[Cin] Fwd: [FFmpeg-devel] qsvenc.c & AV_CODEC_FLAG_INTERLACED_DCT
Andrew Randrianasulu
randrianasulu at gmail.com
Fri Nov 22 17:58:57 CET 2024
пт, 22 нояб. 2024 г., 19:55 Terje Hanssen <terjejhanssen at gmail.com>:
>
>
>
> On 11/22/24 18:41, Andrew Randrianasulu wrote:
>
> On Fri, Nov 22, 2024 at 2:52 PM Terje Hanssen <terjejhanssen at gmail.com> <terjejhanssen at gmail.com> wrote:
>
>
>
> On 11/22/24 08:45, Andrew Randrianasulu wrote:
>
>
>
> ---------- Forwarded message ---------
> От: Wang, Fei W <fei.w.wang-at-intel.com at ffmpeg.org> <fei.w.wang-at-intel.com at ffmpeg.org>
> Date: пт, 22 нояб. 2024 г., 09:10
> Subject: Re: [FFmpeg-devel] qsvenc.c & AV_CODEC_FLAG_INTERLACED_DCT
> To: ffmpeg-devel at ffmpeg.org <ffmpeg-devel at ffmpeg.org> <ffmpeg-devel at ffmpeg.org>
>
>
> On Thu, 2024-11-21 at 11:50 +0300, Andrew Randrianasulu wrote:
>
> Hello.
>
>
> Recently I teached cinelerra-gg to use qsv encoders in ffmpeg
> (libavcodec)
> and some test were working but some not.
>
> We nailed it down to top-field first material, like HDV files. bff
> files
> like consumer version of DV and progressive worked fine.
>
> I looked at source and ... I thought condition at
> http://git.ffmpeg.org/gitweb/ffmpeg.git/blob/HEAD:/libavcodec/qsvenc.c#l852
>
>
> must contain case for bff, but I tried this and it was reportedly not
> helping?
>
>
> We currently set flags = ildct+ilme on interlaced streams, I hope to
> avoid
> special-casing qsv encoders, but may be we have no other choice?
>
> I asked user (Terje) to add +ildct flag to his normal system ffmpeg
> line
> and it started to fail too:
> https://lists.cinelerra-gg.org/pipermail/cin/2024-November/009123.html
>
> AV1 doesn't support interlaced frame.
>
>
> We can dual check to transcode hdv to av1_qsv again, as I did with ffmpeg in this posthttps://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg08314.html
>
> My issue now currently on Kaby Lake is that I have no hdv.m2t file stored and could not find a download link with example hdv. Suggestion?
>
>
> https://archive.org/download/hdv01
>
>
> Thanks, I downloaded FX1_01.mpg, which even its wrong file extension is a
> 1080i50 HDV recorded on a predecessor of my own Sony FX7-E camcorder.)
>
> mediainfo FX1_01.mpg | egrep -i "scan|bit|format|FileExtension"
> Format : MPEG-TS
> Overall bit rate mode : Variable
> Overall bit rate : 26.1 Mb/s
> Maximum Overall bit rate : 33.0 Mb/s
> FileExtension_Invalid : ts m2t m2s m4t m4s tmf ts tp
> trp ty
> Format : MPEG Video
> Format version : Version 2
> Format profile : Main at High 1440
> Format settings : CustomMatrix / BVOP
> Format settings, BVOP : Yes
> Format settings, Matrix : Custom
> Format settings, GOP : M=3, N=12
> Format settings, picture structure : Frame
> Bit rate mode : Constant
> Bit rate : 24.5 Mb/s
> Maximum bit rate : 25.0 Mb/s
> Bit depth : 8 bits
> Scan type : Interlaced
> Scan order : Top Field First
> Bits/(Pixel*Frame) : 0.629
> Format : MPEG Audio
> Format version : Version 1
> Format profile : Layer 2
> Bit rate mode : Constant
> Bit rate : 384 kb/s
> Format : MPEG Video / MPEG Audio / /
>
>
> But unhappily, the HDV --> av1_qsv transcoding I previous did on
> i17-12700/DG2 WS
> https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg08314.html
>
> HDV --> av1_qsv -global_quality 25
> -----------------------------------
> ffmpeg -hide_banner -qsv_device /dev/dri/renderD128 -i hdv09_04.m2t
> -pix_fmt nv12 -c:v av1_qsv -global_quality 25
> hdv09_04_av1_qsv_format_nv12_gq25.mp4
>
> ffprobe -hide_banner hdv09_04_av1_qsv_format_nv12_gq25.mp4
> Stream #0:0[0x1](und): Video: av1 (libdav1d) (Main) (av01 / 0x31307661),
> yuv420p(tv, bt709, top coded first (swapped)), 1440x1080, 7902 kb/s, SAR
> 4:3 DAR 16:9, 24.99 fps, 25 tbr, 12800 tbn (default)
>
> is not possible on my legacy KBL i7-8550U Intel UHD Graphics 620
>
> [av1_qsv @ 0x5641dd0f5440] This version of runtime doesn't support AV1
> encoding
>
> as confirmed by these limited capabilites
>
> vainfo | grep -i enc
> libva info: VA-API version 1.22.0
> libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_22
> libva info: va_openDriver() returns 0
> VAProfileMPEG2Simple : VAEntrypointEncSlice
> VAProfileMPEG2Main : VAEntrypointEncSlice
> VAProfileH264Main : VAEntrypointEncSlice
> VAProfileH264Main : VAEntrypointEncSliceLP
> VAProfileH264High : VAEntrypointEncSlice
> VAProfileH264High : VAEntrypointEncSliceLP
> VAProfileJPEGBaseline : VAEntrypointEncPicture
> VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
> VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
> VAProfileVP8Version0_3 : VAEntrypointEncSlice
> VAProfileHEVCMain : VAEntrypointEncSlice
> VAProfileHEVCMain10 : VAEntrypointEncSlice
>
> By the way, neither this attempt claims about unsupported or wrong image
> structure format !?
>
may be it not even come to this line and abort earlier? (in compiled
languages functions can be executed out of order they appear in file)
>
> You may add deinterlace filter
> before encoder after apply this patch:https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=13372
>
> cmd:
> ffmpeg -hide_banner -qsv_device /dev/dri/renderD128 -
> hwaccel_output_format qsv -i input.mp4 -pix_fmt nv12 -vf
> vpp_qsv=deinterlace=advanced -c:v av1_qsv -f null -
>
> Thanks
> Fei
>
>
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