In the end of our previous clause we promised to return once again to a question of processing "photovideochamber" MPEG videorecordings. Since then has passed already more than two years, well and as " obesch'anogo three years wait " it is possible to tell, that its this continuation leaves even a little before expected term :-).
For the past two years much has changed then MPEG- video in cameras was still in wonder, and now it is quite standard function which many at all do not consider at a choice of the camera. If then in similar chambers it was used exclusively MPEG ASP (Advanced Simple Profile), there were photovideocameras with support of more advanced format MPEG- AVC (Advanced Video Coding, H.264), the same format of coding of video is used in HD DVD. Therefore, to avoid mess, we concretize a case in point in the name of clause " notebook comparisons australia MPEG ASP " though and on MPEG- AVC too we shall a little stop.
Now almost all modern DVD-proigry'vateli support MPEG- ASP codecs DivX and XviD. However and then, and now this support in the basic is limited to container AVI while in photovideocameras containers MP are often used and MOV. there are the photovideocameras removing MPEG- AVI rollers, but also they in the bulk not DivX-sovmestimy'. DVD players c support MP (Nero Digital) already are on sale, but they while the expensive and are not numerous, and not the fact, that they support MOV.
From here there was a first problem with which owners MPEG- ASP of photovideocameras have collided is incompatibility of the finished shooting rollers with habitual programs of installation and with DVD-MPEG players. Our previous clause also has been devoted to its decision, here for expired time a little that has notebook comparisons australia changed. If we wrote it now the sequence of steps would remain approximately the same unless versions of programs would be updated, yes ways of viewing of initial rollers on a computer (then very much few programs coped with it) would be added.
The second problem which we then only have designated it necessity of code conversion of all video data at nonlinear installation (with addition of transitions, effects, etc.). Also has put here not only in expenses of time, but also in additional loss of quality, vnosimoy code conversion.
The matter is that one of serious advantages MPEG- ASP of photovideocameras is the opportunity of creation from the crude finished shooting material ready MPEG- film on CD or DVD without loss of initial quality and with the minimal time expenses (in times is faster, than in case of with miniDV the chamber). At code notebook comparisons australia conversion initial MPEG- video almost all advantages of such chamber before miniDV are lost.
It would seem, we have only two these extreme measures without intermediate variants. And what to do to those owners MPEG- of chambers which wish to use some opportunities of nonlinear installation (transitions, credits, inserts, etc.) but thus do not wish to recode all video data which most part, as a rule, remains untouched? Now we can confidently tell there is such way, in particular by means of videoeditor Ulead Video Studio.
For the beginning we shall stop on the theory and we shall try to understand, why in one cases it is possible to be limited simple and fast perepakovkoy video, and in others it is required to recode it and also why code conversion leads notebook comparisons australia to deterioration of video.
In clause we already considered this question. We shall very shortly stop on features, important for understanding of our problem.
There are two basic groups of videocodecs with time-lapse compression (Motion JPEG, DV) and with interpersonnel compression (codecs of group MPEG MPEG-1, MPEG-2, MPEG- ASP, H.264).
In codecs with time-lapse compression everyone the staff is coded irrespective of other staff, as separate "photo". In codecs with interpersonnel compression there are two types of the staff key and intermediate. Key the staff contains the information on the staff while intermediate contains only differences of the given staff from previous (or previous and the subsequent), these differences are usually insignificant. Key the staff and the intermediate staff connected with it form so-called GOP (Group Of Pictures). For decoding notebook comparisons australia the any staff inside GOP it is necessary to decode all chain beginning from the first (key) staff. One of the restrictions from here follows, arising at linear (pryamopotokovom) installation MPEG- we can carry out video kroyku and sewing only on borders GOP *.
* the Note: Strictly speaking, it is necessary to cut the beginning only of a fragment strictly on the key staff (beginning GOP), it is possible to cut its termination, since the any staff.
For photovideocameras with GOP= (GOP contains staff) and frequency of the staff it means installation to within 0. sek. For installation of a home video usually there is enough such accuracy though sometimes happens and a little. To it we shall return hardly below.
