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Pegasys Products BBS [ Sorted by thread creation date ]
Hi all, i am having audio problems.... im converting .avi(715mb) to.mpg(2gigs), and when im done converting the video is perfect!, but no audio. Now i understand that garbage in will reap garbage out, but the avi file is really good quiality. i play it as avi and everything is fine, only whenn i convert it itdrops the audio. i convert as vcd ntsc,cbr standard format, video type non interlace, aspect ratio 1:1 vga, no filters, and ste at high quiality. any1 have any suggestions? thanks, dave
Audio is probably Ac3.
Download the AC3ACM filter, which you can find the link to somwhere on this BBS, or extract the audio to a wav with Virtualdubmod or Virtualdub_ac3.
Lately I find that it is better to use a Little tool called "Decompress.exe" to decompress the audio instead of useing Virtual-Dub to extract it, On occation I will still get sync problems when extracting VBR Mp3 to wav even when doing it the Proper Prescribed way...This tool comes with a VCD encoder called AVI2VCD but the encoder isn"t that good but the decompress tool is very handy...Cheers
ok, dumb question, but..............split the video and audio, then put in the seperate files when i use tmpegnc? Second is i trid to install AC3 ACM Decompressor running win xp, and it messed up my other pc(thank god i didnt run it on the main 1............lol) anything xp compatable? sorry, but i am a newbeeeeeee thanks again!!
no never mind i was wrong, my sondecided to run a program he d/l from the net n got me a virus. when i went to install the program it stated that it hasnt passed the win xp compatability, i almost always ignore this message. but it was a virus that got the other pc, not the program, i jumped the gun. sorry
I am currently evaluating the DVD authoring product.
I would like to know if there is any way of adding an introduction video prior to the initial track page. For example 20th Century Fox would first show their world famous logo before going to the menu section.
If this facility is not achievable using the current version is it planned?
Under "Create Menu," then under "Display Menu Settings," you can set the first pull-down menu to "Play the first track" when the DVD is loaded into the player. The first track will play, then the menu will be shown. However, someone else asked here a couple of days ago about a problem with this: that first track still shows up in the menu, which is not what you want in a case like you describe.
as a final product i need to produce an edl for onlining at a separate place. my source materials are generally svhs analog tape. these svhs tapes are dubbed down from timecoded betacam masters. the svhs tapes have no timecode that can be read by my computer. they only have a visible burn in window (no ltc or vitc). older versions of premiere allowed me to assign timecode to captured clips (ctrl-k in premiere 6). i simply looked at the first frame of each clip and assigned the same number that was visible in the burn in window. the current version of premiere (pro) lacks edl support. i can't believe they call it "pro." it also seems that software other than premiere cannot read premiere's assigned timecode.
how can i timestamp my avi files with timecode that will match my visible burn in window and will also be generally if not universally readable in other software? recompressing the files is something i'd like to avoid but if that's the only way i'd consider it.
re-capturing is likely not an option as the sources are very large libraries of older materials.
Your Question Has very Little or nothing at all to do with Tmpgenc..This is a Tmpgenc Formum and all questions have to Pertain to tmpgenc in some way..Maybe you should look for a forum that has more to do with Editing than Encodeing...good Luck
wasn't sure if there might be a way of resaving
the described files through tmpgenc or something
like it and having the resave also restamp them
such that the timecode would read properly. if
anybody knows if such a thing can be done i'd
love to hear about it. and likewise, if anyone
knows it can't be done please let me know so i
can go away quietly.
Go to "options" to "Enviromental settings" to "Vfapi Plugins" and Raise the "Direct show File reader" to "2"..Now your Files should Load Normally but you also need the Correct codecs installed...Cheers
Don't EVER install one of these codec packs! Not unless you want to seriously mess up your system.
Jaysus, these things cause more problems than they solve and anybody who is PC savvy will tell you this, just ask the guys in other forums who are experienced coders.
Installing every codec known to man on your system is NOT a good idea, the people who put these codec packs together have no idea what they are doing. They cause lock ups, conflicts and can interfere with other software which relies on it's own codecs.
You only need to install the codecs you require, so keep it minimal and you will have far less problems.
Why do you think there are so many people posting problems on this BBS? Many of them are related to and caused by these dreaded codec packs.
its the lazy newbie way i know:
but too tell you the truth i havent had any probs with (nimo or k-lite codec) no locks-ups, no slow downs, no codecs getting in the way of each other and i have 36 audio codecs and 40 odd video. now wait, i know i dont need nearly half of them but who really cares, none of them are conflicting each other or slowing down my system in any way, i find all my codecs work well together not a sign of a conflict to be seen. if anyones gonna be slowing down because of conflicting software its me, im on a P.O.S p2 350 128mb ram im slow enough already :/
the reason i gave this option is because i tried the way you suggested(ashy) and remember having no luck with avi formats (or any other format for that matter), but after installing the packs tmpgenc is my one and only for any format conversion.
