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Thread: tyStudio - now and the future

  1. #1
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    tyStudio - now and the future

    As some of you have noticed - tyStudio development has been very quiet over the last month or two. This has been due to the developers being 'burned out' with the massive development effort put in at the beginning of the year.

    It is now time to do some more work. However, due to personal reasons, we are going to have to do this without Olaf. He is going to be unavailable for 6 months or so.

    The first step is to re-organise the development team so who do we have available?

    I don't need volunteers for testing, they are easy to find, what I do need is people to:

    develop, maintain and build software on:
    Windows (MSVC 6)
    Linux
    Mac
    Tivo

    I also need:
    A documentation writer and webmaster for the tyStudio site.
    Change controller (to manage, reproduce and prioritise reported bugs)

    I also need somebody to do some research into DVD formats and come up with a design for the best way to implement direct DVD production into tystudio.

    If you can help, please PM me ASAP. Please only do this if you can commit to some serious time on the project.

    Everyone else can start discussion on this thread what you think the priorities for the development team should be.

  2. #2
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    Priorities

    I think the FIRST priority should be to fix the audio sync problem when you cut the commercials out of a program!

  3. #3
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    Re: Priorities

    Originally posted by TomW
    I think the FIRST priority should be to fix the audio sync problem when you cut the commercials out of a program!
    I agree - the problem is going to be that this is in the area of code that Olaf looked after and this is a black box to me. I am going to have a very steep learning curve before I get to the bottom of it.

  4. #4
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    MrBassMan: Did olaf say he was going to show up on TSS still?
    Before PMing me: Iím not your personal tech support. If you have a question, ask in public so I don't have to repeat if somebody else asks. If you want images or slices, use emule. I will ignore all support PMs.

    Sponsor a vegetarian! I have taken the pledge, how about you?

  5. #5
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    Originally posted by AlphaWolf
    MrBassMan: Did olaf say he was going to show up on TSS still?
    He did not say - My guess is that it could still be on.

  6. #6
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    John--some suggestions:

    1) Some people seem to be having a problem with tyindex and tyserver crashing their Tivo. Short term fix, allow tyserver to work without tyindex (copy to PC and index there) so these people can load tyserver only when extracting.

    2) Either fix the sync issue or let's try to document another program (TMGENC DVD Author?) that allows for commercial cuts without sync problems. I'm going to experiment with DVD author in the next few days.

    3) Try to work with Josh for a solution. Tytools seem to sync better but the output files seem have compatability problems. Is there an easy fix that combines features from both?

    Although direct DVD support would be nice the fact that neither Olaf nor Josh have released anything yet would seem to indicate the solution isn't easy (or at least may be time consuming). I'd concentrate on the other issues first.

  7. #7
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    my thoughts

    First off.... great work by everyone involved. I know the rest of us don't say it enough.

    Thank you to everyone who's provided any scripts, etc for Tivo.

    My thoughts:

    I would really like to see following projects combined into the tystudio.

    1) Mplayer so it will use the tyserver to provide streaming shows, the set lists, etc.
    2) mfs-ftp features to allow us to put shows back into the tivo, etc.
    3) Drag and drops. etc/
    4) Content Management to grab multiple shows at once, delete them, etc. I.e. some of the kewl features that tivoweb and tytool had.

    While I don't know what has happened with Olaf, I hope he's only gone for a short period. My thoughts are, if olaf/jdinger, are awol, can we work on the areas that people have expertiece to make a good tool great?

    I.e. The audio problem is a bummer. But, maybe it's not the time to tackle it....

    I'm willing to volunteer some time with documentation, FAQs, etc. I just don't want to see this fall be the wayside.

    Thanks again!
    Shui

    P.S. Could the audio synce problem be a codec issue?
    P.P.S. Cwingert's mplayer shows audio syncs after a FF, but it always syncs back up... maybe the combining of Mplayer could help us to resolve the sync issue.
    P.P.S.S. Just trying to start conversation - not trying to step on toes.
    Last edited by shuiqlazam; 05-11-2003 at 11:43 PM.

  8. #8
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    I only have sync problems with shows with a lot of cuts, specifically some AMC movies. It seems the length of the show and number of cuts is the determining factor. I'll try burning one of the shows to DVD and see if it is a windows codec issue but I don't think so.


    Originally posted by rc3105
    the audio sync problems are usually windows codec issues with variable bitrate encoding.

    the loss of sync on cuts in tystudio & compatability problems with tytool output are two sides of the same coin, just handled differently by different approaches.

    if I lose sync on a tyedit cut (1 out of a hundred times maybe) I just generate an unedited mpeg then edit it with tmpgenc, I've never lost sync that way and the files import directly into a patched copy of spruce. pretty easy...

