1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Merging AVI files without quality loss

Discussion in 'Camcorders & Video Editing' started by tooheys, Mar 11, 2012.

  1. tooheys

    tooheys Member

    Joined:
    Jan 26, 2012
    Messages:
    7
    Trophy Points:
    1
    Ratings:
    +0
    First of all apologies if this can been covered already - I did search but didn't find an answer.

    I have imported a 60 minute DV tape via Firewire to my pc with Windows Movie Maker. Annoyingly this has been split into 39 different AVI clips (total size 13 GB), so I now want to join these to one long AVI videofile. I have used Windows Movie Maker, but the output file comes to just 10 GB. I have also tried the program Ultra Video Joiner, but the results are even worse.

    1. Is there a way of importing a whole dv tape into one file with Windows Movie Maker?
    2. What (preferrably) free video editing software is available that can merge videofiles without quality loss, i.e. the output file will be 13 GB as well?
    Many thanks for your help.
    Erik
  2. grahamlthompson

    grahamlthompson Well-Known Member

    Joined:
    Aug 3, 2006
    Messages:
    18,381
    Trophy Points:
    163
    Ratings:
    +3,070
    Last edited: Mar 11, 2012
  3. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    Yuo can take your existing files and link them together using the Freeware program VirtualDub.

    You simply import the first file, by using:
    (file menu) - 'open video file', and then
    (file menu) 'Append AVI segment' to add all the others, one by one.
    Select the 'direct stream copy' option from the 'video' drop down menu, and save all the files as a single DV file, using:
    (file menu) -'Save as AVI'

    It's a direct digital copy, so no quality loss.
    • Thanks Thanks x 1
    Last edited: Mar 11, 2012
  4. simplicity96

    simplicity96 Active Member

    Joined:
    Jan 25, 2011
    Messages:
    6,438
    Trophy Points:
    136
    Ratings:
    +582
    +1 for Virtualdub
  5. tooheys

    tooheys Member

    Joined:
    Jan 26, 2012
    Messages:
    7
    Trophy Points:
    1
    Ratings:
    +0
    Thanks for this, but it looks like I'm doing something wrong. I followed your instructions, but the file size was getting huge, I stopped at 35GB as I expected the new file to be only 12GB. When I looked at the 35gb file it contained nearly 3 hours of video, the original one hour and then looped back to the beginning again. What am I doing wrong?
  6. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    Sounds as if you've missed out the step to 'direct stream copy' -

    Virtualdub will default to the 'full processing mode' which, unless you tell it otherwise, will output uncompressed video.
    That, as you've discovered , will give you huge files!!

    So after you've appended all your files, go again to the 'video' drop down menu, and make sure you select 'direct stream copy' and not 'full processing mode'.

    That will give you identical file sizes to your original (obviously -it's just a copy!!)

    It'll also be a lot quicker!!
    • Thanks Thanks x 1
  7. tooheys

    tooheys Member

    Joined:
    Jan 26, 2012
    Messages:
    7
    Trophy Points:
    1
    Ratings:
    +0
    Strange as I was sure I selected this option and have tried again but get the same result. I'm not sure what else to do?
  8. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    Sounds as if you've got the whole thing copying 3 times?... that would account fro the looping back to the beginning, and 3x13GB (39GB) for a 3 hour file.

    I've just checked my instructions with a DV.AVI file from my camcorder, and just for fun 'appended' the same fileon to the end. As a 'direct stream copy', it was, as I expected, exactly twice as long, and played back the same thing twice.

    Can you try and just append one segment to your original segment, and make sure that just plays back once?. It should also be exactly the same length as the two separate files.

    You can check the exact details of any video file using the freebie MediaInfo , just to check it's not being changed at all.......
  9. simplicity96

    simplicity96 Active Member

    Joined:
    Jan 25, 2011
    Messages:
    6,438
    Trophy Points:
    136
    Ratings:
    +582
    Don't forget after adding the first avi you have to go to the end of the file before adding another segment :)
  10. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    Now you come to mention it, I seem to remember doing that, with earlier versions of Virtualdub.

    I've not found it necessary with the version I'm using now (1.9.11).
    'Append AVI Segment' adds the new AVI onto the end of the current file, regardless of the cursor position?...
  11. Ann Perry

    Ann Perry Member

    Joined:
    Feb 29, 2012
    Messages:
    4
    Trophy Points:
    1
    Ratings:
    +0
    I usually convert and merge my mp4 and mts files with brorsoft video converter so that I can view them on my tablet without stop. It is easy to use and the merged videos remians the same quality as the orginal ones. You can try the demo version and see whether it is helpful to you. :laugh:
  12. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    OP specifically asked for lossless DV merging.

    If he wants to convert to mp4, there's no need to pay for software to do that. Squared 5 - MPEG Streamclip video converter for Mac and Windows works very well for that task , and is free.
  13. tooheys

    tooheys Member

    Joined:
    Jan 26, 2012
    Messages:
    7
    Trophy Points:
    1
    Ratings:
    +0
    Well, I finally cracked it!

    After selecting the first file, I then went to 'append' the second one and closely studied the bar at the bottom of the program. This said: 'appended 38 files in total'. So even though I only selected and appended file 2, it did append them all (and saved me some time).

    I then continued as normal and the output file is 13.9gb: perfect!

    Many thanks rogs for all your help!
    Last edited: Mar 17, 2012
  14. rogs

    rogs Active Member

    Joined:
    Mar 16, 2008
    Messages:
    1,703
    Trophy Points:
    86
    Ratings:
    +262
    Glad you've got it resolved! :)

    I hadn't realised that Virtualdub appends them all automatically. Makes sense, and I know it does that with sequential bitmaps....I should have known really......

    Although it's a freebie, 'Virtualdub' is a very powerful video editor.

    It's not always that intuitive though ..I find there are some things you need to 'practice', to remember the sequence correctly.......

    I like it because it allows me to import my Canopus HQ files, and lets me use a whole bunch of very adjustable filters, to get exactly the output I want.....

Share This Page