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Discussion in 'MPEG-1 and MPEG-2 encoding (AVI to DVD)' started by ADV, Apr 3, 2002.

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  1. ADV

    ADV Guest

    I have downloaded a film from winMX in two parts (both approx 790mb), I want to join the two mpg files and then split them into three parts and burn them onto vcd using nero.
    I have joined the two files using Combiemovie and it plays just fine using wmp7(although the slider bar reaches the end half way through, but the vid keeps playing)
    I have then attempted to cut and merge this file using TMPGEnc the first of three files is fine,as i used orig.file, however when i try to create the second part using the joined file when trying to follow on from the first file the times are all f@u*ked up and TMPGEnc doesnt recognise the end point.
    I then tried to join the two files with TMPGEnc but the resulting mpg played ok to a point but then went out of sync.(at the join of the two files)........

    any sugestions??
     
    ADV, Apr 3, 2002
    #1
  2. Ketola

    Ketola Turned ninja Staff Member

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    Why would you like to split them up? 790MB VCD MPEG files should fit nicely on 80 minute CD-Rs.

    Joining MPEG files without re-encoding is rather iffy. If you really want to split up the file, I'd suggest the following procedure:
    1) Open up the first MPEG in TMPGEnc's MPEG Tools/Merge & Cut
    2) Click 'Edit', and find the position you want to cut the video at (say, 50:00:00)
    3) Select the range, click OK, choose an output file (eg. Part1.mpg), and click 'Run'
    4) Choose the rest of the clip (eg. 50:00:00 - 60:00:00, so you'd get an 10 minute clip)
    5) Save this as Part2.mpg
    6) Open up the second video file, choose a 40 minute range, and save it as Part3.mpg
    7) Save the rest of the second clip as Part4.mpg

    Now you have split the video, essentially, in three parts. Part1, Part2+3, and Part4. When you burn the second disc in Nero, just edit the properties of Part2.mpg and set the delay to 0. That way you only get a minor glitch between the two mpegs - pretty much the same what you'd get if you tried to join them.

    Hope that helps. =)
     
    Ketola, Apr 3, 2002
    #2
  3. ADV

    ADV Guest

    thanxs for the response Ketola, but call me stupid...as most of you no doubt will....but the only 80min cd-r I have say they only hold 700mb of data. Do i need new disc's or is there a special way to fit more info on a cdr?????
     
    ADV, Apr 3, 2002
    #3
  4. ADV

    ADV Guest

    tried to burn an 80 min cd with Nero all completed successfully?? but wont play on my stand alone DVD player.(Other vcd's I have burned do)How do I check the format of the files?? the extention says mpg, but reading other messages posted on here there is mpeg1/mpeg2 does this matter or should they still be playable on my stand alone?
    Have just tried another disc to no avail.
    have tried to use FlaskMpeg but it comes up with an error message :-
    This file doesn't seem to be a valid supported format.

    Any further advice would be greatly appreciated. thanx in advance.
     
    Last edited by a moderator: Apr 4, 2002
    ADV, Apr 3, 2002
    #4
  5. Ketola

    Ketola Turned ninja Staff Member

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    VideoCDs are recorded in a similar fashion to AudioCDs - 2352 bytes per sector, where as data CDs are recorded at 2048 bytes per sector, and the rest is used for error correction. That way you get a total of 2352/2048*700MB = 800MB of "storage space" on an AudioCD or a VideoCD. Nero shows the actual space consumed on the disc at the bottom of the screen.

    Did Nero complain that the video file is not compilant with VideoCD standard? Make sure you have checked the "Create standard compilant CD" in the VideoCD tab in Nero. Also, try running the MPEG through VCDGear with MPEG->MPEG option, and try again.

    http://www.afterdawn.com/software/video_software/video_tools/vcdgear.cfm
     
    Ketola, Apr 4, 2002
    #5
  6. ADV

    ADV Guest

    playing around with TMPGEnc, dropped the file into cut/merge and the drop down box changed from mpeg-1 system(standard) to mpeg-2 program(vbr), I changed the drop down to mpeg-1 video-cd and edited, all I got was a green screen, squares to the left hand side and jumpy sound when the new file was played.
    Also today, while trying different things I droped both files into Multiplex and it told me that both files are:-

    Mpeg2 480 x 480 29.97fps 2496kbps
    Mpeg1 Audio Layer-2 44100hz 224kbps

    Can you help me????

    ps D/Loaded VcdGear from link but cannot find mpeg > mpeg converter.

    Will keep trying but help would be appreciated.
     
