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motion: h264 encoder respects quality settings

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This commit is contained in:
Joo Aun Saw 2017-06-20 11:32:39 +10:00
parent 3e76cb2c34
commit c1ed4cf807
1 changed files with 33 additions and 0 deletions
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33
package/motion/tune-h264-encode-quality.patch Normal file
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@ -0,0 +1,33 @@
diff --git a/ffmpeg.c b/ffmpeg.c
index 8f66121..9634a20 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -451,20 +451,27 @@ static int ffmpeg_set_pts(struct ffmpeg *ffmpeg, const struct timeval *tv1){
static int ffmpeg_set_quality(struct ffmpeg *ffmpeg){
char crf[4];
+ int bit_rate;
ffmpeg->opts = 0;
if (ffmpeg->vbr > 100) ffmpeg->vbr = 100;
if (ffmpeg->ctx_codec->codec_id == MY_CODEC_ID_H264 ||
ffmpeg->ctx_codec->codec_id == MY_CODEC_ID_HEVC){
if (ffmpeg->vbr > 0) {
+ if (ffmpeg->vbr < 10) ffmpeg->vbr = 10;
+ //bit_rate = ffmpeg->width * ffmpeg->height * ffmpeg->fps * quality_factor
+ bit_rate = (ffmpeg->width * ffmpeg->height * ffmpeg->fps * ffmpeg->vbr) >> 8;
ffmpeg->vbr = (int)(( (100-ffmpeg->vbr) * 51)/100);
} else {
+ bit_rate = ffmpeg->bps;
ffmpeg->vbr = 28;
}
snprintf(crf, 4, "%d",ffmpeg->vbr);
- av_dict_set(&ffmpeg->opts, "preset", "ultrafast", 0);
+ av_dict_set(&ffmpeg->opts, "preset", "slow", 0);
av_dict_set(&ffmpeg->opts, "tune", "zerolatency", 0);
av_dict_set(&ffmpeg->opts, "crf", crf, 0);
+ ffmpeg->ctx_codec->profile = FF_PROFILE_H264_HIGH;
+ ffmpeg->ctx_codec->bit_rate = bit_rate;
} else {
/* The selection of 8000 in the else is a subjective number based upon viewing output files */
if (ffmpeg->vbr > 0){