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音视频同步问题 #52

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meowlgmee opened this issue Oct 15, 2021 · 3 comments
Open

音视频同步问题 #52

meowlgmee opened this issue Oct 15, 2021 · 3 comments

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@meowlgmee
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开启垂直同步, 输出帧率小于视频文件帧率的时候, 没有丢帧去追赶音频, 会导致视频画面滞后, 音视频不同步
@rockcarry
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你是自己修改了代码吗？

@meowlgmee
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meowlgmee commented Oct 15, 2021 •
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我移植到了Linux上, 视频画面作为我整体输出的一部分, 整体输出由egl/openGL ES控制输出, 开启垂直同步,输出模式是1080i50, 即25fps/s, 视频帧率为30; 我的初步想法是 av_sync_and_complete函数返回avdiff, 而不是直接avsleep, 且av_sync_and_complete函数在render_video之前, 先判断avdiff是否过大, 如果过大, 就不render了,直接丢弃; 如果在范围内,则执行av_sleep; 这是初步想法, 还没有验证 :p

@TuringApple73
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@yunkernel 请问，你是怎么把fanplay移植到Linux的？我最近也在做这个事情，想弄一个Linux版的贡献一下

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3 participants
@rockcarry @meowlgmee @TuringApple73