这些也是全局选项,但是功能上不是很常用,可以实现一些高级功能。
Advanced global options:
-cpuflags flags force specific cpu flags
-hide_banner hide_banner do not show program banner
-copy_unknown Copy unknown stream types
-benchmark add timings for benchmarking
-benchmark_all add timings for each task
-progress url write program-readable progress information
-stdin enable or disable interaction on standard input
-timelimit limit set max runtime in seconds in CPU user time
-dump dump each input packet
-hex when dumping packets, also dump the payload
-vsync video sync method
-frame_drop_threshold frame drop threshold
-async audio sync method
-adrift_threshold threshold audio drift threshold
-copyts copy timestamps
-start_at_zero shift input timestamps to start at 0 when using copyts
-copytb mode copy input stream time base when stream copying
-dts_delta_threshold threshold timestamp discontinuity delta threshold
-dts_error_threshold threshold timestamp error delta threshold
-xerror error exit on error
-abort_on flags abort on the specified condition flags
-filter_complex graph_description create a complex filtergraph
-lavfi graph_description create a complex filtergraph
-filter_complex_script filename read complex filtergraph description from a file
-debug_ts print timestamp debugging info
-intra deprecated use -g 1
-sameq Removed
-same_quant Removed
-deinterlace this option is deprecated, use the yadif filter instead
-psnr calculate PSNR of compressed frames
-vstats dump video coding statistics to file
-vstats_file file dump video coding statistics to file
-vstats_version Version of the vstats format to use.
-qphist show QP histogram
-vc channel deprecated, use -channel
-tvstd standard deprecated, use -standard
-isync this option is deprecated and does nothing
-sdp_file file specify a file in which to print sdp information
-qsv_device device set QSV hardware device (DirectX adapter index, DRM path or X11 display name)
-init_hw_device args initialise hardware device
-filter_hw_device device set hardware device used when filtering