Serious advantage of codecs notebook comparisons australia with interpersonnel compression is higher degree of a compression at preservation of high quality of video. For an example we shall tell, that on usual DVD a disk it is possible to keep less than minutes raw DV a video data, from an hour up to two MPEG- videorecordings or 3- hours MPEG- ASP of videorecording. Therefore for preservation of ready video basically are used MPEG codecs.
Also we shall note, that modern household DVD players are able to reproduce MPEG- (Video CD), MPEG- (DVD and SVCD) or MPEG ASP (DivX and XviD) video, and here MJPEG and DV are not able. So, if initially videorecording it notebook comparisons australia has been made in DV or MJPEG, for creation of film absolutely precisely it is required to recode it in MPEG- (DVD Video) or MPEG- ASP (MPEG- CD). And whether here on a question it is necessary to recode MPEG- videoclips in MPEG- the unequivocal answer is not present, therefore we shall designate pluss and minuses of each approach.
If our purpose is reception standard DVD-diska which will generating on any DVD-pleere (including without support MPEG-4) code conversion in MPEG- us to not avoid. At coding in MPEG- with high enough bitreytom (40 80 Kbit/sek) visual loss of quality will be small. Though, certainly, here much depends and notebook comparisons australia from chosen MPEG- the codec. The basic lack of this approach greater expenses of time for code conversion.
If we have enough MPEG- CD/DVD on an output it is possible to reduce time for processing considerably. Here the initial format of video coincides with final, therefore code conversions can be avoided in general. One of lacks of such approach for MPEG- CD/DVD cannot be made the menu as for standard DVD-diska. MPEG- the disk enters the name as a usual disk with data, DVD-MPEG the player at its loading simply displays the list of files. At reproduction of such files usually there is a fast navigation on time, and it partly compensates absence of the menu.
The notebook comparisons australia limited compatibility with DVD-proigry'vatelyami, however today when overwhelming majority DVD-proigry'vateley have support MPEG-4, it hardly it is possible to consider other lack serious lack.
On the other hand, the economy of time at such approach can be rather essential. That perepakovat' and to stick together hour film, plus of 5- more minutes on record of CD (while for code conversion of the same film and record DVD 1- hours is required) is required no more than 5- minutes. And loss of initial quality at perepakovke will not be in general.
But, unfortunately, at such fast approach we can use only opportunities of linear installation (" kroyku and sewing ", or the SECOND WAY on ours). Such elements as transitions and filters will be inaccessible to us, nonlinear installation is necessary for notebook comparisons australia this purpose with code conversion.
Practice shows, that at amateur installation the most part of a video data remains untouched, therefore full code conversion it only superfluous losses of time and quality of video. There is a question and whether it is possible to recode at nonlinear installation only the changed sites of a video data, and untouched to transfer to an output without code conversion?
DV video, here programs of installation already for a long time have learned similar reception if entrance and target formats coincide, the mentioned fragments will be recoded only. But here with MPEG- all has appeared more difficultly notebook comparisons australia during our experiments videoeditors have persistently recoded all film and did not wish to transfer untouched fragments without code conversion.
First such opportunity has been found out in videoeditor Ulead Video Studio 7.0, and then (by means of participants) we have learned to adjust editors Ulead VideoStudio and MediaStudio different versions.
In previous clause the codec is used only for viewing video, work of the codec does not influence process of linear installation in any way.
Here quality of received video besides we need to pick up and adjust the codec with the videoeditor will depend on its adjustment directly so that those sites of video on which filters or transitions have been imposed were recoded only. Untouched sites of video should be transferred without code conversion, pryamopotokovy'm by notebook comparisons australia copying.
Codec DivX (the fifth version, we used 5.1. and 5.2.1);
Videoeditor Ulead Video Studio (versions 7.0, 8.0, 9. or 10.0);
Program MP4Cam2AVI (for perepakovki photovideochamber rollers in container AVI to make them DivX-sovmestimy'mi *).
* the Note: Though some versions UleadVideoStudio work with MP files, for our problem of a possibility pryamopotokovogo copyings it is necessary, that initial rollers were DivX-sovmestimy'mi, and preliminary processing is necessary for this purpose in MP4Cam2AVI.
Probably, same results can achieve with other codecs and videoeditors, but it it was not possible to us (we tested codecs DivX5, DivX6, XviD, 3ivX and FFDShow with Ulead Video Studio, Pinnacle Studio, Sony Vegas and Adobe Premiere).
