how to join video files pls ?

[erzane]

Hi,
I cutted a file in multiple parts and now I would like to join those parts
I have VirtualDubMod
how to make it pls ?

p.s. I encoded every parts like this :

video>compression>XvidMPEG-4 codec
configure>XvidHome
2pass
targetsize 570000
quality preset - general purpose

save as
video mode>full processing mode

[jagabo]

File -> Open
File -> Append

[erzane]

I appended 2 files but nothing happends

what should I do after ?
must I go to video>compression ?
or directly ''save'' ? (I am afraid to have a mega big sized new file)

another problem is that one
pls see attached file
but I did the 2 files with exactly same method, so I dont really know why he tell me that

[sambat]

Open part 1 and set the video for 'Direct stream copy', set Audio > Full processing mode > Compression > No compression and save the video.
Repeat for part2.
Close VirtualDub and restart.
Load the first part with uncompressed audio then append the second part with uncompressed audio.
Set Video > Direct stream copy and recompress the audio to whatever you want.

[erzane]

Hi
thanks a lot
in fact I have 4 files
so, I do all as you said for the 4 files
but only 3 are ok now
when I try to append the 4th
it says

[sambat]

The 4th part open in VirtualDub, set Video > Direct stream copy.
Then Video > Frame rate.
'Frame rate conversion' > 'Convert to fps' - set to 23.976 (same as the 'good' parts)
Save File.
Close and reopen VirtualDub, append the the new 4th part.

[erzane]

thanks a lot!
your help is very appreciated

p.s. about audio
you tell me to recompress audio watheaver I want
but leaving it like this, looks to be ok for me.
because I dont know really how to recompress it, I leave it as normal right ?

[sambat]

It's uncompressed so much larger than before.
You can get the type of compression used by loading the original video and File > File Information.
E.G. if it was mp3 you could install the Lame mp3 encoder and select that under Audio > Full processing mode >Compression and use the same settings as reported from File information.
Of course if you do that remember to set Video > Direct stream copy.

[erzane]

ok thanks, I will notify it

[erzane]

there is a small probleme left
when I join all my file, it give me a very big final file
my 4 files are max 250mo and it gave me a final 20go file
and I dont see the possibility to make a 2pass encoding for reduce the size like I did with virtual dub mod before
but in virtual dub mode I simply dont have the ''audio'' menu'' so I cannot put audio in full processing mode...
that's why I cannot use virtualdubmod for the apening...

[sambat]

You forgot to set Video > Direct stream copy?

[erzane]

no I did it well with virtualdub normal edition
but in this edition I dont have the possibility to save the file with a 2pass jobcontrol and recompress the video size

because, with virtualdub''mod'' I did always that

>video>compression>>XvidMPEG4 Codec>
>config>1pass/2pass
Save As > dont run this job now
and I did that 2times (because 2pass)
and in final I had everytime a good sized video, like around 250mo

but the only failure in VDMod is that I dont have the ''audio'' option/menu
so I cannot do
>audio>full processing mode>compression>no compression..

that's why I use virtualdub ''normal' (not mod) to make it
but when I am trying to get my final appended file it is to big..

[sambat]

VirtualDubMod is 'Streams' > 'Stream list' then right click on the audio stream and select 'Full processing mode'.

[erzane]

great ! thanks
so I will do all with VDmod
it's more easy for me because I am more used to use it than virtualdub normal

[erzane]

I just notified another thing
the 4th file appended has a different sound volume than the 3 others
can I check somewhere on the menu which sound volume have this 4th file compared to other ones, and fix it / set it, to make it the same as the other ones ?

[sambat]

The only thing I know in VDubMod is Streams> Full Processing> Volume.
You would have to guesstimate by ear if it approximated the other files then re-compress it.
Or perhaps load the different one and a normal one in the likes of Audacity and compare the waveform then adjust as required.
That would be for someone else to offer an opinion - I'm not well up on audio.
If no one steps in, start a new thread.

[erzane]

thanks,
your methode works fine.
it's just that, as you say we must do it by ear, but it's ok for me like that.
anyway, I knew audacity already but I was thinking it's only for audio files
I will try it again for see what it can do especialy in that case

[erzane]

I am sorry, but in this case, new settings don't works
could you tell me which number must I set in ''convert to fps'' pls ?
sometimes it tell me 23.976, and sometimes 16000.00000...

[Attachment 27367 - Click to enlarge]


so, I put 16.000 in the right place and save it
then, when I try to append again it tell me this

[Attachment 27366 - Click to enlarge]

p.s. sorry for putting 2times the same attachment, don't know how to erase the last one

[sambat]

The first example is referring to Audio sampling rates, not video frame rates.

[erzane]

it's ok
I forget to save every other files of the folder
I did it only for the first one, that's why the other ones didn't work

ps. can you tell me how to erase attachments ?

[Baldrick]

Click on the Edit-button your post, click Go Advanced, click on the upload files/manage attachments and click remove on the file.

[sambat]

Edited to remove my comment as Baldrick beat me to it.

[erzane]

not so logical because 1st file is the lastone and 3rd is the 1st one lol
but it's ok, I see now

anyway
there is still a problem
because I have some 1/10 sec late concerning sound/image...on the ending (ending means ''credits'' > music clip at the end of the drama)
but it's only on files with the modified ending (when I modified sound volume)
when I put original file with lower sound volume (never modified) it's ok
so strange...

[sambat]

Using a media player like VLC or MPC, find out the exact amount of adjustment is required to bring the audio into sync.
MPC, it's - or + on the number pad.
VLC, it's the j or k keys.
Note the value.
Open the video in VirtualDub.
Set Video > Direct stream copy.
Audio > Interleaving and insert the value in milliseconds that you got from the media player in 'Audio skew correction'.

[erzane]

Hi,
I opened the assembled video in VLC
then Play
then J, and it tell me -50ms
if I push K, it tell me 0ms
if I push K, again it tell me 50ms, or 100ms , or 150ms etc...

but it's not an information about the delay, it's only the info about how much delay will be added or leaved.. (+ or -) like a volume controle who give you info about the volume value in that precise moment.
that's why I don't understand which value could I set in Vdub..

what is strange is that
with avidemux, all is ok, no delay, but when the ending arrive, it makes a scratchm and continue without delay to, but there is a 1sec scratch/slowing
and we are talking about the file I modified the sound volume ans the same file, without modif
perhaps this file has a serious encoding issue as basis, since I didn't encoded it myself from basis (it isn't myself who uploaded it on the web)

[sambat]

Insert plus or minus values with the keys until the audio and video are in sync.
Transfer the final value into VirtualDub.

[erzane]

Hi,
it's done, but don't works perfectly
because in my assembled video (composed of 4 files) I can have a good result by making K (for example 350ms) in a sequence
but this sequence was from the file3 (for example)
but when the file4 appear, some minutes later, 350ms is not enough for not having late, I must change the value
that's why, to note this value don't work in my case
I tryed it, and the result still have audio late

[sambat]

Are you making the skew adjustment in the individual files before joining them together?

[erzane]

no, in fact every file are ok before assembling them
separately, every file haven't any issues
it's only when they are assembled the issue appears

[jagabo]

So add 400 ms of audio to the end of part3 or the start of part4, before joining.