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Pegasys Products BBS [ Sorted by thread creation date ] << < Prev.   [ 575 / 986 ]   Next > >>
Classify Product Title User name Reply Last update
Question TE25 A curious unexpected result while lowering bitrate sndtek 5 2003-01-15 05:43:31
Question TE25 How to enconde MP2 using three or four pass VBR DarK Shool 3 2003-01-15 02:10:59
Question TE25 Video CD - NTSC and NTSC Film. What's the difference?? sentsuru 1 2003-01-14 08:41:29
Request TE25 Will TMPGEnc/Plus get any faster ? It's kinda slow right now... Luca 3 2003-01-15 12:22:23
Question TE25 Out of place problem Fess 4 2003-01-15 17:03:07
Question TE25 Sharpen Filter With Field base only for interlace videos ? Greloc 0 2003-01-13 23:52:10
Question TE25 Are frame voids (ie LBox black bars) encoded into MPEG stream? sndtek 9 2003-01-15 18:25:44
Question TE25 Blank Screen emmjay 0 2003-01-13 20:46:12
Question TE25 scan line out of range(404) gary 0 2003-01-13 19:08:19
Question TE25 AC3 Wierdness Dan Phillips 1 2003-01-13 21:36:52
Question TE25 TMPGEnc file size handling issue Jason 4 2003-01-16 16:50:00
Question TE25 DLL and runtime problems - ntdll.dll Mazz 3 2003-01-13 21:36:44

Pegasys Products BBS [ Sorted by thread creation date ] << < Prev.   [ 575 / 986 ]   Next > >>
Question - TE25 - A curious unexpected result while lowering bitrate No.33402
sndtek  2003-01-14 16:04:07 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

While making 2 minute test encodes of a medium action 640 x 272 source onto 480 x 480 SVCD, the resulting MPEG file size went from 28MB (with CQ VBR 5000/0 @ 30) to 34MB (with 4000/0 @ 30)!

Why would the file size go up when the bitrate went down?


Keoki  2003-01-14 21:13:32 ( ID:hrjgs1vjd3g )   [ Delete / Reply with quotation ]

run the simple multiplexer on the output, it will strip buffer packets added to the file (bug in the latest version of the software)


sndtek  2003-01-15 00:10:41 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

OK. I'll try that tonight. Does this padding problem also exist in the Plus 2.5 version?


Keoki  2003-01-15 00:48:42 ( ID:hrjgs1vjd3g )   [ Delete / Reply with quotation ]

run the simple multiplexer on the output, it will strip buffer packets added to the file (bug in the latest version of the software)


Keoki  2003-01-15 00:50:36 ( ID:hrjgs1vjd3g )   [ Delete / Reply with quotation ]

1st sorry for the double post.

its a bug w/ 2.59


sndtek  2003-01-15 05:43:31 ( ID:rajsqph3.yw )   [ Delete / Reply with quotation ]

>run the simple multiplexer on the output, it will strip buffer packets added to the file (bug in the latest version of the software)

I tried that but the file actually grew another 40KB. Also, I was a little off with the original file sizes: 36.5MB vs 38.4MB. However the file still grew over 2MB dispite the max bitrate being reduced from 5kbs to 4kbs!



Question - TE25 - How to enconde MP2 using three or four pass VBR No.33398
DarK Shool  2003-01-14 15:05:52 ( ID:ihqnxcrvflr )   [ Delete / Reply with quotation ]

Hi

Can I Encode MPG2 using 3 or 4 pass vbr ???


I dont find that option


B_Racer  2003-01-14 15:40:55 ( ID:gxmkoa4dlnj )   [ Delete / Reply with quotation ]

TMPGEnc provides only 2pass VBR.
Multipass? Maybe in a later Version.


Guspaz  2003-01-14 22:18:27 ( ID:krli4ehdgr. )   [ Delete / Reply with quotation ]

I'm not certain, but I don't believe that is how multipass encoding works.

From what I understand, in multi-pass encoders the first pass is spent gathering information (motion data?) that is then used to calculate which bitrates should be used one which scenes to ensure the average bitrate is met.


