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18th March 2021, 01:33 | #41 | Link | |
Neiromaster
Join Date: Sep 2006
Location: St. Petersburg, Russia
Posts: 68
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Quote:
Several new inventions have been added It does not currently support B frames. But this is planned to be added in the near future. If you compare it in zerrolatensy mode, then it is better than 264, close to 265 and better AV1 in realtime modes. Similar in level to VP9 with B frames, but has a number of unique things. And yes, this is a realtime codec that plays in a different area than AV1 |
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18th March 2021, 06:52 | #42 | Link |
Neiromaster
Join Date: Sep 2006
Location: St. Petersburg, Russia
Posts: 68
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About x264 and SIF
Park Joy at 8 Mbit. https://disk.yandex.ru/d/9_oLybuBktSSVQ Encoding String ConsoleEnc.exe "park_joy_1080p.y4m" --viz_dist=64 -o park_joy_1920x1080_test.avi x264 Veryslow Zerolatency crf 30 https://disk.yandex.ru/i/5u3ZJRFI-P5Ubw You can see everything yourself |
7th April 2021, 21:09 | #43 | Link |
Registered User
Join Date: May 2014
Posts: 292
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Hello!
v2.05.0 Encoding is completed without starting the second pass. C:\>ffmpeg -i z:\space_6s.mkv -f yuv4mpegpipe - | sif1_enc.exe --avi_outp --comp_mode=vbr_all_p --vbr_stat_f=z:\sif_stat.sta --out_bitrt=1200 -o z:\test.avi - ---- Are there any plans to make friends your decoder with the MPC-BE player?
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Win10x64, Xeon E5450, GTX 750 2GB, DDR3 8GB. Last edited by Gravitator; 7th April 2021 at 21:14. |
9th April 2021, 06:27 | #44 | Link |
Neiromaster
Join Date: Sep 2006
Location: St. Petersburg, Russia
Posts: 68
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An interface that uses standard threads does not allow you to rewind the thread to the beginning of the file. Therefore, when you use it, you cannot specify multiple passes with a single key.
Use multiple program launches C:\>ffmpeg -i z:\space_6s.mkv -f yuv4mpegpipe - | sif1_enc.exe --avi_outp --comp_mode=vbr_1_p --first_pass_mode=medium --vbr_stat_f=z:\sif_stat.sta --viz_dist=45 -o z:\test.avi C:\>ffmpeg -i z:\space_6s.mkv -f yuv4mpegpipe - | sif1_enc.exe --avi_outp --comp_mode=vbr_2_p --first_pass_mode=medium --vbr_stat_f=z:\sif_stat.sta --out_bitrt=1200 -o z:\test.avi Setting the VD value on the first pass affects the quality obtained on the second pass. The DirectShow decoder uses a 10 bit p010 format, which causes a number of problems with programs that do not understand it. Some problems with this were fixed and the DirectShow decoder was updated without increasing the version number. On the other hand, native support for decoding the format in FFMPEG, VLC is needed. To do this, need to open the decoder code under the GPL or BSD license. I am not the sole owner of SIF Codec LLC and such a solution requires coordination of different interests. This is a goal in the near future. |
11th May 2021, 00:50 | #46 | Link |
Moderator
Join Date: Jan 2006
Location: Portland, OR
Posts: 4,770
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For videoconferencing, B-frames aren't used. So a codec doesn't need them to be interesting or valuable.
I can see a future codec combining generalized B-frames with off-screen references into something that doesn't really have B-frames per se, with everything only forward-referenced... |
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