Comments (9)
jinlong0813
commented on May 16, 2024
1
@xiaoqunSun KEY_I_FRAME_INTERVAL设置成0，用什么方式强制获取I帧，是MediaCodec.PARAMETER_KEY_REQUEST_SYNC_FRAME吗？
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liuxinpeister
commented on May 16, 2024
1
我也碰到这个问题，最后找到的问题原因是colorformat不正确，在Android6.0上，如果使用的是硬编码器，我的是qcom的编码器，需要使用YUV420SP的colorformat，才能正常出关键帧，使用YUV420P不行。机型：小米4。
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DyncEric
commented on May 16, 2024
这个问题我们正在努力复现，多谢
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DyncEric
commented on May 16, 2024
这个问题目前来看没有特别好的解决办法，可以暂时规避掉，MediaCodec编码器如果可以定时如3s输出关键帧，则可以注释掉这行代码。
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jinlong0813
commented on May 16, 2024
目前确认是所有Android 6.0上都有这个问题。 按你说的，注释掉这句代码，Android 6.0上就只有一开始有个I帧，后面一直没有I帧了，全是P帧， MediaFormat.KEY_I_FRAME_INTERVAL设置不生效。Android 4、Android 5版本上这个设置都是生效的。 所以现在Android 6.0上要么只有第一个I帧，后面全是P帧， 要么全是I帧没有P帧， 这都不正常啊。
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mtdxc
commented on May 16, 2024
可以用软件方式强制让它生成关键帧么……
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jinlong0813
commented on May 16, 2024
@DyncEric @mtdxc 知道怎么破吗，这个问题还比较严重啊
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xiaoqunSun
commented on May 16, 2024
印象中webrtc的编码函数是可以设置生成关键帧的。
我给的建议是降 MediaFormat.KEY_I_FRAME_INTERVAL设成0，
然后自己数帧，每过几帧就强制编码器生成关键帧
也就是说自己实现KEY_I_FRAME_INTERVAL逻辑
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mtdxc
commented on May 16, 2024
V_H264Encoder::RequestKeyFrame
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