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wu...@google.com
tr...@google.com
wu...@google.com
le...@google.com
le...@google.com
The audio codec of this device has a strange behavior. It will refer to the first presentation time of the input audio frame and then accumulate the encoded frame's presentation time by itself regardless the time set by the input audio frame. For example if we keep feeding the audio frame with a fixed value, we will find the presentation of encoded frame is still increasing.
So once we pause the codec and resume, the new input audio frame will result in encoded frame with earlier timestamp because codec accumulates the timestamp from the pause moment.
For example,
If start recording at 00.00, pause recording at 02.00 and resume at 05.00.
After resume, next input audio timestamp is 05.50, but codec will result in data with timestamp 02.50. (regardless 05.50 of input audio)
ap...@google.com
Branch: androidx-main
commit ff0b75a461a537d6e37eecf0091957f8410d9ae9
Author: leo huang <leohuang@google.com>
Date: Wed Mar 23 15:48:40 2022
Fix audio/video out of sync after pause and resume on Sony G3125
The audio codec of this device will refer to the first timestamp of the input audio data and then accumulate the timestamp by itself regardless the timestamp set by the subsequent input audio data. After codec is paused and resumed, the codec will accumulate the timestamp from the last pause moment, which results in the audio to go out of sync with the video.
The workaround is to keep sending audio data to the encoder to prevent the encoder from missing the accumulation of pause intervals.
Relnote: "Fixed audio/video out of sync after pause and resume on Sony G3125."
Bug: 202799148
Test: Manual testing
Change-Id: I2a1a5c3cdb4f5908819fb93af19e237426c673fb
M camera/camera-video/src/main/java/androidx/camera/video/internal/compat/quirk/DeviceQuirksLoader.java
M camera/camera-video/src/main/java/androidx/camera/video/internal/encoder/EncoderImpl.java
A camera/camera-video/src/main/java/androidx/camera/video/internal/compat/quirk/AudioEncoderIgnoresInputTimestampQuirk.java
Description
Audio becomes out of sync after pausing video and resume.