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Thread: Steps to repair a partially downloaded .avi that has a missingheader.

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Are you stuck with a partially downloaded .avi file that neither AviPreview nor your favorite bad a#%

media players will open? A missing header is probably the cause. Seriously sucks . The following stepsmay make it so that you can play the partially downloaded .avi that has a missing or corrupt header.

Tools needed:AviRepair - http://www.pk3.org/Astro/Downloads/AVIRepair.zipDivFix - http://www.videohelp.com/tools?tool=DivFixSlideShowMovieMaker - http://www.videohelp.com/tools?tool=Slide_Show_Movie_Maker

You need to know the specs of the video you tried to download.Resolution - It may still work if you guess a resolution that is larger than the one of your partial .avi:explanation in Step 1 belowCodec - Either Divx or Xvid. I haven't tried it with other codecs.Framerate - If you don't know the framerate, you might get lucky by guessing with standard frameratese.g. NTSC(29.97fps) or PAL(25fps) depending on which Country the movie is from.

Important: Before you do anything to the file, make a backup of it (copy and paste). If the .avi is apartial file from emule, make a copy of the .part file corresponding to your download. You can thenchange the extension on the copy from .part to .avi and perform the following steps on that file.

Alright here it goes:

1) Use SlideShowMovieMaker to create a .avi with the same specs as the movie you tried to download.

Other .avi creaters will work also, but SSMM is free and easy.Note: If you already have another .avi file with the same specs as your partially downloaded file, you canskip this 1st step and use that .avi in the next step

-Open SSMM and go to the Wizard-You can select multiple .jpegs for your slideshow or use only one-Set the the time to show each pic so that the video will be at least 20 sec.-Choose a place to save the output-Click Finish instead of creating the file (you do want to change settings).-Go to Project -> Project Settings-For Project Settings, you only need to change the framerate & resolution-Set framerate and resolution to match your partially downloaded .avi-Making a guess of a resolution larger than the partially downloadedavi MIGHT be watchable(it would add black borders but still work).-Making a guess of a framerate for NTSC or Pal might get you a match-Outputting the slide show will not take long so you can test differentvalues if you don't know the specs of your partially downloaded avi.-Close Project Settings and click Start Creation on the main screen.-Choose the codec to match the codec of your partially downloaded file-Choose the audio codec to match also.(I've only tried with .mp3 audio)-Click Start Creation. SSMM will create the .avi slideshow of your jpegs.

2) Use AviRepair and your slideshow .avi file to patch the missing header in your partially downloaded.avi file.

-Open AviRepair and select your slideshow .avi as the source.-Be careful that you open it as the source.-Select your partially downloaded .avi as the corrupted file.-The patching is instant. But the .avi is not quite ready for viewing yet.

17th Feb 2006 09:21 #1

Join Date: Feb 2006Location: Chillin'somewhere

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torrentcrazy

Steps to repair a partially downloaded .avi that has a missing header. http://forum.videohelp.com/threads/234499-Steps-to-repair-a-partially...

1 of 6 18/09/2013 11:12

3)Use DivFix to make your newly patched .avi file viewable. This is the last step. After DivFix rebuilds theindex, your .avi file should work.

-Open DivFix-Click Add Files to add the partially downloaded .avi that you just patched.-You could drag n drop the file instead.-Check the box for Keep original file (in case of a mishaps)-Check the box for Cut out bad parts (this is what fixes the file)-Where you see the disk icon at the top, choose a place to save the output-Click on Rebuild Index and wait for it to churn out a working .avi file.-That's it

If your media player will open the .avi, but it plays garbled, then run it through DivFix to rebuild theindex again. This shouldn't be neccessary though.

The above steps should work for partial .avi files dowloaded from emule, bittorrent, etc. Why did I messaround with this? Cuz I'm not only torrent crazy, but also addicted to downloading "rare" files fromemule. Some of those files are never gonna show up as complete.

Keywords: .avi with missing header, no header in .avi

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Awesome technique , this steps really works for me.

Thanks

good work.

9th Dec 2006 23:08 #2

Join Date: Dec 2006Location: India

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mkumar_20xx

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If the original file source was a DVD movie then the framerate for NTSC is more likely to be 23.976

10th Dec 2006 03:05 #3

Join Date: Apr 2004Location: Miskatonic U

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guns1inger

Read my blog here.

