My Humax Forum » Freeview HD » FVP 4000T, 5000T

5000T lip-sync issues

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    dbedford

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    Hi there, we have just replaced our older Humax box which died for a 5000T. While it had more features than I think I'll ever need and with it a number of annoyances (besides being really sloooowwwww), the main one for me is lip-sync issues..

    The lip-sync can be adjusted on both the Humax and our Samsung UHD QLED TV, but no combination seems to work using the TV speakers or our attached Sonos Beam. Before we box it up and ship it back to Amazon had anyone else experienced this issue and managed to resolve it please.
    Thanks
    David
    July 19

    Wed 10 Jul 2019 13:50:27 #1 |
  2. grahamlthompson

    grahamlthompson

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    No problems with mine. Think it might be a issue with the way your TV and sound bar handles Dolby-Digital audio.

    Try the following. Reset the lip synch correction on both TV and 5000T to nothing

    Tune the box to a SD TV channel. Turn down the TV volume to avoid deafening yourself. Using the 5000T increase the volume level to near max. Turn up the TV volume to a suitable listening volume.

    Assuming you use HDMI to deliver audio to TV and sound bar.

    Press the Freeview Play button - Press right 5 times to move to settings and press OK

    Press Right and down to move to Audio and press OK. Press Down to HDMI and then right - Press Up and OK on Stereo.

    Now watch both HD and SD channels. Did this resolve the problem ?

    Welcome to our forum.

    Wed 10 Jul 2019 14:11:08 #2 |
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    dbedford

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    Thank you, yes that did work BUT... The sound is now flat with the surround sound gone. If the TV can manage it why not the Humax box I wonder?

    Wed 10 Jul 2019 16:47:57 #3 |
  4. grahamlthompson

    grahamlthompson

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    dbedford - 27 mins ago  » 
    Thank you, yes that did work BUT... The sound is now flat with the surround sound gone. If the TV can manage it why not the Humax box I wonder?

    The issue is likely that the TV can't properly decode Dolby Digital audio input via HDMI. There's no problem with my 5000T when using my Yamaha home cinema 5.1 system.

    If the sound bar has a spdif optical (toslink) input connect that to the Humax box and set the toslink out to Dolby Digital. Mute the TV when viewing a HD source or invest in a proper AV receiver.

    Wed 10 Jul 2019 17:21:39 #4 |
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    dbedford

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    Thanks again.
    Only one input into my sound bar sorry to say HDMI or optical.
    Looks like this box is going back.

    Wed 10 Jul 2019 18:28:43 #5 |
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    dbedford

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    Checking round the Internet, audio lagging video is not uncommon on Humax boxes attempting to display HD and Dolby 2.0 or 5.1.

    Wed 10 Jul 2019 19:39:21 #6 |
  7. grahamlthompson

    grahamlthompson

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    dbedford - 3 hours ago  » 
    Thanks again.
    Only one input into my sound bar sorry to say HDMI or optical.
    Looks like this box is going back.

    So use the optical input to the sound bar as suggested. toslink is s/pdif optical (SPdif is a connection jointly designed by Philips and Sony that can carry up to 5.1 Dolby Digital or DTS) using coax or optical cables. Baffled You come back with a post that says your sound bar has the connection that I suggested you use and say it does not.

    Whatever you replace it with will have the same issue. The audio format is as transmitted by the broadcaster and the required delays for the video so that the audio is in synch is built into the broadcast is built in to the broadcast. (Be it terrestrial or satellite). Until you recognise it's a limitation of your kit and perhaps actually try the suggested connection, you will get the same issue.

    That's because TV's that do not handle Dolby Digital properly is common especially on hdmi inputs. Proessing Video takes longer than audio so all sources have a delay built in to the audio stream to compensate. There is nothing wrong with the lip synch on any of Humax Freeview or Freesat boxes (including a FVP-5000T). I have 3 Humax Freeview and two Freesat Pvrs connected to my AV receiver none of them has any lip synch issues. They all output Dolby Digital on HDMI. I also use the toslink outputs to feed a toslink matrix switch to feed wireless WiFI surround headphones. The headphones which have there own DD decoder also do not have lip synch issues.

