[FFmpeg-user] Trying to solve drop in quality
Marton Balint
cus at passwd.hu
Tue Nov 3 22:07:50 EET 2020
On Tue, 3 Nov 2020, John Harlow via ffmpeg-user wrote:
> I've been trying to hit the specs we need to match for an HLS live stream and I’ve created an ffmpeg 2 pass command to convert some existing mp4 files into HLS so they can be used.
>
> The mp4 test file I am using is http://fkwi.com/livestreams/test/currentweather.mp4 and it is 60 seconds long and 16,991,549 in size.
>
> The converted HLS file is http://fkwi.com/livestreams/test/test1/video.m3u8 and it is (naturally) 60 seconds long and the .ts files add up to 17,584,392 bytes.
>
> The quality of the HLS encode is horrible compared to the original and I can’t figure out where I am going sideways with it. I’m even trying a 2 pass encode. I convert our mp4’s to HLS all the time with no issues (but not to these specs.) We normally use 30FPS, VBR and VFR. You can see the items in the spec I am trying to hit in the mediainfo output at the end of this message.
>
> Below is my ffmpeg command, my entire ffmpeg session output plus a mediainfo report on the HLS encode. In the mediainfo output I’ve added (<——REQUIRED BY SPEC) next to the items that are being required of our video.
>
> I would appreciate any advice on how to maintain better quality on the HLS stream.
>
>
> ==========================ffmpeg command ==========================
> /usr/bin/ffmpeg -i "$SOURCE" \
> -profile:v main -level 3.1 -s 1280x720 -vf "fps=fps=30*1000/1001:round=zero" \
> -c:v libx264 -pass 1 -preset slow -x264-params "nal-hrd=cbr:scenecut=0:ref=2:force-cfr=1" -g 2 \
-g 2 is very strange, it is GOP size and expressed in number of frames,
not seconds. That surely does not help with quality.
> -b:v 2M -maxrate 2.0M -minrate 2.0M -bufsize 8M \
Is CBR really a requirement? If not, use CRF mode, alternatively with a
bitrate cap.
Regards,
Marton
> -b:a 128k -ar 48000 -f hls logfile && /usr/bin/ffmpeg -i "$SOURCE" \
> -profile:v main -level 3.1 -s 1280x720 -vf "fps=fps=30*1000/1001:round=zero" \
> -c:v libx264 -pass 2 -preset slow -x264-params "nal-hrd=cbr:scenecut=0:ref=2:force-cfr=1" -g 2 \
> -f segment -segment_list_type m3u8 -segment_list_size 0 -segment_time 6.006 -segment_time_delta 0.1 \
> -b:v 2M -maxrate 2.0M -minrate 2.0M -bufsize 8M \
> -b:a 128k -ar 48000 -start_number 0 \
> -hls_time 6 -hls_list_size 0 -f hls \
> -hls_base_url "$BASEURL" \
> -hls_segment_filename "video%04d.ts
>
> ========================== ffmpeg output =============================
>
> ffmpeg version 3.4.8 Copyright (c) 2000-2020 the FFmpeg developers
> built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
> configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --extra-cflags=' ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-libdrm --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --disable-encoder=libopus --enable-libpulse --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-l
ibvorbis --enable-libv4l2 --enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzvbi --enable-avfilter --enable-avresample --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
> libavutil 55. 78.100 / 55. 78.100
> libavcodec 57.107.100 / 57.107.100
> libavformat 57. 83.100 / 57. 83.100
> libavdevice 57. 10.100 / 57. 10.100
> libavfilter 6.107.100 / 6.107.100
> libavresample 3. 7. 0 / 3. 7. 0
> libswscale 4. 8.100 / 4. 8.100
> libswresample 2. 9.100 / 2. 9.100
> libpostproc 54. 7.100 / 54. 7.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://fkwi.com/currentweather.mp4':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf57.83.100
> Duration: 00:01:00.00, start: 0.000000, bitrate: 2265 kb/s
> Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2183 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
> Metadata:
> handler_name : VideoHandler
> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 81 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> Stream mapping:
> Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
> Stream #0:1 -> #0:1 (aac (native) -> aac (native))
> Press [q] to stop, [?] for help
> [libx264 @ 0x241d860] using SAR=1/1
> [libx264 @ 0x241d860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
> [libx264 @ 0x241d860] profile Main, level 3.1
> [libx264 @ 0x241d860] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=22 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=1 b_pyramid=0 b_adapt=1 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=2 keyint_min=1 scenecut=0 intra_refresh=0 rc_lookahead=50 rc=cbr mbtree=1 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2000 vbv_bufsize=8000 nal_hrd=cbr filler=1 ip_ratio=1.40 aq=1:1.00
> [hls @ 0x2383440] Opening 'logfile0.ts' for writing
> Output #0, hls, to 'logfile':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf57.83.100
> Stream #0:0(und): Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc (default)
> Metadata:
> handler_name : VideoHandler
> encoder : Lavc57.107.100 libx264
> Side data:
> cpb: bitrate max/min/avg: 2000000/0/2000000 buffer size: 8000000 vbv_delay: -1
> Stream #0:1(eng): Audio: aac (LC), 48000 Hz, mono, fltp, 128 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> encoder : Lavc57.107.100 aac
> [hls @ 0x2383440] Opening 'logfile1.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile2.ts' for writing9 bitrate=N/A speed=13.2x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile3.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile4.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile5.ts' for writing0 bitrate=N/A speed=12.3x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile6.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile7.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile8.ts' for writing2 bitrate=N/A speed=11.8x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile9.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile10.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile11.ts' for writing bitrate=N/A speed=11.7x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile12.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile13.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile14.ts' for writing bitrate=N/A speed=11.6x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile15.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile16.ts' for writing bitrate=N/A speed=11.3x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile17.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile18.ts' for writing bitrate=N/A speed=11.1x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile19.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile20.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile21.ts' for writing bitrate=N/A speed= 11x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile22.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile23.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile24.ts' for writing bitrate=N/A speed= 11x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile25.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile26.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile27.ts' for writing bitrate=N/A speed= 11x
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile28.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> [hls @ 0x2383440] Opening 'logfile29.ts' for writing
> [hls @ 0x2383440] Opening 'logfile.tmp' for writing
> Last message repeated 1 times
> frame= 1798 fps=322 q=-1.0 Lsize=N/A time=00:00:59.92 bitrate=N/A speed=10.7x
> video:15041kB audio:886kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
> [libx264 @ 0x241d860] frame I:899 Avg QP:41.41 size: 16733
> [libx264 @ 0x241d860] frame P:899 Avg QP:48.09 size: 399
> [libx264 @ 0x241d860] mb I I16..4: 84.2% 0.0% 15.8%
