These are a few quick easy ffmpeg command lines that can be used to make oft-used video formats. I use them a lot so I wrote them down in a txt file but I converted it to markdown to upload here and access on all my pcs.
Feel free to use 'em. I've gathered them through superuser posts, wiki trawls, and personal experience.
-movflags faststartto make mp4 files have their headers at the beginning of the file, allowing them to be streamed (i.e. played even if only part of the file is downloaded).
- mp4 container supports mp3 files, so if
libfdk_aacisnt available (it's the only good aac enc) use
- For mp4 files, use
-preset Xto use mp4 enc presets, like slow or superfast. (veryfast or fast is ok)
c:vrefers to the video codec used (codec: video). Likewise,
c:ais audio. If you're using
-mapor something, this can be extended (
-c:a:0: codec: audio: stream 0)