Changes between Version 22 and Version 23 of DenoiseExamples
- Timestamp:
- Jun 9, 2024, 6:00:51 PM (2 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
DenoiseExamples
v22 v23 98 98 === Benchmarking the relative performance of denoise filters #Benchmarking 99 99 100 The performance of denoise filters varies depending on a number of factors, including algorithm, patch size, number of planes being processed, hardware etc. A user can measure and compare the relative performance of a denoise filter and the selected options using the [https://ffmpeg.org/ffmpeg-filters.html#latency_002c-alatency latency] benchmarking filter.100 The performance of denoise filters varies depending on a number of factors, including algorithm, patch size, number of planes being processed, hardware etc. A user can measure and compare the relative performance of a denoise filter and the selected options using the [https://ffmpeg.org/ffmpeg-filters.html#latency_002c-alatency ͏"latency"] benchmarking filter. 101 101 102 102 For example, here is a comparison of the relative performance of the `hqdn3d` and the `nlmeans` filters across 1000 video frames. These comparisons and values are not recommendations, but are to demonstrate how algorithm and options selection can have a major impact on performance. … … 255 255 }}} 256 256 257 Note: At the time of writing (FFmpeg 7.0.1), the command-line interface help suggests that all options default to 0. The Official FFmpeg online documentation suggests that the default value of luma_spacial is `4.0` and all other default values are solved-for. The contradiction in documentation is noted. 257 Note:\\ 258 ͏ At the time of writing (FFmpeg 7.0.1), the command-line interface help suggests that all options default to 0. The Official FFmpeg online documentation suggests that the default value of luma_spacial is `4.0` and all other default values are solved-for. The contradiction in documentation is noted. 258 259 259 260 Official FFmpeg online documentation is available at https://ffmpeg.org/ffmpeg-filters.html#hqdn3d … … 356 357 Official FFmpeg online documentation is available at https://ffmpeg.org/ffmpeg-filters.html#vaguedenoiser 357 358 358 == Codec-specific denoisers 359 360 It is noted that some encoders include denoise functions as private codec options. 359 == Codec-specific denoisers #Codec-specific 360 361 ͏ It is noted that some encoders include denoise functions as private codec options.\\ 362 ͏ Such denoisers tend to be typical ones simulatable with FFmpeg's. 363 361 364 For example, the external x264 encoder supports the `--nr` option, where a user may specify a value in the range of {0...65536}, with the default being 0 (disabled). 362 365 … … 367 370 }}} 368 371 369 FFmpeg's range of denoise filters have the advantage of being codec- agnostic,can be evaluated independent of a transcode and offer a wider selection of algorithms.372 FFmpeg's range of denoise filters have the advantage of being codec-independent: can be evaluated independent of a transcode and offer a wider selection of algorithms.
