Problem playing h265 files

Reza-D

Reza-D

Active member
Hi all
I have a U1 device.
Unfortunately, it is difficult to play some 4K files with h265 codec and low bit rate.
The weird thing is that it plays 4K files with h265 codec and high bit rate without any problems !
For example, I downloaded and tested a file with two different sizes (10 GB and 40 GB) and the codec for both files was h265.
The 40 GB file played without any problems, but in the 10 GB file, sometimes the image was fast and sometimes slow.
 
Maybe the file is transcoded badly.
Try to play it using MPlayer.

Sent with my OnePlus 7 pro using Tapatalk
 
If it helps save some time (& translating everything to/from English to Persian?), the OP also PM'd me regarding this issue....

In summary, we hadn't got as far as actual frame rates, but he did confirm that the native media player on his TV & other software he tried also had problems playing back these files normally. (Also had me wondering if there was a core issue with how the files with the lower bit rates had actually been encoded to reduce the overall file size if various software/other devices were having similar problems decoding the files as well.)

He also commented that disabling Kodi's HW acceleration seemed to improve things slightly but still didn't resolve the problems fully. What's more, disabling the HW acceleration in turn affected normal playback of his other files that otherwise playback normally with the HW acceleration enabled. (That's essentially as far as we'd got.)

Additionally @Reza .....

Which version of Kodi are you using, or are you using the XBMC for MINIX fork? (I'm assuming it's the latter as you listed the availability of the "Allow Hardware Acceleration - amcodec" setting in your PM which isn't available with Kodi 17 or later.). Have you tried Kodi 18?

What resolution do you have your U1 set to? (I.e. is it set to automatic or hard set to a specific resolution such as 4K@30 Hz?)

What setting are you using for the "HDMI self adaptation" on your U1? (Off, level 1 or level 2.)

Have you also tried setting Kodi's "adjust display refresh rate" setting to on start/stop? (It's under settings / player.)

If the media you're having problems with is, for example, 4K@23.976, have you also tried hard setting the U1 display to a matching resolution & frame rate?

Does experimenting with any of these settings/options make the symptoms with these files worse or better, or still just make no difference at all?

I suspect that @Skynet has already identified a possible cause of how these files were encoded affecting normal playback, but if you're happy to experiment a little Reza, you might see some differences. (Or, none at all ;).)

Provided that these files are 100% legal to download/share too @Reza , share a link & someone with a U1 may have time to see if they can replicate the issues you've experienced. (If you're not sure regarding their legality, then obviously don't share a link!!!)

That should keep you busy for a while & let us know how it goes ;)!!
 
ArcticWolf said:
Which version of Kodi are you using, or are you using the XBMC for MINIX fork? (I'm assuming it's the latter as you listed the availability of the "Allow Hardware Acceleration - amcodec" setting in your PM which isn't available with Kodi 17 or later.). Have you tried Kodi 18?
Click to expand...
I am using XBMC for MINIX.
Other versions of Kodi on my U1 do not work properly (may require settings I am not aware of).

ArcticWolf said:
What resolution do you have your U1 set to? (I.e. is it set to automatic or hard set to a specific resolution such as 4K@30 Hz?)
Click to expand...
4K@30 Hz

ArcticWolf said:
What setting are you using for the "HDMI self adaptation" on your U1? (Off, level 1 or level 2.)
Click to expand...
I have not checked this item.
What option should it be on?

ArcticWolf said:
Have you also tried setting Kodi's "adjust display refresh rate" setting to on start/stop? (It's under settings / player.)
Click to expand...
Yes, "Set screen refresh rate" is set to start/stop.

ArcticWolf said:
If the media you're having problems with is, for example, 4K@23.976, have you also tried hard setting the U1 display to a matching resolution & frame rate?
Click to expand...
No, I do.
Where are these settings?

ArcticWolf said:
Does experimenting with any of these settings/options make the symptoms with these files worse or better, or still just make no difference at all?
Click to expand...
I will check and then inform the result.
Just please explain the bold part to me.
 
Reza-D said:
I am using XBMC for MINIX.
Other versions of Kodi on my U1 do not work properly (may require settings I am not aware of).
Click to expand...
FW013 and Kodi 18 work fine for the majority of media files. I would suggest trying that 1st. You can install on the U1 alongside xbmc for minix.
I'll leave @ArcticWolf to guide you on settings.