    --
    Riley

  9. #9
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    Originally posted by newbie
    I only have sync problems with shows with a lot of cuts, specifically some AMC movies. It seems the length of the show and number of cuts is the determining factor. I'll try burning one of the shows to DVD and see if it is a windows codec issue but I don't think so.
    I can reproduce the sync problem when using cuts. I am pretty sure this is NOT a codec issue because the same file retains perfect sync when no cuts are added.

    I have been looking at Olaf's code and mulling over what the problem and potential solutions are.

    My tests show that video gets ahead of the audio - is that what others see too? - This would imply some audio is not being cut or too much video is being cut.

  10. #10
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    mrbassman, i've had it go both ways. one of the ones that's bitten me a few times is when tydemux thinks that some audio is "missing" and it compensates by "playing the audio segment twice". this has always messed things up for me. i changed the source for tydemux to not do this playing twice thing (and even changed the message to have a "...not!" on the end ), and i haven't had that problem again.

    ronny

  11. #11
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    Originally posted by ronnythunder
    mrbassman, i've had it go both ways. one of the ones that's bitten me a few times is when tydemux thinks that some audio is "missing" and it compensates by "playing the audio segment twice". this has always messed things up for me. i changed the source for tydemux to not do this playing twice thing (and even changed the message to have a "...not!" on the end ), and i haven't had that problem again.

    ronny
    Can you PM me the changes, I will integrate them with the cvs source.

  12. #12
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    Originally posted by rc3105
    the audio sync problems are usually windows codec issues with variable bitrate encoding.

    the loss of sync on cuts in tystudio & compatability problems with tytool output are two sides of the same coin, just handled differently by different approaches.

    if I lose sync on a tyedit cut (1 out of a hundred times maybe) I just generate an unedited mpeg then edit it with tmpgenc, I've never lost sync that way and the files import directly into a patched copy of spruce. pretty easy...

    --
    Riley
    This is very good information. Are you saying that a person with a Directivo currently has the ability to take an mpg directly from tytool and import it directly into a patched copy of spruceup?

  13. #13
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    Originally posted by MrBassMan
    My tests show that video gets ahead of the audio - is that what others see too? - This would imply some audio is not being cut or too much video is being cut.
    When I was trying to get a method working with my DTivo files, I tried DVD Maestro, and noticed that when importing the .m2v and .mp2 files, that on most ones I tried, the audio was slightly different than the video. (These were originally made into generic mpg, no transcoding, then demuxed with TMPGEnc.) Maestro shows the time down to the hundredth of a second, so that gave a more "true" answer than just eyeballing it.

    My hypothesis is that EVERY file that TyStudio outputs has the chance that the audio will be slightly different than the video, and each cut introduces another chance for them to be different length.

    Uncut files, or files with only one cut at the beginning (like removing the station promos at the beginning on a full-length movie, like I've been doing for some TCM ones), play in sync because they all start off fine - but if you play them all the way to the end, the video seems to freeze while you hear audio for another instant or two.

    I've never used TyTool (just got my DTivo a couple months ago) so I don't know how that compares... but generally, when chopping up a commercial show with mpeg2vcr, I'm able to get frame-perfect cuts with no loss of sync (or not enough to notice)... I'd love to be able to do all this inside TyStudio.

    The DVD authoring doesn't concern me as I'd want to be able to make some sort of nice menu, anyways, and with the looming possibility of DVDLab working natively with 480x480 files, patching them from inside TyStudio should be, I think, pretty low priority. (Plus it's so darn easy even if you do need to do it.)

    The true test will be importing the files into Maestro and seeing exactly the same length for the video as the audio, no matter the cut...
    Last edited by Damfino; 05-12-2003 at 04:40 PM.

  14. #14
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    Sync problems, help please

    I'm using tystudio and no matter what I do I'm having sync problems, can anybody let me know what to do?
    JCase

  15. #15
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    Originally posted by snoopy
    This is very good information. Are you saying that a person with a Directivo currently has the ability to take an mpg directly from tytool and import it directly into a patched copy of spruceup?
    snoopy:

    yep, works nicely here on dtivo files. I haven't started working with SA files yet. once I get the bugs out of the 2TB server I'll start transferring all my vhs/beta/8mm archives to the server (via a SA) then setup some scripts to convert a couple hundred hours of recordings & see how well it works. probably even better since the SA can encode directly to 720*480


    MrBassMan:

    Olaf & I went round & round tuning the audio repair routines against my collection of fried streams until even the worst examples repaired as well as could be hoped for. we both have DTivos though so I expect there are still SA issuess


    ronnythunder:

    what type of tivo do you have?


    --
    Riley

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