If you dont want all the codecs that come with the packs, which is fair enough, there is a program called 'GSpot codec information' it will tell you exactly what codecs you need
Hi, I'm using the English version of DVD Author 1.5, but I would like to enter Japanese text into the menus. Is this supported, or must I use the Japanese version?
This is the only feature that I am missing, otherwise this would be the ideal DVD Authoring program!!!
I have made several hundred sucessful SVCD's. I keep my hard drive defragged and clean. My last couple of attempts(however) have produced SVCD's with bad video for about 5 to 10 seconds and sometimes a loud squeak. afterwards it all returns to normal.
It appears to happen at the same time no matter which movie I am watching.(about 1/3 of the way into it). I have cleaned my stand alone player with one of those disc cleaners. I have burned them from 1X to 12X(all with same results).
My only guess is the media I have been using. I believe I switched to Memorex from Sony cause they were on sale. Can the media really make a difference? even when I thought Memorex was a good brand?
Ok, if I abort an encoding job, will the mpg that has been created thusfar be useless, or will it play up until the point it was aborted? Thanks in advance.
By cutting a 1,4GB MPG2 File (1h54min) into peaces the cutter stopps after 57 min (the cutting end is set to 59min). Also if I try to start a cut after 57 min up to the end it produces errrors. when I start at 55 it ends up after 2 mins?
Well First off Tmpgenc"s editor is only officially supposed to be for Files that were originally encoded By tmpgenc ,With that Said Tmpgenc"s editor Can at times be a Little Buggy and I do not think there is anything really you can do about it accept use a Different Mpeg editor....
Thanks 4 your informations, originally the files has been converted and merged with tmpgenc's editor, I've cutted them now with TVTool, a nice but generic tool (www.musclesoft.de/combatman/).
4 all other things TMPGEnc is realy nice!
Ok, I've been experimenting with some templates and have noticed something: on my videos, the macro blocks, etc, that I noticed in my earlier post apparently disappear when I switch from I-frame only mode to IBP mode.
Is this supposed to happen? I thought that creating an I-frame only video would result in the HIGHEST quality possible?
My goal is to create the absolutely highest quality video possible, I don't care if it takes 50 hours to encode 1 hour of video.
Can anyone shed some light on why this might be happening? My only explanation is that for some reason at 8mbps, with I-frames only there is not enough bit-rate to go around for 30fps. Does not seem right though since that equates to 26.6KB per frame, which at 720x480 should result in a decent quality JPEG image...
You need to remember that a frame containing motion and detail is a lot harder to compress than a still image or low detail image and therefore requires more bits per frame to maintain the quality of the image without macroblocks, so while your calculations may work for still images it's a whole new ball game when you involve motion.
If what you are saying was true then we wouldn't need VBR encoding methods or B and P frames and we could just treat each frame of video as a full frame still image and use the same amount of bits to encode each frame.
I'm not sure what's going on, but whenever I cut small portions of a file out using this program, it will reduce the resolution and bring the file to about 1/10 of the size (when I'm only clipping a few minutes here or there).
I'm quite sure it is in this step, because if I don't do it, it will remain a very large file.
How are you Clipping the Files??? If you are useing the "Merge & Cut" to edit your Files (Which is the only way to do it in Tmpgenc unless you are re-encodeing) There is Absolutly No Change in the Video At all ,No resolution Changes No Quality Changes No Changes at all accept for the length that you Clipped off....
I don't know why where or how, but if I just go straight through to the part where you make the vcd, it'll be a few hundred mb's too large, but after cutting a few minutes it suddenly becomes like a 100mb file and the quality is very low.
Maybe I'm doing something else that I'm not aware of...
I thin you need to explain the steps you are making. It doesn't seem to me like you are cutting at all. Cutting would not have this affect, it is impossible. It seems more like you are changing some other setting, like the source range perhaps.
Ok, I've been experimenting with some templates and have noticed something: on my videos, the macro blocks, etc, that I noticed in my earlier post apparently disappear when I switch from I-frame only mode to IBP mode.
Is this supposed to happen? I thought that creating an I-frame only video would result in the HIGHEST quality possible?
My goal is to create the absolutely highest quality video possible, I don't care if it takes 50 hours to encode 1 hour of video.
Can anyone shed some light on why this might be happening? My only explanation is that for some reason at 8mbps, with I-frames only there is not enough bit-rate to go around for 30fps. Does not seem right though since that equates to 26.6KB per frame, which at 720x480 should result in a decent quality JPEG image...
I frame Doesn"t nescesarilly Create the Highest Quality, I frames are Just Less compressed than B and P frames Pluss there are no Mpeg Video standards that Support I frame only Files so the Use of them for DVD/VCD/SVCD is not supported....Cheers
You've answered your own question. If you want to create a high quality I-frame only MPEG then you are going to need a high bitrate, compression will be less and the file size will be huge and in no way will fit a DVD.
>this supposed to happen? I thought that creating an I-frame only video would result in the HIGHEST quality possible?