> [libx264 @ 0x241d860] mb P I16..4: 0.2% 0.0% 0.0% P16..4: 6.8% 0.0% 0.0% 0.0% 0.0% skip:93.0%
> [libx264 @ 0x241d860] coded y,uvDC,uvAC intra: 37.6% 30.1% 12.0% inter: 0.1% 0.4% 0.0%
> [libx264 @ 0x241d860] i16 v,h,dc,p: 26% 49% 19% 6%
> [libx264 @ 0x241d860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 20% 20% 5% 5% 6% 5% 6% 4%
> [libx264 @ 0x241d860] i8c dc,h,v,p: 69% 26% 4% 1%
> [libx264 @ 0x241d860] Weighted P-Frames: Y:0.0% UV:0.0%
> [libx264 @ 0x241d860] kb/s:2053.70
> [aac @ 0x23ea640] Qavg: 5516.975
> + /usr/bin/ffmpeg -i https://fkwi.com/currentweather.mp4 -profile:v main -level 3.1 -s 1280x720 -vf 'fps=fps=30*1000/1001:round=zero' -c:v libx264 -pass 2 -preset slow -x264-params nal-hrd=cbr:scenecut=0:ref=2:force-cfr=1 -g 2 -f segment -segment_list_type m3u8 -segment_list_size 0 -segment_time 6.006 -segment_time_delta 0.1 -b:v 2M -maxrate 2.0M -minrate 2.0M -bufsize 8M -b:a 128k -ar 48000 -start_number 0 -hls_time 6 -hls_list_size 0 -f hls -hls_base_url http://fkwi.com/livestreams/test/test1/ -hls_segment_filename video%04d.ts video.m3u8
> ffmpeg version 3.4.8 Copyright (c) 2000-2020 the FFmpeg developers
> built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
> configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --extra-cflags=' ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-libdrm --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --disable-encoder=libopus --enable-libpulse --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-l
ibvorbis --enable-libv4l2 --enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzvbi --enable-avfilter --enable-avresample --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
> libavutil 55. 78.100 / 55. 78.100
> libavcodec 57.107.100 / 57.107.100
> libavformat 57. 83.100 / 57. 83.100
> libavdevice 57. 10.100 / 57. 10.100
> libavfilter 6.107.100 / 6.107.100
> libavresample 3. 7. 0 / 3. 7. 0
> libswscale 4. 8.100 / 4. 8.100
> libswresample 2. 9.100 / 2. 9.100
> libpostproc 54. 7.100 / 54. 7.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://fkwi.com/currentweather.mp4':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf57.83.100
> Duration: 00:01:00.00, start: 0.000000, bitrate: 2265 kb/s
> Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2183 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
> Metadata:
> handler_name : VideoHandler
> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 81 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> Stream mapping:
> Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
> Stream #0:1 -> #0:1 (aac (native) -> aac (native))
> Press [q] to stop, [?] for help
> [libx264 @ 0x246cee0] using SAR=1/1
> [libx264 @ 0x246cee0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
> [libx264 @ 0x246cee0] profile Main, level 3.1
> [libx264 @ 0x246cee0] x264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=22 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=1 b_pyramid=0 b_adapt=1 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=2 keyint_min=1 scenecut=0 intra_refresh=0 rc_lookahead=50 rc=2pass mbtree=1 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 vbv_maxrate=2000 vbv_bufsize=8000 nal_hrd=cbr filler=1 ip_ratio=1.40 aq=1:1.00
> [hls @ 0x2444cc0] Opening 'video0000.ts' for writing
> Output #0, hls, to 'video.m3u8':
> Metadata:
> major_brand : isom
> minor_version : 512
> compatible_brands: isomiso2avc1mp41
> encoder : Lavf57.83.100
> Stream #0:0(und): Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 2000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc (default)
> Metadata:
> handler_name : VideoHandler
> encoder : Lavc57.107.100 libx264
> Side data:
> cpb: bitrate max/min/avg: 2000000/0/2000000 buffer size: 8000000 vbv_delay: -1
> Stream #0:1(eng): Audio: aac (LC), 48000 Hz, mono, fltp, 128 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> encoder : Lavc57.107.100 aac
