scottk/UltraGrid
1
0
Fork 0
mirror of https://github.com/outbackdingo/UltraGrid.git synced 2026-03-22 01:40:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

lavc: enable interlaced DCT for libx264

Browse Source 
Now it doesn't seem to increase frame variance as it used to with
current x264 and parameter set. On contrary, it improves visual quality
when there are motion and reduces compressed pictures' sizes on average.
This commit is contained in:
Martin Pulec
2023-01-16 10:22:03 +01:00
parent 535cb706d6
commit 680ee52ebd
1 changed files with 4 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/video_compress/libavcodec.cpp
View File

@@ -1734,8 +1734,8 @@ static void configure_amf([[maybe_unused]] AVCodecContext *codec_ctx, [[maybe_un
check_av_opt_set<const char *>(codec_ctx->priv_data, "header_insertion_mode", "gop", "header_insertion_mode for AMF");
}
ADD_TO_PARAM("lavc-h264-interlaced-dct", "* lavc-h264-interlaced-dct\n"
" Use interlaced DCT for H.264\n");
ADD_TO_PARAM("lavc-h264-no-interlaced-dct", "* lavc-h264-no-interlaced-dct\n"
" Do not use interlaced DCT for H.264\n");
ADD_TO_PARAM("lavc-rc-buffer-size-factor", "* lavc-rc-buffer-size-factor=<val>\n"
" Multiplier how much can individual frame overshot average size (default x264/5: " TOSTRING(DEFAULT_X26X_RC_BUF_SIZE_FACTOR) ", nvenc: 1).\n");
static void configure_x264_x265(AVCodecContext *codec_ctx, struct setparam_param *param)
@@ -1762,11 +1762,8 @@ static void configure_x264_x265(AVCodecContext *codec_ctx, struct setparam_param
//codec_ctx->rc_qsquish = 0;
//codec_ctx->scenechange_threshold = 100;
if (get_commandline_param("lavc-h264-interlaced-dct")) {
// this options increases variance in frame sizes quite a lot
if (param->desc.interlacing == INTERLACED_MERGED) {
codec_ctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
}
if (param->desc.interlacing == INTERLACED_MERGED && get_commandline_param("lavc-h264-no-interlaced-dct") == NULL) {
codec_ctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
}
string x265_params;