Video
Practical video jobs without the heavy software. Convert formats, extract audio, add or burn subtitles, reframe for social, turn clips into GIFs, merge, transcribe and summarise. Call any of these from one API, billed per job with no surprises.
Compute video aspect ratio crop
Turn a 1920×1080 landscape frame into 9:16 vertical video with a crop that starts 656.25 pixels from the left and keeps a 607.5 by 1080 rectangle, the largest…
Free · Runs in your browser
Video bitrate calculator for a target file size
A 600-second video that must stay under 100 MB needs about 1,267 kbps for video and audio together, once a 5 % safety margin trims the theoretical maximum.
Free · Runs in your browser
Video container and codec compatibility checker
MP4 with H.264 comes back as broad support, the safest choice across major browsers, iOS and Android, while an unusual pair such as VP9 in MOV is flagged before…
Free · Runs in your browser
Video frame rate conversion calculator
Moving 240 frames from 24 fps to 30 fps needs 60 duplicated frames, 300 in all, to keep the full 10 seconds; playing the original 240 at 30 fps instead lasts…
Free · Runs in your browser
Freeze Frame Duration Calculator
Hold a frame for 4.25 seconds at the 32.5-second mark of a 90-second video and the finished cut runs 94.25 seconds.
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GIF frame count calculator
A 12.5-second clip at 10 fps becomes a GIF of 125 frames, against 313 in the 25 fps source, so the animation carries roughly two-fifths of the original frame…
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Check video loop seam compatibility from frame colors
Two end frames whose red, green and blue averages differ by just 3 points overall, with brightness 0.5 apart, score 99.4174 out of 100 and pass the default 90…
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Audio video sync offset calculator
When the sound arrives 180 milliseconds before the picture, delay the audio by 180 milliseconds and leave the video untouched.
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Estimate video render time from duration and encoder speed
A two-minute program at 30 frames per second holds 3,600 frames, so an encoder sustaining 60 frames per second needs about one minute, twice as fast as…
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Video resolution scale calculator
Pick a delivery label and see the exact frame size: 1920 by 1080 converted to 720p becomes 1280 by 720, a factor of 0.666667, with a clear warning whenever the…
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Video speed change duration calculator
A 300-second video played at 1.25 speed lasts 240 seconds, exactly four minutes, and its untreated audio would rise almost four semitones.
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Generate a Storyboard Shot List Template
Describe a cyclist crossing an empty town square at dawn, ask for five shots and get a 25-second plan, from an establishing wide shot to a detail insert, built…
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Convert SRT subtitles to WebVTT online
Turn an SRT subtitle file into WebVTT that web players accept: 00:00:01,250 becomes 00:00:01.250, the WEBVTT header is added and multiline captions stay intact…
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Compute video thumbnail timestamps evenly
A 120-second video split into five previews gets evenly spaced frames that start at second 1, stop one second before the end and put the middle one at 60, away…
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Trim video by timestamp
Check a cut before you make it: in a video of 01:42:30, a clip from 00:12:15.5 to 00:14:45.75 is valid and lasts 150.25 seconds, or 00:02:30.25.
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Video watermark position calculator
Place a 240 by 120 logo in the bottom-right corner of a 1920 by 1080 frame with a 32-pixel margin and get its top-left point, x 1648 and y 928, checked to fit…
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B-Roll to A-Roll Ratio Checker for Video Edits
See the balance of your cut in one number: 180 seconds of B-roll in a 600-second interview is 30 %, inside the usual 20 to 35 % range, so you can talk about…
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Drop-frame vs non-drop timecode checker and frame calculator
Turn a timecode into an exact frame position: at 29.97 fps, 01:00:00;00 in drop-frame is frame 107892, after 108 skipped labels, or 3599.9964 seconds of real…
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Video export preset lookup by platform
Get matching export settings for where the video is going: for YouTube the preset is H.264 at 3840x2160, 60 fps and 53 Mbps, with vertical formats for Instagram…
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Calculate total render queue time and completion time
Three clips of 95, 430 and 35 seconds make a 560-second queue (9 min 20 s): started at 14:20 UTC, it finishes at 14:29:20 UTC.
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Letterbox bar pixel size calculator for video canvases
Know how big the black bars must be before you export: a 21:9 picture on a 16:9 canvas 1080 pixels high needs bars of 128.571429 px above and below.
