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-lavfopts
2010-03-15 (月) 06:32:41更新
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FFmpeg libavformat muxers (-lavfopts) (also see -of lavf) †
format=<container_format>
muxするコンテナ形式の指定。デフォルトは拡張子から自動判定。
- mpg
- MPEG-1 systems and MPEG-2 PS
- asf
- Advanced Streaming Format
- avi
- Audio Video Interleave file
- wav
- Waveform Audio
- swf
- Macromedia Flash
- flv
- Macromedia Flash video files
- rm
- RealAudio and RealVideo
- au
- SUN AU format
- nut
- NUT open container format (experimental)
- mov
- QuickTime
- mp4
- MPEG-4 format
- dv
- Sony Digital Video container
FFmpeg libavformat muxers (-lavfopts) (also see -of lavf) †
MEncoder dev-CVS-060418-00:29-4.0.1 (C) 2000-2006 MPlayer Team
- delay
- FIXME: Document this.
- format=<container_format>
- Override which container format to mux into (default: autodetect from output file extension).
- mpg
- MPEG-1 systems and MPEG-2 PS
- asf
- Advanced Streaming Format
- avi
- Audio Video Interleave file
- wav
- Waveform Audio
- swf
- Macromedia Flash
- flv
- Macromedia Flash video files
- rm
- RealAudio and RealVideo
- au
- SUN AU format
- nut
- NUT open container format (experimental)
- mov
- QuickTime
- mp4
- MPEG-4 format
- dv
- Sony Digital Video container
- i_certify_that_my_video_stream_does_not_use_b_frames
- FIXME: Document this.
- muxrate
- FIXME: Document this.
- packetsize
- FIXME: Document this.
- preload
- FIXME: Document this.
参考 †
2006年02月05日の実験（Mac）では、-of lavf -lavfopts format=mp4 -o ${INFILE}.mp4は動かない。
１）B付き設定 †
エンコード中に以下の警告が出て止まる。
** MUXER_LAVF *****************************************************************
If you wish to use libavformat muxing, you must ensure that your video stream
does not contain B frames (out of order decoding) and specify:
-lavfopts i_certify_that_my_video_stream_does_not_use_b_frames
on the command line.
REMEMBER: MEncoder's libavformat muxing is presently broken and will generate
INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
will play these INCORRECT files as if nothing were wrong!
*******************************************************************************
Cannot initialize muxer.
２）B抜き設定 †
では、-x264encoptsをbframe=0に、さらに
-lavfopts i_certify_that_my_video_stream_does_not_use_b_frames
を指定すると警告は以下のように切り替わり、エンコード完了。
** MUXER_LAVF *****************************************************************
You have certified that your video stream does not contain B frames.
REMEMBER: MEncoder's libavformat muxing is presently broken and will generate
INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
will play these INCORRECT files as if nothing were wrong!
*******************************************************************************
OK, exit
いいんだね？じゃ行くよ。って感じで通常のエンコードが走り出す。以前はこんな警告は出さず、単におかしなMP4を吐くだけだった。
