ffmpeg:conversions:convert_h264_to_av1:libaom:constant_quality
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| ffmpeg:conversions:convert_h264_to_av1:libaom:constant_quality [2023/06/13 22:14] – peter | ffmpeg:conversions:convert_h264_to_av1:libaom:constant_quality [2023/06/14 07:04] (current) – peter | ||
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| ====== ffmpeg - Conversions - Convert H264 to AV1 - libaom - Constant Quality ====== | ====== ffmpeg - Conversions - Convert H264 to AV1 - libaom - Constant Quality ====== | ||
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| + | **libaom-av1** has a constant quality (CQ) mode (like CRF in x264 and x265) which will ensure that every frame gets the number of bits it deserves to achieve a certain (perceptual) quality level, rather than encoding each frame to meet a bit rate target. | ||
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| + | * This results in better overall quality. | ||
| + | * If you do not need to achieve a fixed target file size, this should be your method of choice. | ||
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| + | ---- | ||
| <code bash> | <code bash> | ||
| Line 9: | Line 16: | ||
| <code bash> | <code bash> | ||
| ... | ... | ||
| - | real 4m58.899s | + | real 260m18.018s |
| - | user 29m38.833s | + | user 1514m33.124s |
| - | sys 0m18.062s | + | sys 0m43.892s |
| </ | </ | ||
| Line 18: | Line 25: | ||
| * Input test size: 75.5M | * Input test size: 75.5M | ||
| - | * Output test size: | + | * Output test size: |
| </ | </ | ||
ffmpeg/conversions/convert_h264_to_av1/libaom/constant_quality.1686694448.txt.gz · Last modified: 2023/06/13 22:14 by peter