I would suspect the file that doesnt play is not well transcoded, file size ( within reason) has minimum impact on being playable
 
pusb87 said:
FW013 and Kodi 18 work fine for the majority of media files. I would suggest trying that 1st. You can install on the U1 alongside xbmc for minix.
I'll leave @ArcticWolf to guide you on settings.
Click to expand...
I tried all versions of Kodi.
For all of them, the image pauses about every 10 seconds during file playback.
Of course, I may need to make settings that I am unaware of them.

pusb87 said:
I would suspect the file that doesnt play is not well transcoded, file size ( within reason) has minimum impact on being playable
Click to expand...
Yes, I think so too.
As I said at the beginning, files with much higher frame rates and bit rates play without any problems.
 
Reza-D said:
I am using XBMC for MINIX.
Other versions of Kodi on my U1 do not work properly (may require settings I am not aware of).


4K@30 Hz


I have not checked this item.
What option should it be on?


Yes, "Set screen refresh rate" is set to start/stop.


No, I do.
Where are these settings?


I will check and then inform the result.
Just please explain the bold part to me.
Click to expand...

OK, try setting the display resolution to AUTO first of all rather than hard setting it to 4K@30.

Display resolution is under the U1 display settings. Try setting the U1 display resolution to match the resolution & frame rate of the media after testing with auto. (Although, I very much doubt it'll make any difference if you're already using Kodi's AFR setting anyway.) I.e. if the media is encoded at 4K@23.976, set the actual display resolution to 4K@23.976 in case the AFR isn't correctly triggering for these low bit rate files. Don't forget to change it back to auto afterwards for normal viewing.

HDMI self adaptation should be under the U1 playback settings.

Level 2 would be the preferred option but obviously the options for off, level 1 & level 2 are there depending on individual requirements.
 
ArcticWolf said:
setting
Click to expand...
I set the display resolution to AUTO and set HDMI self adaptation to level 2 (I also tried off mode and level 1).
The problem could not be solved.

ArcticWolf said:
set the actual display resolution to 4K@23.976
Click to expand...
I did not find this option in the Kodi and in Android.
The available options are:
4K @ 24
4K @ 30
4K @ 60

I ran the same files with other versions of Kodi (other than XBMC for MINIX).
The problem was solved about 90%, but not 100%.
Of course, with other versions of Kodi, sometimes the device hangs and I have to exit Kodi.
 
Reza-D said:
I set the display resolution to AUTO and set HDMI self adaptation to level 2 (I also tried off mode and level 1).
The problem could not be solved.


I did not find this option in the Kodi and in Android.
The available options are:
4K @ 24
4K @ 30
4K @ 60

I ran the same files with other versions of Kodi (other than XBMC for MINIX).
The problem was solved about 90%, but not 100%.
Of course, with other versions of Kodi, sometimes the device hangs and I have to exit Kodi.
Click to expand...

OK, so if newer versions of Kodi you've tried are handling them essentially 90% better than before, that's a fairly good indication of what's a major part of these problems.

However, are these same files also continuing to be unplayable on your TV's native media player or any other software you've tried as well?

Depending on the source & legitimacy of these unnamed files, there's really no guarantees!!
 
ArcticWolf said:
However, are these same files also continuing to be unplayable on your TV's native media player or any other software you've tried as well?
Click to expand...
I did a new review and tested 19 files.
The codec for all files is HVC1.
The frame rate of all files is 23.976.

On the TV, 13 files were played without problems and 6 files were not played at all.
On the U1, 11 files were played without problems and 8 files were played with problems.

4 of the files that were played with problems on the U1, played well on the TV.
2 of the files that the TV could not play, were well played on U1. (These 2 files had lower bit rates than the other 4 files that were not played on TV)

Files with a bit rate of 33 Mb/s were played on the TV, while files with a bit rate of 13 Mb/s were not played on the TV !
Files with a bit rate of 30 Mb/s were played on the U1, while files with a bit rate of 8 Mb/s were not played on the U1 !

All files are well played on the PC.
 
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