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author | James Dong <jdong@google.com> | 2012-09-14 10:36:53 -0700 |
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committer | James Dong <jdong@google.com> | 2012-09-14 10:36:53 -0700 |
commit | bcb54a4662bf8659762db59cd66ae3c06382fd4b (patch) | |
tree | 7a8f920b7db8d1e5b947a6f2290168d51a739c67 /media/libstagefright/OMXCodec.cpp | |
parent | afcb6aec27a52b87f3990691698ebe6b62e7a7bf (diff) | |
download | frameworks_av-bcb54a4662bf8659762db59cd66ae3c06382fd4b.zip frameworks_av-bcb54a4662bf8659762db59cd66ae3c06382fd4b.tar.gz frameworks_av-bcb54a4662bf8659762db59cd66ae3c06382fd4b.tar.bz2 |
Make a small correction in terms of GOP structure in the recorded video
When we have a 30 fps frame rate, and one second key-frame or I-frame interval,
we really would like to have for each second, 29 P-frames + 1 I-frame. Thus,
we should calculate the number of P frames so that it is equal to
frame_rate * I_frame_interval - 1
Change-Id: I5b9be6e4c101e7a6b718015aa4041496961c0f19
Diffstat (limited to 'media/libstagefright/OMXCodec.cpp')
-rwxr-xr-x | media/libstagefright/OMXCodec.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp index 233a733..07f92c7 100755 --- a/media/libstagefright/OMXCodec.cpp +++ b/media/libstagefright/OMXCodec.cpp @@ -890,7 +890,7 @@ static OMX_U32 setPFramesSpacing(int32_t iFramesInterval, int32_t frameRate) { } else if (iFramesInterval == 0) { return 0; } - OMX_U32 ret = frameRate * iFramesInterval; + OMX_U32 ret = frameRate * iFramesInterval - 1; CHECK(ret > 1); return ret; } |