In any case, we offer the working technique found by joint efforts, and in the rest we leave open space for experiment to our readers.
Adjustment of codec DivX is in detail enough described in clause so in notebook comparisons australia detail on this question we here shall not stop. In our case DivX it is adjusted for simple single-pass coding. Us two parameters bitreyt (bitrate) and an interval between the key staff (keyframe interval, it size GOP), first of all, interest.
To choose bitreyt it is desirable for enough greater, not less, than in initial video. But also it is more 40 Kbit/sek to specify too is not necessary, differently DVD-pleer can not cope with such stream (40 Kbit/sek this maximal value bitreyta for profile DivX Home Theater which adheres majority DVD-MPEG of players).
That precisely it is not necessary to do it to put low bitreyt for reduction of the size of a final roller. As the most part of video remains without code conversion it is a lot of a place to save it will not be possible, and here spasmodic deterioration on the recoded notebook comparisons australia sites will be guaranteed.
Size GOP (an interval between the key staff) in this case is not important almost it is possible to leave value of the codec by default (3 staff), and possible to choose or staff on result it will affect not so strongly.
Various videoeditors were already repeatedly considered in section: "," ". Any of them In this case will approach. The main thing that the videoeditor has been correctly adjusted for work with MPEG ASP videorecording.
First of all, we need to check up, whether the editor will transfer untouched sites of video without code conversion. The matter is that versions of programs Ulead exists much notebook comparisons australia more, than their official names. For example, Ulead VideoStudio exists and as the independent product sold separately, and as the "free supplement" delivered together with a videocamera or other video equipment. As a result, variants of the same versions programs Ulead VideoStudio got in structure of different packages, can differ from each other in such "trifles", as ability to leave not recoded sites of video.
In adjustments of project Ulead as a target format necessarily we specify container AVI, codec DivX (even if at system there are others MPEG- codecs) and a format of audio MP (that the sound generated on DVD-MPEG- pleyere). Also we check conformity of frequency of the staff (Frame rate) and the size of the staff (Frame size) to a "entrance" notebook comparisons australia format (differently pryamopotokovoe copying will not work). Entrance parameters of video can be learned, having looked File Info in VirtualDub (see below) or in MP4Cam2AVI.
Here it is necessary to adjust or check up adjustments of codec DivX (button Configure).
The note. In case in system it is established a little MPEG- codecs, they can clash with each other (for example if besides DivX5, are established still XviD, FFDShow, or any Codecpack (that happens a source of problems more often). It is necessary for us For correct work, that our file was processed by codec DivX5, instead of what or another. It can be checked up, for example, so open a file in VirtualDub and look FileInfo:
If codec DivX there is specified, means, everything is all right. Otherwise reinstall codec DivX5. If also it has not helped, remove all MPEG- codecs (including DivX5), and anew establish DivX5. For check notebook comparisons australia it is possible to open once again a file in VirtualDub.
Now we need to check up, whether Ulead with codec DivX will transfer untouched sites of video as is, without code conversion. To make it it is possible in several ways.
Most simple (but also the most unreliable) a way on speed of processing of video. If at export of the project processing goes places much more quickly real-time, and by places is sharply slowed down, all is normal. If processing goes with almost constant low speed all material most likely will be recoded. Such way of the control is not so reliable, but does not demand notebook comparisons australia recustomizing the codec, and it is convenient for using for the control of work of already adjusted program. At the first adjustment it is better to use one two of next ways;
As already it has been told above, in MPEG photovideocameras 10, or staff is usually used GOP the fixed length. If in adjustments DivX we shall specify great value GOP (for example, we we shall leave value by default 300) the recoded sites will be easy for finding out on an interval between the key staff. So, we open received AVI a file in VirtualDub:
C by the help of combinations of keys Shift + Arrow-Left and Shift + Arrow-Right it is moved only notebook comparisons australia on the key staff, indication of a current position is displayed in a special window below on the right. If rewind goes strictly through 10, or staff (depending on the chamber by which shooting was spent), that, most likely these fragments have remained untouched. If intervals between the staff have appeared distinct from specified it is rather probable, the given episode of film has undergone to code conversion.
