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I want to know if is possible to change the Iframe GOP (every 15frames default)
The reason is because I cannot make frame accurate chapter in authoring DVD.
I work in PAL (25fr/sec) and it should be better (and logical) if the Iframe would be every 5 frames.
Sure you can change this. No problem so far. But on shorter GOPs, you need more Bitrate to get high quality.
You can also force TMPGEnc to set frames you want as I-Frames. That's done by using force picture type setting.
And on some Authoring tools like DVDLab, you are able to use Frame-indexed Chappter settings.
What you intend to do will seriously increase the size of the output if you use a VBR method and will also need a higher bitrate if you use a CBR method. Surely a chapter every 15 frames is enough, that's almost one every half a second.
If you need the odd specific chapter then use the 'force picture type setting' as suggested.
Thank for your answer.
15frsec is a 30frsec (NTSC) splitting second.
PAL is 25frsec. GOP every 10fr or 5fr will be better for PAL videos.
What, exactly, is affected from this change? Quality? Jittering? Blocking?
Pixelation?
>GOP every 10fr or 5fr will be better for PAL videos.
No not really. I don't know why you think this.
In fact it can have a detrimental effect on the quality.
Also the frame rate doesn't really matter to the GOP length. A GOP is created per the set GOP length or at a scene change.
DVD's are limited by the bitrate they can handle.
Use too many I-frames in a GOP and the bitrate runs short causing blocks and pixelation effects.
Most commercial DVD's use a length of 12-15 frames in a GOP.
I would prefer 15 myself because of the better compression and higher bitrates that can be used when using 4.7GB disks.
>Use too many I-frames in a GOP and the bitrate runs short causing blocks and pixelation effects.
Sorry that may not make sense to you. I know what I was driving at in my head, but explained it wrong.
What I mean is that each GOP has an 'I' frame, the shorter the GOP the more 'I' frames are created. The more 'I' frames the higher the bitrate needs to be and thus larger file size and/or pixelation.
The reason of my question is to have more chances to choose the right I-frame (for chapter) without take the beginning or the final of a cross dissolve or a video effect.
Probably, at every 12fr/sec, could be the right way for PAL_video. What is your opinion?
Well I suppose you could get away with it as long as the movie isn't too long. However as has already been mentioned you can force an 'I' frame wherever you want, so if you where to say add 20 chapters to the movie, you could decide where those chapters would be without sacrificing compression efficiency.
The only way would be to just try it and see how things turns out.
I'll make a try and then I'll notice to you the results.
However the movie is 32min long and, for the "Murphy's Law", some chapters go in the middle of 10fr cross dissolve....
TMPGEnc Plus Ver. 2.521.58.169
Encoding a .mov to MPG2 at highest quality settings.
The program will start to encode and anywhere from and hour to three hours into the video, I get an error message simply stating that the program has encountered an error and must shut down. After a minute or so, TMPGEnc closes. This has been very frustrating because it did work for a awhile. Has anyone else had this problem?
I wish we were able use older versions with our Plus license. They worked great.
Specs:
Pentium 4 on Windows 2000
Use Avid DVXpress to edit video and output to quicktime file.
Final length of program is anywhere from a half hour to forty five minutes. My temporary drive has at least thirty gigs. That should be enough.
Thanks.
I created an avi file with slide show movie maker, 320x240 23.976 f/s 24bit divx. when I try to create an mpg the pictures do not show up on the preview or the disk only the music. I have tried the vcd ntsc and ntsc film neither will work.
I am trying to convert an avi movie to vcd. The problem I encounter is that there are two audio tracks, and the default one is not english. Tmpgenc chooses the default audio stream from the avi file when I really want the english stream. Is there any way to work around this?
There are some minor grammar errors in dialog boxes. After a disc is finished writing, a small dialog box pops up that says "Writing". This should say "Writing Done" or "Writing Finished". The same for the DVD Author program, after it creates the DVD folders.
This is a small request, and could confuse new users. The first time I saw this box say "Writing", I thought it still needed to continue to write, but actually it was finished.
Am joining mpeg2 quality (DVD) files together and after merge join finishes the new file has no audio .. I've pressed the correst button (version 2.51 free)
anyone have any solution . it dosnt always do this .. but when it does it will always do it to the group of files I'm trying to merge
How about making it so we could replace the "Highlight" layer with a "Rollover" layer; in "Specify image for thumbnail frame" dialog?
You could have the "Rollover" layer be just like the "Thumbnail" layer except that it can be invisible until mouse-over, like the "Highlight" layer. A text rollover layer would be nice too, but it's already there with the ability to make a text layer the "Highlight" layer. ( an interface to do it in TDA would be nice though) Of course, you could just make a still image with your text on it and load that with a "Thumbnail" type "Rollover" layer
Personally, I would like a "Layer Edit" selection under the regular "Edit" selection of the right click menu for a thumbnail on the "Edit menu theme" page.
The current bottom "Frame" layer should also be made available so that you can
select its image and parameters. A text option here, including the ability to paste from the clipboard, would be good.
A "Rollover" layer that can replace the current "Highlight" layer over Text
items, would be teriffic. You could have a text of the title and when you mouse-over it the "Rollover" layer image or clip would appear.
All the elements seem to be there we just need TDA setup to allow us to use them.
Is there a way to turn multiple AVI's into one mpeg-2 file?
I'm trying to make a DVD of around 13 20 min Episodes of a TV series, but if I do it 1 at a time the file size gets way too big
Yes you can with TMPGEnc. Just load the AVI file. Then select output to one mpeg file. But 13, 20min episodes is too much for just one 4.7GB DVD. You would have to choose very low bitrate. Or use TMPGEnc 3.0's XDVD option to squeeze more video on the disc. Best to put on multiple DVD's or buy expensive dual-layer DVD recordable discs.
I have tried multiple AVI but there is no way to add more than one file. Once I add the first file the source area "locks" or goes grey. Some more detailed instructions would be appreciated.