it:nastroje:ffmpeg
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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it:nastroje:ffmpeg [2019/01/25 13:31] matt |
it:nastroje:ffmpeg [2024/04/22 16:42] (current) matt [Vystřihnutí části] |
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| ==== Vypsaní informací o video souboru ==== | ==== Vypsaní informací o video souboru ==== | ||
| - | <code>ffmpeg -hide_banner -i input.mkv </code> | + | <code>ffprobe -v error -show_format -show_streams input.mp4</code> |
| + | <code>ffmpeg -hide_banner -i input.mkv</code> | ||
| + | Informace o video kodeku | ||
| + | <code>ffprobe -v error -select_streams v -show_entries stream=codec_name,codec_type,codec_long_name,codec_tag_string -of default=noprint_wrappers=1 file.avi</code> | ||
| ==== Konverze na h.265 ==== | ==== Konverze na h.265 ==== | ||
| - | <code>ffmpeg -y -i input.avi -c:v libx265 -preset slow -crf 16 -x265-params pass=1 -an -f mp4 /dev/null && ffmpeg -i input.avi -c:v libx265 -preset slow -crf 16 -x265-params pass=2 -c:a copy -c:s copy output.mp4</code> | + | <code>#!/bin/bash -x |
| + | |||
| + | fromBR=`ffprobe -v error -show_entries format=bit_rate -of default=noprint_wrappers=1:nokey=1 "$1"` | ||
| + | toBR=`awk "BEGIN {print $fromBR*0.60}"` | ||
| + | maxBR=`awk "BEGIN {print $fromBR*1.0}"` | ||
| + | toFILE=`echo ${1%.*}` | ||
| + | CRF=23 | ||
| + | |||
| + | |||
| + | echo FROM:$fromBR | ||
| + | echo TO: $toBR | ||
| + | echo MAX: $maxBR | ||
| + | echo $CRF | ||
| + | |||
| + | |||
| + | # TWO WAY METHOD | ||
| + | ffmpeg -y -i "$1" -c:v libx265 -preset medium -b:v $toBR -maxrate $maxBR -x265-params pass=1 -an -f mp4 /dev/null | ||
| + | ffmpeg -i "$1" -c:v libx265 -preset medium -b:v $toBR -maxrate $maxBR -x265-params pass=2 -c:a copy -c:s copy "$toFILE.BR$toBR.h265.MIML.mkv" | ||
| + | |||
| + | |||
| + | #ONE WAY CRF METHOD | ||
| + | #ffmpeg -i "$1" -c:v libx265 -preset slow -crf $CRF -c:a copy -c:s copy "$toFILE.CRF$CRF.h265.MIML.mkv" | ||
| + | </code> | ||
| ==== Konverze na h.264 ==== | ==== Konverze na h.264 ==== | ||
| Line 17: | Line 42: | ||
| ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts | ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts | ||
| ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4</code> | ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4</code> | ||
| + | |||
| + | ==== Vystřihnutí části ==== | ||
| + | <code>ffmpeg -i video.mp4 -ss 00:01:00 -to 00:02:00 -c copy cut.mp4</code> | ||
| + | |||
| + | ==== Přidání titulků ==== | ||
| + | |||
| + | Konverze kódování souboru s titulku z CP1250 do UTF-8 | ||
| + | <code>iconv -f CP1250 -t UTF-8//TRANSLIT input.file -o out.file</code> | ||
| + | |||
| + | Vložení titulků do kontejneru videa MKV | ||
| + | <code> | ||
| + | ffmpeg -i IN.mkv -i IN.srt -map 0:v -map 0:a -map 1 -c:v copy -c:a copy -c:s srt -metadata:s:s:0 language=Czech output.mkv | ||
| + | </code> | ||
| + | |||
| + | Vložení titulků do kontejneru videa MP4 | ||
| + | <code> | ||
| + | ffmpeg -i IN.mkv -i IN.srt -map 0:v -map 0:a -map 1 -c:v copy -c:a copy -c:s mov_text -metadata:s:s:0 language=Czech output.mkv | ||
| + | </code> | ||
| + | |||
| + | ==== Vypálení titulků do obrazu ==== | ||
| + | |||
| + | <code>ffmpeg -i IN.mp4 -vf subtitles=SubIN.srt out.mp4</code> | ||
| + | |||
| + | ==== Rotování obrazu ==== | ||
| + | |||
| + | * 0 = 90° counter-clockwise and vertical flip (default) | ||
| + | * 1 = 90° clockwise | ||
| + | * 2 = 90° counter-clockwise | ||
| + | * 3 = 90° clockwise and vertical flip | ||
| + | |||
| + | |||
| + | <code>ffmpeg -i input.mp4 -vf "transpose=0" output_0.mp4</code> | ||
| + | |||
it/nastroje/ffmpeg.1548423092.txt.gz · Last modified: 2019/08/02 11:18 (external edit)
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