[Cin] our ffv1.mkv profile
Terje J. Hanssen
terjejhanssen at gmail.com
Sun Dec 26 22:48:00 CET 2021
Den 26.12.2021 21:13, skrev Andrew Randrianasulu via Cin:
>
>
> On Sunday, December 26, 2021, Phyllis Smith via Cin
> <cin at lists.cinelerra-gg.org> wrote:
>
> for now it seems only ffv1.avi defaults to v.0 and mkv
> defaults to 3.4
>
> For now, how about if I just add a comment to ffv1.mkv about level
> numbers? That way the user will see this if they look and can
> decide for themselves. Otherwise if we make every possible
> setting available we will end up with millions of choices and then
> if we have new ones labeled _3, when level 4 comes along we would
> need even more as _4.
>
>
> ok, add comment please}
>
Ok, maybe I'm thinking aload quite "outside the box" here with my
questions * below:
I seems for me Cin-GG supports ffv1.mkv in two instances (did't find
other mentioned in the manual either):
1) File > Save as: ffv1.mkv (that is save current edited video from
Cin-GG)
and
2) File > Record
using Video compression according to
Settings > Preferences > Record
File format: FFMPEG mkv
Video wrench: Compression: ffv1.mkv or user_ffv1.mkv
* Could i.e the empty <Format box> here be used to input levels
and/or other user options?
Further down on this window
Video IN
Record driver: i.e Video4Linux
* Or possibly get BM Intensity/declink SDK card working/integrated
with ffmpeg/Cin-GG?
* Get the option to preserve/archive transcoded ffv1.mkv directly
to a storage device?
* And/or get the option to load /pipe (uncompressed) video files
recorded on one storage (SSD) device,
compress it with the right preset ffv1.mkv and save it to another
storage device.
>
>
> On Sat, Dec 25, 2021 at 9:29 PM Andrew Randrianasulu via Cin
> <cin at lists.cinelerra-gg.org> wrote:
>
>
>
> On Sunday, December 26, 2021, Terje J. Hanssen via Cin
> <cin at lists.cinelerra-gg.org> wrote:
>
>
>
> Den 25.12.2021 17:35, skrev Andrew Randrianasulu via Cin:
>
> seems to miss level=3 setting
>
> $ cat bin/ffmpeg/video/ffv1.avi
> avi ffv1
> $ cat bin/ffmpeg/video/ffv1.mkv
> matroska ffv1
> threads=8
> context=1
> slices=30
> $ cat bin/ffmpeg/video/ffv1.mov
> mov ffv1
> #coder=0
> context=1
> g=1
> level=3
> threads=16
> slices=16
> slicecrc=1
> #pass=2
> $
>
> not sure if we should modify our avi/mkv profikes or
> add new (may be with _v3 name) ones?
>
>
> Without own experience yet, I would ask if there any
> reason to not use the latest and more feature rich FFV1
> level=version 3? Backward compitibility, typical can v. 3
> uncompress v. 1 compressed archives?
>
> good question... I have older avplay (~2012) here and will test.
