ムービーmp4変換
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AVCONVERT(1) General Commands Manual AVCONVERT(1)
NAME
avconvert – movie conversion tool
SYNOPSIS
avconvert [-hv] -s <source_media> -o <output_movie> -p <preset_name>
DESCRIPTION
avconvert is a tool that converts source media files to different file types for sharing on
the web or loading onto devices. The tool will not allow protected content to be converted.
Only one video and one audio track is preserved through the conversion, along with metadata
tracks. The tool will never resize the video higher than the source dimensions. If the
preset internal dimensions are larger than that of the source, the conversion will maintain
the source dimensions. The file extension provided for the output movie will determine the
output file type.
--source | -s file The source media file to be converted.
--output | -o file The output movie file to be created.
--preset | -p name Use the specified preset for file conversion. All presets encode
using AVC (H.264) encoding unless otherwise specified in the preset
name. Use --help to get the full list.
Preset640x480 A 480p Standard Definition
preset with H.264 video and
AAC audio.
Preset960x540 A 540p preset with H.264
video and AAC audio.
Preset1280x720 A 720p High Definition
preset with H.264 video and
AAC audio.
Preset1920x1080 A 1080p High Definition
preset with H.264 video and
AAC audio.
Preset3840x2160 A 2160p Ultra High
Definition preset with H.264
video and AAC audio.
PresetAppleM4A An audio-only preset with
AAC audio.
PresetAppleM4V480pSD A legacy 480p Standard
Definition preset with H.264
video and AAC audio suitable
for playing on Apple
devices.
PresetAppleM4V720pHD A legacy 720p High
Definition preset with H.264
video and AAC audio suitable
for playing on Apple
devices.
PresetAppleM4V1080pHD A legacy 1080p High
Definition preset with H.264
video and AAC audio suitable
for playing on Apple
PresetAppleM4VAppleTV A legacy preset with H.264
video and AAC audio suitable
for playing on older AppleTV
models.
PresetAppleM4VCellular A legacy, smaller than
Standard Definition, preset
with H.264 video and AAC
audio suitable for playing
on Apple devices when
streamed over a cellular
network.
PresetAppleM4ViPod A legacy Standard Definition
preset with H.264 video and
AAC audio suitable for
playing on an iPod.
PresetAppleM4VWiFi A legacy, smaller than
Standard Definition, preset
with H.264 video and AAC
audio suitable for playing
on Apple devices when
streamed over a WiFi
network.
PresetAppleProRes422LPCM A preset with Apple ProRes
422 video and LPCM audio.
PresetAppleProRes4444LPCM A preset with Apple ProRes
4444 video and LPCM audio.
PresetHEVC1920x1080 A 1080p High Definition
preset with HEVC video and
AAC audio.
PresetHEVC1920x1080WithAlpha A 1080p High Definition
preset with HEVC alpha video
and AAC audio. If a non-
alpha source is selected, an
error will occur.
PresetHEVC3840x2160 A 2160p Ultra High
Definition preset with HEVC
video and AAC audio.
PresetHEVC3840x2160WithAlpha A 2160p Ultra High
Definition preset with HEVC
alpha video and AAC audio.
If a non-alpha source is
selected, an error will
occur.
PresetHEVC7680x4320 An 8K preset with HEVC video
and AAC audio.
PresetHEVCHighestQuality A high quality preset with
HEVC video and AAC audio.
PresetHEVCHighestQualityWithAlpha A high quality preset with
PresetHEVCHighestQualityWithAlpha A high quality preset with
HEVC alpha video and AAC
audio. If a non-alpha
source is selected, an error
will occur.
PresetHighestQuality A high quality preset with
H.264 video and AAC audio.
PresetLowQuality A low quality, smaller than
Standard Definition, preset
with H.264 video and AAC
audio.
PresetMediumQuality A medium quality, smaller
than Standard Definition,
preset with H.264 video and
AAC audio.
PresetPassthrough A preset that passes through
the video and audio tracks,
without conversion.
OOPTIONS
--disableFastStart Disable fast-start movie creation. Reduces disk accesses if fast-
start is not required.
--disableMetadataFilter Disable the metadata filter. Use with caution. This will allow
privacy sensitive source metadata to be preserved in the output file.
This may include information such as the location of the video, time
when the video was recorded, video capture device information, etc.
If this option is not specified, the aforementioned source metadata
is not present in the output file.
--duration num Trim the output movie to num seconds (decimal allowed). Default is
end of file.
--help | -h Print command usage and list available preset names.
--multiPass Perform a higher quality multi-pass encode in the conversion.
--progress | -prog Display progress during the conversion (default with -v).
--replace Overwrite the output file, if it already exists.
--start num Skip the first num seconds (decimal allowed) of the source movie.
Default is beginning of file.
--verbose | -v Print additional information about the conversion.
EXAMPLES
Convert the source movie from 4k HEVC to 720p AVC using the 1280x720 encoding preset:
avconvert --source 4k_hevc_movie.mov --output 720p_avc_movie.mov --preset Preset1280x720
Convert the source movie from 4k AVC to 4K HEVC using the HEVCHighestQuality encoding preset:
avconvert -s 4k_avc_movie.mov -o 4k_hevc_movie.mov -p PresetHEVCHighestQuality
Skip the first 3.5 seconds of the source movie and only convert the next 30 seconds:
avconvert --source source_movie.mov --output trimmed_movie.mov -p PresetMediumQuality
--start 3.5 --duration 30
Convert the source movie from a QuickTime movie file to an MPEG-4 file:
avconvert -s source_movie.mov -o output_movie.mp4 -p PresetLowQuality
HISTORY
avconvert command first appeared in Mac OS X 10.7.
64-bit implementation introduced in Mac OS X 10.15.
macOS October 8, 2021 macOS
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