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TMPGEnc 2.5 (Free or plus version) BBS [ Sorted by thread creation date ]
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?
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
I've got some uncompressed avi files (no audio) that i'm converting to MPEG-1s. At the default settings, Video-NTSC 352x240 at 29.97 fps, they become a bit dark and blocky after being converted. Its not significant on brighter clips, but the clips I have that are somewhat dark to begin with get much worse.
Are there settings I should change to fix this, or am I gonna have to live with it?
Make sure 'Output YUV data as basic YCbCr not CCIR601' is NOT checked under the 'Quantize Matrix' tab.
Try installing FFDSHOW and put a check in 'Raw video' as the decoder for your file.
If that doesn't work then simply use the colour correction settings to alter the balance of the output under the 'Advanced' tab.
Please help a relative newbie to video files.
I've used TMPGEnc to successfully combine short MPEG files into one.
I have a set of MPEG files, which all play fine in Quicktime, that I try to combine. TMPGEnc tells me that one of them "is not an MPEG file". I didn't create them, but I believe they were all created the same way, and again, they all play fine and look similar in Quicktime.
Can someone tell me what I can check for and how in order to figure this out? And if there's a way to do it with freeware?
The other day I tried to use Tmpgenc 2.5 to edit a mpg-2 file I had captured. When I tried to open it I got the file unsupported or can not open or is not supported error. However, if I start powerVCR or PowerDVD I can open the file (or any mpeg-2 file for that mater) and edit it. I didn't have to do this in the past so I assume some setting has been altered but I have no idea which one. It seems like Tmpgenc will only use the cyberlink Mpeg-2 codec if another program is also using it.
Not being an expert myself, but have use tmpgenc 2.5 for a while, and I believe that MPeg files are not supported. It can only creat mpeg files (1+2). I'm sure one of the experts like Ashy or minion will guide to towards a program that will. I would re-post what exactly you want to do with your mpeg files first.
Hope this helps.
mickC.
yup, now when i try to convert some movies, it says stream write error, when it has done about 35% from analzynig. Is there anyway to fix this problem?
Last time when I had a codec problem, I think it was Ashy that recommended I use an ffdshow with VFW. Well recently, I upgraded to the newest version of that ffdshow version October 12, 2004. All my XviD files play in Media Player Classic but when I try to open them up in VdubMOD, it says the decompressor for XviD can't be found and that VFW is needed to view XviD in Vdub. I went in ffdshow and disabled XviD there. Then I went in the VFW configuration menu and enabled XviD. But still, it won't work in Vdub. Why is this?