>
> for now it seems only ffv1.avi defaults to v.0 and mkv
> defaults to 3.4 due to crc protection per slice, i think
> (looked into ffmpeg encoder source)
>
> {filenames were just that I had in inputbox, not indicative of
> content}
>
>
> $ mediainfo ~/h265-p2.avi
> General
> Complete name : /data/data/com.termux/files/home/h265-p2.avi
> Format : AVI
> Format/Info : Audio Video Interleave
> File size : 8.82 MiB
> Duration : 3 s 720 ms
> Overall bit rate mode : Variable
> Overall bit rate : 19.9 Mb/s
> Writing application : Lavf58.76.100
>
> Video
> ID : 0
> Format : FFV1
> Format version : Version 0
> Codec ID : FFV1
> Duration : 3 s 720 ms
> Bit rate mode : Variable
> Bit rate : 19.9 Mb/s
> Width : 720 pixels
> Height : 576 pixels
> Display aspect ratio : 5:4
> Frame rate : 25.000 FPS
> Standard : PAL
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Compression mode : Lossless
> Bits/(Pixel*Frame) : 1.916
> Stream size : 8.81 MiB (100%)
> coder_type : Golomb Rice
>
>
> $ mediainfo ~/h265-p2.mkv
> General
> Unique ID : 3614689160526176147752985704114819283
> (0x2B829EF6988D4EEDCB446A8612210D3)
> Complete name : /data/data/com.termux/files/home/h265-p2.mkv
> Format : Matroska
> Format version : Version 4
> File size : 7.48 MiB
> Duration : 3 s 80 ms
> Overall bit rate mode : Variable
> Overall bit rate : 20.4 Mb/s
> Writing application : Lavf58.76.100
> Writing library : Lavf58.76.100
> ErrorDetectionType : Per level 1
>
> Video
> ID : 1
> Format : FFV1
> Format version : Version 3.4
> Codec ID : V_MS/VFW/FOURCC / FFV1
> Duration : 3 s 80 ms
> Bit rate mode : Variable
> Bit rate : 20.0 Mb/s
> Width : 720 pixels
> Height : 576 pixels
> Display aspect ratio : 5:4
> Frame rate mode : Constant
> Frame rate : 25.000 FPS
> Standard : PAL
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Progressive
> Compression mode : Lossless
> Bits/(Pixel*Frame) : 1.927
> Stream size : 7.34 MiB (98%)
> Default : Yes
> Forced : No
> Color range : Full
> Matrix coefficients : BT.470 System B/G
> coder_type : Golomb Rice
> MaxSlicesCount : 30
> ErrorDetectionType : Per slice
>
>
>
> I conclude that a couple of referense papers on the web
> say and use level 3 in their profile/presets:
>
> 1) Video into Matroska/FFV1
> https://avpres.net/FFmpeg/im_FFV1.html
> <https://avpres.net/FFmpeg/im_FFV1.html>
>
> We advise to use only the version 3 of FFV1 in production,
> because the version 1 is deprecated, the version 2 has
> never really existed, and the version 4 is currently under
> development.
>
>
> Transcode a video file using the FFV1 codec into the
> Matroska container for preservation purposes.
> Solution
>
> ffmpeg \
> -i input_file \
> -c:v ffv1 \
> -level 3 \
> -coder 1 \
> -context 1 \
> -g 1 \
> -slices 24 \
> -slicecrc 1 \
> -c:a copy \
> output_file.mkv
>
> 2) Presets for FFV1 and MKV: Choosing the right parameters
> for the job (ffv1_params.pdf)
> https://docs.google.com/viewer?url=https%3A%2F%2Fmediaarea.net%2FEvents%2F2019-12-05_NoTimeToWait4%2F03.%2520Peter%2520B.%2520-%2520Presets%2520for%2520FFV1%2520and%2520MKV%2C%2520Choosing%2520the%2520right%2520parameters%2520for%2520the%2520job%2Fffv1_params.pdf&pdf=true
> <https://docs.google.com/viewer?url=https%3A%2F%2Fmediaarea.net%2FEvents%2F2019-12-05_NoTimeToWait4%2F03.%2520Peter%2520B.%2520-%2520Presets%2520for%2520FFV1%2520and%2520MKV%2C%2520Choosing%2520the%2520right%2520parameters%2520for%2520the%2520job%2Fffv1_params.pdf&pdf=true>
>
> Level = FFV1 version
> page 9 (of 30)
>
> 0
> 1 (Default)
> 3 (Recommended)
>
>
> FFmpeg recipe (PAL)
> page 27 (of 30)
>
> ffmpeg -i VIDEO_IN \
> -c:v ffv1 -level 3 -coder 1 -context 0 -slices 24
> -slicecrc 1 \
> -color_primaries bt470bg \
> -color_trc bt709 \
> -colorspace bt470bg \
> -color_range mpeg \
> -map 0 \
> -top 1 \
> -c:a copy \
> -g 1 -pix_fmt + \
> VIDEO_OUT.mkv
>
>
>
>
>
>
>
>
>
>
>
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> <https://lists.cinelerra-gg.org/mailman/listinfo/cin>
>
> --
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