With media-libs/libtheora-1.0_beta2-r1 I tried to encode that file: http://video.tetesaclaques.tv/videos/014.les.martiens.flv in ogg/theora. I used the following command line: ffmpeg -i 014.les.martiens.flv -vcodec libtheora test.ogg Here is the errors from the output of media-video/mplayer-1.0_rc2_p24929-r2: Ogg stream 0 is of an unknown type Ogg stream 0 is of an unknown type LAVF_header: av_open_input_stream() failed Portage 2.1.3.19 (default-linux/amd64/2007.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.23-gentoo-r3 x86_64) ================================================================= System uname: 2.6.23-gentoo-r3 x86_64 Intel(R) Pentium(R) D CPU 3.40GHz Timestamp of tree: Mon, 14 Jan 2008 08:16:01 +0000 app-shells/bash: 3.2_p17-r1 dev-lang/python: 2.4.4-r6 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.10-r5 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.24 virtual/os-headers: 2.6.23-r2 ACCEPT_KEYWORDS="amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -fomit-frame-pointer -pipe -march=nocona" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb" CONFIG_PROTECT_MASK="/etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O2 -fomit-frame-pointer -pipe -march=nocona" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ ftp://mirror.ovh.net/gentoo-distfiles/ http://ftp.club-internet.fr/pub/mirrors/gentoo http://mirror.ovh.net/gentoo-distfiles/" LANG="fr_FR.UTF-8" LINGUAS="fr" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X aac alsa amd64 apache2 audiofile bash-completion bitmap-fonts bzip2 cli cracklib crypt curl dri encode fftw flac gdbm gnutls gtk iconv idn ipv6 isdnlog jbig jpeg jpeg2k libsamplerate midi mikmod mmx mp3 mudflap ncurses nls no-old-linux nptl nptlonly ogg pam pcre perl png pppd python readline reflection session spell spl sse sse2 ssl svg symlink threads tiff truetype truetype-fonts type1-fonts unicode vim-syntax vorbis xinerama xml xorg xv xvid zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="fr" USERLAND="GNU" VIDEO_CARDS="nv none" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
Transcoding does work from .flv to avi/theora.
emerge -pv ffmpeg output, please.
media-video/ffmpeg-0.4.9_p20070616-r2 USE="X aac amr encode ipv6 mmx network ogg sdl theora threads truetype vorbis xvid zlib -a52 (-altivec) -debug -doc -ieee1394 -imlib -oss -test -v4l -x264"
media-video/ffmpeg-0.4.9_p20080326 fixes the pb. I can now transcode very easily with: ffmpeg -i 014.les.martiens.flv test.ogg