Minion  2003-01-15 02:10:59 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

Different encoders Do it differently, I think Tmpgenc does the Analizeing and averageing the Bitrate all in the First Pass and Encodes in the second pass ,Were I think with CCE it analizes in every Pass and encodes in the last pass..



Question - TE25 - Video CD - NTSC and NTSC Film. What's the difference?? No.33396
sentsuru  2003-01-14 05:45:38 ( ID:sbezb30us6n )   [ Delete / Reply with quotation ]

Hi. Can anyone pls tell me what's the difference between the NTSC (29.97fps) and the NTSC Film (23.976fps) that are listed on the settings???

I converted some avi movies to mpeg (with NTSC Film selected) and burned them onto vcd, but my vcd can only be played on some DVD players while can't be played on some?? Is there anything to do with the NTSC/-Film issue??

Thanks very much.


B_Racer  2003-01-14 08:41:29 ( ID:gxmkoa4dlnj )   [ Delete / Reply with quotation ]

29.97 FpS is the native NTSC-Format.
23.98 FpS is for progressive Film, converted from Cinema.
While Playing the Player does a Field-Duplicating (3:2- oder 2:3-Pulldown) to get 29.97 FpS.



Request - TE25 - Will TMPGEnc/Plus get any faster ? It's kinda slow right now... No.33392
Luca  2003-01-14 01:25:44 ( ID:cgnhukiqymj )   [ Delete / Reply with quotation ]

Considering that DiVX encoding under VirtualDub it's at least 3 times faster (with similar time consuming precise filter at max settings) .. and considering that MPEG4 encoding requires way more computation than MPEG1&2 do.. is there any chance to see a 250-300% performance improvement and some serious assembly SSE/SSE2 optimization for your algorithms ? Quality is high but if MPEG4 at max quality settings can be encoded 3 times faster then your code should be revised to give the same encoding speed, at least.


Guspaz  2003-01-14 22:23:52 ( ID:krli4ehdgr. )   [ Delete / Reply with quotation ]

TMPEGenc is one of the fastest MPEG-1 encoders there is. It's a simple fact that encoding MPEG-1/MPEG-2 content is much more processor intensive than encoding MPEG-4 video. I'm not certain why, but my guess is that when encoding, an MPEG-4 file, the bitrate is probably about 600kbit, whereas when encoding an MPEG-2 file the bitrate is probably well over 2000. Even VCDs encode at 1150kbit.

Now, I'm sure TMPEGenc will get faster in the future as optimizations continue to be added, but for the moment, be content with the fact that it's as fast as it is... It's several times faster than Nero's MPEG-1 encoder or AVI2VCD's encoder.


Guspaz  2003-01-14 22:25:34 ( ID:krli4ehdgr. )   [ Delete / Reply with quotation ]

Oh, and to speed up encoding you can mess with the motion search quality setting, it makes an enourmous difference. With the default setting, a 45 minute source takes about an hour on my machine to encode to VCD, but with the motion search on highest quality it takes 3-4 hours. Setting the motion search to the fastest setting may improve your encode times substantially at the cost of quality (more artifacts)


Luca  2003-01-15 12:22:23 ( ID:efhdyxrttpg )   [ Delete / Reply with quotation ]

The bitrate has little to do with encoding time. And you're wrong, MPEG4 requires much more calculations than MPEG1 and MPEG2.



Question - TE25 - Out of place problem No.33387
Fess  2003-01-14 01:05:01 ( ID:1kl8t4ktd1r )   [ Delete / Reply with quotation ]

Hello,

Yes, I'm aware this is a TMPGEnc forum but many of you guys use VirtulDub and I have a unusual problem in VirtualDub

I wanted to cut clips from 2 seperate huge Avi's. I did the cut and saved at 'direct stream copy' video/audio for both clips. Then I tried to append them and got this error:

'Cannot append segment: The video streams have different sampling rates.

'file info' on the first avi was 9.997fps(100034 us)

'file info' on the second avi was 9.996fps(100045 us)

I re-cut the first clip at 'direct stream copy' and changed the framerate 9.996fps.

