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Playback error


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Posted

I'm having problems playing specific movies i got recently. I've tried on both the FireTV app and just using Chrome but at specific points in the playback the image becomes distorted, or freezes on the image but the audio keeps playing. This seems to happen at the same spot in video playback. One specific time that it always happens is around 7:07

 

This issue seems to happen in all 3 of these movies

 

thanks in advance

ffmpeg.txt

embyserver.txt

Posted

Hi.  Have you tested the video with an independent player?

Posted

Yeah, playback in VLC works just fine. No issue at the specific point discussed above.

Posted

It could still be a problem with the source file and Vlc just being more resilient at not tripping over it. Can you supply a log example from fire tv playback? Thanks.

Posted

Attached

 

Just more details, every so often the video pauses for a second but the audio keeps playing. It appears to be the same location every playback. 

 

I can try to work on the video source, might take me a bit

 

Thanks

ffmpeg.txt

embyserver.txt

Posted

What if you turn off throttling?

Posted

Nope, same problem. I've attached an updated log file if that helps

ffmpeg.txt

Happy2Play
Posted

Does it play without issue if you played the secondary audio track?

Posted

Interesting, yes.

 

The video has 3 audio tracks, the last 2 are commentary tracks. With the 2 commentary tracks it plays fine, but does not play correctly with the main audio track. 

Posted

How many movies does this happen with?

Posted

I've only noticed it on 2 movies, this one and MIB 2

Posted

Have you considered converting those two files using our media conversion feature?

Posted (edited)

I figured it out. I was using MKVToolNix to change the names of the audio tracks. *EDIT* actually not sure what it is, but happens after i edit it using MKVToolNix for the audio titles. Will dig further later

Edited by keith2045
Posted

I figured it out. I was using MKVToolNix to change the names of the audio tracks. *EDIT* actually not sure what it is, but happens after i edit it using MKVToolNix for the audio titles. Will dig further later

 

@@keith2045 that's interesting, thanks for the info ! Let us know if you find anything.

 

@@softworkz is there an easy way to compare the mkv's before and after to see what might be wrong with the edited one?

Posted

@@softworkz is there an easy way to compare the mkv's before and after to see what might be wrong with the edited one?

 

@keith2045 

 

Using one of the latest beta versions in combination with the Diagnostics Plugin (https://mediabrowser.github.io/Emby.DiagnosticsPlugin/ ) would allow you to record detailed information of a transcoding process, including file analysis of input and output files.

Please let me know in case you'd need any help with that.

Posted

@@softworkz

 

Ok i have it installed and can see the new options. Anything specific i need to configure or any steps I need to do to get the information needed? 

Posted

Please activate all options of "EDD File Generation".

 

Then watch the one video for 30s.

 

After that, watch the other video for 30s

 

Finally you should see two files in the log folder having an extension of '.edd'.

Please send me those via PM,

 

Thanks!

Posted

I figured it out. I was using MKVToolNix to change the names of the audio tracks. *EDIT* actually not sure what it is, but happens after i edit it using MKVToolNix for the audio titles. Will dig further later

 

I think what you did is much more than changing track titles (maybe unintentionally though).

 

Here's a detailed comparison of the metadata:

 

mkv_compare.pdf

 

 

But I don't think that it's the metadata. What I've seen is a significant difference in the frames of the TRUEHD stream:

 

5e49fbf9d28ec_truehd1.jpg

 

 

5e49fc066179c_truehd2.jpg

 

 

Look at timestamps and PacketPos values.

 

(all other streams are very similar when looking at the single frames)

 

Whatever you did to the file - something wrong happened.

Posted

Well that's a bummer. I've done the same thing for a dozen or so other files and havent noticed anything. Guess i cant do it for these ones

 

Thanks for the help

Posted

Did the others have TRUEHD?

Posted

Hm, I don't know what happened, but we cannot provide support for 3rd party tools and how to use them (better don't at all) - I've already spent too much time on this.

 

Maybe @@Happy2Play can provide some more hints as he had the right idea pretty quickly. (not to use the TrueHD stream)

Posted

No i get it, dont blame you. 

 

I think i've fixed it. I reran MKVToolNix on a Linux machine using the CLI rather than on my windows machine. Initial testing appears to be good. 

 

Again i appreciate the help with this

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