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Thank you very much!After some trys, I did it!The video was encoded with vc-1 wmv3. The only solution that worked was to create a file with aboutthe same duration of the original avi using the SlideShowMovieMaker. With files of diferent durations itdidn't work.Luckly I had some informations about the file because it's an episode of anime and was encoded like theprevious episodes (but to use the header of the other episodes didn't work)And SSMovieMaker has a bug. The time you put in the Wizard is calculated like you were using 25 fps. Inmy case the file was 119.880 fps, so I'd to divide 119.880 by 25 and multiplicate the result by theduration.But thanks, thanks, thanks!!*and sorry by my bad english*

13th May 2009 13:38 #4

Join Date: May 2009Location: Brazil

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Leo Reiss

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Is there a similar process for repairing a truncated mp4 video file?

6th Aug 2009 23:58 #5

Join Date: Aug 2009Location: United States

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videoquestion

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8th Dec 2009 05:38 #6


2 of 6 18/09/2013 11:12

hi,i've found out a way that's more easier and should work with all types of video files:You need 1. the corrupted file 2. a second, similar, correct working videofile which might have the samespec's as header (e.g. another episode of the same anime series encoded equal..).now take a simple file splitter/merger like 'Split Files 1.5': http://www.altarsoft.com/split_files.shtml?action=download or 'JR Split File': http://www.convertjunction.com/download/jsplit.zip(both freeware, thx!) and split both files in parts of e.g. 2 MB (even at least the lenght of theappropriated new header so not too short!).Replace the first part of the corrupted file with the first of the working file by changing the filename ofthis part.Merge the corrupted file parts (with the first part of the working file instead of the corrupted file's firstpart as new replaced header), now cut out more missing videoparts with divFix++ and that's it! (I'vetried it out with 'split files 1,5' several times now and it always works fine...)Caution: You only can do it with a 'simple' file splitter/merger, a normal video splitter puts a new headerat the beginning of each splitted part so it does not work...

ps: recovering missing video information by opening videofiles/parts and replacing lost data in an normaleditor like windows notepad also might be a procedure in case of really severe bugs without success byusing previously written methods, but i have'nt tried it out yet...

gr33+z ;D}-{

Join Date: Dec 2009Location: Germany

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dtrieb

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If you are unsure of the details of your corrupted AVI, then I suggest you use GSpot, as it seems to stillcorrectly identify framerate/aspect and audio information, even when the header is missing.

14th Feb 2011 12:10 #7

Join Date: Nov 2004Location: UK

Member

bolinboy

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Hello,

I have an avi that I made using Speedy video capture. For some reason this video did not opened withWMP but I followed the steps here and I sort of got it to work. It works but It's very zoomed in and a bitlow quality but that's ok, I can see only top 1/4 of the screen, I've tried many options with SSMM37 butto now effect. I've also tried using AVI repair with a good file created using the same program, but theimage stays garbled in the diagonal.

In SSMM37 if I change the size from any other than 640x480 the image stays garbled in the diagonal.

I've also tried the technique of splitting the files, replacing the first 1/2 of a good file saved using alsospeedy and the bad one. It works but after the first few seconds of good film it goes garbled just like thein the result above.

I've also tried having VirtualDub fixing the index, also garbled.

I'm out of options here, the fact that I manage to get 1/4 of the screen area in a avi that I can see tellsme that the damaged file has the data there, but I am unable to fix it.

I would appreciate any help, as this is a very important file that I cannot replicate.

Thanks

27th Jul 2011 09:25 #8

Join Date: Jul 2011

Member

pmoreira

Quote

I FUCKING LOVE YOU, SIR.

I just got done recording a 2-hour or so block of video for my Let's Plays and ended up staring at abroken file out of Hypercam 3. This guide plus a little finagling with VDubMod or whatever its called justrescued me from re-recording the last two hours of my life. You sir, are a godsend. THANK YOU SOMUCH FOR THIS GUIDE. TuT

30th Jun 2012 01:20 #9

Join Date: Jun 2012Location: Connecticut, USA

Member

XenonRT


3 of 6 18/09/2013 11:12

Click above to go to my YouTube channel! Thanks for checkin' it out!

