li_diver Posted January 3, 2015 Share Posted January 3, 2015 Hi, I'm, having a weird problem playing some digital media, and I am not sure where to turn with this. Any help will be appreciated. I have many mp3 files, all downloaded from the same source, the same way. I am able to play all of the files on my PC without an issue. After C4 scans and they appear in my library on C4 some of the files are unlistenable. That is, they will play, but with such a heavy jitter to them that they are completely unusable, and voices are not understandable. I can play them without an issue on all other devices (PC, Stereo preamp via DLNA, AppleTV, and downloaded to Ipad/ipod), the only thing that seems to have this jitter sound is C4. Any ideas what could be causing this, and why only on my C4 system, and nowhere else? Redownloading the files would be VERY time consuming, so, before I try that, I wanted to see if anyone has any ideas. Thanks Link to comment Share on other sites More sharing options...
Cyknight Posted January 3, 2015 Share Posted January 3, 2015 MP3 is a container - so it's possible the codex used is not one C4 can handle. As per C4: Detail: We support MPEG-I layer 3 encoded MP3 files.They can be encoded anywhere from 32 - 320 Kbits/sec with CBR (Constant Bit Rate) or VBR (Variable Bit Rate).We do not support layer 2 or MPEG-II Link to comment Share on other sites More sharing options...
li_diver Posted January 3, 2015 Author Share Posted January 3, 2015 Thanks for your reply. If this were a codex c4 can't handle would I get any audio at all? I have tried playing high res FLAC files that the c4 amp cant handle, but I get no sound at all then. I have literally thousands of files, all from the same source,and almost all work fine. I suppose it is possible that one or two may be encoded differently, but I wouldn't expect it, from a comercial operation. I guess I'll have to try redownloading some of them, and maybe check with customer support at the source, and see if they know the details of how they were made. (I'm not holding out much hope that their support staff will know much)MP3 is a container - so it's possible the codex used is not one C4 can handle. Link to comment Share on other sites More sharing options...
Cyknight Posted January 4, 2015 Share Posted January 4, 2015 A lot of MP3's that are posted online have odd/non standard Kb/s ratings - if those ratings fall in the mentioned limits, it's possibly to still have them play, but with poor quality, breaks etc. You could try converting them to MP3 with a set bitrate - there's plenty of batch converters out there able to do this (the whole library at once, if you have Windows 8 etc, there's even a free one inthe Windows store for free that I'm told does a good job. Link to comment Share on other sites More sharing options...
li_diver Posted January 4, 2015 Author Share Posted January 4, 2015 Thanks. I hadn't thought of that. I could definitely try running one through a converter program. Link to comment Share on other sites More sharing options...
LSDave Posted January 4, 2015 Share Posted January 4, 2015 Could you describe what you mean by jitter? I've seen weird sampling rates cause issues on my HC800 for playback. but nothing to do with codecs. I have a pretty large library of "underground" electronic music and it ranges all sorts of bitrates and i've never had issues, as long as standard sampling rates were used. Link to comment Share on other sites More sharing options...
alanchow Posted January 4, 2015 Share Posted January 4, 2015 You may have run out of memory on your controller. If so you have pushed your system too far and need to upgrade to a newer controller Link to comment Share on other sites More sharing options...
li_diver Posted January 5, 2015 Author Share Posted January 5, 2015 It's hard for me to describe. I can hear the sound, and vaguely recognize what it is, it almost sounds like a reverb setting, only to a rediculous degree. On the tracks that have it, its barely recognizable. I did follow up on c4guru's sugestion and tried to run it through an mp3 converter, with a fixed bitrate well within control4's specs. I still have the same issue. Could you describe what you mean by jitter? I've seen weird sampling rates cause issues on my HC800 for playback. but nothing to do with codecs. I have a pretty large library of "underground" electronic music and it ranges all sorts of bitrates and i've never had issues, as long as standard sampling rates were used. Link to comment Share on other sites More sharing options...
