No audio when playing specific DVD/ISO

[iamthrakazog]

I've tried to sort out why there's no audio for some of my DVD/ISO collection when playing on UMS. They work fine when I use my DVD disc and the codec seems to be ac3/a52 which is not an issue for other DVD/ISO in my collection.

I've attached the Debug logs. This issue happens for the renderer PS3 and one I made myself for a Sony BDP-S6500. It seems to have no audio for the same DVD on both renderers which leads me to believe the issue may be in the logs from UMS.

Thanks in advance for any help.

[iamthrakazog]

Any ideas? It is not urgent, but I do think if it effects 2 renderers, it is likely to effect more. It is just a matter of quality of product. Perhaps it will point to other issues that can be solved together.

Thanks,

[Nadahar]

The log you've attached isn't made according to the description on the top of the page, so a lot of information is missing. In addition, this probably isn't an issue with UMS but with MPlayer. If that's the case, the log might not contain any information. I doubt it's related to any particular renderer, it's probably simply that the transcoded stream created by MPlayer doesn't have a sound track.

This is from the posted log file:

Code: Select all

DEBUG 2017-08-31 22:25:46.353 [Thread-245] audio stream: 0 format: ac3 (5.1) language: en aid: 128.
DEBUG 2017-08-31 22:25:46.353 [Thread-245] audio stream: 1 format: ac3 (5.1) language: fr aid: 129.
DEBUG 2017-08-31 22:25:46.353 [Thread-245] audio stream: 2 format: ac3 (stereo) language: en aid: 130.
DEBUG 2017-08-31 22:25:46.353 [Thread-245] audio stream: 3 format: ac3 (stereo) language: en aid: 131.
DEBUG 2017-08-31 22:25:46.353 [Thread-245] number of audio channels on disk: 4.
DEBUG 2017-08-31 22:25:46.353 [Thread-245] subtitle ( sid ): 0 language: en
DEBUG 2017-08-31 22:25:46.353 [Thread-245] subtitle ( sid ): 1 language: es
DEBUG 2017-08-31 22:25:46.353 [Thread-245] number of subtitles on disk: 2
DEBUG 2017-08-31 22:25:46.353 [Thread-245] 
DEBUG 2017-08-31 22:25:46.353 [Thread-245] success: format: 2  data: 0x0 - 0x778f0800
DEBUG 2017-08-31 22:25:46.398 [Thread-245] MPEG-PS file format detected.
DEBUG 2017-08-31 22:25:46.398 [Thread-245] MPEG: No audio stream found -> no sound.
DEBUG 2017-08-31 22:25:46.399 [Thread-245] VIDEO:  MPEG2  720x480  (aspect 3)  29.970 fps  9800.0 kbps (1225.0 kbyte/s)

UMS asks MPlayer to use the audio stream with id 128, which is the first one (AC3 5.1, English). A few lines below, MPlayer reports "No audio stream found". MPlayer more or less dead, but I guess you could try to download a newer version and replace the file in the "UMS installation folder"\win32 folder with the downloaded one. I would rename the existing file in case the new one is worse.

[iamthrakazog]

I apologize for not making the debug file as required. I'll re-read the debug log instructions and make effort to do it right.

I'm curious about MPlayer. I thought FFmpeg, then MEncoder and tsMuxeR were the engine priority. I'll do the update as you suggested and post the results.

Thanks greatly for the tip.

[Nadahar]

MEncoder is the only one capable of reading DVDs, so it's always used for DVD regardless of your settings (except if you disable it, in which case DVD doesn't work at all).