On Sun, Nov 11, 2018 at 07:07:18PM +0800, Jun Zhao wrote: > Improved the performance of 1 decode + N filter graphs and adaptive > bitrate scenario. > > With new option "-abr_pipeline" > 1. It enabled multiple filter graph concurrency, which bring above > about 5%~20% improvement in some 1:N scenario by CPU or GPU > acceleration > 2. Next step will continue to improve the concurrency of complex > filter graph which can support high efficiency of filter net > > Below are some test cases and test result as reference. > (Hardware platform: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz) > (Software: Intel iHD driver - 16.9.00100, CentOS 7) > > Command for Intel GPU acceleration case, 1 decode to N scaling: > ffmpeg -vaapi_device /dev/dri/renderD128 -hwaccel vaapi \ > -hwaccel_output_format vaapi \ > -i ~/Videos/1920x1080p_30.00_x264_qp28.h264 \ > -vf "scale_vaapi=1280:720:format=nv12,hwdownload" \ > -pix_fmt nv12 -f null /dev/null \ > -vf "scale_vaapi=720:480:format=nv12,hwdownload" \ > -pix_fmt nv12 -f null /dev/null \ > -abr_pipeline > > test results: > 2 scale > Improved ~34% > > Command for CPU only 1 decode to N scaling: > ffmpeg -i ~/Videos/1920x1080p_30.00_x264_qp28.h264 \ > -vf "scale=1280:720" -pix_fmt nv12 -f null /dev/null \ > -vf "scale=720:480" -pix_fmt nv12 -f null /dev/null \ > -abr_pipeline > > test results: > 2 scale > Improved ~25% > > Command for 1:N transcode by GPU acceleration: > ./ffmpeg -vaapi_device /dev/dri/renderD128 -hwaccel vaapi \ > -hwaccel_output_format vaapi \ > -i ~/Videos/1920x1080p_30.00_x264_qp28.h264 \ > -vf "scale_vaapi=1280:720" -c:v h264_vaapi -f null /dev/null \ > -vf "scale_vaapi=720:480" -c:v h264_vaapi -f null /dev/null \ > -abr_pipeline > > test results: > 2 scale+enc > Improved ~6.1% > > Signed-off-by: Wang, Shaofei <shaofei.w...@intel.com> > Signed-off-by: Jun Zhao <jun.z...@intel.com> > --- > fftools/ffmpeg.c | 236 > ++++++++++++++++++++++++++++++++++++++++++++--- > fftools/ffmpeg.h | 12 +++ > fftools/ffmpeg_filter.c | 6 + > fftools/ffmpeg_opt.c | 6 +- > 4 files changed, 246 insertions(+), 14 deletions(-)
this breaks build for mingw64
CC fftools/ffmpeg_filter.o
CC fftools/ffmpeg.o
src/fftools/ffmpeg_filter.c: In function ‘init_simple_filtergraph’:
src/fftools/ffmpeg_filter.c:231:39: error: incompatible types when assigning to
type ‘pthread_t’ from type ‘int’
ist->filters[i]->f_thread = 0;
^
make: *** [fftools/ffmpeg_filter.o] Error 1
make: *** Waiting for unfinished jobs....
src/fftools/ffmpeg.c: In function ‘pipeline_reap_filters’:
src/fftools/ffmpeg.c:1534:5: warning: ISO C90 forbids mixed declarations and
code [-Wdeclaration-after-statement]
OutputStream *ost = output_streams[i];
^
src/fftools/ffmpeg.c: In function ‘do_streamcopy’:
src/fftools/ffmpeg.c:2177:5: warning: ‘av_copy_packet_side_data’ is deprecated
(declared at src/libavcodec/avcodec.h:4423) [-Wdeprecated-declarations]
av_copy_packet_side_data(&opkt, pkt);
^
src/fftools/ffmpeg.c: In function ‘filter_pipeline’:
src/fftools/ffmpeg.c:2405:5: warning: ‘return’ with no value, in function
returning non-void [enabled by default]
return;
^
src/fftools/ffmpeg.c: In function ‘send_frame_to_filters’:
src/fftools/ffmpeg.c:2444:42: error: invalid operands to binary == (have
‘pthread_t’ and ‘int’)
if(ist->filters[i]->f_thread == 0) {
^
src/fftools/ffmpeg.c: In function ‘init_output_stream’:
src/fftools/ffmpeg.c:3747:9: warning: ‘avcodec_copy_context’ is deprecated
(declared at src/libavcodec/avcodec.h:4195) [-Wdeprecated-declarations]
ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
^
src/fftools/ffmpeg.c:3747:9: warning: ‘codec’ is deprecated (declared at
src/libavformat/avformat.h:878) [-Wdeprecated-declarations]
src/fftools/ffmpeg.c:3793:9: warning: ‘codec’ is deprecated (declared at
src/libavformat/avformat.h:878) [-Wdeprecated-declarations]
ost->st->codec->codec= ost->enc_ctx->codec;
^
src/fftools/ffmpeg.c: In function ‘check_keyboard_interaction’:
src/fftools/ffmpeg.c:4174:13: warning: ‘codec’ is deprecated (declared at
src/libavformat/avformat.h:878) [-Wdeprecated-declarations]
debug = input_streams[0]->st->codec->debug<<1;
^
src/fftools/ffmpeg.c:4197:13: warning: ‘codec’ is deprecated (declared at
src/libavformat/avformat.h:878) [-Wdeprecated-declarations]
input_streams[i]->st->codec->debug = debug;
^
make: *** [fftools/ffmpeg.o] Error 1
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Those who are too smart to engage in politics are punished by being
governed by those who are dumber. -- Plato
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