Quote

The fact that you get a picture but it's messed up (zoomed and/or garbled) means that either a) youmust use the exact dimensions of the corrupt video when creating a file to use for repair, b) the garbledpart of the video is missing or corrupt itself (not just the header) and there is nothing you can do aboutthat (the video data isn't there to fix to begin with, or c) you might try another player besides WMP, tryVLC or media player classic (mpc-hc). I've noticed that sometimes VLC will play videos that are garbledin other players. It's worth a shot. Sorry I couldn't help further.

20th Jun 2013 18:25 #10


Member

torrentcrazyOriginally Posted by pmoreira

Hello,

I have an avi that I made using Speedy video capture. For some reason this video did notopened with WMP but I followed the steps here and I sort of got it to work. It works but It'svery zoomed in and a bit low quality but that's ok, I can see only top 1/4 of the screen, I'vetried many options with SSMM37 but to now effect. I've also tried using AVI repair with a goodfile created using the same program, but the image stays garbled in the diagonal.

In SSMM37 if I change the size from any other than 640x480 the image stays garbled in thediagonal.

I've also tried the technique of splitting the files, replacing the first 1/2 of a good file savedusing also speedy and the bad one. It works but after the first few seconds of good film it goesgarbled just like the in the result above.

I've also tried having VirtualDub fixing the index, also garbled.

I'm out of options here, the fact that I manage to get 1/4 of the screen area in a avi that I cansee tells me that the damaged file has the data there, but I am unable to fix it.

I would appreciate any help, as this is a very important file that I cannot replicate.

Thanks

Quote

Thanks for the enthusiastic feedback. I'd forgotten about this thread a long time ago, but recently raninto some more video trouble so decided to check it for reference. Glad this guide helped you and a fewothers!

20th Jun 2013 18:28 #11


Member

torrentcrazyOriginally Posted by XenonRT

I FUCKING LOVE YOU, SIR.

I just got done recording a 2-hour or so block of video for my Let's Plays and ended up staringat a broken file out of Hypercam 3. This guide plus a little finagling with VDubMod or whateverits called just rescued me from re-recording the last two hours of my life. You sir, are agodsend. THANK YOU SO MUCH FOR THIS GUIDE. TuT

Quote

20th Jun 2013 18:36 #12


Member

torrentcrazyOriginally Posted by dtrieb

hi,i've found out a way that's more easier and should work with all types of video files:You need 1. the corrupted file 2. a second, similar, correct working videofile which might havethe same spec's as header (e.g. another episode of the same anime series encoded equal..).now take a simple file splitter/merger like 'Split Files 1.5': http://www.altarsoft.com/split_files.shtml?action=download or 'JR Split File': http://www.convertjunction.com/download/jsplit.zip (both freeware, thx!) and split both files in parts of e.g. 2 MB (even at least the


4 of 6 18/09/2013 11:12

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This is indeed a much easier solution. Those with corrupted or missing header video files, you all shouldtry this approach first. It's quicker, less complicated and accomplishes the same results in replacing theheader and getting the video to play. Bonus is that it may work with other video formats like thedreaded corrupt .mp4 that no seems to be able to fix.

I just tried it on a corrupt .mp4 that none of the freeware video repair solutions could fix. It didn't getthe video to play all the way, but it at least opened up with the first working segment having replacedthe first corrupted segment. I don't think both of my files were the same specs (the working video hadsmaller dimensions and possibly a different framerate). No time to tweak and play with it more rightnow, but I will continue to see if I can get the damaged .mp4 to play by using the above method.

Thanks dtrieb for an easier solution to fixing .avi (and other formats) with missing or corrupted headers.

lenght of the appropriated new header so not too short!).Replace the first part of the corrupted file with the first of the working file by changing thefilename of this part.Merge the corrupted file parts (with the first part of the working file instead of the corruptedfile's first part as new replaced header), now cut out more missing videoparts with divFix++and that's it! (I've tried it out with 'split files 1,5' several times now and it always works fine...)Caution: You only can do it with a 'simple' file splitter/merger, a normal video splitter puts anew header at the beginning of each splitted part so it does not work...

ps: recovering missing video information by opening videofiles/parts and replacing lost data inan normal editor like windows notepad also might be a procedure in case of really severe bugswithout success by using previously written methods, but i have'nt tried it out yet...

gr33+z ;D}-{

Last edited by torrentcrazy; 20th Jun 2013 at 18:51.

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