Gives a notable quality boost by allowing x264 to choose between 8×8 and 4×4 frequency transform size. Required for i8x8 partitions. Speed cost for this option is near-zero both for encoding and decoding; the only reason to disable it is when one needs support on a device not compatibl...
-cplxblur <float> E..V... Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (default -1) -partitions <string> E..V... A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all -direct-pred <int> E....
-t duration record or transcode "duration" seconds of audio/video -to time_stop record or transcode stop time -fs limit_size set the limit file size in bytes -ss time_off set the start time offset -sseof time_off set the start time offset relative to EOF -seek_timestamp enable/disable...
Reduce fluctuations in QP (before curve compression) [20.0] –qblur (x264) -qblur (FFmpeg) Reduce fluctuations in QP (after curve compression) [0.5] –zones /(x264) UNKNOWN (FFmpeg) Allows setting a specific quantizer for a specific region of video. –qpfile (x264) UNKNOWN (FFmpeg) Al...
by the results... some had fixed default export settings, most had a lower video quality at the same filesize. ffmpeg allows me to set the -crf (18-24 usually) and -preset (veryslow, fast..) which allows me to reduce the filesize drastically maintaining the same visible quality. ...
Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (default -1) -partitions <string> E..V.. A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all
I'm new in programming, I have some movies and want to convert them to hevc format to reduce storage space but keep quality video, i tried with my code through ffmpeg: **for %b in (*.mp4) DO ffmpeg -y -i "%b" -r 30 -g 50000 -q 22 -filter:v scale=650:-...
.V... Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (default -1) -partitions <string> E..V... A comma-separated list of partitions to consider. Possible values: p8x8, p4x4, b8x8, i8x8, i4x4, none, all -direct-pred <int> E..V... Direct MV pred...
✅ Option 2: Make FFmpeg reduce video size by downscaling resolution Command: ffmpeg -i input.mp4 -vf scale=720:480 -c:a copy downscale.mp4 Result size:46.4MB downscale.mp4 ✅ Option 3: Make FFmpeg reduce file size by lowering the bitrate ...
Using an encoder that encodes more quickly (or possibly even raw format?) might reduce latency. You might get less latency by using one of the "point to point" protocols described in this document, at well. You'd lose the benefit of having a server, of course. ...