Without this setting, bitrate may have no effect
if the default value of bitrate mode is VBR.
Signed-off-by: Ming Qian <[email protected]>
---
libavcodec/v4l2_m2m_enc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/v4l2_m2m_enc.c b/libavcodec/v4l2_m2m_enc.c
index 8454e2326c..6296ad88c6 100644
--- a/libavcodec/v4l2_m2m_enc.c
+++ b/libavcodec/v4l2_m2m_enc.c
@@ -191,6 +191,7 @@ static int v4l2_prepare_encoder(V4L2m2mContext *s)
/* set ext ctrls */
v4l2_set_ext_ctrl(s, MPEG_CID(HEADER_MODE),
MPEG_VIDEO(HEADER_MODE_SEPARATE), "header mode", 0);
+ v4l2_set_ext_ctrl(s, MPEG_CID(BITRATE_MODE), MPEG_VIDEO(BITRATE_MODE_CBR),
"bit rate mode", 1);
v4l2_set_ext_ctrl(s, MPEG_CID(BITRATE) , avctx->bit_rate, "bit rate", 1);
v4l2_set_ext_ctrl(s, MPEG_CID(FRAME_RC_ENABLE), 1, "frame level rate
control", 0);
v4l2_set_ext_ctrl(s, MPEG_CID(GOP_SIZE), avctx->gop_size,"gop size", 1);
--
2.26.0
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