Each chunk will add a slight overhead, both in the form of a slightly higher decoding time and slightly larger files, but the difference is usually (close to) negligible. It the video plays fine without using chunks, don't bother to use chunks. If the bitrate is too high, you will have to render to a lower resolution, or, if playing HapQ, switch to Hap. The compression methods are fixed and leave no room for any adjustments. Sadly ffmpeg doesn’t yet support the HapQ Alpha format.As I have mentioned in previous posts, given a certain resolution and Hap flavour (Hap, HapQ or HapAlpha) there is no way to control the bitrate.Hap Alpha requires straight alpha (not pre-multipled).

You can also add the -chunks 4 option which will encode each frame into 4 chunks so the decoding work can be split across multiple threads, resulting in faster decoding as long as the disk can keep up.

ffmpeg -i input.mov -vcodec hap -format hap_q output-hap.mov.

ffmpeg -i input.mov -vcodec hap -format hap_alpha output-hap.mov.

ffmpeg -i input.mov -vcodec hap -format hap output-hap.mov.

In 2020 Jokyo introduced their fast and high quality Hap encoder with plugins for Adobe After Effects, Premiere Pro etc: FFMPEGĪlternatively you can use a recent build of FFMPEG with the following command-lines: Ideally a width with a multiple of 16 is best for performance (aligned copy). Width and height must be multiple of a 4 for Hap encoded videos in AVPro Video. Hap, Hap Alpha, HapQ, HapQ Alpha and HapR are supported.

Amount of frames to decoder before starting playback, less frames for less latency in seeking, more frames for less chance of buffer emptying too quickly.

Less threads for less latency in playback operations (seeking, playing etc), more threads for better performance.

Maximum number of threads to use for parallel frame decoding.

If your files are high bit-rate (above 4Gbps) then use this option otherwise the file will not load. On Windows some options are exposed for Hap and NotchLC decoding:Įnables our custom MOV parser to be used, which is useful for Hap and NotchLC codecs, as a Microsoft parser is not able to open very high bit-rate MOV files. We have created a fix for this which is activated by enabled 'Use Custom MOV Parser' in Platform Specific >Windows options. There is currently a bug in Windows that prevents MOV files with a bitrate of more than 4Gbps from playing.

Hap codec after effects 2020