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MediaPortal 1
Development
General Development (no feature request here!)
MediaPortal Audio renderer - better video playback quality
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<blockquote data-quote="tourettes" data-source="post: 637513" data-attributes="member: 10858"><p>Could you check as well with the default directsound (or similar) audio renderer and compare the duration to reclock and mp audio renderer results? Since there is huge amount of audio sync adjustments done (4700+ frames drawn vs 137 sync adjustments) it is highly likely that Reclock is resampling the audio stream as well. </p><p></p><p>About the issue, is the audio drifting just a bit (lip sync getting off)? This might be aused by the fact that currently the reference clock is generated on the system clock, not on the audio clock and if those two are drifting... I haven't yet managed to implement the reference clock that would be based on the WASAPI playback buffer position.</p><p></p><p>One possibility would be the 1.0000000238 as bias value. It should be 1.0 since 3x 25.0 is 75.0. So, either the source has a bit wrong FPS value or some float calculation has issues with the accurace (althou it should be affecting the 50Hz as well). </p><p></p><p>Could you 1) provide the EVR and audio renderer logs for 75Hz and 50Hz cases 2) test how it behaves on 50Hz</p></blockquote><p></p>
[QUOTE="tourettes, post: 637513, member: 10858"] Could you check as well with the default directsound (or similar) audio renderer and compare the duration to reclock and mp audio renderer results? Since there is huge amount of audio sync adjustments done (4700+ frames drawn vs 137 sync adjustments) it is highly likely that Reclock is resampling the audio stream as well. About the issue, is the audio drifting just a bit (lip sync getting off)? This might be aused by the fact that currently the reference clock is generated on the system clock, not on the audio clock and if those two are drifting... I haven't yet managed to implement the reference clock that would be based on the WASAPI playback buffer position. One possibility would be the 1.0000000238 as bias value. It should be 1.0 since 3x 25.0 is 75.0. So, either the source has a bit wrong FPS value or some float calculation has issues with the accurace (althou it should be affecting the 50Hz as well). Could you 1) provide the EVR and audio renderer logs for 75Hz and 50Hz cases 2) test how it behaves on 50Hz [/QUOTE]
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MediaPortal 1
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MediaPortal Audio renderer - better video playback quality
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