I still cannot append the clips.
The 'file info' on the re-cut clip is now9.996fps(100040 us)

Is the (100040us) and (100045us) difference the reason I cannot append?
How do I make them the same?

How do I make the first clip (100045us)? Because if the fist clip is 9.996fps(100040us) and the second clip is 9.996fps(100045 us) is won't append.

Thanks for any help VirtualDub users...
Fess


sndtek  2003-01-14 02:57:07 ( ID:rajsqph3.yw )   [ Delete / Reply with quotation ]

I have not seen that exact problem but why not try to "convert" the 2nd clip to the same rate. Yes I know that it is already at that rate but perhaps VDub will do to the 2nd clip what it did to the first and then they will both be the same. That should let you append them.


Minion  2003-01-14 02:58:13 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

You are On the Wrong track here...the Message says that the 2 files have different Sampleing rates Not Frame rates..the sampling rate is the Frequency of the audio..I have gotten this Problem when trying to Append 2 files into 1 file and it is a Bitch to fix But you have to make a copy of the File useing "Direct stream Copy" for the Video and "Full Prosessing mode" for the audio and set the Sampling rate to the Proper sampleing rate and Make a copy of each file then join the 2 New files..


Fess  2003-01-14 16:48:37 ( ID:lpkgk9shi0. )   [ Delete / Reply with quotation ]

Hello,

Sndtek, you were right....it work. By simply setting the framerate to 9.996 an open the first avi/cut/save at direct stream copy and then opening the second avi with the same setting as above has made the framerates identical (both are 9.996fps(100040us).

Minion
The error was "The video streams have different sampling rates". Frequency of audio was the same (11025hz, 1Mono, 8-bit). So most likely it was the framerate that was the problem.
I have cut an pasted your post anyway because when that issue arrives, I won't have to grind my teeth...

sndek, Minion...thank you
Fess


sndtek  2003-01-15 17:03:07 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

Glad I could help!



Question - TE25 - Sharpen Filter With Field base only for interlace videos ? No.33386
Greloc  2003-01-13 23:52:10 ( ID:sdlb6yqvwe. )   [ Delete / Reply with quotation ]

Im usually use the Sharpen filter when i encode Mpg1 with the 352*288 Resolution
in the Sharpen Filter option there is a option to enable field base .When i use that option the Video gets even more sharp it seems...but are that option only intended to be used with mpg2 interlaced videos..how about Mpg1 352x288 ?
is it normal to use the field base option in mpg1 too ?

anyone ever use Field base option when using sharpen filter in tnmpgenc ?




Question - TE25 - Are frame voids (ie LBox black bars) encoded into MPEG stream? No.33376
sndtek  2003-01-13 22:34:54 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

Hi All,

OK. Here's the senario...

I use the Clip > Arrange > Center (custom) to plop a 640x272 avi (no black bars in source) onto a 480x480 frame. I enter the parameters to get what I want visually and naturally any area of the frame not covered by my avi show as black.

Now the question...

Does TMPGE encode the top and bottom black into the compressed video stream? Or does it only encode the active area and simply "tell" the player to blank-out the unused portions of the frame?

This is important (IMHO) because although a solid black field will compress to almost nothing, the transition from that black field to the active video will (I believe) take up valuable bandwidth.

Thanks


Minion  2003-01-14 02:51:10 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

yes it does Encode the Black bars as Part of the image...


sndtek  2003-01-14 03:40:10 ( ID:rajsqph3.yw )   [ Delete / Reply with quotation ]

Thanks for the info.

Too bad you can't just encode the active video and let the player place it on the requested frame size on-the-fly. Kind of how a player reformats an anamorpic 16:9 for a 4:3 monitor. Actually, it would be an easier process for the player because it would not have to scale the video. Only add the blanking. Oh well...

Thanks again.


mpeg obsession  2003-01-14 03:41:03 ( ID:0v38fp4fqco )   [ Delete / Reply with quotation ]

The the transition from the black bars to the picture doesn't take bandwidth if the picture has a size that is multiple of 8.


sndtek  2003-01-14 04:29:03 ( ID:rajsqph3.yw )   [ Delete / Reply with quotation ]

So if TMPG encodes the voids as part of the stream anyway, what are the pros/con between letting TMPG add the black verses giving it a aspect ratio corrected, full frame source which includes the black void (ie frameserving it from avisynth all ready to encode)?


