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