PS3 Media Server

by **rankafan** » Thu Jan 22, 2009 2:59 am

A longstanding issue: FFmpeg reduces AC3 5.1 to stereo:

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[Thread-173] DEBUG 02:39:14.042 Asked stream chunk [0-0] timeseek: 0.0 of BioHazard Degeneration-english.mkv and player AviSynth/FFmpeg
[Thread-173] TRACE 02:39:14.042 Starting transcode of BioHazard Degeneration-english.mkv
[win32/ffmpeg.exe] INFO 02:39:14.042 Starting C:\Program Files\PS3 Media Server\win32\ffmpeg.exe -title dummy -title dummy -i C:\Users\GEBRUI~1\AppData\Local\Temp\javaps3media\pms-avs-BioHazard Degeneration-english.mkv.avs -title dummy -title dummy -vcodec mpeg2video -f vob -acodec ac3 -threads 2 -g 1 -qscale 1 -qmin 1 -ab 640k -threads 4 -muxpreload 0 pipe:
[win32/ffmpeg.exe] INFO 02:39:14.120 Attaching thread: win32/ffmpeg.exe
[Timer-16] DEBUG 02:39:14.120 Buffered Space: 0 bytes
[Thread-172] INFO 02:39:14.744 Destroying buffer
[Thread-171] INFO 02:39:14.744 Destroying buffer
[Timer-16] DEBUG 02:39:15.134 Buffered Space: 0 bytes
[Thread-174] DEBUG 02:39:15.290 FFmpeg version SVN-r16043-Sherpya, Copyright (c) 2000-2008 Fabrice Bellard, et al.
[Thread-174] DEBUG 02:39:15.290 libavutil 49.12. 0 / 49.12. 0
[Thread-174] DEBUG 02:39:15.290 libavcodec 52. 6. 1 / 52. 6. 1
[Thread-174] DEBUG 02:39:15.290 libavformat 52.23. 1 / 52.23. 1
[Thread-174] DEBUG 02:39:15.290 libavdevice 52. 1. 0 / 52. 1. 0
[Thread-174] DEBUG 02:39:15.290 libavfilter 0. 1. 0 / 0. 1. 0
[Thread-174] DEBUG 02:39:15.290 libswscale 0. 6. 1 / 0. 6. 1
[Thread-174] DEBUG 02:39:15.290 libpostproc 51. 2. 0 / 51. 2. 0
[Thread-174] DEBUG 02:39:15.290 built on Dec 10 2008 18:25:26, gcc: 4.2.5 20080919 (prerelease) [Sherpya]
[Timer-16] DEBUG 02:39:16.148 Buffered Space: 0 bytes
[Timer-16] DEBUG 02:39:17.152 Buffered Space: 0 bytes
[Timer-16] DEBUG 02:39:18.166 Buffered Space: 0 bytes
[Timer-16] DEBUG 02:39:19.180 Buffered Space: 0 bytes
[Thread-174] DEBUG 02:39:19.242 Input #0, avs, from 'C:\Users\GEBRUI~1\AppData\Local\Temp\javaps3media\pms-avs-BioHazard Degeneration-english.mkv.avs':
[Thread-174] DEBUG 02:39:19.242 Duration: 01:36:05.79, start: 0.000000, bitrate: N/A
[Thread-174] DEBUG 02:39:19.242 Stream #0.0: Video: rawvideo, yuv420p, 1920x1080, 596600 kb/s, 23.98 tb(r)
[Thread-174] DEBUG 02:39:19.242 Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[Thread-174] DEBUG 02:39:19.242 Output #0, vob, to 'pipe:':
[Thread-174] DEBUG 02:39:19.242 Stream #0.0: Video: mpeg2video, yuv420p, 1920x1080, q=1-31, 200 kb/s, 23.98 tb(c)
[Thread-174] DEBUG 02:39:19.242 Stream #0.1: Audio: ac3, 48000 Hz, stereo, s16, 640 kb/s
------

It's a true 6 channel AC3 track, which plays fine in Mencoder. But PMS, using FFmpeg, always reduces my audio to stereo! Is there a way to fix this? Needless to say, i want just 5.1 audio.

Thanks

by **rankafan** » Fri Jan 23, 2009 11:33 pm

Anyone? Anyone? Bueller? Bueller?

by **shagrath** » Fri Jan 23, 2009 11:57 pm

rankafan wrote:Anyone? Anyone? Bueller? Bueller?

try to add "-ac 6" in ffmpeg options

by **rankafan** » Sat Jan 24, 2009 1:03 am

shagrath wrote:
rankafan wrote:Anyone? Anyone? Bueller? Bueller?

try to add "-ac 6" in ffmpeg options

You're the man!!

That solved it!

P.S. Didn't realize you could add audio options to the video settings of ffmpeg, but it works flawlessly. So, for now at least, I having an acceptable, working alternative to my crashing Mencoder MT.

by **solidsnake** » Sat Jan 24, 2009 2:44 pm

rankafan wrote:
shagrath wrote:
rankafan wrote:Anyone? Anyone? Bueller? Bueller?

try to add "-ac 6" in ffmpeg options

You're the man!! That solved it!

P.S. Didn't realize you could add audio options to the video settings of ffmpeg, but it works flawlessly. So, for now at least, I having an acceptable, working alternative to my crashing Mencoder MT.

For me it only solved a part of it. My reciever gets a digital signal now but it is only 2.1. Are there more settings wich I can use to solve this problem. Would be nice since FFmpeg is for me the only option were I can play my .mkv's with subtitles without stutering.

by **ceje** » Sat Jan 24, 2009 10:24 pm

rankafan wrote:
shagrath wrote:
rankafan wrote:Anyone? Anyone? Bueller? Bueller?

try to add "-ac 6" in ffmpeg options

You're the man!! That solved it!

P.S. Didn't realize you could add audio options to the video settings of ffmpeg, but it works flawlessly. So, for now at least, I having an acceptable, working alternative to my crashing Mencoder MT.

Can you tell me where exactly I add this "-ac 6" ?

by **rankafan** » Sat Jan 24, 2009 10:41 pm

ceje wrote:Can you tell me where exactly I add this "-ac 6" ?

I added them in "Video Files Engines", under "AviSynth/FFmpeg" encoder settings; like this:

-threads 4 -g 1 -qscale 1 -qmin 1 -ac 6

It does the trick for me.

by **ceje** » Sat Jan 24, 2009 11:29 pm

rankafan wrote:
ceje wrote:Can you tell me where exactly I add this "-ac 6" ?

I added them in "Video Files Engines", under "AviSynth/FFmpeg" encoder settings; like this:

-threads 4 -g 1 -qscale 1 -qmin 1 -ac 6

It does the trick for me.

Thanks......going to try.....

PS3 Media Server

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Re: FFmpeg reduces AC3 5.1 to stereo (SOLVED!)

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