Minion  2003-01-14 05:03:09 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

I don"t think that it really makes a Differance But it would Be interesting to do a Test to see what encoded faster and which used the given bitrate more efficiently?...


Guspaz  2003-01-14 22:20:46 ( ID:krli4ehdgr. )   [ Delete / Reply with quotation ]

If you're working on a 16:9 source, you may wish to make an anamorphic video.

Some TVs/DVD players are capable of taking a 4:3 image and scaling it down to 16:9 adding their own black bars. My TV is capable of doing this, and it increases the pixel density while doing it resulting in a sharper output image.


sndtek  2003-01-15 00:33:38 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

>If you're working on a 16:9 source, you may wish to make an anamorphic video.
>
>Some TVs/DVD players are capable of taking a 4:3 image and scaling it down to 16:9 adding their own black bars. My TV is capable of doing this, and it increases the pixel density while doing it resulting in a sharper output image.

I had hoped that it was possible to only encoding the active playfield instead of the playfield + voids (albeit that the voids take up very little room). Making an anamorphic means the video has to be scaled vertically then reduced during playback. Thats 2 conversions away from the original source material, not to mention the larger file size and added encode time. A high price to pay for not putting the voids in the source from the get go.


wcpaul  2003-01-15 17:46:49 ( ID:q7gr550x3gw )   [ Delete / Reply with quotation ]

The DVD video standard has 2 aspect ratios, 4:3 and 16:9. Black bars are NOT encoded except for very thin ones when 1.85:1 movies are encoded at 16:9 (1.78:1).

A DVD element (menu, video title, etc) with the 16:9 setting is assumed to be anamorphic and the player will squeeze the picture and add black bars (when instructed that the TV is 4:3). The squeeze is pretty sophisticated. Four lines are averaged together to get three.

This method allows 16:9 displays to retain full resolution.

When DVD authoring software sees mpeg input files with 16:9 flags in the header(s) it groups them together in a video title set that will have a 16:9 flag. Mpeg files that are not 4:3 or 16:9 will not be accepted by authoring software. Most consumer software does not accept 16:9.

IFOEdit can be used to change the aspect ratio setting for "video title sets" after a DVD has been authored. This allows you to supply anamorphic material encoded at 4:3 to consumer authoring software and fix the DVD database before burning.


sndtek  2003-01-15 18:25:44 ( ID:xvtzswxolvg )   [ Delete / Reply with quotation ]

What you say is correct. However, in my original post, the source material is 640 x 272. This translates to SVCD size of either 480 x 272 or 464 x 272 depending on how anal you want to be about pixel aspect ratios. I did not know if the MPEG-2 spec allowed the stream to be something less then 480 x 480 (or 720 x 480 for DVD) and simply place in the header information to the player that the video needs to be padded-out on the fly. If that were possible then 100% of the bitrate bandwidth could be for the active video.

To "take advantage" of amamorphic abilities of the player to vertically squeeze & pad-out with black would require that additional vertical detail be conjured up (ie vert scaling). That would increase the source material from 272 vertical to 400ish. Then the player takes that 400ish back down to 272 and plops it onto the output frame. Neither of these 2 conversions are lossless and the new vertically scaled source material is larger and would result in a larger encode.



Question - TE25 - Blank Screen No.33375
emmjay  2003-01-13 20:46:12 ( ID:izvs8xtjp7c )   [ Delete / Reply with quotation ]

I am trying to convert an avi to mpg but all I get is a blank, black screen (audio is OK). I have read others with the same type of problem and they've been recommended to increase the priority of the DirectShow plugin. When I do this however the whole program crashes! Any ideas? This avi is the second of two and the first one was fine.
Thanks



Question - TE25 - scan line out of range(404) No.33374
gary  2003-01-13 19:08:19 ( ID:bzqfsj4uxkc )   [ Delete / Reply with quotation ]

I doun understand why tmpg is going wrong. it is my first time using this software. I tried to convert avi to dvd file(mpg). And there was a error pop out ( scan line is out of range error:404).
P.S Plaze help!!!!



