Conversão de Formatos Vídeos e extras

>> usando ffmpeg para converter arquivos de videos

$ ffmpeg -formats - para obter formatos suportados

mais usados:

• mpeg2video mjpeg indeo3 theora dvvideo mpge1video
• dvvideo DV video format
• mjpeg MJPEG video
• mpeg MPEG1 System format
• mpeg1video MPEG video
• mpeg2video MPEG2 video
• rawvideo raw video format
• theora Theora Video

sintaxes

• - i arquivo nome do arquivo de entrada
• - s tamanho tamanho do quadro (WxH, ex: 320x240)
• - vcodec codec vide video codec
• -sameq usar mesma qualidade do video original
• -acodec codec audio codec
• -an desabilite a conversar de áudio

mais informações em "man ffmpeg"

exemplos

um arquivo mov para o tamanho 320x240 com a mesma qualidade do original em no formato avi sem altera o som

$ ffmpeg -i acaodireta.mov -s 320x240 -sameq -vcodec mjpeg -an acaodireita-mjpeg.avi

arquivo (mp4,wmv,mov,mpg,ogg) para avi:

$ ffmpeg -i democratizacao.mpg -vcodec mjpeg democratizacao.avi

de avi para outros formatos

$ ffmpeg -i ocupacao.avi -vcodec dvvideo ocupacao.dv
$ ffmpeg -i ocupacao.avi -vcodec theora ocupacao.ogg
$ ffmpeg -i ocupacao.avi -vcodec mpeg2video ocupacao.mpg

projeto para dvd/vcd/pal-vcd/dv/svcd/ntsc-svcd

$ ffmpeg -i batemam.avi -target vcd batemam.mpg

ripando dvd com mencoder

com a saída no formato mpeg4

$ mencoder dvd:// -vf scale -zoom -xy 512 -o title2.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg4

com a sáida no formato mpeg2

$ mencoder dvd:// -vf scale -zoom -xy 512 -o title2.avi -oac copy -ovc lavc -lavcopts vcodec=mpeg2video

$ mencoder -oac mp3lame -ovc lavc -lavcopts vcodec=mpeg4:vhq -o orappa.avi orappa.mov
$ mencoder -ovc lavc -lavcopts vcodec=mpeg2video -oac mp3lame clipegil.avi -o gclipe.avi
$ mencoder -ovc lavc -lavcopts vcodec=mpeg2video -oac copy clipegil.avi -o gclipe.avi/
$ mencoder -ovc copy -oac copy clipegil.avi -o gclipe.avi

transcode - de mov para dv com

$ transcode -i eita.mov -y dvraw -o eita.dv
$ transcode -i eita.avi -y mov -o eita.mov

Android Conversions

Device	Screen Resolution	Command
Nexus One	800×480	Input Video Size > 800×480 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -s 800x480 -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4 Input Video Size <= 800×480 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4
Dream / G1	480×320	Input Video Size > 480×320 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -s 480x320 -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4 Input Video Size <= 480×320 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4
Droid	854×480	Input Video Size > 854×480 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -s 854x480 -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4 Input Video Size <= 854×480 ffmpeg -i INPUT -y -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre iPod640 -vpre slow -f mp4 -threads 0 OUTPUT.mp4
Magic / myTouch	480×320	same as G1
Eris / Desire	480×320	same as G1
Hero	480×320	same as G1
Cliq / DEXT	480×320	same as G1
Behold II	480×320	same as G1

Apple Format Conversions

Device	Screen Resolution	Command
iPhone / iPod Touch / iPod Nano / iPod Classic	320×480	ffmpeg -i INPUT-acodec aac -ac 2 -ab 160k -s 480x320 -vcodec libx264 -vpre slow -vpre iPod640 -b 1200k -f mp4 -threads 0 OUTPUT
iPhone 4 / iPod Touch 4	640×480	ffmpeg -i INPUT-acodec aac -ac 2 -ab 160k -s 640x480 -vcodec libx264 -vpre slow -vpre iPod640 -b 1200k -f mp4 -threads 0 OUTPUT
iPad	1024×768	ffmpeg -i INPUT-acodec aac -ac 2 -ab 160k -s 1024x768 -vcodec libx264 -vpre slow -vpre iPod640 -b 1200k -f mp4 -threads 0 OUTPUT
Apple Universal	1280×720	ffmpeg -i INPUT-acodec aac -ac 2 -ab 160k -s 1080x720 -vcodec libx264 -vpre slow -vpre iPod640 -b 1200k -f mp4 -threads 0 OUTPUT

PSP

Device	Screen Resolution	Command
PSP	320×480	ffmpeg -i INPUT -s 320x240 -b 512000 -ar 24000 -ab 64000 -f psp -r 29.97 OUTPUT

Output Formats

Format	Command
Theora	see http://github.com/8planes/mirovideoconverter/blob/master/MSWindows/Windows/ConversionFormats/TheoraVideoFormat.cs
MP4	ffmpeg -i INPUT -acodec aac -ac 2 -ab 160k -vcodec libx264 -vpre slow -f mp4 -crf 22 OUTPUT
MP3 (audio only)	ffmpeg -i INPUT' -f mp3 -y OUTPUT
WebM	ffmpeg_static -y -i INPUT -f webm -vcodec libvpx_vp8 -acodec libvorbis -ab 160000 -crf 22 OUTPUT

see TheoraTestMatrix

Current conversion Commands in Miro 3.5.1

Name	Executable	Extension	Parameters	Media Type
Android Devices	ffmpeg	mp4	-i {input} -y -acodec aac -ab 160k -s {ssize} -vcodec libx264 -vpre slow -vpre iPod640 -b 1500k -f mp4 -threads 0 {output}	video
Apple Devices	ffmpeg	mp4	-i {input} -acodec aac -ab 160k -s {ssize} -vcodec libx264 -vpre slow -vpre iPod640 -b 1200k -f mp4 -threads 0 {output}	video
Playstation Portable (PSP)	ffmpeg	mp4	-i {input} -s 320x240 -b 512000 -ar 24000 -ab 64000 -f psp -r 29.97 {output}	video
MP4	ffmpeg	mp4	-i {input} -acodec aac -ab 96k -vcodec libx264 -vpre slow -f mp4 -crf 22 {output}	video
MP3	ffmpeg	mp3	-i {input} -f mp3 -y {output}	audio
Ogg Theora	ffmpeg2theora	ogv	--videoquality 8 --audioquality 6 --frontend -o {output} {input}	video
Ogg Vorbis	ffmpeg	ogg	-i {input} -f ogg -vn -acodec vorbis -aq 60 {output}	audio