However, the most evident and absolutely authentic though also a little more labour-consuming, the next way is:
As we already spoke earlier, at coding bitreyt it is desirable to choose enough greater, not less, than at initial video. If bitreyt it is chosen insufficient on the recoded pieces there will be rather appreciable artefacts from peresjatiya. Here on it property the given check also notebook comparisons australia is based. If for check (only for check!) to choose very small bitreyt after processing, at the viewing, the recoded places can be seen easily on low quality of video. Thus, if at viewing a roller on its all length characteristic artefacts all roller has appeared are visible is recoded. If bad quality fragments peremejevy'vayutsya qualitative the part of a video data has been recoded only. The main thing after check to return chosen before adjustment of the codec with high bitreytom, and actually working coding to spend already with them.
If as a result of check it was found out, that the fragments, undergone to changes will be recoded notebook comparisons australia only, means everything is all right. But what to do, if an available version of videoeditor Ulead will persistently recode all video data?
There is a decision and for such a case. Participant Kurnosovym aka vvkv had been allocated, responsible, whether program Ulead will recode the raw sites of video, or to leave them without changes.
For example, for Ulead VideoStudio 8. in a branch of the system register (it is visible, that the name of a branch of the register actually contains the name of the program and number of the version):
With the specified value of a key the program works with code conversion of the raw sites of video, but if value of a key "DTR_DivX" to change with "0" on "1" not influence filters sites of video will remain not notebook comparisons australia recoded. If in any version of program Ulead the specified record DTR_DivX is absent in general it needs to be created in a corresponding branch of the register *, and to appropriate to it value "1". That's all!
* the Note. Editing of register Windows is carried out by means of the program regedit. If you are unfamiliar
With this process, is better all over again waste time on the theory. Otherwise, incorrect editing of the register can result
To very serious problems with Windows. The brief description of the program regedit can be looked in the beginning of clause.
Participants had successfully been lead check of this reception for various versions of programs Ulead VideoStudio. Basically, such editing of the register should work and with Ulead MediaStudio, it notebook comparisons australia is necessary to find only a corresponding branch of the register (its name depends on the version of the program), and to understand with a demanded key.
If editing of the register has given demanded result, and it has been confirmed by check (see above) it is possible to start to work.
As to direct process of installation, here it is necessary to make one more rather important remark.
At work with DV or MJPEG records code conversion will be made in any case, and we in any way do not limit ourselves to application of videofilters. Thus, any videofilter can be quite applied though notebook comparisons australia to all film. At work with MPEG videorecordings such approach will lead to that all film will be recoded that, in general, was to be avoided.
For example, if we shall make beautiful transitions between episodes, it is quite comprehensible duration of transitions is rather insignificant, and loss of quality on transitions not so is appreciable. Now we shall admit, that we have wanted to correct slightly balance white on one of episodes. If an episode short and correction is necessary, it is quite comprehensible. And here if we shall do it with all film full code conversion as a result will turn out, and all our dancings with bubnom around Ulead and DivX lose the sense. Therefore, filters here should be applied as much as possible selectively only notebook comparisons australia there where it is really necessary.
Let's note also, that in this case we can mount video fragments not only on the key staff, but also to within one staff. Thus that will be recoded only GOP with which we cut.
So, we shall formulate provisional algorithm of work with MPEG video with use of nonlinear installation. If will already continue the numbering begun in previous clause, it …
The FOURTH WAY: nonlinear installation MPEG- ASP video without code conversion of untouched sites.
By means of program MP4Cam2AVI we prepare videoclips, perepakovy'vaem them from container MP or MOV in AVI, a sound thus we shall recode in PCM. It has already been in detail described in clause (the SECOND WAY), therefore here is resulted only basic adjustments MP4Cam2AVI:
1.1. On the panel at the left we choose the catalogue with initial rollers and notebook comparisons australia specifies their type (MP4, MOV or AVI);
The note: in new versions MP4Cam2AVI there was evident enough mode TimeLineMode (we shall tell about it hardly below). At its use preliminary "sewing" it can appear is more convenient to make at the given stage, instead of on 3.1, in this case it is necessary to include Many-OneAVI.
Then we choose necessary files, we press button Start, as a result in target the catalogue will appear perepakovanny'e files with the same names, but with expansion AVI.
