[Cin] Fwd: [FFmpeg-devel] qsvenc.c & AV_CODEC_FLAG_INTERLACED_DCT
Terje Hanssen
terjejhanssen at gmail.com
Fri Nov 22 18:37:19 CET 2024
On 11/22/24 18:12, Andrew Randrianasulu wrote:
>
>
> пт, 22 нояб. 2024 г., 20:07 Terje Hanssen <terjejhanssen at gmail.com>:
>
>
>
>
> On 11/22/24 17:58, Andrew Randrianasulu wrote:
>>
>>
>> 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> <mailto: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> <mailto: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> <mailto: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 post
>>>> https://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)
>
> HDV --> av1_qsv transcoded as referenced above on the newer
> i17-12700/DG2
>
>
> ??
>
> you mean why default ffmpeg does not trip over this line?
>
> it silently ignores interlace and makes something flagged as
> interlaced but actually not?
We can have a closer look at the av1_qsv output, possibly with loglevel
verbose or debug on that WS, when I'm back again. I don't know what
ffmpeg really does here, but as far it is accelerated (fps=561 for
cfhd.mkv), viewable and playable, it will be good?
>
>
>
>
>
>>
>>
>>
>>
>>>> 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
>>>>
>>>>> _______________________________________________
>>>>> ffmpeg-devel mailing list
>>>>> ffmpeg-devel at ffmpeg.org
>>>>> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>>>>
>>>>> To unsubscribe, visit link above, or email
>>>>> ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
>>>> _______________________________________________
>>>> ffmpeg-devel mailing list
>>>> ffmpeg-devel at ffmpeg.org
>>>> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>>>
>>>> To unsubscribe, visit link above, or email
>>>> ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
>>>>
>>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.cinelerra-gg.org/pipermail/cin/attachments/20241122/d17da9a3/attachment-0001.htm>
More information about the Cin
mailing list