FFmpeg refs
Is it normal ? ref frame number should be bf/2 b setting b_ref_mode to middle. /opt/ffmpeg/bin/ffmpeg -loglevel verbose -re - ... ,Summary of the bug: Number of reference frames on output for ffmpeg-qsv is 3. But for ffmpeg-vaapi by default - 2 and I cannot set it through -refs 3 option. ,2014年1月20日 — 原本作法. ffmpeg -i input -c:v libx264 -b:v 1000k output.mp4. 此時output.mp4 的Encode Settings 如下: cabac=1 / ref=3 / deblock=1:0:0 ... ,refs integer (encoding,video). Set reference frames to consider for motion compensation. trellis integer (encoding,audio,video). Set rate-distortion optimal ... ,ffmpeg -i INPUT -an -pass 1 -s WIDTHxHEIGHT -vcodec libx264 -b BIT_RATE -flags +loop -cmp +chroma -partitions 0 -me epzs -subq 1 -trellis 0 -refs 1 -coder 0 ... ,2014年2月25日 — ffmpeg -i inputfile.avi -f psp -acodec libfaac -ab 94k -vcodec libx264 -cqp 28 -coder 1 -refs 3 -deblockalpha 1 -deblockbeta -1 -me_method umh ... ,ffmpeg -i input.h264 -s 1280x720 -filter:v yadif -pix_fmt yuv420p -vcodec ... so if you want mediainfo to say "ReFrames 2", add -refs 1 -x264opts ... ,2019年7月3日 — Set b_pyramid to 1. If set to 2, x264 will force minimum refs to 4. ,--ref <integer> (x264) -refs <integer> (FFmpeg) One of H.264's most useful features is the abillity to reference frames other than the one immediately prior to the ... ,如果要覆蓋ref 與bframes 的值為4 與5，可以使用"-refs 4 -bf 5" 或"-x264opts ref=4:bframes=6"。 覆蓋ref 值為4: ffmpeg -i input.m2ts -c:v libx264 -crf 18 -refs 4 -preset ...
| 相關軟體 x264 Video Codec (64-bit) 資訊 | |
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 FFmpeg refs 相關參考資料
#7302 (h264_nvenc b_ref_mode middle with refs parameter ...
Is it normal ? ref frame number should be bf/2 b setting b_ref_mode to middle. /opt/ffmpeg/bin/ffmpeg -loglevel verbose -re - ... https://trac.ffmpeg.org #8134 ([FFmpeg-vaapi][encode] caanot setup number of ...
Summary of the bug: Number of reference frames on output for ffmpeg-qsv is 3. But for ffmpeg-vaapi by default - 2 and I cannot set it through -refs 3 option. https://trac.ffmpeg.org ffmpeg -- 使用ffmpeg 命令降低H.264 檔案大小 - Albert 的筆記本
2014年1月20日 — 原本作法. ffmpeg -i input -c:v libx264 -b:v 1000k output.mp4. 此時output.mp4 的Encode Settings 如下: cabac=1 / ref=3 / deblock=1:0:0 ... http://albert-oma.blogspot.com FFmpeg Codecs Documentation
refs integer (encoding,video). Set reference frames to consider for motion compensation. trellis integer (encoding,audio,video). Set rate-distortion optimal ... https://ffmpeg.org FFMPEGX264 how to use them together - Stack Overflow
ffmpeg -i INPUT -an -pass 1 -s WIDTHxHEIGHT -vcodec libx264 -b BIT_RATE -flags +loop -cmp +chroma -partitions 0 -me epzs -subq 1 -trellis 0 -refs 1 -coder 0 ... https://stackoverflow.com ffmpeg转码参数-陈胜纲的博客-51CTO博客
2014年2月25日 — ffmpeg -i inputfile.avi -f psp -acodec libfaac -ab 94k -vcodec libx264 -cqp 28 -coder 1 -refs 3 -deblockalpha 1 -deblockbeta -1 -me_method umh ... https://blog.51cto.com How to set ReFrames in ffmpeg - VideoHelp Forum
ffmpeg -i input.h264 -s 1280x720 -filter:v yadif -pix_fmt yuv420p -vcodec ... so if you want mediainfo to say "ReFrames 2", add -refs 1 -x264opts ... https://forum.videohelp.com How to set ReFrames in ffmpeg? - Stack Overflow
2019年7月3日 — Set b_pyramid to 1. If set to 2, x264 will force minimum refs to 4. https://stackoverflow.com x264 FFmpeg Options Guide - Linux Encoding - Google Sites
--ref <integer> (x264) -refs <integer> (FFmpeg) One of H.264's most useful features is the abillity to reference frames other than the one immediately prior to the ... https://sites.google.com [FFmpeg] H.264 編碼基本說明- Mobile01
如果要覆蓋ref 與bframes 的值為4 與5，可以使用"-refs 4 -bf 5" 或"-x264opts ref=4:bframes=6"。 覆蓋ref 值為4: ffmpeg -i input.m2ts -c:v libx264 -crf 18 -refs 4 -preset ... https://www.mobile01.com |