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Improving Audio Synchronization

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Previous: 'Enforcing a Video Frame Rate'

2:13Intro

2:13Intro

2:13Intro

3:31Audio Sync Conversation Begins (Summary)

3:31Audio Sync Conversation Begins (Summary)

3:31Audio Sync Conversation Begins (Summary)

4:19#milkhit

4:19#milkhit

4:19#milkhit

4:28Why audio sync is an issue

4:28Why audio sync is an issue

4:28Why audio sync is an issue

5:30Ways to minimize the issue

5:30Ways to minimize the issue

5:30Ways to minimize the issue

6:40Creating a Debug Diagram for audio sync debug code

6:40Creating a Debug Diagram for audio sync debug code

6:40Creating a Debug Diagram for audio sync debug code

15:37Finishing up audio sync debug code

15:37Finishing up audio sync debug code

15:37Finishing up audio sync debug code

23:43Explaining and debugging debug code

23:43Explaining and debugging debug code

23:43Explaining and debugging debug code

30:00Bug in debug code encountered

30:00Bug in debug code encountered

30:00Bug in debug code encountered

31:31Addressing bug

31:31Addressing bug

31:31Addressing bug

35:00Compiling and running successfully

35:00Compiling and running successfully

35:00Compiling and running successfully

35:30Observing weird gaps in sound

35:30Observing weird gaps in sound

35:30Observing weird gaps in sound

35:55Not tracking frame time correctly

35:55Not tracking frame time correctly

35:55Not tracking frame time correctly

38:30Addressing the weird gaps

38:30Addressing the weird gaps

38:30Addressing the weird gaps

50:00Running new code for debug diagram. Sound card read seems unreliable

50:00Running new code for debug diagram. Sound card read seems unreliable

50:00Running new code for debug diagram. Sound card read seems unreliable

53:00Sound stream has to be continuous. Figuring out how far ahead of the current play cursor we should be writing

53:00Sound stream has to be continuous. Figuring out how far ahead of the current play cursor we should be writing

53:00Sound stream has to be continuous. Figuring out how far ahead of the current play cursor we should be writing

58:48Discussing possible solutions to improve audio sync

58:48Discussing possible solutions to improve audio sync

58:48Discussing possible solutions to improve audio sync

1:02:35Improving audio sync

1:02:35Improving audio sync

1:02:35Improving audio sync

1:07:20Making a running log

1:07:20Making a running log

1:07:20Making a running log

1:08:40Getting a log of our audio to do some important things

1:08:40Getting a log of our audio to do some important things

1:08:40Getting a log of our audio to do some important things

1:12:00How much granularity we have

1:12:00How much granularity we have

1:12:00How much granularity we have

1:16:20Audio latency issue found

1:16:20Audio latency issue found

1:16:20Audio latency issue found

1:19:50Closing remarks

1:19:50Closing remarks

1:19:50Closing remarks

1:20:28Q&A

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1:20:28Q&A

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1:20:28Q&A

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1:21:13Are you setup to use ASI Sound Drivers?

1:21:13Are you setup to use ASI Sound Drivers?

1:21:13Are you setup to use ASI Sound Drivers?

1:22:05Is your audio pointer code calculating independently of the variable-fixed visual frames per second?

1:22:05Is your audio pointer code calculating independently of the variable-fixed visual frames per second?

1:22:05Is your audio pointer code calculating independently of the variable-fixed visual frames per second?

1:24:35What sort of problems can high audio latency introduce?

1:24:35What sort of problems can high audio latency introduce?

1:24:35What sort of problems can high audio latency introduce?

1:27:18Could you use that anonymous union struct trick to access the members of bitmap info header structure more easily?

1:27:18Could you use that anonymous union struct trick to access the members of bitmap info header structure more easily?

1:27:18Could you use that anonymous union struct trick to access the members of bitmap info header structure more easily?

1:28:47Question about switching Audio APIs

1:28:47Question about switching Audio APIs

1:28:47Question about switching Audio APIs

1:31:42Why are we ignoring write cursor?

1:31:42Why are we ignoring write cursor?

1:31:42Why are we ignoring write cursor?

1:33:10Would splitting related functionality in separate files help?

1:33:10Would splitting related functionality in separate files help?

1:33:10Would splitting related functionality in separate files help?

1:34:10If we use the play cursor as offset, could we not overwrite previously written audio data?

1:34:10If we use the play cursor as offset, could we not overwrite previously written audio data?

1:34:10If we use the play cursor as offset, could we not overwrite previously written audio data?

1:39:37Comments about Audio APIs again

1:39:37Comments about Audio APIs again

1:39:37Comments about Audio APIs again

1:40:14Would rendering at 60 FPS help with the audio latency?

1:40:14Would rendering at 60 FPS help with the audio latency?

1:40:14Would rendering at 60 FPS help with the audio latency?

1:41:16Could you change latency values?

1:41:16Could you change latency values?

1:41:16Could you change latency values?

1:41:33Is it possible that OBS is affecting the audio latency?

1:41:33Is it possible that OBS is affecting the audio latency?

1:41:33Is it possible that OBS is affecting the audio latency?

1:42:02Closing remarks

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1:42:02Closing remarks

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1:42:02Closing remarks

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Next: 'Debugging the Audio Sync'