I did a transcode from H.264 to H.265 via Handbrake, then tried ffmpeg. Results:
74,903,299 bytes made_via_handbrake.mkv ...beautiful
25,038,616 bytes made_via_ffmpeg.mkv ...a bit of plastic-face -- full
output at end
So, I need to tweak ffmpeg's x265 parameters, but how?
How can I relate this output:
x265 [info]: HEVC encoder version 3.4+27-g5163c32d7
x265 [info]: build info [Windows][GCC 10.2.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX
FMA3 BMI2 AVX2
x265 [info]: Main profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 23 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing lslices=6 deblock sao
with the list of options here: https://ffmpeg.org/ffmpeg-codecs.html#Options-30?
There is a clue (I think): "x265 --help"... I stumbled on this:
https://ffmpeg.org/general.html#x265.
On that page is a link to here:
http://x265.org/developers.html.
I took the link but was almost immediately assaulted by a pornographic game.
Oh, dear. Does anyone have a guide to x265 they can share?
ffmpeg -i b:\BDMV\STREAM\00204.m2ts -map 0 -codec:v libx265 -codec:a copy -codec:s copy
made_via_ffmpeg.mkv
ffmpeg version 2020-12-09-git-7777e5119a-full_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg
developers
built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads
--disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2
--enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh
--enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2
--enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg
--enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi
--enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid
--enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx
--enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme
--enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame
--enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc
--enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis
--enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband
--enable-libsoxr --enable-chromaprint
libavutil 56. 62.100 / 56. 62.100
libavcodec 58.115.102 / 58.115.102
libavformat 58. 65.100 / 58. 65.100
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 92.100 / 7. 92.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
[mpegts @ 0000026acb0fb4c0] start time for stream 2 is not set in
estimate_timings_from_pts
[mpegts @ 0000026acb0fb4c0] start time for stream 3 is not set in
estimate_timings_from_pts
[mpegts @ 0000026acb0fb4c0] start time for stream 4 is not set in
estimate_timings_from_pts
[mpegts @ 0000026acb0fb4c0] Could not find codec parameters for stream 2 (Subtitle:
hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize'
(5000000) options
[mpegts @ 0000026acb0fb4c0] Could not find codec parameters for stream 3 (Subtitle:
hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize'
(5000000) options
[mpegts @ 0000026acb0fb4c0] Could not find codec parameters for stream 4 (Subtitle:
hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize'
(5000000) options
Input #0, mpegts, from 'b:\BDMV\STREAM\00204.m2ts':
Duration: 00:02:38.98, start: 11.650667, bitrate: 18758 kb/s
Program 1
Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p(progressive), 1920x1080
[SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo,
fltp, 224 kb/s
Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
Stream #0:3[0x1201]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
Stream #0:4[0x1202]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
File 'made_via_ffmpeg.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
Stream #0:1 -> #0:1 (copy)
Stream #0:2 -> #0:2 (copy)
Stream #0:3 -> #0:3 (copy)
Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
x265 [info]: HEVC encoder version 3.4+27-g5163c32d7
x265 [info]: build info [Windows][GCC 10.2.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3
BMI2 AVX2
x265 [info]: Main profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 23 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing lslices=6 deblock sao
Output #0, matroska, to 'made_via_ffmpeg.mkv':
Metadata:
encoder : Lavf58.65.100
Stream #0:0: Video: hevc (libx265), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9],
q=-1--1, 23.98 fps, 1k tbn, 23.98 tbc
Metadata:
encoder : Lavc58.115.102 libx265
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 224
kb/s
Stream #0:2: Subtitle: hdmv_pgs_subtitle ([255][255][255][255] / 0xFFFFFFFF)
Stream #0:3: Subtitle: hdmv_pgs_subtitle ([255][255][255][255] / 0xFFFFFFFF)
Stream #0:4: Subtitle: hdmv_pgs_subtitle ([255][255][255][255] / 0xFFFFFFFF)
frame= 3811 fps= 24 q=36.0 Lsize= 24452kB time=00:02:38.94
bitrate=1260.2kbits/s speed=0.985x
video:15607kB audio:4347kB subtitle:4399kB other streams:0kB global headers:2kB muxing overhead:
0.407587%
x265 [info]: frame I: 32, Avg QP:26.54 kb/s: 11742.46
x265 [info]: frame P: 967, Avg QP:28.72 kb/s: 1958.54
x265 [info]: frame B: 2812, Avg QP:34.51 kb/s: 281.93
x265 [info]: Weighted P-Frames: Y:6.5% UV:4.6%
x265 [info]: consecutive B-frames: 6.1% 4.0% 5.7% 70.7% 13.5%
encoded 3811 frames in 161.18s (23.64 fps), 803.58 kb/s, Avg QP:32.97
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
