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See https://github.com/HandBrake/HandBrake/issues/833#issuecomment-333193971
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Add additional x264 encoder options dct-decimate=0 and fast-pskip=0 (same as no-dct-decimate=1 and no-fast-pskip=1).
In some special cases, reproduction of flat areas and subtle gradients may improve slightly. Generally speaking, any change should be visually imperceptible at these bit rates, but adding a few extra bits is always acceptable when encoding for production intermediate purposes. Negligible speed hit (1-2%) for the main Production presets.
On the contrary, these settings are worse than useless for Production Proxy presets, which are optimized for speed. 5% speed hit isn't worth the tradeoff for low resolution proxies that need to be generated quickly and won't be used for final export.
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software.
Production Max and Production Standard are high bit rate, short GOP (I/P), constant frame rate presets suitable for use as intermediate formats for video editing.
Production Proxy 1080p and Production Proxy 540p are high bit rate, Intra-only (I), constant frame rate presets suitable for use as low resolution proxy formats for video editing. The Proxy presets correspond to one-quarter (1/4) 2160p 4K Ultra HD and one-quarter (1/4) 1080p Full HD resolutions, respectively.
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Using Vimeo and YouTube compression guides for reference:
https://vimeo.com/help/compression
https://support.google.com/youtube/answer/1722171
Test videos visually inspected following recompression by these services.
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This adds a preset key AlignAVStart that enables this work-around. When
enabled, blank frames are inserted or frames are dropped to force
alignment of the initial timestamp of every audio and video stream.
Aligning the start times minimizes the impact of broken edit list
support in players.
Closes #763.
Squashed:
sync: improve alignment when passthru audio is present
presets: enable AlignAVStart for General and Gmail presets
LinGui: Improve AlignAVStart tooltip
sync: avoid inserting a black frame < nominal frame duration
sync: fix start alignment when doing p-to-p encoding
sync: add comments
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I forgot to run rebuild script for the presets list
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Closes #525.
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Was supposed to be 640 when converting a non-AC3 source track.
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Longer durations, better resolutions.
Gmail Large 3 Minutes 720p30: Up to 3 minutes of 720p video in 25 MB or less.
Gmail Medium 5 Minutes 480p30: Up to 5 minutes of 480p video in 25 MB or less.
Gmail Small 10 Minutes 288p30: Up to 10 minutes of 288p video in 25 MB or less.
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Gmail Large 1080p30: Up to 1 minute of 1080p video in 25 MB or less.
Gmail Medium 720p30: Up to 2 minutes of 720p video in 25 MB or less.
Gmail Small 360p30: Up to 5 minutes of 360p video in 25 MB or less.
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* Add new anamorphic mode "Automatic", delete "Strict"
Anamorphic mode automatic is added to support Bradley's new presets that
are designed to pick a PAR that maximizes storage resolution.
Strict is converted to Loose + mod == 2 + UsesPictureSettings == 2
when importing presets
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for Very Fast presets.
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