Some recordings fail to playback on Android TV box

[mvallevand]

I actually tested with subtitles defaulted on too earlier and didn't see any issues. The subtitle sync in the news could be better but we have no control over that.

The answers to The Chase were pretty easy.

Martin

[Jaggy]

BTW when I say out of sync I am not saying is is a little out of sync it is a big bit out of sync...like multiple seconds out of sync.

Looks like I will have to have a play with the network an CC .... but one thing that is weird is all the other stuff we are watching (mostly .mp4's) are in sync properly <confused>

[Jaggy]

hOK so just as a 'what will it do' I converted that recording I uploaded & poked it through HandBrake just using the default 'Fast 1080p30' pre select to mp4 (second time I added burn in subs) & both played fine & in audio sync on the sitting room TV. (but that is a full recode)

So next question I guess is the exact same as I my first question can you supply the syntax for a quick mp4 convert so we can see what that does?

[mvallevand]

I posted these remuxers https://forums.nextpvr.com/showthread.ph...#pid554977 but that is as far as will go. You should figure out what is causing the problem. Maybe try the build in ffmpeg decoding in uidroid to see if that helps (I tried h/w If you are creating thumbnails maybe that has an impact.

Martin

[Jaggy]

I posted these remuxers https://forums.nextpvr.com/showthread.ph...#pid554977 but that is as far as will go.  You should figure out what is causing the problem.  Maybe try the build in ffmpeg decoding in uidroid to see if that helps (I tried h/w If you are creating thumbnails maybe that has an impact.

Martin

I agree I should figure out "what is causing the problem" (I have been trying too) but I don't really know where to go from where I am at... basically as it plays the same file without issue when it is remuxed to an .mp4 I would think this shows that my basic network is fine & the only thing I can think of is the CC just doesn't like those .ts recordings & the only thing I can think of doing to the CC is a full hard reset... but I am not all that keen on doing that (especially with the way my head has been recently) because that means I would have to fully set it up again from scratch.

I did try selecting the only thing audio related I could see in the uidroid selection screen but it made no difference & yes I do have it creating thumbnails.

I have attached the logs after trying to do an automatic remux on a couple of small (Brain Busters) recordings this morning that only produced the full .mp4 (with files size) for one recording (the news ones have been doing the same thing).

This is my total PostProcessing.bat

"C:\Program Files\NextPVR\Other\ffmpeg.exe" -i %1 -vcodec copy -acodec copy -c copy -f matroska -| "C:\Program Files\NextPVR\Other\ffmpeg.exe" -i pipe: -codec copy -movflags faststart -y "%~dpn1.mp4"

exit

One other problem is when it does create a .mp4 file with size it doesn't have the subs with it which can be an issue at time for me.

[mvallevand]

Since my Chromecast played the file I could only assume it was local to you.

Sorry I don't support ffmpeg command line. Are you sure you can even put aac_latm audio and dvb subtitles directly in an mp4 container? If you are confident that only a remux is required, perhaps just make it an mkv file and ignore the pipe.

Martin

[Jaggy]

Since my Chromecast played the file I could only assume it was local to you.


Sorry I don't support ffmpeg command line.  Are you sure you can even put aac_latm audio and dvb subtitles directly in an mp4 container?  If you are confident that only a remux is required, perhaps just make it an mkv file and ignore the pipe.

Martin

I am about to try out (if my brain is willing to play ball today & it is for sure 50/50 at the moment) setting up a Dish TV SmartVU SV11 device that I have here with uidroid & see what that does with these recent TVNZ recordings.


I have 'no' knowledge of ffmpeg commands 'at all' & have no idea, or how to find out if you can put aac_latm audio & dvd subtitles directly into an mp4 container.... I assume that to get it to make a .mkv file all I would need to do it is change "%~dpn1.mp4" to "%~dpn1.mkv"

I do know that the ones that actually remux with a files size after remux do play in sync (without subtitles) with my Chromecast fine.

One other thing is for some reason of other using that simple PostProcessing.bat that I posted only some of my recordings seem to get processed & some get a 0-byte .mp4 produced (which is why I posted my logs yesterday (but they still have 0 downloads so haven't been looked at yet) to see what is going on there... & 'no' I can't read logs & make sense of them these days.

[mvallevand]

The logs were useless because they are filled with information on bad remuxing ultimately ending up with

2025-07-18 08:20:00.428 [DEBUG][33] > Conversion failed!

and

2025-07-18 08:20:08.023 [DEBUG][71] > [mp4 @ 02b2d340] Non-monotonous DTS in output stream 0:0; previous: 30491201, current: 30490560; changing to 30491202. This may result in incorrect timestamps in the output file.

so you will need to figure out a remux that works. To me it looks like you you might need transcoding to make your mp4. I couldn't make a nice mp4 just remuxing the example you uploaded.

To make the mkv just ignore the pipe "|" but I doubt it will do what you want.

Code:

"C:\Program Files\NextPVR\Other\ffmpeg.exe" -i %1 -vcodec copy -acodec copy -c:s copy -y "%~dpn1.mkv"

I figure the remuxes that work are from a different channel or an mjh URL.

Martin

[Jaggy]

I would rather not have to remux unless I have to to get them in sync.
Hopefully I will see what the smart vu 11 does sometime today.

"I figure the remuxes that work are from a different channel or an mjh URL."

The one that works is from TVNZ DVB-T & the one that fails 0 file size is TVNZ DVB-S like the one I uploaded the other day... not sure what happens to the third recording that is recorded at the same time from a different provider (TV3) as there was nothing about it being processed anywhere that I could see.... but for those logs I don't think I actually added the third one to be recorded, so ignore that at the moment.

[mvallevand]

You may need to tweak your post processing script and handle DVB-T and DVB-S differently.

Martin