    ADV, Apr 4, 2002
    #6
  7. Ketola

    Ketola Turned ninja Staff Member

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    You've got SuperVideoCD MPEG2 file. Try burning it with Nero's SuperVCD profile.

    VCDGear, as far as I can remember, can't handle MPEG2 files.
     
    Ketola, Apr 4, 2002
    #7
  8. ADV

    ADV Guest

    Many Thanks Jari, sorted svcd and burned ok.

    Now I have a different prob. I have D/L an avi file which plays ok.
    However I believe i have to convert it to an mpeg...So followed your article convert DivX video to videocd format using virtual dub and TMPGEnc(missing out the subtitles bit).
    I get the following message :- Detected an improper vbr audio encoding in the source avi.
    Followed the tip and the opened TMPGEnc but it says cannot open or unsupported.

    Once again your help would be invaluable.
     
    ADV, Apr 7, 2002
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  9. Ketola

    Ketola Turned ninja Staff Member

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    VBR audio tracks are a pain in the.. umm.. ass. Especially for TMPGEnc. Try extracting the audio using Virtualdub (Save WAV...), then decoding it with eg. CDEx (the WAV file is still MP3 encoded), and then using it as audio input in Virtualdub (Audio, WAV audio...).
     
    Ketola, Apr 7, 2002
    #9
  10. ADV

    ADV Guest

    ok so I've figured out that I had to save the audio as a wav.
    but what does illegal floating point decimal calculator mean?
     
    ADV, Apr 7, 2002
    #10
  11. Ketola

    Ketola Turned ninja Staff Member

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    That's a tricky one. I've had quite a few of those when trying to encode from DivX source. There's probably a bad frame in the video (or audio) stream somewhere. There's really no easy way around it... You could try re-encoding the video with Virtualdub, but that's a long shot.
     
    Ketola, Apr 7, 2002
    #11
  12. ADV

    ADV Guest

    getting nowhere with vitualDub(keeps crashing).
    found the frame number is it possible to fix it or cut it out(its only in the opening titles)???
     
    ADV, Apr 8, 2002
    #12
  13. Ketola

    Ketola Turned ninja Staff Member

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    Ketola, Apr 8, 2002
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  14. ADV

    ADV Guest

    ok so I have the old version of virtual dub and this now allows me to cut out the bad frames (57 in all), how will this affect my sound???? do I have to cut this to get it in sync,? if so how do I do that?
    have saved it as a wav but cannot open it.have tried CDEx with no luck.

    Sorry to be a pain in the A@rse :)
     
    ADV, Apr 15, 2002
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  15. Ketola

    Ketola Turned ninja Staff Member

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    That's a good point. The audio will definitely be out of sync (two seconds in the end) if you delete the frames. Didn't think about that at all, sorry.

    What you should do is find the bad frame, hit home, end, and then choose Edit, Mask selected frames. This duplicates the previous frame to the bad frame. You will see it during the playback, but at least the audio stays in sync.
     
    Ketola, Apr 15, 2002
    #15
  16. DVDshmuck

    DVDshmuck Guest

    my chapters are all messed up. How can i edit chapter information?
     
    DVDshmuck, Apr 22, 2002
    #16
  17. ADV

    ADV Guest

    ok so have given up on the last film as running out of disk space so have tried to encode an .avi file to an mpg using tmpgenc, this has now been running for 17+hours(yawn)!!!!!

    Hope its worth the wait...... :eek:)

    I also have an .avi file which according to the file properties(when opened with virtual dub) has a frame rate of 23.976, what template do I use for this file??

    once again any help???
     
    ADV, Apr 27, 2002
    #17
  18. dRD

    dRD I hate titles Staff Member

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    ADV: 23.97 is called "FILM", in TMPGEnc's case, use NTSCFilm template.
     
    dRD, Apr 27, 2002
    #18
  19. ADV

    ADV Guest

    Have come across that template and have tried a short film test. The picture is great however the sound is very jerky.....any sugestions other than get a faster pc......
     
    ADV, Apr 29, 2002
    #19
  20. jackw

    jackw Member

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    Hi guys, sorry to bring this thread up again, but... I have an avi with a VBR audio track and Virtual dub tells me I have to save to wav then re-encode at 142.9 etc... so now I would like to know what program will allow me to encode at 142.9, and even if I do encode at that rate, TMPGEnc will not encode audio at 142.9, and whatever rate I choose in TMPGEnc just makes the vision go jumpy. As soon as I encode only vision, it is fine. Any help would be greatly appreciated!
     
    jackw, Jun 17, 2002
    #20
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