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Thread: Panning jerky, and why no FF ?

  1. #1

    Default Panning jerky, and why no FF ?

    Hello,
    Been having a few probs with Mezzmo + Sony 403 TV, buffering issues were solved with a patched server and Sony profile (Thanks Dennis !) but now Ive noticed that when the picture pans - there is a noticeable jerk... as if the odd frame is missing, the girlfriend cant see this - but I find it annoying, if I copy a file to a memory stick the problem isnt there, so maybe a server setting ?

    Also, why cant we FAST-FORWARD ?????? I know its been discussed before, but other servers, such as WildMedia can manage it

    Failing that, is there a way to jump to, say 40mins into a movie ? Was enjoying a 2 hour+ movie the other night, and I cant sit through the first 1hr 10mins again !
    Sony 40EX403 TV, hardwired to router + PC

  2. #2
    Join Date
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    Hello,

    Can you please tell me what is the server version you're currently using (it'll be 2.1.7.x - where x is the patch number)? You can just go to Mezzmo's installation folder, right click on the file and select Properties -> Details to see that information. Or send a message to support for the latest patch

    FF/REW should work just fine, except on a file that is currently being transcoded. The reason is that until a file finishes transcoding, FF/REW is disabled, since there may not be any data at the spot you're trying to get to (and besides, Mezzmo doesn't know what will be the size of the transcoded file, so can't provide this information to the client either). After transcoding has finished (or the file is native), FF/REW should be enabled and work just fine.

    I'm not sure what exactly you mean about the panning issue, can you please e-mail support with a bit more info and I'll try to help you out.

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
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  3. #3

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    2.1.7.12 !

    I get the "cannot fast forward until transcoded" bit.... but how does WildMedia server achieve it then ???? with that one you can hold down, say, the right button on the Sony remote, and a time line appears - the cursor then scrolls across it until you let go of the button, playback then starts at THAT point !!!!!! so it IS possible ;-)

    Re "panning".... imaging watching a football match - when the action is "in close" theres no problem... but when the shot is "wide" and the camera follows the ball, the whole background moves in the opposite direction - so most of the picture is moving to the left or right... this is panning, and when this movement appears... there is a slight judder - as if the frame rate cannot keep up.
    Sony 40EX403 TV, hardwired to router + PC

  4. #4
    Join Date
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    Quote Originally Posted by Care View Post
    2.1.7.12 !

    Re "panning".... imaging watching a football match - when the action is "in close" theres no problem... but when the shot is "wide" and the camera follows the ball, the whole background moves in the opposite direction - so most of the picture is moving to the left or right... this is panning, and when this movement appears... there is a slight judder - as if the frame rate cannot keep up.
    I have seen a similar issue when transcoding an NTSC video into a PAL format, the timing conversion causing issues with video smoothness. The solution was to edit my PS3 profile so that the transcode would use an NTSC profile instead of a PAL profile (since I am in North America). If you are not sure what to edit tell me which profile you are using, I will check on my own Mezzmo install and see if I can help you with it.

  5. #5

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    Thanks for the input RMerlin...
    I have seen this when playing NTSC via my Xbox many moons ago, but suspect its not that simple - my monies on the transcoding somehow... a quick look at one of the files properties reveals 25FPS, so I'm guessing its already PAL.

    (This is a UK series... Im in UK also)
    Sony 40EX403 TV, hardwired to router + PC

  6. #6
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    Quote Originally Posted by Care View Post
    Thanks for the input RMerlin...
    I have seen this when playing NTSC via my Xbox many moons ago, but suspect its not that simple - my monies on the transcoding somehow... a quick look at one of the files properties reveals 25FPS, so I'm guessing its already PAL.

    (This is a UK series... Im in UK also)
    My problem only occured when transcoding (since my source material was all NTSC, and the default transcoding profile was PAL). This is probably not your issue then, but just to be sure, see what framerate is used for the format that is labeled as "preferedtranscode=1" in the device profile - is it also 25?
    Last edited by RMerlin; 07-11-2010 at 12:59 AM.

