using. one possibility for your error is that you're using tmpge to encode your video and this is a known issue for tmpge (sometimes it makes the files too big).....

but other than that we need to see your logfile before you can expect to get some help.

[ima2hd]

Thanks for the reply. Well I'm not using TMPG it is way to slow. I'm using CCE 2.50, but I'll try it again and paste my log. Maybe the bitrate tab thinks i'm using 74 min. cdr's. My understanding of the bitrate settings is it is basically telling you to use 80 min. cdr's with this much time or 74 min. with this much time? But I could be wrong about this. Thanks Will

[markrb]

Moved to basics forum.

Actually how many minutes depends on what bitrate you use, but most here would agree any more then 40 or so on one disc and the bitrate will fall so low that video starts to look poor. If you want more then that go for a VCD instead of a SVCD.

It very well could be that based on your settings DVD2SVCD just could not place what you set for the bitrate on 2 cd's.
Did you check Min Avg? If you did uncheck it.

If you used 1 pass VBR there is a known issue with that and cd sizes.

Whenever you have an issue always post your DVD2SVCD_Log.txt file using cut and paste. We can tell allot from that file that trying to explain just doesn't do.

We really can't help much without that log.

Mark

[anth6000]

I use 4 pass vbr with cce. I checked and i have not checked the min. average box. Unfortunately I was not able to post my log as I had my dvd2svcd set to auto shutdown. I have had to change to another user name and password to reply to this post & I don't know why. I do have a off the topic question for you Mark I have used both cce & tmpg. It seems tmpg gives better image quality during scenes with not much motion, but during motion alot of blockiness. CCE 2.50 on other hand seems to hold together well during alot of motion, however the overall image quality is not as good.. alot of what I would call video noise around edges of everthing. Is there anyway I can tweak either cce to give me better quality or tmpg to do better with motion? I recently did Cats & Dogs a very short movie only around 85 min long so I used tmpg set my bitrate for 85min. for two 80min./700mb discs. I still got blockiness during motion in addition my second muxed file was 717mb so I had to overburn to make this work which I hate to do since Nero typically won't finalize the disc with overburning, however it will play back I have found out, but overburning tends to make my Lite-on 32x go nuts when it gets to the end of burning a over burn. Btw I am also using Tmpgenc v 2.56 plus version any of your ideas or thoughts here would greatly be appreciated. Thanks will

[markrb]

I don't use TMPG for MPEG-2 (SVCD) I only use that for VCD's (MPEG-1).

Several imortant things to remember. Bitrate matters. Not so much Min, but more the AVG and MAX. Too low and you have issues. The more movement the more bits required. Until we see a log it's hard to see what happened.

I also adjust Image Quality Priority to 22-25 depending on my mood. I really have no data to prove there is much difference between those numbers. Personally I do believe it's heads above the default of 17. It tends to reduce blockiness around foreground objects.

If you use VBR I never go below 4 passes myself or I will use CBR on shorter material that won't add to the number of CD's over a VBR encode.

Next time you do an encode post a logfile from a CCE encode that you are not happy with and we will take a look. I really can't help with TMPG.

You really should read the Stickies. If you did you would know that 806mb's will fit on a 80 minute CDR without overburning. It's video data and so does not have the overhead that normal data has. Make sure that the bitrate tab says 800 at all of the cd sizes for 80 minute cd-r discs.

Why are you burning the mpg video and not the CUE/BIN files? You loose chapters and subtitles if you don't burn these. Again read the stickies it's all explained there.

Mark

[anth6000]

markrb: I have in fact read the stickies and I know that more than 700mb can fit on a 80 min. cdr.It was just with this last encode I did with Cats & Dogs using tmpg I set it for 2 80 min cdrs at 86 min. Since this was so short I had to change the 3rd line to 800 from 740. When the svcd process completed & I went to burn.. according to Nero I had 717mb on the second disc (actually it was bigger than this I realize). I had to enable over burn. I take the muxed files and vcd template everything I do. Maybe I just have something messed up. I have just tried doing a 103 min movie using cce vbr 5 pass image quality set at 22. It made 3 muxed files or would of made 3 cue/bin files if I would of had that enabled. I simply changed the the 4th line on the bitrate to 103 min instead of 125. Possibly this is the wrong procedure? Thanks for the info I'll try setting the image quality as high as 25. I'm probably to much of a novice to do anything with the max min & max ave.settings. However someone suggested using the cvd settings and and increasing the min. max. and max average.. the image quality i got was awfull the max average staid at around 2000. The bit rate changes when i change the amount of min. of course so
I was assuming changing the min would change my image quality without making more cue/bin files. Thanks Will

[markrb]

There is no need to drop the size of the cd unless you are going to be using the smaller cd-r discs. The bitrates across the bottom are limators and the encode will not go above or below those settings even if you have the extra space. By making the CD size smaller you may have forced DVD2SVCD to use a smaller AVG bitrate then it could have. AVG is based on a calculation of the video's time and the amount of room on the CD's while staying at or below the MAX AVG setting.
Also don't mess with the minute settings unless your video falls very close to one of the numbers. In that case give the video at least 5 minutes each way from what you think it is. This way you are assured the video falls into the section you think it should. many times the stated time on the box and in the IFO are just plain wrong. If you give it more then 5 minutes that will not hurt the encode either.

By doing the steps above you are assuring yourself of the highest possible bitrate for the number of cd's you specified.

Watch the range of bitrates to the right of the movie length and number of cd's. This is the range that you AVG is being calculated to be. So using the default settings:
If your movie is 105 minutes long, you set it to use 2 cd's and your audio(it does matter) is set to 224 on 80 minute cd-r's then your AVG video bitrate will be between 1946 and 1509 and actually closer to that 1946 since the minutes are close to 100. Many consider this an acceptable range. I would say the low end of 1509 is too low and would want to add another disc, raise the CD size using 90 or 99 minute discs or lowering the audio bitrate to 192 to grab a few extra bits for the video. The upper range is fine for most people.
If you change that to 740 as you say you did look what happens to the AVG range it drops from the 1946-1509 to 1781-1377. Pretty low, pretty quick.

I also asked why were you burning the mpg files? You should be burning the Bin/Cue files instead.


Mark

[anth6000]

markrb : This has really hepled me out alot I won't fiddle with the default setting from now on unless I really need to. What i was actually trying to say is for Cats & Dogs I changed it from the default settings on line 3 from using two 740 discs to using two 800mb discs thinking this would increase my bit rate. The reason I don't burn the bin/cue files is because I put a vcd header on my muxed files, so it will play in any dvd player or any newer dvd player anyway. I have had good results using this technique. The image quality still doesn't seem to be as good in cce as with tmpg except cce handles the motion much better. Sometimes I will want to stretch things a bit to keep it on two discs. For expamle I tried encoding windtalkers 134 min. I changed the setting from 125 to 134, unfortunately it still made it for 3, 700mb/80min cd's. Thanks Again, Will

[markrb]

For Windtalkers that says it was 134 I would have left the 5th line alone that says from 125-163 use 3 cd's. I would have only changed the 740 to 800.
By changing it to 134 exactly if the movie is 134 and 1 second it will jump to the next section. Most likely the movie is really like 138 to 140 since many times don't include the credits etc...

Always give yourself at least 5 minutes more then the stated time so it won't jump.

Putting that long a movie on 2 discs will give you poor results IMO, but some say it's fine. That bitrate for 2 discs was under 1400 for a 134 minute movie, way to low.

Mark