The highest quality possible would be complete uncompressed frames of which you might get about 5 mins worth on one DVD if your lucky (248Mbps to create a series of uncompressed 720×480 images at 30fps in 24-bit RGB color)
>I frame Doesn"t nescesarilly Create the Highest Quality, I frames are Just Less compressed than B and P frames Pluss there are no Mpeg Video standards that Support I frame only Files so the Use of them for DVD/VCD/SVCD is not supported....Cheers
Actually there is no limitation in the DVD/VCD/SVCD standard which frames have to be used in a GOP, but in DVD there is a limit to the amount of frames in a GOP whether they be I-frames or P/B frames. However it's not pratical for DVD because the data rate would just be to high for the DVD player to handle.
Actually, I use the I Frame only option to be able to edit MPEGS at the frame level, since TMPEnc products (encode and DVD Author) are not good enough to edit
anything else at frame level (they can only cut at an IFrame).
I capture at 8mbs, run it though TMPGEnc with I frame only and 8mbs CBR (it seems very fast), then splice and dice using DVD Author, then run the resulting VOB's though DVD2AVI and back through TMPGEnd and do a VBR encoding at a lesser bitrate.
Why don't you just use a proper frame accurate editor such MPEG2VCR. It's a lot less finicky about formats than TMPG, can do multiple edits on one file and when used properly gives good results.
It surprises me too.
I wouldn't think that 8Mb/s is a high enough bitrate for I-frame only encoding. You must be losing quality doing this.
8Mb/s is good enough for for GOPS that contain P,B frames because the compression is much higher for these frames and therefore 8Mb should be plenty for each GOP, but I-frames don't compress too well and the data rate per second would have to be quite high to maintain any sort of quality with full resolution files.
I would estimate the bitrate required to encode an I-frame would have to be at least twice as high as a B or P frame 15-16 Mb/s, probably higher.
You may want to take a look at the page below. This is not the first one that I have seen which suggests a minimum of 25 Mb/s for I-frame only encoding.
I brought up the ULEAD Mpeg2 file and saw that its VBV buffer was set to 112 not 224 as TMPGEnc has its set. I encoded a TMPGEnc Mpeg2 using the NTSC DVD template, only changing VBV from 224 to 112. When I was finished, I looked at it in BitrateView and it said the VBV was 56???!!!
Does the BitrateView program you gave me accurately display VBV settings or is it halfing them?
Oh and I'm delighted to say that this fixed my skipping problem. But I'm still confused about the mismatch between programs...
>Can I try a VBV setting between 224 and 112? Does it have to be a divisor of 56?
You can use any value it doesn't have to divide by 56, but why change it if you know it works fine?
Because it is now showing to be a DVD compliant stream with a VCD's VBV...
Why do so many things not make sense? Where is the middle ground on this process? I've got a friend that's been in the broadcast business for 30 years and I now understand his hatred for DVDs. Sure this is fun from a tweakers point of view, but what ever happened to just hitting record after you've edited? Are standards being withheld by the industry because how can any program say they are giving you compliant settings when they don't work like all the DVDs that you've played in your player before?
"The encoding scheme is responsible for eliminating any overflow or underflow condition that the decoder buffer may encounter. This is accomplished by examining a hypothetical decoder buffer, i.e., video buffer verifier (VBV), and computing lower/upper bounds on the number of bits assigned for a picture type. The lower bound should be a large enough nonnegative number to prevent the overflow condition, while the upper bound should not be larger than a predetermined value above which the VBV buffer will underflow."
The above statement refers to an upper and lower setting for VBV. TMPGEnc only has one setting. What is TMPGEnc's setting referring to, upper or lower bounds?
I suppose you misunderstand it's explanation. I posted an indepth explanation of the VBV buffer a while ago, you may still be able to find it on this BBS.
The explanation above refers not upper and low limits which are set as such, but to the size of the actual buffer regarding how it handles the amount of data passing through it.
For example if it is set too high you will get an under flow of data this is the upper limit. If it is set too low you will get an over flow this is the lower limit.
To explain it quick, imagine the buffer as a pipe, you can set this pipe to a certain size by changing the VBV buffer setting thus changing the amount of data that the pipe can hold.
Lets say we set the VBV to 224. When the pipe (buffer) fills to this capacity data will flow from one end through to the other. If data is not fed into the pipe (buffer) fast enough to fill the buffer because it is too large the buffer will empty as the decoder from the other side takes the data from it. When this happens there will be a shortage of data to the decoder side thus causing an interuption to smooth playback and hence the jerky playback and resumes as soon as the buffer fills again for data to flow through to the decoder.
A similar thing happens with a pipe (buffer) is too small, but instead this time too much data is being fed too fast into the pipe (buffer) before the decoder on the other side can deal with the data. This causes the data too overflow out of the pipe (buffer) causing a loss of data to the decoder and again playback problems such as stuttering where the data has been lost.
This is the simplest way I could think of explaining it. I hope you understand it better now.