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Issue with Firefox and transcoding

granbebegranbebe Members Posts: 45 ✭✭

Hello.
I have an issue with the web app when using Firefox (latests version of Firefox on Mac and on Windows).

Everytime I have a user starting a video media with transcoding, the server transcode the whole file immediately. That makes my CPU burning for 3 to 20 minutes depending of the video (TV show or movies).

My issue is that most of the users I share my library with, start a show and pause it for 30 minutes and then come back at ti. Everytime my CPU transconde the whole file "for nothing".

There has been a thread on the Linux server : https://forums.plex.tv/discussion/267798/help-question-regarding-transcoding-and-firefox-insane-cpu-load

I know that this issue is not there if using Safari / Chrome (or even the plex app on ios).

Is there something I can do to have the same behavior on Firefox as on Safari (which is transcoding on the fly) ?

Thanks in advance

Answers

  • granbebegranbebe Members Posts: 45 ✭✭

    I see the exact same issue with Opera.
    Is there anybody other than me having the same transcoding issue ?

  • OttoKernerOttoKerner Members, Plex Pass, Plex Ninja Posts: 23,593 Plex Ninja

    This issue is known and is currently investigated.

    Help others too - by reporting back with your results!
    Have you checked the Documentation before posting a question in the forums?
    Use the SEARCH function before starting a new thread!
    No PMs unless requested, please! Do not use 'verbose' logging
  • granbebegranbebe Members Posts: 45 ✭✭

    Thank you for the update :smile:

  • granbebegranbebe Members Posts: 45 ✭✭

    Hello,
    I keep having this issue. But something new : 2 days ago the transcoding issue happend with a Chrome Web browser client.
    The web app used is the one on plex.tv and my server is the latest non plexpass on Ubuntu 16.04

    Is there anything at all I can do on my side to help debugging this ?
    Is there some cache files that I could delete or something I can do to try solving this ?

  • OttoKernerOttoKerner Members, Plex Pass, Plex Ninja Posts: 23,593 Plex Ninja

    Unfortunately, I have no update on this.

    Help others too - by reporting back with your results!
    Have you checked the Documentation before posting a question in the forums?
    Use the SEARCH function before starting a new thread!
    No PMs unless requested, please! Do not use 'verbose' logging
  • DuffHQDuffHQ Members, Plex Pass Posts: 92 Plex Pass

    Firefox has done this for a long time, but now all of a sudden everything has made a turn for the worse.. Chrome causes this (but not always.. I would say 50% of the time), Safari causes this 100% and even transcoding to the Plex Media Player causes this. Only time transcoder throttles is while transcoding to ATV, iOS and Android client.

  • granbebegranbebe Members Posts: 45 ✭✭

    Yes and I don't get why there is not much threads about this.
    Is it an issue some users don't have ?

  • DuffHQDuffHQ Members, Plex Pass Posts: 92 Plex Pass
    edited August 9

    No idea about why Firefox has been like this for a long time, but I've found a way to replicate this every time and confirm this is now an issue with the new web player and every other browser as well.

    1.

    • Login to plex.tv and use the new player.
    • Transcoder does not stop before 100% of the file is done.

    2.

    • Downgrade to let's say 1.5.5 (what I did)
    • Login to plex.tv and use the new player.
    • Transcoder does not stop before 100% of the file is done, like in step 1.
    • Login directly and remotely to https://yourexternalip:port/web/index.html and use the old web player.
    • Transcoder throttles like before!

    Edit: New player also produces errors like these:

    [Transcoder] [mp4 @ 0416edc0] Application provided duration: -16 / timestamp: 258428904 is out of range for mov/mp4 format

    No other client produce this messages, not even an older version of plexweb.

    All the testing was done with the same file.

  • granbebegranbebe Members Posts: 45 ✭✭

    So this means everybody has the issue ?
    Is this a bug that the Plex team is aware of ?

  • granbebegranbebe Members Posts: 45 ✭✭

    I've checked the logs while a player was running and the transocder not throttle.
    There is some errors at the same time :
    Couldn't get size of file : boost::filesystem::file_size: No such file or directory
    get - invalid frameRate value: 23.976
    Throttle: timed out trying to read chunk -1
    [Transcoder] [Parsed_inlineass_2 @ 0x29935c0] fontselect: Using default font family: (Arial, 400, 0) -> /usr/lib/plexmediaserver/Resources/Fonts/DejaVuSans-Regular.ttf, 0, DejaVuSans[Parsed_inlineass_2 @ 0x29935c0]

    Here are the server logs

  • Maxou44Maxou44 Members, Plex Pass Posts: 14 Plex Pass

    On Plex Pass forums, @ChuckPA told us that Plex Transcoder Team works on this issue

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