Bitreyt (bitrate), for video 640x4 fps from 20 up to 40 Kbit/sek;
Size GOP (keyframe interval) we put or (as at initial video) or we leave value by default 300;
2.3. In Ulead Video Studio we adjust parameters of a target file:
Audio codec MP (that the sound was clear DVD-MPEG pleyeram);
Frequency of the staff (frame rate) and the size of the staff (frame size), corresponding entrance video;
2.4. We check, whether the notebook comparisons australia videoeditor transfers untouched sites of video without code conversion:
We import in Ulead received on a step AVI rollers;
If all is normal, we pass to a step 3, otherwise we come back to 2. 2. and we select adjustments;
3.1. We import in the videoeditor received on a step AVI rollers and it is carried out final "furnish" of film it is made " kroyku and sewing ", we impose transitions, we apply necessary filters. As such method of work from video is focused on enough experienced user, it is already good familiar with videoediting, in more detail to paint algorithm of work we here we notebook comparisons australia shall not be;
The note: as the fragments mentioned by filters, will be recoded, filters in this case should be applied selectively only there where it is really necessary;
Before it once again we check adjustments of project Ulead (see above 2.3);
After a step on an output we receive ready DivX-sovmestimy'y film in AVI the container which can be written down on CD or DVD a disk. To make it it is possible, for example, by means of programs Nero Burning ROM or Nero Express (on a question That you wish to write down? It is necessary to answer the Disk with data):
The received disk can be looked through on DVD pleyerah with support MPEG- ASP (DivX/XviD).
Now we shall return almost to the beginning of previous clause to program MP4Cam2AVI.
The matter is that the program created by one authors of this clause by Oleg Mikheyev for processing of videorecordings MPEG4, notebook comparisons australia has very essentially changed for the past two years, it had new opportunities, and its old description is already strongly obsolete. As work with the program has been rather in detail painted in previous clause, here we shall pay the basic attention only to its new opportunities.
The updated program "has learned" to work not only with MP and MOV as containers, but also with AVI (some photovideocameras with MPEG ASP videorecording) and with 3GP (mobile phones). However, at work with last type of files the program is not able to process a sound of what it fairly warns at the beginning of work with such files:
Now at the program has appeared two operating modes connected with essential distinction of the interface:
1) Habitual File List Mode, about corresponding the interface
2) New TimeLine Mode the mode which has not notebook comparisons australia left yet from stage Beta, but already enough convenient to use it,
In mode File List Mode the choice of initial files is made from the list of files by means of the left button of the mouse (with use Shift and Ctrl, i.e. standard for Windows in the way), and change of sequence of "pasting" in target AVI a file by means of change of a prefix of a file. The given actions have been in detail painted in previous clause so here we on it shall not stop. We shall note only, that the given mode is not so evident as "contents" of all processable files are notebook comparisons australia not visible. Though in new versions of the program there is an opportunity of preliminary viewing of video in window Preview, only one file there is visible, and other files should be held in mind. And to change sequence of processable files through prefixes all the same it is not so convenient.
In new mode TimeLine Mode files with which the further actions will be made, get out prostanovkoy "birdies" near to a name of a file by means of a key of "blank" on the keyboard, or the left button of a mousy. Such files also can be chosen "dragging" of a name of a file from the list of files on a window time line for their addition, or from a window time line in the list of files for removal. If it is necessary to change their order of following of notebook comparisons australia files on time line enough to drag a picture with the image of a file on a new place between two other files. As on such mode group addition is impossible, each file should be added separately, however presentation of display and ease of change of their order of following of rollers can move the given inconvenience.
Presentation of this mode does the current version of the program of close work on convenience to "high-grade" videoeditors so some operations which earlier we carried out in them, now it is possible to do and in MP4Cam2AVI.
The program in process of the development gradually got all new and new opportunities, the interface became more and more overloaded, and it could become already too complex for initial development by the unprepared notebook comparisons australia user. To avoid it, into the interface it has been entered three operating modes: Beginner, Advanced and Expert
Mode Beginner is calculated on beginning users, or on those users, which enough simple " kroyki and sewing " the files which have been removed by one chamber. On this mode it is possible only perepakovat' initial files in some or one target AVI a file, leaving a sound constant or perekodiruya it in PCM or MP3. Additional adjustments of processing of a sound and video are inaccessible.
