3ivx to divx

[harshitvaria]

Hi I have a 3ivx *.mov file that I want to convert to divx avi. I used Dr. Divx to do it and the problem was when I played back the divx file it was missing about an inch from the bottom throughout the movie.

Is there a better way to convert a 3ivx mov file to a divx avi

[celtic_druid]

Sure, demux the video to avi and change the fourCC from mp4v to DIVX/DX50. Both 3ivX and DivX are MPEG4 so they should be interchangable.

For the audio you could use AVIMuxGUI to mux the original aac from the mov (assuming that it is aac) to the avi or convert it to mp3 and then mux.

[canadateck]

@celtic_druid
What dont you know?LOL

[underwurlde]

Bollox to all that!

Use TMpegEnc Express - Only method of converting MOVs that has ever worked CONSISTENTLY for me!

Andy

[celtic_druid]

Well I decided awhile ago that it wasn't possible to know everything so instead I would learn something about everything so as to give the impression that I know everything without having to actually know it.

@underwurlde, surely a lossless process is better than a lossy one? Even if it is only for video? Faster and higher qualtity, can't knock that.

[underwurlde]

Hehe,

read:
"Bollox to all that!" as in a whole lot of friggin' about...

NOT:
"Bollox to all that!" I think you're talkin sh1t.

Anyway...

MOV files. Excellent little things. Very professional, good quality and can utilise DVD style menus etc (driven through a system called 'Atoms' that make up the MOV container).

I'm not knocking them or their use but the damn things are geared towards your Apple Mac's of the world, not the PC world and hence when playing a MOV file the usual DirectShow PC method of driving AVI bound codecs is side-stepped and any players (/converters) must therefore be self contained outside of the DirectShow environment.

Now the upshot of this is that CONVERTING MOVs is a pain in the ARSE because DirectShow filters now don't apply!

Now I thought that if MOVs are just containers then surely getting the orginal video out of them into an AVI should SURELY be simple, but as far as I know, it aint.

You CAN go down the route of separately extracing the RAW video and audio content and then re-encoding the result..... But, this method takes up HUGE amounts of HDD space & HUGE amounts of time. And then when the two are spliced back together into an AVI container the f-ing thing is out of f-ing sync!!!!!

Hence the "Bollox to all that"!

After mucho-mucho dicking about the FASTEST & most CONSISTENT method of converting MOV files I have found so far (so that I could play them on my Yamada DivX player) was to first convert them to MPEG II using TmpgEnc Express and then convert resulting MPEG II to whatever.

OK, granted there will be a slight loss in quality but the aforementioned method will, in my experience maintain 95-96% quality of the original.

'nuff said!

Andy.

[celtic_druid]

A 3ivX mov file is just an mp4, which is not specifically aimed at macs.

You could for instance use graphedit, 3ivX's splitter and the avimux filter. mencoder with -ovc copy and -oac mp3lame to copy the video and re-encode the audio in one go. Could try mpeg4ip/mpeg4ui or GPAC.

[harshitvaria]

Hey guys I tried using TMPGenc Plus and TMPGenc Express to convert the 3ivx file to mpeg format and the image is getting vertically streatched.

I selected the option in TMPGenc that says keep aspect ratio and it works fine for any divx file that I try to convert. But for some reason the 3ivx files do not convert correctly.

Does some one know how to fix this.

Here is the original 3ivx screenshot



Here is the converted MPEG file

[harshitvaria]

hey celtic_druid,

I am new to graphedit and this is what I have done so far... My problem is I cannot seem to find any divx encoders or mpeg encoders... do I have to download them seprately and if yes then where could I download them from

here is a screenshot

[celtic_druid]

The idea is/was to leave the video as is. Remove the video decoder and hook it upto the avimuxer filter. The audio you would need to decode or convert before muxing unless you use AVIMuxGUI which is I believe the only way to mux aac into an avi container.

From the looks of it there is some kind of PAR resizing going on as it couldn't actually be encoded at 363 pixels wide.