    Typical Freesat HD broadcast

    General
    ID : 2050 (0x802)
    Complete name : D:\StrictlyEpisodes\Strictly Come Dancing_20170930_1844.ts
    Format : BDAV
    Format/Info : Blu-ray Video
    File size : 7.68 GiB
    Duration : 2 h 6 min
    Overall bit rate mode : Variable
    Overall bit rate : 8 699 kb/s
    FileExtension_Invalid : m2ts mts ssif

    Video
    ID : 5400 (0x1518)
    Menu ID : 6941 (0x1B1D)
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4
    Format settings, CABAC : Yes
    Format settings, RefFrames : 4 frames
    Format settings, GOP : M=8, N=24
    Codec ID : 27
    Duration : 2 h 6 min
    Bit rate : 7 893 kb/s
    Width : 1 920 pixels
    Height : 1 080 pixels
    Display aspect ratio : 16:9
    Frame rate : 25.000 FPS
    Standard : Component
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : MBAFF
    Scan type, store method : Interleaved fields
    Scan order : Top Field First
    Bits/(Pixel*Frame) : 0.152
    Stream size : 6.96 GiB (91%)
    Color range : Limited
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio #1
    ID : 5401 (0x1519)
    Menu ID : 6941 (0x1B1D)
    Format : AC-3
    Format/Info : Audio Coding 3
    Format settings, Endianness : Big
    Codec ID : 6
    Duration : 2 h 6 min
    Bit rate mode : Constant
    Bit rate : 192 kb/s
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 kHz
    Frame rate : 31.250 FPS (1536 SPF)
    Bit depth : 16 bits
    Compression mode : Lossy
    Delay relative to video : -1 s 156 ms
    Stream size : 173 MiB (2%)
    Language : English
    Service kind : Complete Main

    Audio #2
    ID : 5402 (0x151A)
    Menu ID : 6941 (0x1B1D)
    Format : MPEG Audio
    Format version : Version 1
    Format profile : Layer 2
    Codec ID : 3
    Duration : 2 h 6 min
    Bit rate mode : Constant
    Bit rate : 256 kb/s
    Channel(s) : 2 channels
    Sampling rate : 48.0 kHz
    Compression mode : Lossy
    Delay relative to video : -1 s 96 ms
    Stream size : 231 MiB (3%)
    Language : nar

    Text
    ID : 5404 (0x151C)
    Menu ID : 6941 (0x1B1D)
    Format : DVB Subtitle
    Codec ID : 6
    Duration : 2 h 6 min
    Delay relative to video : 5 s 648 ms
    Language : English

    Recording From a Foxsat-HDR though Freeview is the same.

    The fact that converting the same HD source from Dolby-Digital to Mpeg1 layer 2 audio should prove that the lip synch issues are introduced in the TV dolby digital decoding circuitry. Perhaps you should check with the TV maker for a firmware update.

    If the delay is not correct for the DD decoding in your TV you will still have the problem. Hopefully your sound bar when connected as suggested will be OK.

    Wed 10 Jul 2019 21:47:36 #7 |
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    SSThing

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    Which version of the Sonos Beam do you have, just the soundbar or the 5.1 set that has a sub and 2 rear speakers?
    If it's just the soundbar, then you may aswell leave the Humax on stereo as there's no point sending a 5.1 signal to a stereo device. If the sound is "flat", as you report, tweak the sound from within the Sonos app.

    Wed 10 Jul 2019 22:25:25 #8 |
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    dbedford

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    My sound bar has one input HDMI, or optical which terminated in a HDMI socket. If I were to connect the sound bar to the Humax box I would get the sound feed from the Humax when using the slightly better tuners in the Samsung or watching 4K streaming video on same.

    We bought the box for the recording of 3/4 programme at once, so I guess we (my wife) can live with stereo for those recordings.
    Firmware is up to date...
    Thanks again.

    Wed 10 Jul 2019 22:26:23 #9 |
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    SSThing

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    https://en.community.sonos.com/home-theater-228993/sonos-beam-lip-sync-issue-6809828/index1.html

    As you can see, the issue does not appear to be caused by the Humax.

    Thu 11 Jul 2019 6:44:54 #10 |

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