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Lower bitrate to 75% of original when streaming H.265

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This commit is contained in:
Cameron Gutman 2015-12-12 21:06:19 -08:00
parent 4c67631ea5
commit 763f8938b3
1 changed files with 13 additions and 2 deletions
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15
moonlight-common/src/com/limelight/nvstream/rtsp/SdpGenerator.java
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@ -109,11 +109,22 @@ public class SdpGenerator {
addSessionAttribute(config, "x-nv-video[0].timeoutLengthMs", "7000"); addSessionAttribute(config, "x-nv-video[0].timeoutLengthMs", "7000");
addSessionAttribute(config, "x-nv-video[0].framesWithInvalidRefThreshold", "0"); addSessionAttribute(config, "x-nv-video[0].framesWithInvalidRefThreshold", "0");
// H.265 can encode much more efficiently, but we have a problem since not all
// users will be using H.265 and we don't have an independent bitrate setting
// for H.265. We'll use use the selected bitrate * .75 when H.265 is in use.
int bitrate;
if (context.negotiatedVideoFormat == VideoFormat.H265) {
bitrate = (int)(context.streamConfig.getBitrate()*0.75);
}
else {
bitrate = context.streamConfig.getBitrate();
}
// We don't support dynamic bitrate scaling properly (it tends to bounce between min and max and never // We don't support dynamic bitrate scaling properly (it tends to bounce between min and max and never
// settle on the optimal bitrate if it's somewhere in the middle), so we'll just latch the bitrate // settle on the optimal bitrate if it's somewhere in the middle), so we'll just latch the bitrate
// to the requested value. // to the requested value.
addSessionAttribute(config, "x-nv-vqos[0].bw.minimumBitrate", ""+context.streamConfig.getBitrate()); addSessionAttribute(config, "x-nv-vqos[0].bw.minimumBitrate", ""+bitrate);
addSessionAttribute(config, "x-nv-vqos[0].bw.maximumBitrate", ""+context.streamConfig.getBitrate()); addSessionAttribute(config, "x-nv-vqos[0].bw.maximumBitrate", ""+bitrate);
// Using FEC turns padding on which makes us have to take the slow path // Using FEC turns padding on which makes us have to take the slow path
// in the depacketizer, not to mention exposing some ambiguous cases with // in the depacketizer, not to mention exposing some ambiguous cases with