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authorDerek Buitenhuis <derek.buitenhuis@gmail.com>2015-08-18 17:39:01 -0300
committerJames Almer <jamrial@gmail.com>2015-08-18 17:40:36 -0300
commitc981b1145a857c8f962c93b8eecb1c613b20ffe9 (patch)
tree3a5243c3e50f5dbf45860d62d0ae76330e9a6145 /libavcodec/libx264.c
parent87068ea5c5c800ff9bf1c3fa83665f63b07a7951 (diff)
libx264: Add option to force IDR frames
Currently, when forcing an I frame, via API, or via the ffmpeg cli, using -force_key_frames, we still let x264 decide what sort of keyframe to user. In some cases, it is useful to be able to force an IDR frame, e.g. for cutting streams. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Diffstat (limited to 'libavcodec/libx264.c')
-rw-r--r--libavcodec/libx264.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index c017685bb9..a54743e4b4 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -82,6 +82,7 @@ typedef struct X264Context {
int nal_hrd;
int avcintra_class;
int motion_est;
+ int forced_idr;
char *x264_params;
} X264Context;
@@ -270,7 +271,8 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
x4->pic.i_pts = frame->pts;
x4->pic.i_type =
- frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
+ frame->pict_type == AV_PICTURE_TYPE_I ?
+ (x4->forced_idr >= 0 ? X264_TYPE_IDR : X264_TYPE_KEYFRAME) :
frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
X264_TYPE_AUTO;
@@ -875,6 +877,7 @@ static const AVOption options[] = {
{ "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" },
{ "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = X264_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },
+ { "forced-idr", "If forcing keyframes, force them as IDR frames.", OFFSET(forced_idr), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
{ "x264-params", "Override the x264 configuration using a :-separated list of key=value parameters", OFFSET(x264_params), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ NULL },
};