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Josh Holmer authored Nov 12, 2018 and Thomas Daede committed Nov 26, 2018

Detects the level of difference between the current frame and the
previous frame, and if the difference is above a preset threshold,
encodes the current frame as a keyframe.

Introduces a new CLI option, --max-keyint (-i), to set the maximum
interval between two keyframes. Reuses the existing --keyint (-I) option
as the minimum interval between two keyframes. Sets the default minimum
to be 12 frames. To disable scenechange detection, set the max and min
to be equal via the CLI.

Change the default key frame interval from 30 to 240

For the test set vc-360p-1
master_gop_size_30@2018-11-26T21:44:33.537Z -> master_gop_size_240@2018-11-26T19:54:21.900Z

    PSNR |  PSNR Cb |  PSNR Cr | PSNR HVS |     SSIM |  MS SSIM | CIEDE 2000
-24.0682 | -17.4493 | -17.5778 | -24.1882 | -24.5156 | -24.3186 |   -21.7343

Frank Bossen authored Nov 12, 2018 and Thomas Daede committed Nov 12, 2018

Fixes #722

Fixes #720

Josh Holmer authored Nov 08, 2018 and Thomas Daede committed Nov 09, 2018

This opens the path to finer control by the user over the encoding
options, and centralizes the speed preset logic in one location.

Closes #290

Adds a new `--verbose` flag to display frame-by-frame info similar to
the old behavior.

They are already called by the API.

Frame reordering should be applied when low_latency is false

Unbreak encoding without producing the reconstructed video.

* Add code to reorder frames during encoding

* Use BTreeMap instead of VecDequeue to hold input frames

* Implement sign bias in MV prediction

* Disable reuse of learned prob and change ref frame semantics

Use LAST2 instead of ALTREF when the second reference frame is also
in the past

Luca Barbato authored Sep 12, 2018 and Thomas Daede committed Sep 12, 2018

Store the frame_type in the packet and implement Display for it.

And use it in rav1e to output the same stats it did before.

* Modify plane data structure to allow for padded border

* Pad reconstructed frame

* Have ME consider motion vectors pointing outside frame boundary

* Remove clamping inside motion compensation loop

Clamping is now done outside the loop and relies on the frame
being padded.

* Reduce size of intermediate buffer in motion compensation

* Update encode/decode tests

Make the library code not depend to the y4m crate.