At inclusion of mode Advanced in a window of the program there is button Options in an environment of the "birdies" defining a mode of use of these options.
Window Advanced Options contains additional notebook comparisons australia adjustments for processing a sound (audio options), and also some technical adjustments. Additional processing of a sound (the filter of the bottom frequencies, loudness) works only in modes PCM or MP and is inaccessible in mode Source Audio.
At last, we pass to a mode. Here there is one more option Video Format. Now there is an opportunity to recode video in format XviD MPEG- ASP (c the help of library xvidcore.dll).
The basic purpose of this function code conversion traditional photohardware MJPEG rollers for viewing on DVD-MPEG pleyerah. The matter is that if such roller to process in mode Source video, received AVI the file also will contain MJPEG video, and DVD-MPEG pleyery' this format do not understand.
Despite of the "terrible" name Expert, the given mode it is simple enough in use. Certainly ;-), rather, (for example, in comparison with adjustment MPEG ASP of notebook comparisons australia codecs, such as DivX or XviD). Probably, that to the valid experts in the field of coding video even it becomes a little bit insulting for some devaluation of this word in the given context.
But we shall not carp at a word, and we shall look, that disappears behind it. It is visible, that the user can or leave video without code conversion, having chosen mode Source Video (as it is done in modes Beginner and Advanced) or to choose one of adjustments of coding of video in XviD MPEG4. From the name of modes of coding it is possible to guess, that they differ with a degree of quality and directly connected with it in the size of a final file.
As the given adjustments are calculated notebook comparisons australia on users who, at least, have good enough representation about adjustments MPEG of codecs, we shall only shortly specify, that mode Best Quality corresponds to adjustment of "separately costing" codec XviD in a mode from a constant kvantizaciey (a theoretical limit for the given codec), and mode Lowest Quality to the same codec from a constant kvantizaciey (rather mediocre quality).
Modes High, Normal, Average and Low accordingly use kvantizaciyu 4, 6, and 12.
Length GOP thus will be from up to staff, depending on a mode.
At desire in detail to consider, what adjustments join on this or that mode of coding of video, it is possible to open window Advanced Options in which now there is a block of adjustments XviD encoding options:
Under greyish "birdies" adjustments, active in the chosen operating mode are visible. Parameters Q-Pel notebook comparisons australia and GMC will not be involved in one of typical adjustments, as the given options do not get in profile MPEG HTP (Home Theatre Profile) "subspecies" ASP on which are focused modern DVD MPEG players. At desire it is possible to take advantage and them, for this purpose it is enough to include a mode " DivX User Configurable ", and they become accessible. Such adjustment is intended for the present experts who well know about what here there is a speech, the rest to not experiment (differently is better is possible ponastraivat' such, that any DVD-MPEG the player will not pull).
Bottom from them, notebook comparisons australia " Resize to 320x2 " it is intended for creation of videofiles for viewing on handheld computer and other mobile devices which can simply not pull reproduction of a file with the sanction 640x480. The given option for the present is in condition Beta, therefore there can be problems with its work.
On a birdy " Enable MPEG Recompression " we shall stop more in detail. As we already emphasized, repeated code conversion MPEG video is extremely undesirable, it whenever possible is necessary for avoiding. For this reason the adjustments connected with code conversion of video, were spryatany' in mode Expert. Besides it, we have entered an additional birdy " Enable MPEG Recompression " without which process of repeated coding MPEG- ASP will not be notebook comparisons australia started, the prevention will be given out:
It at all only and is not so much protection against the fool, how many additional secure for all users. Noted birdy is dumped at following start of the program, and the situation when by mistake or on forgetfulness MPEG- a videoclip will, thus, is excluded is repeatedly recoded. For the one who really should recode MPEG- a videoclip (for example, for change of the size of the staff up to 320x240), we consider installation of a superfluous birdy the minimal inconvenience.
Also we shall note in spite of the fact that codec XviD is built in the program, in heading target AVI a file code FourCC DX (which codec DivX usually "subscribes") is underlined. Strictly speaking, value FourCC in heading usually happens notebook comparisons australia neprincipial'no, and many MPEG ASP codecs are able to subscribe another's FourCC, but … In our case, for korreknoy works of videoeditor Ulead c codec DivX (for correct transfer of not recoded video) only code FourCC DX is worker.
