LG TV skip forward issue.

[boss]

For a few years I have stuck with UMS-V7.4 as this was the last version which worked well with my LG WebOS TV's.
I've tried all the versions after that but there were just too many issues.
But... the last few versions have been a lot better for me so have been working through the issues and have got 14.7 working quite well.
One issue that I have finally gotten on top of is a skip forward problem.
Any videos which are transcoded would go to the next video when I tried to skip forward to a particular spot on the current video.
Finally I believe I have sorted that out and it may be of interest to some other users.
The fix in my "LG-Webos,conf" renderer file:
Change: SeekByTime = true
To: SeekByTime = exclusive

[mik_s]

I know Subjunk has done a lot to improve transcoding on LG TVs as he has one to test on. I think HDR or something similar was a big headache to get working right.

The default conf for those should be set up correctly now so you may want to try that one over your old conf as there may be some new options added.
If there are any other major differences you could update it from your conf.

[boss]

I've tried the default LG-WebOS.conf and for me, mine works much better.
Some files will not stream with the default conf file but do stream with mine.
Just one example is that flv files will stream but they are not supported for streaming in the the default LG-WebOS.conf

[mik_s]

Might be worth getting this included in the main UMS releases but I am not sure how unified the WebOS is across the LG models so some older TVs may not have the same support as newer ones, like DTS for example.

I had a look at other LG confs and most do have SeekByTime as Exclusive too so maybe this should be changed but there could be models that use True instead better.

[SubJunk]

Thanks for the feedback! We have been working hard.
Can you let us know what exact TV you have? Maybe we need to improve detection of that model
Also if you attach your config here we can learn from it

[boss]

@SubJunk
i have 2 LG TV's.
55UJ532T (Year: 2017)
43UM7100 (Year: 2019)
LG-WebOS.conf file attached.

The only files (of the video files I have) I have to go into the transcode folder and manually choose transcoding are MKV videos with AC3 audio and 10bit.
My LG-WebOS.conf file is configured to stream MKV/AC3 files and does, except for the type above.
I could remove the AC3 from the MKV line in the conf file but then all MKV/AC3 files would be transcoded.
Not much else to do with these files as I guess they are just not supported by the LG TV's.
I case you are interested, I have attached the output from MediaInfo for one of these MKV/AC3 10bit files.

[SubJunk]

Ah interesting, there is a possible clue here:

Code: Select all

Mode extension                           : CM (complete main)

Do all of the problem files have a "Mode extension" like that?

[boss]

@SubJunk
Yes, the problem files all show "Mode extension : CM (complete main)" under the Audio section in the "MediaInfo" program.
The files without a problem do not show that line at all.

I think the problem is MKV files with a video depth 10-Bit.
All the files which I have to manually go into the TRANSCODE folder are MKV 10-Bit files.

So I guess, my TV's are trying to stream these 10-Bit MKV files but my LG TV's are not capable of doing so.
Possibly a setting in the WebOS.conf file which could stop 10-Bit MKV files being streamed.

Currently my LG-WebOS.conf file has this setting:
SupportedVideoBitDepths = 8,10
If I change it to:
SupportedVideoBitDepths = 8
Those 10-Bit MKV files work OK and transcode.

The problem with that is my LG TV's will transcode other formats which are 10-Bit so then those files will not be streamed when they can.

All my 10-Bit MKV have an audio format of AC-3.
I could remove ac3 from this line in my LG-WebOS.conf file:
Supported = f:mkv v:h264|h265|mp4|mpeg2|mpeg4asp|mpeg4sp|vp8|vp9 a:aac-lc|aac-main|he-aac|ac3|eac3|dts|mp3|mpa|opus|vorbis m:video/x-matroska

But that would transcode all the MKV files with an audio format of ac3 and the 8-Bit MKV files with an ac3 audio format which could be streamed would be transcoded.
Cheers

[SubJunk]

I don’t think it will be the 10-bit part that is breaking it. I will make you a test video to check. Can you send me a link to one of the problematic ones of yours? I don’t have any with that AC-3 mode extension

[SubJunk]

Here's a test file to see if your TV supports 10-bit video https://github.com/UniversalMediaServer ... 10-aac.mkv

By the way, we also have a lot of other sample media that we use to make sure new MediaInfo and FFmpeg versions don't break detection https://github.com/UniversalMediaServer ... ms/parsers