AVCONV/FFMPEG Preset Parameters
| Parameter | Description | Example Value |
|---|---|---|
| b:v | Video Bitrate | 150k |
| b:a | Audio Bitrate | 192k |
| ac | Set Number of Audio Channels | 2 |
| crf | Constant Rate Factor | 23 |
| qscale | Constant Quality Scale. {1,30} | 20 |
| prefwidth | Preferred Width | 640 |
| prefheight | Preferred Height | 480 |
| vcodec | Video Codec | libx264 |
| acodec | Audio Codec | libfaac |
| preset | Provides a certain encoding speed to compression ratio | medium |
| threads | Set the Thread Count | 2 |
| b | Set Bitrate (Output, Audio, Video) | 200k |
| vpre | Loads vpre preset file (Legacy) | |
| fpre | Loads fpre preset file (Legacy) | |
| fps | Desired Output Framerate | 30 |
| ab | Audio Bitrate | 192k |
| ar | Set Audio Sampling Rate (in Hz) | 44100 |
| setpts | Change the PTS (presentation timestamp) of the input video frames | 10 |
| scaledownonly | Prevents scaling width and height greater than original video size | true |
avconv
preset parameters
transcoding
video
video conversion