sábado, 28 de junho de 2008

Convertendo vídeos no linux baseado em distribuições debian, e baixando vídeos do youtube

Caso não tenha o ffmpeg instalado em seu computador digite na console do seu linux baseado em distribuições debian (Kurumin, ubuntu ...)

$ sudo apt-get install ffmpeg


Para ver os formatos que o ffmpeg pode converter basta dar o comando na shell:



$ ffmpeg -formats



O Resultado é:



FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg --enable-libgsm --enable-dc1394 --disable-debug --enable-shared --prefix=/usr
libavutil version: 1d.49.3.0
libavcodec version: 1d.51.38.0
libavformat version: 1d.51.10.0
built on Mar 12 2008 14:31:53, gcc: 4.2.3 (Ubuntu 4.2.3-2ubuntu4)
File formats:
E 3g2 3gp2 format
E 3gp 3gp format
D 4xm 4X Technologies format
D MTV MTV format
D RoQ Id RoQ format
D aac ADTS AAC
DE ac3 raw ac3
E adts ADTS AAC
DE aiff Audio IFF
DE alaw pcm A law format
DE amr 3gpp amr file format
DE asf asf format
E asf_stream asf format
DE au SUN AU Format
DE audio_device audio grab and output
DE avi avi format
D avs avs format
E crc crc testing format
D daud D-Cinema audio format
D dc1394 dc1394 A/V grab
D dsicin Delphine Software International CIN format
D dts raw dts
DE dv DV video format
D dv1394 dv1394 A/V grab
E dvd MPEG2 PS format (DVD VOB)
D ea Electronic Arts Multimedia Format
DE ffm ffm format
D film_cpk Sega FILM/CPK format
DE flac raw flac
D flic FLI/FLC/FLX animation format
DE flv flv format
E framecrc framecrc testing format
DE gif GIF Animation
DE gxf GXF format
DE h261 raw h261
DE h263 raw h263
DE h264 raw H264 video format
D idcin Id CIN format
DE image2 image2 sequence
DE image2pipe piped image2 sequence
D ingenient Ingenient MJPEG
D ipmovie Interplay MVE format
DE m4v raw MPEG4 video format
D matroska Matroska file format
DE mjpeg MJPEG video
D mm American Laser Games MM format
DE mmf mmf format
E mov mov format
D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG4/Motion JPEG 2000 format
E mp2 MPEG audio layer 2
DE mp3 MPEG audio layer 3
E mp4 mp4 format
D mpc musepack
DE mpeg MPEG1 System format
E mpeg1video MPEG video
E mpeg2video MPEG2 video
DE mpegts MPEG2 transport stream format
D mpegvideo MPEG video
E mpjpeg Mime multipart JPEG format
DE mulaw pcm mu law format
D mxf MXF format
D nsv NullSoft Video format
E null null video format
D nut nut format
D nuv NuppelVideo format
DE ogg Ogg format
E psp psp mp4 format
D psxstr Sony Playstation STR format
DE rawvideo raw video format
D redir Redirector format
DE rm rm format
E rtp RTP output format
D rtsp RTSP input format
DE s16be pcm signed 16 bit big endian format
DE s16le pcm signed 16 bit little endian format
DE s8 pcm signed 8 bit format
D sdp SDP
D shn raw shorten
D smk Smacker Video
D sol Sierra SOL Format
E svcd MPEG2 PS format (VOB)
DE swf Flash format
D tiertexseq Tiertex Limited SEQ format
D tta true-audio
DE u16be pcm unsigned 16 bit big endian format
DE u16le pcm unsigned 16 bit little endian format
DE u8 pcm unsigned 8 bit format
D vc1 raw vc1
E vcd MPEG1 System format (VCD)
D video4linux video grab
D video4linux2 video grab
D vmd Sierra VMD format
E vob MPEG2 PS format (VOB)
DE voc Creative Voice File format
DE wav wav format
D wc3movie Wing Commander III movie format
D wsaud Westwood Studios audio format
D wsvqa Westwood Studios VQA format
D wv WavPack
DE yuv4mpegpipe YUV4MPEG pipe format

