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SageTV Software Discussion related to the SageTV application produced by SageTV. Questions, issues, problems, suggestions, etc. relating to the SageTV software application should be posted here. (Check the descriptions of the other forums; all hardware related questions go in the Hardware Support forum, etc. And, post in the customizations forum instead if any customizations are active.)

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Old 01-23-2010, 03:19 AM
jryan15 jryan15 is offline
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One video that won't output sound...

Hello. I'm having a problem with one particular video file that will not output any sound when played back through sagetv. I've verified that with media player classic, the file has sound, but just nothing with sage. I pulled up the ac3filter window while the video was playing in sage, and all of the green bars were moving indicating that sound was being mixed properly. I am just clueless when it comes to troubleshooting codec/filter/rendering issues. If anyone could help me enter into a troubleshooting mode, I would love to learn.

Thanks!
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File Type: jpg audio issue.jpg (294.7 KB, 192 views)
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Old 01-23-2010, 11:10 AM
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Fuzzy Fuzzy is offline
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It looks to me that something is tying up the Digital output on the sound card. (As demonstrated by the SPDIF Status listed as 'Disabled (Disallowed)'. What is your speaker config (analog computer speakers, digital to a receiver, etc).
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Old 01-23-2010, 05:42 PM
tonysathre tonysathre is offline
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I had this problem with one video. I ran it through mkvmerge and that fixed it.
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Old 01-23-2010, 10:51 PM
jryan15 jryan15 is offline
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Quote:
Originally Posted by Fuzzy View Post
It looks to me that something is tying up the Digital output on the sound card. (As demonstrated by the SPDIF Status listed as 'Disabled (Disallowed)'. What is your speaker config (analog computer speakers, digital to a receiver, etc).
Thanks for the input, Fuzzy. With your observations, we figured out the problem. Here's the info, in case anyone else has the same problem.

********************************************

We found out that the problem was that the sample rate for ac3filter didn't match the compatible sample rates of our sound card. I took some screen capture shots to better illustrate.

In the first picture you see that our sound card only supports a sample rate of 48.0kHz, but the ac3filter "Rate" was set to "AS IS." So if the movie was recorded using a sample rate of anything but 48.0kHz, the sound won't work. For the video(s) that we had problems with, the sampling rate was 44.1k, thus no audio!

We changed the "Rate" in the ac3filter settings to match the compatible sample rate of our sound card (from "AS IS" to "48000"). Once this was completed, we had sound.
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File Type: jpg NO-Sound.jpg (327.9 KB, 180 views)
File Type: jpg HAS-Sound.jpg (333.2 KB, 209 views)
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Last edited by jryan15; 01-23-2010 at 11:32 PM.
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