> [hls @ 0x2444cc0] Opening 'video0001.ts' for writing bitrate=N/A speed=11.4x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0002.ts' for writing bitrate=N/A speed=11.2x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0003.ts' for writing bitrate=N/A speed=10.8x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0004.ts' for writing bitrate=N/A speed=10.5x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0005.ts' for writing bitrate=N/A speed=10.1x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0006.ts' for writing bitrate=N/A speed=9.99x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0007.ts' for writing bitrate=N/A speed=9.95x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0008.ts' for writing bitrate=N/A speed=9.83x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video0009.ts' for writing bitrate=N/A speed=9.65x
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writing
> [hls @ 0x2444cc0] Opening 'video.m3u8.tmp' for writingitrate=N/A speed=9.49x
> frame= 1798 fps=287 q=-1.0 Lsize=N/A time=00:00:59.92 bitrate=N/A speed=9.56x
> video:15291kB audio:886kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
> [libx264 @ 0x246cee0] frame I:899 Avg QP:42.31 size: 16121
> [libx264 @ 0x246cee0] frame P:899 Avg QP:45.32 size: 1296
> [libx264 @ 0x246cee0] mb I I16..4: 69.9% 0.0% 30.1%
> [libx264 @ 0x246cee0] mb P I16..4: 0.4% 0.0% 0.0% P16..4: 8.8% 0.6% 0.7% 0.0% 0.0% skip:89.6%
> [libx264 @ 0x246cee0] coded y,uvDC,uvAC intra: 29.7% 31.0% 12.5% inter: 0.0% 0.2% 0.0%
> [libx264 @ 0x246cee0] i16 v,h,dc,p: 14% 61% 8% 17%
> [libx264 @ 0x246cee0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 7% 20% 7% 9% 6% 8% 8% 16%
> [libx264 @ 0x246cee0] i8c dc,h,v,p: 56% 37% 5% 2%
> [libx264 @ 0x246cee0] Weighted P-Frames: Y:0.0% UV:0.0%
> [libx264 @ 0x246cee0] kb/s:2087.90
> [aac @ 0x246e8e0] Qavg: 5516.975
>
>
> ======================================== MEDIAINFO===========================
>
> mediainfo video0000.ts
> General
> ID : 1 (0x1)
> Complete name : video0000.ts
> Format : MPEG-TS
> File size : 1.52 MiB
> Duration : 5 s 939 ms
> Overall bit rate mode : Variable
> Overall bit rate : 2 125 kb/s
>
> Video
> ID : 256 (0x100)
> Menu ID : 1 (0x1)
> Format : AVC
> Format/Info : Advanced Video Codec
> Format profile : Main at L3.1 <——REQUIRED BY SPEC
> Format settings : CABAC / 2 Ref Frames <——REQUIRED BY SPEC
> Format settings, CABAC : Yes <——REQUIRED BY SPEC
> Format settings, Reference frames : 2 frames <——REQUIRED BY SPEC
> Format settings, GOP : M=1, N=2
> Codec ID : 27 <——REQUIRED BY SPEC
> Duration : 6 s 6 ms
> Bit rate mode : Constant <——REQUIRED BY SPEC
> Nominal bit rate : 2 000 kb/s <——REQUIRED BY SPEC
> Width : 1 280 pixels <——REQUIRED BY SPEC
> Height : 720 pixels <——REQUIRED BY SPEC
> Display aspect ratio : 16:9
> Frame rate : 29.970 (30000/1001) FPS <——REQUIRED BY SPEC
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Progressive
> Bits/(Pixel*Frame) : 0.072
> Writing library : x264 core 148 r2795 aaa9aa8
> Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=22 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=1 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=2 / keyint_min=1 / scenecut=0 / intra_refresh=0 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=2000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=2000 / vbv_bufsize=8000 / nal_hrd=cbr / filler=1 / ip_ratio=1.40 / aq=1:1.00
>
> Audio
> ID : 257 (0x101)
> Menu ID : 1 (0x1)
> Format : AAC LC
> Format/Info : Advanced Audio Codec Low Complexity
> Format version : Version 4
> Muxing mode : ADTS
> Codec ID : 15-2
> Duration : 5 s 824 ms
> Bit rate mode : Variable
> Channel(s) : 1 channel
> Channel layout : C
> Sampling rate : 48.0 kHz <——REQUIRED BY SPEC
> Frame rate : 46.875 FPS (1024 SPF)
> Compression mode : Lossy
> Delay relative to video : -21 ms
> Language : English
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
More information about the ffmpeg-user
mailing list