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enable keyframe interval when recording

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Signed-off-by: 21pages <pages21@163.com>
This commit is contained in:
21pages
2023-08-07 21:32:36 +08:00
parent 8d830382de
commit 9905695699
15 changed files with 105 additions and 45 deletions
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18
libs/scrap/src/common/vpxcodec.rs
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@@ -65,8 +65,8 @@ impl EncoderApi for VpxEncoder {
c.g_w = config.width;
c.g_h = config.height;
c.g_timebase.num = config.timebase[0];
c.g_timebase.den = config.timebase[1];
c.g_timebase.num = 1;
c.g_timebase.den = 1000; // Output timestamp precision
c.rc_undershoot_pct = 95;
// When the data buffer falls below this percentage of fullness, a dropped frame is indicated. Set the threshold to zero (0) to disable this feature.
// In dynamic scenes, low bitrate gets low fps while high bitrate gets high fps.
@@ -76,9 +76,13 @@ impl EncoderApi for VpxEncoder {
// https://developers.google.com/media/vp9/bitrate-modes/
// Constant Bitrate mode (CBR) is recommended for live streaming with VP9.
c.rc_end_usage = vpx_rc_mode::VPX_CBR;
// c.kf_min_dist = 0;
// c.kf_max_dist = 999999;
c.kf_mode = vpx_kf_mode::VPX_KF_DISABLED; // reduce bandwidth a lot
if let Some(keyframe_interval) = config.keyframe_interval {
c.kf_min_dist = 0;
c.kf_max_dist = keyframe_interval as _;
} else {
c.kf_mode = vpx_kf_mode::VPX_KF_DISABLED; // reduce bandwidth a lot
}
let (q_min, q_max, b) = Self::convert_quality(config.quality);
if q_min > 0 && q_min < q_max && q_max < 64 {
c.rc_min_quantizer = q_min;
@@ -343,12 +347,12 @@ pub struct VpxEncoderConfig {
pub width: c_uint,
/// The height (in pixels).
pub height: c_uint,
/// The timebase numerator and denominator (in seconds).
pub timebase: [c_int; 2],
/// The image quality
pub quality: Quality,
/// The codec
pub codec: VpxVideoCodecId,
/// keyframe interval
pub keyframe_interval: Option<usize>,
}
#[derive(Clone, Copy, Debug)]