[Cin] Fwd: [FFmpeg-devel] qsvenc.c & AV_CODEC_FLAG_INTERLACED_DCT
Terje Hanssen
terjejhanssen at gmail.com
Fri Nov 22 17:55:03 CET 2024
On 11/22/24 18:41, Andrew Randrianasulu wrote:
> On Fri, Nov 22, 2024 at 2:52 PM Terje Hanssen<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>
>> 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>
>>
>>
>> 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 !?
>> 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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