"Worksheet","Budget video bitrate for a hard file-size limit","Evidence status","Your configuration"
"Purpose","Allocate the total size budget across duration, audio and a stated reserve before choosing video bitrate. Then measure the actual exported bytes, especially when the limit is strict.","Proposed workflow",""
"Check","Question to record","Decision","Your observation"
"Total budget","All permitted bytes","Confirm units",""
"Audio","Audio bitrate × duration","Include every required stream",""
"Video","Remaining average bitrate","Verify actual output",""
"Example","For an illustrative decimal 100 MB limit and 60-second video, total average rate is 100 × 8 ÷ 60 = 13.333 Mbps before reserve. Stereo audio at 0.320 Mbps leaves 13.013 Mbps for video before overhead. Reserving 5 MB first instead leaves 12.347 Mbps. The 5 MB reserve is a chosen assumption, not a universal requirement.","Illustrative; not a measured product result",""
"Source","https://ffmpeg.org/ffprobe.html","Official references; scope in article",""
"Result","Accepted / unresolved / needs correction","Record date and configuration",""