Question - TE25 - AC3 Wierdness No.33372
Dan Phillips  2003-01-13 17:36:43 ( ID:765lduvfcdm )   [ Delete / Reply with quotation ]

Can someone tell me why the exact same version of TMPEG can decoded AC3 on one computer and not on another? The only difference between the versions is that one is registered and the other if the free version. The free version is the one that works but they are the exact same version otherwise.

Dan P.


ASHY  2003-01-13 21:36:52 ( ID:n3gjkhi6dvc )   [ Delete / Reply with quotation ]

....and one computer has an ac3 codec installed and the other hasn't.

ASHY



Question - TE25 - TMPGEnc file size handling issue No.33367
Jason  2003-01-13 16:48:03 ( ID:lyw7ixyd4tr )   [ Delete / Reply with quotation ]

I have encoded hundreds of VCD's from avi files with this program before, but now lately, the program seems to be doing something very strange. I have a 349mb 44:00 video file, but when I try to convert it to VCD TMPGEnc says that the file is 142:00 minutes long and the program informs me that this is obviously going to be too large to fit on a CD.

Interestingly enough, I have a 140mb video file of the same length and it encodes perfectly...but I have been downloading more and more of these higher quality avi's and seem to keep running into this problem.

This file that is giving me problems is 512x384 24bit @ 23fps, and windows tells me the video compression is DIVXMPG4 V3. The audio is MP3 at 109kbs.

Any help you folks could give me would be much appreciated.


Jason  2003-01-13 17:06:50 ( ID:lyw7ixyd4tr )   [ Delete / Reply with quotation ]

Well, guys, it looks like I fixed the problem...sort of....if I use the source range option and I set the end point just a few frames away from the very end of the file, suddenly TMPGEnc suddenly decides that I have a 44 minute video file instead of a 142 minute video file...is this a bug in the program of just something crazy going on with my crappy computer?


Minion  2003-01-13 21:41:00 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

The Thing with Downloaded files is that they Get corrupted from being downloaded repeatedly so there are probably corrupted Frames or the header is corrupted and that is why it is giveing you this and other problems ,Downloaded movies aren"t the Best way to make High Quality VCD"s and Svcd"s out of..It is Best to Rip them yourself...


Jim  2003-01-16 13:17:49 ( ID:xfsxos4uu8f )   [ Delete / Reply with quotation ]

TMPGEnc seems to have problems with avi's that have VBR sound.. reencode it as cbr and itll be fine.

Jim


Mazz  2003-01-16 16:50:00 ( ID:8yfrh0k0y/a )   [ Delete / Reply with quotation ]

I am a newbie at this game, how/what program do you use you to do that ?



Question - TE25 - DLL and runtime problems - ntdll.dll No.33363
Mazz  2003-01-13 13:10:18 ( ID:8yfrh0k0y/a )   [ Delete / Reply with quotation ]

Hello, I'm having loads of trouble while trying to encode MPEG-2 with. I get loads of DLL errors, what i get is 'Write error occured at address 77F546F7 of module "ntdll.dll" with 00000000' and then run time error 216, please please please can someone help me ?
I'm using version 2.59 on a P3 700 running XP Professional.


Wulfs  2003-01-13 13:32:06 ( ID:91/goiqbzso )   [ Delete / Reply with quotation ]

Same problem here, narrowed it to XVID codec. Have WinXP with SP1, WinMediaPplayer9, tmpgenc .59. Can easily create from div3, xvid crashes... any help?


Mazz  2003-01-13 19:03:04 ( ID:8yfrh0k0y/a )   [ Delete / Reply with quotation ]

Yes the file i trying to encode is an XviD too :( Sometimes, very vgery rarely will it work fine, as i have done a few XviD encoding on .59, but none for a while because of this problem. I trying using ME, and 3 other computer with no joy :(


Minion  2003-01-13 21:36:44 ( ID:a6p1jd3ovjw )   [ Delete / Reply with quotation ]

I read somewere that to properly encode Xvid files you have to change the Four CC code of the Codec to the Four CC Code of DivX...



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