Codecs:
D V 4xm
D V D 8bps
D V VMware video
D V D aasc
EA ac3
DEA adpcm_4xm
DEA adpcm_adx
DEA adpcm_ct
DEA adpcm_ea
DEA adpcm_ima_dk3
DEA adpcm_ima_dk4
DEA adpcm_ima_qt
DEA adpcm_ima_smjpeg
DEA adpcm_ima_wav
DEA adpcm_ima_ws
DEA adpcm_ms
DEA adpcm_sbpro_2
DEA adpcm_sbpro_3
DEA adpcm_sbpro_4
DEA adpcm_swf
DEA adpcm_xa
DEA adpcm_yamaha
D A alac
DEV D asv1
DEV D asv2
D V D avs
DEV bmp
D V D camstudio
D V D camtasia
D V D cavs
D V D cinepak
D V D cljr
D A cook
D V D cyuv
D A dca
D A dsicinaudio
D V D dsicinvideo
DES dvbsub
DES dvdsub
DEV D dvvideo
DEV D ffv1
DEVSD ffvhuff
DEA flac
DEV D flashsv
D V D flic
DEVSD flv
D V D fraps
DEA g726
DEV gif
DEA gsm
D A gsm_ms
DEV D h261
DEVSDT h263
D VSD h263i
EV h263p
D V DT h264
DEVSD huffyuv
D V D idcinvideo
D A imc
D V D indeo2
D V indeo3
D A interplay_dpcm
D V D interplayvideo
EV jpegls
D V kmvc
EV libtheora
EV ljpeg
D V D loco
D A mace3
D A mace6
D V D mdec
DEV D mjpeg
D V D mjpegb
D V D mmvideo
DEA mp2
D A mp3
D A mp3adu
D A mp3on4
D A mpc sv7
DEVSDT mpeg1video
DEVSDT mpeg2video
DEVSDT mpeg4
D VSDT mpegvideo
DEVSD msmpeg4
DEVSD msmpeg4v1
DEVSD msmpeg4v2
D V D msrle
D V D msvideo1
D V D mszh
D V D nuv
DEV pam
DEV pbm
DEA pcm_alaw
DEA pcm_mulaw
DEA pcm_s16be
DEA pcm_s16le
DEA pcm_s24be
DEA pcm_s24daud
DEA pcm_s24le
DEA pcm_s32be
DEA pcm_s32le
DEA pcm_s8
DEA pcm_u16be
DEA pcm_u16le
DEA pcm_u24be
DEA pcm_u24le
DEA pcm_u32be
DEA pcm_u32le
DEA pcm_u8
DEV pgm
DEV pgmyuv
DEV png
DEV ppm
D A qdm2
D V D qdraw
D V D qpeg
D V D qtrle
DEV rawvideo
D A real_144
D A real_288
D A roq_dpcm
D V D roqvideo
D V D rpza
DEV D rv10
DEV D rv20
D A shorten
D A smackaud
D V smackvid
D V D smc
DEV snow
D A sol_dpcm
DEA sonic
EA sonicls
D V D sp5x
DEV D svq1
D VSD svq3
D V targa
D V theora
D V D tiertexseqvideo
D V tiff
D V D truemotion1
D V D truemotion2
D A truespeech
D A tta
D V D ultimotion
D V vc1
D V D vcr1
D A vmdaudio
D V D vmdvideo
DEA vorbis
D V vp3
D V vp5
D V vp6
D V vp6f
D V D vqavideo
D A wavpack
DEA wmav1
DEA wmav2
DEVSD wmv1
DEVSD wmv2
D V wmv3
D V D wnv1
D A ws_snd1
D A xan_dpcm
D V D xan_wc3
D V D xl
DEV D zlib
DEV zmbv

Supported file protocols:
file: pipe: udp: rtp: tcp: http:
Frame size, frame rate abbreviations:
ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif
Motion estimation methods:
zero(fastest) full(slowest) log phods epzs(default) x1 hex umh iter

Note, the names of encoders and decoders dont always match, so there are
several cases where the above table shows encoder only or decoder only entries
even though both encoding and decoding are supported for example, the h263
decoder corresponds to the h263 and h263p encoders, for file formats its even
worse



Em outras palavras ele é capaz de converter qualquer formato desses abaixo para qualquer formato desses abaixo:






.3gp2
.3gp
.4xm
.MTV
.aac
.ac3
.adts
.aiff
.alaw
.amr
.asf
.asf_stream
.au
.audio_device
.avi
.avs
.crc
.daud
.dc1394
.dsicin
.dts
.dv
.dv1394
.dvd
.ea
.ffm
.film_cpk
.flac
.flic
.flv
.framecrc
.gif
.gxf
.h261
.h263
.h264
.idcin
.image2
.image2pipe
.ingenient
.ipmovie
.m4v
.matroska
.mjpeg
.mm
.mmf
.mov
.m4a
.3gp
.3g2
.mj2
.mp2
.mp3
.mp4
.mpc
.mpeg
.mpeg1video
.mpeg2video
.mpegts
.mpegvideo
.mpjpeg
.mulaw
.mxf
.nsv
.null
.nut
.nuv
.ogg
.psp
.psxstr
.rawvideo
.redir
.rm
.rtp
.rtsp
.s16be
.s16le
.s8
.sdp
.shn
.smk
.sol
.svcd
.swf
.tiertexseq
.tta
.u16be
.u16le
.u8
.vc1
.vcd
.video4linux
.video4linux2
.vmd
.vob
.voc
.wav
.wc3movie
.wsaud
.wsvqa
.wv
.yuv4mpegpipe

