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DVR Commercial Removal and Audio gets out of sync

nickewinickewi Posts: 5Members, Plex Pass Plex Pass

DVR Commercial Removal and Audio gets out of sync.

Have tried on two PCs and it even gets out of sync on a new AMD Ryzen 1700X processor.

Occasionally it works, but mostly the audio gets out of sync.

Is PLEX working on this or at least a way to adjust the audio to tune it back in to the lips?


  • javierdlopezjavierdlopez Posts: 3Members, Plex Pass Plex Pass

    I have the same exact issue. Turned off commercial removal feature until it gets fixed.

  • brenttempleton63brenttempleton63 Posts: 9Members, Plex Pass Plex Pass

    I've noticed it seems to occur with non HD programs more than with HD ones. For example, old TV Shows and Movies that are still in the 4x3 format. So far, New HD content seems to skip properly.

  • nickewinickewi Posts: 5Members, Plex Pass Plex Pass

    I have had it happen with both old format and new HD. Not sure if they are working on it. Would be nice for the forums to be linked when they are actively working on issues.

  • DustSt0rmDustSt0rm Posts: 66Members, Plex Pass Plex Pass

    I have had this problem for a while. Mostly on hour long shows and in the 2nd half of the recorded show. Is there a fix?

    I never had this problem with the free version of mcebuddy. I might go back to it...

  • doug@laingelectronics.comdoug@laingelectronics.com Posts: 4Validating, Plex Pass Plex Pass

    Recorded the new 911 on the 2nd half the video and audio got stuck in little loops then moved forward in small loops until the end of the show

  • jfreimanjfreiman Posts: 86Members, Plex Pass Plex Pass
    edited January 5

    Audio sync after commercial removal is usally caused by a few "bad frames" at the beginning of the original video.
    Taking from between 3-6 seconds from the beginning of the file BEFORE commercial removal usually solves this issue.
    PLEX is pretty bad at auto correcting for minor frame errors and recording that play fine on the PC will be out of sync when viewed through Plex. When this happens, you can usually snip the first 2-3 seconds from your edited (commercial free) recording and Plex will play it fine. But if it can't....
    I have seen this caused by several factors -- Processing power is not one of them.
    Just as you say, it doesn't happen on every recording, but will always fail to sync with a particular recording. This can happen when your HDD can't write the start of several new recordings simultaneously ie: 4, 5, 6, etc shows start recording at 7:59pm and the buffer can't handle it. It can also happen (on Comcast) when recording programming on the cable networks (x264 channels) -- this is usually an error inserted into Comcast transcoding the 1080i/720p ATSC source and this is a little more tricky than cutting off the first few seconds of the recording... The original will play "fine" but usually there is a minor sync issue -- not enough to bother your watching of the original recording/live tv, but the error(s) introduced to the Comcast feed can't easily be adjusted for later.
    For cable shows I REALLY want to hold onto or ones which don't air often, I usually have my PC record the same episode 2x.
    The software MCEBuddy is really great for removing commercials and has tutorials on their website on how to modify the default settings to allow for errors in the video (actually, by default, the first 3 seconds before the show starts is cut specifically to avoid this issue (audio sync) without you having to manually fix every errant file/recording.
    I hope this helps you out.

  • paul7paul7 Posts: 30Members, Plex Pass Plex Pass

    I’ve had it happen to a recording even with commercial removal turned off. It’s a literal showstopper.

  • brenttempleton63brenttempleton63 Posts: 9Members, Plex Pass Plex Pass

    I agree, I have switched away from PLEX as a DVR solution, very happy with Channels App for AppleTV and IOS, it identifies the commercials but doesn't try to automatically remove them. Will see if Plex improves over time and re-evaluate OTA DVR options.

  • AmazingRando24AmazingRando24 Posts: 742Members, Plex Pass Plex Pass

    I think the issue appearing with commercial skip is pure coincidence and not related. It seems to happen whether you delete commercials or not.

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