FFMPEG - Apple 720p30 Surround MP4 H.264 AAC stereo; Dolby Digital
Dec 10 2020
Chciałbym ustawienia FFmpeg cli, które będą pasować do tego (jest to ustawienie wstępne hamulca ręcznego)

Oto plik ustawień wstępnych, nie rozumiem, co by to było dla ffmpeg.
{
"AlignAVStart": false,
"AudioCopyMask": [
"copy:aac",
"copy:ac3",
"copy:dtshd",
"copy:dts",
"copy:mp3",
"copy:truehd",
"copy:flac",
"copy:eac3"
],
"AudioEncoderFallback": "ac3",
"AudioLanguageList": [],
"AudioList": [
{
"AudioBitrate": 160,
"AudioCompressionLevel": 0.0,
"AudioDitherMethod": null,
"AudioEncoder": "av_aac",
"AudioMixdown": "stereo",
"AudioNormalizeMixLevel": false,
"AudioSamplerate": "auto",
"AudioTrackQualityEnable": false,
"AudioTrackQuality": -1.0,
"AudioTrackGainSlider": 0.0,
"AudioTrackDRCSlider": 0.0
},
{
"AudioBitrate": 640,
"AudioCompressionLevel": 0.0,
"AudioDitherMethod": null,
"AudioEncoder": "copy:ac3",
"AudioMixdown": "none",
"AudioNormalizeMixLevel": false,
"AudioSamplerate": "auto",
"AudioTrackQualityEnable": false,
"AudioTrackQuality": -1.0,
"AudioTrackGainSlider": 0.0,
"AudioTrackDRCSlider": 0.0
}
],
"AudioSecondaryEncoderMode": true,
"AudioTrackSelectionBehavior": "first",
"ChapterMarkers": true,
"ChildrenArray": [],
"Default": false,
"FileFormat": "av_mp4",
"Folder": false,
"FolderOpen": false,
"Mp4HttpOptimize": false,
"Mp4iPodCompatible": false,
"PictureAutoCrop": true,
"PictureBottomCrop": 0,
"PictureLeftCrop": 0,
"PictureRightCrop": 0,
"PictureTopCrop": 0,
"PictureDARWidth": 0,
"PictureDeblockPreset": "off",
"PictureDeblockTune": "medium",
"PictureDeblockCustom": "strength=strong:thresh=20:blocksize=8",
"PictureDeinterlaceFilter": "decomb",
"PictureCombDetectPreset": "default",
"PictureCombDetectCustom": "",
"PictureDeinterlacePreset": "default",
"PictureDeinterlaceCustom": "",
"PictureDenoiseCustom": "",
"PictureDenoiseFilter": "off",
"PictureDenoisePreset": "light",
"PictureDenoiseTune": "none",
"PictureSharpenCustom": "",
"PictureSharpenFilter": "off",
"PictureSharpenPreset": "medium",
"PictureSharpenTune": "none",
"PictureDetelecine": "off",
"PictureDetelecineCustom": "",
"PictureItuPAR": false,
"PictureKeepRatio": true,
"PictureLooseCrop": false,
"PictureModulus": 2,
"PicturePAR": "auto",
"PicturePARWidth": 0,
"PicturePARHeight": 0,
"PictureRotate": null,
"PictureWidth": 1280,
"PictureHeight": 720,
"PictureForceHeight": 0,
"PictureForceWidth": 0,
"PresetDescription": "H.264 video (up to 720p30), AAC stereo audio, and Dolby Digital (AC-3) surround audio, in an MP4 container. Compatible with Apple iPhone 4, 4S, and later; iPod touch 4th, 5th Generation and later; iPad 1st Generation, iPad 2, and later; Apple TV 2nd Generation and later.",
"PresetName": "Apple 720p30 Surround",
"Type": 0,
"UsesPictureFilters": true,
"UsesPictureSettings": 1,
"SubtitleAddCC": false,
"SubtitleAddForeignAudioSearch": true,
"SubtitleAddForeignAudioSubtitle": false,
"SubtitleBurnBehavior": "foreign",
"SubtitleBurnBDSub": false,
"SubtitleBurnDVDSub": false,
"SubtitleLanguageList": [],
"SubtitleTrackSelectionBehavior": "none",
"VideoAvgBitrate": 3000,
"VideoColorMatrixCode": 0,
"VideoEncoder": "x264",
"VideoFramerate": "30",
"VideoFramerateMode": "pfr",
"VideoGrayScale": false,
"VideoScaler": "swscale",
"VideoPreset": "medium",
"VideoTune": "",
"VideoProfile": "high",
"VideoLevel": "3.1",
"VideoOptionExtra": "",
"VideoQualityType": 2,
"VideoQualitySlider": 21.0,
"VideoQSVDecode": false,
"VideoQSVAsyncDepth": 4,
"VideoTwoPass": true,
"VideoTurboTwoPass": false,
"x264Option": null,
"x264UseAdvancedOptions": false
},
Odpowiedzi
1 llogan Dec 11 2020 at 00:39
ffmpeg -i input.mp4 -c:v libx264 -crf 21 -preset medium -vf scale=-2:720 -r 30 -c:a aac -ac 2 output.mp4
opcja | co to robi |
---|---|
-c:v libx264 |
wybiera koder wideo libx264 do wyprowadzania wideo H.264 |
-crf 21 |
wybiera jakość |
-preset medium |
wybiera preset kodowania x264 |
-vf scale=-2:720 |
używa filtru skalowania, aby wideo było wysokie na 720px, szerokość autoskalowania dopasowana do proporcji |
-r 30 |
ustawia liczbę klatek na sekundę na 30 fps |
-c:a aac |
wybiera koder audio aac do wyprowadzania dźwięku AAC |
-ac 2 |
wyjście dźwięku stereo |
Więcej informacji:
- FFmpeg Wiki: H.264
- FFmpeg Wiki: AAC