JV Posted January 5, 2015 Share Posted January 5, 2015 Hi, I'm, having a weird problem playing some digital media, and I am not sure where to turn with this. Any help will be appreciated. I have many mp3 files, all downloaded from the same source, the same way. I am able to play all of the files on my PC without an issue. After C4 scans and they appear in my library on C4 some of the files are unlistenable. That is, they will play, but with such a heavy jitter to them that they are completely unusable, and voices are not understandable. I can play them without an issue on all other devices (PC, Stereo preamp via DLNA, AppleTV, and downloaded to Ipad/ipod), the only thing that seems to have this jitter sound is C4. Any ideas what could be causing this, and why only on my C4 system, and nowhere else? Redownloading the files would be VERY time consuming, so, before I try that, I wanted to see if anyone has any ideas. Thanks Are you using a digital amp or receiver to play the files from Control4? Are the speaker settings correct? Are you sure it's not setup for a center channel that you don't have? If that's not the case, then I'm not sure what is wrong. Link to comment Share on other sites More sharing options...
li_diver Posted January 5, 2015 Author Share Posted January 5, 2015 No, it plays file through my Marantz AV8801. The odd sound only occurs with the Control 4 amp. No speaker settings etc to worry about. Link to comment Share on other sites More sharing options...
blub Posted January 10, 2015 Share Posted January 10, 2015 Take one "broken" file of yours and convert it to a c4 compatible flac file and test it. If the flac plays fine u can at least play your files without any loss if quality. Troublwshiitimg.:Load your file into mediainfo and post the results here. Link to comment Share on other sites More sharing options...
li_diver Posted January 11, 2015 Author Share Posted January 11, 2015 Thanks for the reply blub. I ran the file through MediaInfo, here are the results: AudioFormat : MPEG AudioFormat version : Version 1Format profile : Layer 3Duration : 31mn 52sBit rate mode : ConstantBit rate : 96.0 KbpsChannel(s) : 1 channelSampling rate : 44.1 KHzCompression mode : LossyStream size : 21.9 MiB (100%)Writing library : LAME3.93 An update on this, I spoke to tech support for the company I got this from. He assured me all are recorded the same way, but, when I ran them through Mediainfo, they were not. I also had my installer over here on Friday. He did not know what to make of this. I am going to bring one of the files over to the store where I got c4 and see if it plays on there system.Take one "broken" file of yours and convert it to a c4 compatible flac file and test it. If the flac plays fine u can at least play your files without any loss if quality.Troublwshiitimg.:Load your file into mediainfo and post the results here. Link to comment Share on other sites More sharing options...
blub Posted January 11, 2015 Share Posted January 11, 2015 Have u tried to convert them to flac and then plya again in C4? Link to comment Share on other sites More sharing options...
Cyknight Posted January 11, 2015 Share Posted January 11, 2015 Can you find 10 or so random songs that you KNOW do this - PM or post them - that way I (and perhaps a few) can just try them and see if they have issues at my place.That way at least we know if it's the tracks (or there compatibility at least). Link to comment Share on other sites More sharing options...
li_diver Posted January 11, 2015 Author Share Posted January 11, 2015 Have u tried to convert them to flac and then plya again in C4?Yes. I was able to convert one of the suspect files to flac, and play it correctly. Link to comment Share on other sites More sharing options...
Cyknight Posted January 11, 2015 Share Posted January 11, 2015 Well, that likely points to the issue - the file. Now, mind you I'm NOT saying the file is BAD - just that it seems to be incompatible. Link to comment Share on other sites More sharing options...
wappinghigh Posted January 11, 2015 Share Posted January 11, 2015 Hi, I'm, having a weird problem playing some digital media, and I am not sure where to turn with this. Any help will be appreciated. I have many mp3 files, all downloaded from the same source, the same way. I am able to play all of the files on my PC without an issue. After C4 scans and they appear in my library on C4 some of the files are unlistenable. That is, they will play, but with such a heavy jitter to them that they are completely unusable, and voices are not understandable. I can play them without an issue on all other devices (PC, Stereo preamp via DLNA, AppleTV, and downloaded to Ipad/ipod), the only thing that seems to have this jitter sound is C4. Any ideas what could be causing this, and why only on my C4 system, and nowhere else? Redownloading the files would be VERY time consuming, so, before I try that, I wanted to see if anyone has any ideas. ThanksI wouldn't waste my time using C4 for music library management and playback: that's just me and my 2 cents Limited file support being one of the reasons. Sonos, or stream to the WMB or use other sources straight thru and/or re-routed using the C4 Audio analog Matrix would be my recommendation in the future. There are dozens of threads on this here on C4forums:) Link to comment Share on other sites More sharing options...
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