If for any reasons such record does not arrange the user, it is possible to change it, having entered in Settings and further in " MP Track ID - AVI Four CC Mapping "
Here in column Video type types of supported codecs, in column Acceptable FourCC’s corresponding admissible values FourCC, and in column AVI FourCC that value FourCC which will be specified for the given codec in a target file are specified.
If at processing that has been wrongly chosen not FourCC which is necessary to you (for example, it "has not liked" videoeditor Ulead) it doesn't matter. The program notebook comparisons australia is able to change practically instantly FourCC AVI videofiles, not perekodiruya, and at all perepakovy'vaya them. For this purpose it is enough to be switched in mode File List Mode, to pass in an operating mode with AVI files, to choose target (instead of initial as in all other cases) AVI a file and to press the button " Avi cc … "
In the appeared window to choose demanded FourCC and to press OK. That's all! The heading of a file is already changed, the window is closed, even button Start in the basic window of the program to press it is not necessary.
Some advanced readers probably already have paid attention, that in window MP Track ID - AVI Four CC Mapping besides MJPEG and MPEG4-ASP is specified also MPEG4-AVC. notebook comparisons australia Really the program is able to work and with videofiles MPEG Advanced Video Codec? Yes, it so the version of the program which have left literally before an output of clause, has learned to do and it. However, now it can only perepakovy'vat' files, leaving video untouched, and at attempt to include code conversion the prevention stands out,
In a window of viewing there is " a Black square " Malevich with apologies, and on TimeLine on the contrary " the White square " same author.
But in the rest the program works, sticks together and perepakovy'vaet video MPEG AVC from containers MP or MOV in container AVI.
" But allow! " Even more advanced notebook comparisons australia reader will tell. " Same it is wrong! AVC it is not necessary to stack in AVI the container! It not under the charter! ". The program will agree and with such point of view (certainly correct), and after pressing Start will display the message on it, and also everything, that it thinks in this occasion
So what for it was necessary to include such "antiscientific" opportunity in the program?
First, some videoeditors do not want or not able to work with any MP or MOV videofiles, and at the same time with AVI the files even containing a "wrong" stuffing, to work agree. Besides it, some of them work with habitual container AVI much more quickly, than with new to them MP and MOV.
Secondly, technically it has appeared much easier, than to learn the program notebook comparisons australia to pack MPEG- AVC in "correct" containers MP for the given format or MOV. Well and eventually, as it was more than once spoken in this clause " If it is impossible, but very much it would be desirable, it is possible ". If such opportunity is, is possible, it and is useful to somebody.
The main thing that in system has been established corresponding MPEG- AVC the codec as which can approach for example free-of-charge VFW codec FFDShow of last versions (earlier versions can work with MPEG- AVC incorrectly).
Certainly, it is extremely desirable to leave initial MP or MOV files with AVC somewhere on HDD or DVD +/-RW suddenly sometime it notebook comparisons australia is required to process them in the native container (besides, perepakovat' in a underside, from AVI in MOV/MP4, it will be already problematic). Strictly speaking, this remark extends and on MPEG ASP videoclips, but for them it not so is critical, as container AVI is supported by all videoeditors.
Probably, the some people had one more question: what for in program MP4Cam2AVI specially "grinded" under work with photovideochamber videoclips, support MPEG- AVC is entered, in fact photovideocameras keep video in MPEG- ASP?. For quite some time now it any more so. Certainly, the majority of photovideocameras continue to work with MPEG- ASP, but there were the samples who are writing down MPEG- AVC video. It is notebook comparisons australia possible to name, for example, already appeared in sale Sanyo Xacti CG65, Sanyo Xacti E (waterproof), Casio Excilim Hi-Zoom EX-V7, is and some more announcements.
From MPEG- AVC videoclips already it is impossible to receive DivX-sovmestimy'y film without code conversion, and with their processing can arise much more problems, than with MPEG- ASP videoclips. However the given question deserves separate conversation so we shall finish both this clause the same as also previous, the citation from the book and B.Strugatskikh... But it already absolutely other history.
Other discussions in conference:
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