Tvheadend

Since the 4.0 ffmpeg vaapi transcoding doesn't work anymore.
Is this log of any help?

Vaapi h264:

2018-09-12 09:55:34.354 transcode: 0006: 01:H264: > Using profile webtv-vaapi
2018-09-12 09:55:34.354 transcode: 0006: 02:MPEG2AUDIO: > Copy
2018-09-12 09:55:34.899 transcode: no AVHWAccel for the pixel format
2018-09-12 09:55:34.941 libav: AVCodecContext: mmco: unref short failure
2018-09-12 09:55:34.941 libav: AVCodecContext: mmco: unref short failure
2018-09-12 09:55:34.941 libav: AVCodecContext: number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
2018-09-12 09:55:34.945 transcode: 0006: 01:H264: [h264 => h264_vaapi]: opts: b=2048000,quality=1,pix_fmt=53,tvh_filter_deint=0,width=1920,height=1080,bf=3,tvh_require_meta=1,profile=100
2018-09-12 09:55:34.945 libav: AVCodecContext: Specified pixel format dxva2_vld is invalid or not supported

Vaapi h265:

2018-09-12 09:57:49.918 transcode: 0008: 01:H264: > Using profile webtv-hevc
2018-09-12 09:57:49.918 transcode: 0008: 02:MPEG2AUDIO: > Copy
2018-09-12 09:57:50.404 transcode: no AVHWAccel for the pixel format
2018-09-12 09:57:50.420 libav: AVCodecContext: mmco: unref short failure
2018-09-12 09:57:50.420 libav: AVCodecContext: mmco: unref short failure
2018-09-12 09:57:50.420 libav: AVCodecContext: number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
2018-09-12 09:57:50.433 transcode: 0008: 01:HEVC: [h264 => hevc_vaapi]: opts: b=2048000,bf=0,pix_fmt=46,tvh_filter_deint=0,width=1920,height=1080,tvh_require_meta=1
2018-09-12 09:57:50.435 transcode: 0008: 01:HEVC: [h264 => hevc_vaapi]: filters: source args: 'video_size=1920x1080:pix_fmt=yuv420p:time_base=1/50:pixel_aspect=1/1'
2018-09-12 09:57:50.435 transcode: 0008: 01:HEVC: [h264 => hevc_vaapi]: filters: filters: 'null'
2018-09-12 09:57:50.435 libav: TVHGraph: Impossible to convert between the formats supported by the filter 'in' and the filter 'auto_scaler_0'
2018-09-12 09:57:50.435 transcode: 0008: 01:HEVC: [h264 => hevc_vaapi]: filters: failed to config filter graph