2014-03-12, 12:51
(2014-03-12, 00:19)popcornmix Wrote: Thanks for info. I've played your file a dozen times and it has always started without noise.I'm unable to test using dvdplayer due to dvdplayer not really working over here (256mb rpi) but for me omxplayer also has this short 'sound burst' at the beginning of playback.
Can you confirm this issue is new (from about 1st March / small audio packet concatenation patch)?
You are definitely using Milhouse's latest build. (which fixed for me an issue exactly like the one you describe).
It's not really doing any harm right now (really just a few ms of distortion/white noise) but it definitely is there and it also occurs on nearly all files I play.
Not talking about mp3 here but about regular mkv-files containing series and stuff.
€DIT: this definitely started occuring somewhere around the audio patch.
I would say about 1st of March should be where it started as I remember thinking that this could be related to the newest audio changes.
This issue did not start occuring somewhere in between, so I think it is related to the packet concatenation.
I've just confirmed that the issue still stands on the newest release from Milhouse:
Quote:OpenELEC (Milhouse) Version: devel-20140312020133-r17896-g10b90c5
OpenELEC git: 10b90c5c60c52cfe662aa89c06227ca467a5b6ef
OpenELEC:~ # uname -a
Linux OpenELEC 3.13.6 #1 PREEMPT Wed Mar 12 00:22:33 GMT 2014 armv6l GNU/Linux
OpenELEC:~ # vcgencmd version
Mar 10 2014 21:47:27
Copyright © 2012 Broadcom
version 2375441df366a702b88684435fa0df35497342eb (clean) (release)
I do not use passthrough as my TV is my playback-device.
If there is anything else I can figure out for you, please let me know.
This is the mediainfo of the file (playing the german audio stream):
Code:
General
Format : Matroska
Format version : Version 2
File size : 1.39 GiB
Duration : 40mn 32s
Overall bit rate : 4 917 Kbps
Encoded date : UTC 2012-09-17 20:54:44
Writing application : mkvmerge v5.0.1 ('Es ist Sommer') built on Oct 13 2011 06:24:21
Writing library : libebml v1.2.2 + libmatroska v1.3.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 40mn 32s
Bit rate : 4 243 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.184
Stream size : 1.20 GiB (86%)
Title : tvp-leverage-s04e03-720p
Language : German
Default : Yes
Forced : Yes
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Format profile : Dolby Digital
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 40mn 32s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 55.7 MiB (4%)
Language : German
Default : Yes
Forced : Yes
Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 40mn 32s
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 111 MiB (8%)
Language : English
Default : No
Forced : NoRegards
€DIT2:
Just did a fresh boot (wanted to enable debugging). Started the file above and only heard a short 'beep' (low pitched) instead of white noise.
Second start of the same file resulted in white noise then. There seems to be some connection to previously played files - but something also happens if the device has been freshly powered up and nothing was played before...
I've uploaded the section where the playback starts:
http://xbmclogs.com/show.php?id=147979