  7. #7

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    How do you see the framerate in the profile please ?
    Sony 40EX403 TV, hardwired to router + PC

  8. #8
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    You have to look at your device profile file. Whichever block is used for transcoding will also contain a "<framerate></framerate>" block, stating the framerate to use.

    I thought it was whichever definition that showed "preferredtranscoded", but looks like I was wrong. In my case I see one that has "baseline=1" in it, I guess that's the format primarily used whenever Mezzmo needs to transcode something?

    Anyway, this one's probably a long shot on my part, since being in the UK, it would be surprising that framerate conversion is actually the problem in your case.

  9. #9
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    Quote Originally Posted by Care View Post
    2.1.7.12 !

    I get the "cannot fast forward until transcoded" bit.... but how does WildMedia server achieve it then ???? with that one you can hold down, say, the right button on the Sony remote, and a time line appears - the cursor then scrolls across it until you let go of the button, playback then starts at THAT point !!!!!! so it IS possible ;-)
    Interesting - we'll take a look here. Is WMS configured with default settings? Is transcoding done to disk or memory?

    Re "panning".... imaging watching a football match - when the action is "in close" theres no problem... but when the shot is "wide" and the camera follows the ball, the whole background moves in the opposite direction - so most of the picture is moving to the left or right... this is panning, and when this movement appears... there is a slight judder - as if the frame rate cannot keep up.
    I understand now Is this on transcoded files only? Possibly the bitrate is not high enough (since the frame rate appears to be correct). Is it possible for you to send me the original file so that I could investigate it here?

    Quote Originally Posted by RMerlin View Post
    I thought it was whichever definition that showed "preferredtranscoded", but looks like I was wrong. In my case I see one that has "baseline=1" in it, I guess that's the format primarily used whenever Mezzmo needs to transcode something?
    Actually you are right, it should use the "preferredtranscoded" before using "baseline", if the "deliveryrules" haven't been adjusted (either directly or via the Advanced settings). For "preferredtranscoded" to work, it needs to appear in the "avcontainer" and in one of the "video" and "audio" formats. Also, if there's a closer match (e.g. a video stream matches, but the container is different), then it's considered higher than preferred, because we can then just copy the video stream which is quicker, in that case it'll go and use that container to transcode and maybe that's what is happening?

    Mezzmo Android: Install it on your tablet, smartphone, Android TV or Amazon Fire to browse and stream files from your Mezzmo library to all your devices. Full details at http://www.conceiva.com/products/mez...mo_android.asp
    Mezzmo for Kodi Add-on: Install it into Kodi to stream files from your Mezzmo library directly in Kodi. Full details at http://www.mezzmo.com/wiki/doku.php?...odi_user_guide
    Mezzmo for Roku App: Install it onto your Roku to stream files from your Mezzmo library. Full details at http://www.mezzmo.com/wiki/doku.php?...oku_user_guide
    Wiki: User Guides & Reference Manual at http://www.mezzmo.com/wiki
    Facebook: http://www.facebook.com/Mezzmo.DLNA.Server
    Twitter: https://twitter.com/conceiva_mezzmo
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  10. #10
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    Quote Originally Posted by Dennis View Post
    Actually you are right, it should use the "preferredtranscoded" before using "baseline", if the "deliveryrules" haven't been adjusted (either directly or via the Advanced settings). For "preferredtranscoded" to work, it needs to appear in the "avcontainer" and in one of the "video" and "audio" formats. Also, if there's a closer match (e.g. a video stream matches, but the container is different), then it's considered higher than preferred, because we can then just copy the video stream which is quicker, in that case it'll go and use that container to transcode and maybe that's what is happening?
    Gotcha. I wasn't entirely sure, since the device profile I looked at for reference didn't have any video format set as preferredtranscoded but did had a baseline.

    When you guys actually get some time (after the next release), it would be interesting if the device profile format could be documented (the comments present in most profiles are helpful, but still sometimes confusing a bit). It might help people who want to get more tweaking done "under the hood".

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