[underwurlde]

Yo,

Right, i'm gunna shut my chops and watch in anticipation.

I have tried the GraphEdit route in the past with VARYING results (none of them good BTW).

If you can get the method of stripping out the original video WITHOUT re-encoding then great, I'll bow down to your excellence and happily use this method instead of my TmegEnc Express method.

Hopefully this method will work seamlessly when muxing the audio, espcially when applied to menu'd MOVs (as it does for TmpgEnc).

GOOD LUCK (Believe me, I WANT this to work

Andy

[celtic_druid]

I am talking about mp4 files. As I understand it, a mp4 splitter should skip stuff that it doesn't support like menus. Just tried an mp4 sample and the menu works in osmo4, but it plays normally with Media Player Classic, as such it should also remux normally. You should always be able to demux the streams via mpeg4ip or GPAC anyway.

The 3ivX mp4/mov muxer doesn't support advanced mp4 features like menus anyway.

[harshitvaria]

hey I tried making a connection with AVI MUX filter but it says the filters cannot agree on a connection. I tried removing and adding the decoder but it is the same problem.

If I cannot get the divx for my divx player then I would be satisfied with a DVD also. Can you guys figure out why TMPGenc is veritcally stretching the picture... it never does that with divx or xvid files... why should 3ivx be any different they are all MPEG4 are they not.

[celtic_druid]

3ivX supports PAR resizing, DivX doesn't and only newer (1.1/cvs head builds) XviD builds do, plus most files would have the PAR set to 1:1 anyway.

I would suggest that you try mencoder, mpeg4ip/mpeg4ui, GPAC or it occured to me that VLC can probably do it. No cancel that, VLC can't mux to avi.

[underwurlde]

Yo again!

And I quote....
"If I cannot get the divx for my divx player then I would be satisfied with a DVD also."

The DVD format is MPEG II. The output from TmegEnc can be MPEG II, in fact you can state that you want it in a DVD format.....

Anyway, if the first stage conversion you get from TmpgEnc Express is stretched AND you want your eventaul format to be DivX then I suggest you go with the MOV conversion to MPG using TmpgEnc Express first and then use VirtualDub to convert it to DivX utilising the available frame stretching filters to get what you want.... (Run it through Multipass 3 times to get good quality though).

Worked for me in the past with more than (OK, OK, not '100% perfect') acceptable results.

I see you are going through the same shit as me with GraphEdit for the reasons I mentioned earlier with regards installed DirectShow filters. Yes, you have a MOV set of filters available but they are not 'compatable' with the other filters you need to get a converted output. I believe this is because the MOV filters that GraphEdit uses are emedded into the QiuckTime Player (et al) utility and not as is the normal method of making these filters DirectShow (i.e. PC) filters.

I could very well be wrong on this but this is simply how I think of it. MOVs do not seem compatable unless a particular tool has licenced (£££'s) a set of tools and embedded them into their app. Hence you are stuck with using the very few tools that can handle MOVs - all of which (with TmpgEnc the ONLY exception I have found) seem in some manner or another to just screw up! (OK, sometimes they MAY work but NOT for every MOV I have tried).

As I said, that method just seemed to work, no dicking about with sync issues etc. and took a reasonable length of time to do.

Hope this hepls,

Andy

[gastorgrab]

3ivX supports PAR resizing, DivX doesn't and only newer (1.1/cvs head builds) XviD builds do, plus most files would have the PAR set to 1:1 anyway.

I would suggest that you try mencoder, mpeg4ip/mpeg4ui, GPAC or it occured to me that VLC can probably do it. No cancel that, VLC can't mux to avi.

I don't mean to intrude but, i've done something similar but with Matroska Muxer GUI.

It is possible to repackage *MOV streams, but when i tried to remux the Matroska file back into *.AVI i got the error message;

"VirtualDub cannot determine Frame Rate" - (The *.MKV file played just fine through WinMedia Player 6.4)

Is the frame rate info stored in a different place in MP4's than everyhing else?

I've also had better luck with MPEG4UI, but not totally acceptable results.