Codecs:
.4xm
.8bps
.VMware video
.aasc
.ac3
.adpcm_4xm
.adpcm_adx
.adpcm_ct
.adpcm_ea
.adpcm_ima_dk3
.adpcm_ima_dk4
.adpcm_ima_qt
.adpcm_ima_smjpeg
.adpcm_ima_wav
.adpcm_ima_ws
.adpcm_ms
.adpcm_sbpro_2
.adpcm_sbpro_3
.adpcm_sbpro_4
.adpcm_swf
.adpcm_xa
.adpcm_yamaha
.alac
.asv1
.asv2
.avs
.bmp
.camstudio
.camtasia
.cavs
.cinepak
.cljr
.cook
.cyuv
.dca
.dsicinaudio
.dsicinvideo
.dvbsub
.dvdsub
.dvvideo
.ffv1
.ffvhuff
.flac
.flashsv
.flic
.flv
.fraps
.g726
.gif
.gsm
.gsm_ms
.h261
.h263
.h263i
.h263p
.h264
.huffyuv
.idcinvideo
.imc
.indeo2
.indeo3
.interplay_dpcm
.interplayvideo
.jpegls
.kmvc
.libtheora
.ljpeg
.loco
.mace3
.mace6
.mdec
.mjpeg
.mjpegb
. mmvideo
.mp2
.mp3
.mp3adu
.mp3on4
. mpc sv7
.mpeg1video
.mpeg2video
.mpeg4
.mpegvideo
.msmpeg4
.msmpeg4v1
.msmpeg4v2
.msrle
.msvideo1
.mszh
.nuv
.pam
.pbm
.pcm_alaw
.pcm_mulaw
.pcm_s16be
.pcm_s16le
.pcm_s24be
.pcm_s24daud
.pcm_s24le
.pcm_s32be
.pcm_s32le
.pcm_s8
.pcm_u16be
.pcm_u16le
.pcm_u24be
.pcm_u24le
.pcm_u32be
.pcm_u32le
.pcm_u8
.pgm
.pgmyuv
.png
.ppm
.qdm2
.qdraw
.qpeg
.qtrle
.rawvideo
.real_144
.real_288
.roq_dpcm
.roqvideo
.rpza
.rv10
.rv20
.shorten
.smackaud
.smackvid
.smc
.snow
.sol_dpcm
.sonic
.sonicls
.sp5x
.svq1
.svq3
.targa
.theora
.tiertexseqvideo
.tiff
.truemotion1
.truemotion2
.truespeech
.tta
.ultimotion
.vc1
.vcr1
.vmdaudio
.vmdvideo
.vorbis
.vp3
.vp5
.vp6
.vp6f
.vqavideo
.wavpack
.wmav1
.wmav2
.wmv1
.wmv2
.wmv3
.wnv1
.ws_snd1
.xan_dpcm
.xan_wc3
.xl
.zlib
.zmbv





O Comando para converter Vídeos usando o ffmpeg é :



ffmpeg -i nome_do_arquivo_a_ser_convrtido.extensao_do_arquivo -ab 56 -ar 22050 -b 50 -s 320x240 -title Titulo\ do\ Video -comment Comentario\ Sobre\ o\ video nome_do_videoConvertido.extensaoDesejadaDoArquivoConvertido




Para baixar os vídeos do site do youtube você pode utilizar o programa youtube-dl, já para instalar o programa youtube-dl no seu computador basta basta dar o comando:
$ sudo apt-get install youtube-dl

Para baixar o vídeo do youtube basta você saber o url do vídeo (o endereço lá na barra de endereços, começa com: http://br.youtube.com/...) e
dar o comando:
$ youtube-dl -t url_do_youtube_de_seu_video_a_baixar

onde o -t vai dar o nome do título ao seu vídeo+alguns_caracteres_loucos

As opções dele são (comando youtube-dl -h):

Usage: youtube-dl [options] video_url

Options:
-h, --help print this help text and exit
-v, --version print program version and exit
-u USERNAME, --username=USERNAME
account username
-p PASSWORD, --password=PASSWORD
account password
-o FILE, --output=FILE
output video file name
-q, --quiet activates quiet mode
-s, --simulate do not download video
-t, --title use title in file name
-l, --literal use literal title in file name
-n, --netrc use .netrc authentication data
-g, --get-url print final video URL only
-2, --title-too used with -g, print title too

Por exemplo para baixar e converter o clipe da música the scientis do coldplay eu digitei na shell:

$ youtube-dl -t http://br.youtube.com/watch?v=V3Kd7IGPyeg


Retrieving video webpage... done.
Extracting video title... done.
Extracting URL "t" parameter... done.
Requesting video file... done.
Video data found at http://v23.cache.googlevideo.com/get_video?video_id=V3Kd7IGPyeg&origin=mia-v9.mia.youtube.com&signature=8D276E61B6768A37B575ECBFE1256192C8A841DE.70A5E75A202DBC3A1748773BF40CF9CAFA9B20A0&ip=189.58.113.244&ipbits=16&expire=1214700090&key=yt1&sver=2
Retrieving video data: 100.0% ( 9.22M of 9.22M) at 82.35k/s ETA 00:00 done.
Video data saved to coldplay_the_scientist-V3Kd7IGPyeg.flv



$ ffmpeg -i coldplay_the_scientist-V3Kd7IGPyeg.flv -ab 56 -ar 22050 -b 50 -s 320x240 -title The\ Scientist\ Coldplay coldplay_the_scientist.avi

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