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LUT blend intensity preview
See what a LUT looks like at partial strength before you commit: at 40 %, a base colour of #406080 graded towards #D08020 becomes #7A6D5A, given as hex and RGB…
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Build a video file naming convention
Project KTC, scene 12A, take 3 and 25 July 2026 become KTC_SC12A_T03_20260725.mov: one predictable name that sorts by production and date, so every clip can be…
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Build an adaptive streaming bitrate ladder from a source resolution
A 1920 × 1080 source gets four renditions, from 1080p at 5,000 kbps down to 360p at 800 kbps, each sized to keep the original shape and never enlarged beyond…
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Streaming service cost per hour watched calculator
Divide a month's subscription bill by the hours you actually watched: 20 hours of viewing means each hour costs one twentieth of the bill, in the same currency…
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Concert setlist time budget calculator
In a 25-minute set with 3 minutes of banter, the first three songs use 19.5 minutes and leave 5.5 to spare, while the fourth, a 7-minute closer, would need 1.5…
Free · Runs in your browser
Movie end time calculator
A 142-minute film that starts at 19:30 lets you out at 22:12 once 20 minutes of trailers are added.
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Playlist total duration calculator
Four tracks that add up to 690.5 seconds average 172.625 seconds each, and the count confirms none was left out.
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Check whether a video aspect ratio matches a platform requirement
See whether a video's shape fits where it will appear: 16:9 matches a standard YouTube video, while the same ratio in a vertical Shorts slot would need its…
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Convert total episode runtime to binge days
Twenty-four episodes of 45 minutes add up to 1080 minutes, or 18 hours, which is 6 viewing days at 3 hours a day.
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Calculate a multicam clip sync offset from audio spikes
Line up two camera angles from a single clap: if it sits at 12.48 seconds in the first clip and 9.73 in the second, delay the second clip by 2.75 seconds.
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Convert timecode to frame number
Turn a timecode into a frame number and back: 00:01:00:00 at 30 frames per second is frame 1800, counted from zero, so cuts, markers and captions land exactly…
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Shift SRT subtitle timing by milliseconds
Move every subtitle in an SRT file by one exact offset: a shift of -1500 milliseconds brings a line from 00:00:05,000 to 00:00:03,500, while the captions and…
Free · Runs in your browser
Streaming services total cost calculator
List every streaming plan on your statement and see the bundle's monthly total plus each fee multiplied by twelve, so the service with the biggest yearly impact…
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Frames to timecode
At 30 frames per second, frame 1,800 is exactly one minute, written 00:01:00:00, and frame zero is always 00:00:00:00.
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Resolution scale calculator
Multiply a frame by any factor and get its new size: 1920 by 1080 at a scale of 2 becomes 3840 by 2160, the 4K UHD frame, with even dimensions ready for…
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Time-lapse calculator
An eight-hour sunset captured every 5 seconds gives 5760 frames and a 192-second clip at 30 frames per second, 150 times faster than real life.
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Video file size calculator
A 60-second clip at 8 megabits per second with 128 kilobits per second of audio comes to 60.96 megabytes.
Free · Runs in your browser
Transcribe a video
Get the spoken words of a video back as text with timestamps, so an hour of webinar, interview or demo becomes searchable and quotable without an afternoon of…
$0.079
Add subtitles to a video
Send a video and get back a timed subtitle file transcribed from its spoken audio, whether it is a two-minute clip or a two-hour lecture.
$0.079
Burn subtitles into a video
Send a video and its SRT captions, and each cue is painted onto the frames at the right time, giving one file whose captions survive social apps, kiosk screens…
$0.077
Get the audio from a video
An interview filmed on camera becomes a separate audio file, ready for a podcast episode, a transcript or a dubbing project.
$0.077
Convert a video
Turn camera MOV footage into MP4 for the web, or older AVI recordings into MKV or MP4 for modern editing: the content stays the same while the container, and…
$0.077
Compress a video
Camera footage recorded at capture-quality bitrates is re-encoded with H.264, dropping detail a viewer is unlikely to notice so the file loads fast and stays…
$0.077
Trim a video
Shave the countdown, the trailing silence and the warm-up take off a recording by giving a start point in seconds and how long to keep from there, with the…
$0.077
Grab a video thumbnail
Pull a still frame from the exact second you name and use it as the poster image, so your video stops greeting viewers with a black box or a blurry…
$0.077
Turn a video into a GIF
Pick a start point and a few seconds of a clip and get back a looping GIF already trimmed, frame-rate capped and palette-tuned for the 256-colour limit, so it…
$0.077
Resize a video
Turn one 4K master into a 1080p or 720p copy that a mobile feed or slow connection can actually play, with the width following the original shape.
$0.077
Add a watermark to a video
Burn your logo into every frame of a video, in any of the four corners, so the mark that names you as the source travels with the file wherever it is…
$0.077
Extract frames from a video
Sample one frame every 10 seconds for thumbnail candidates, or one every 0.5 seconds for a labeled training set, and each still comes back as its own image…
$0.077
Read a video's metadata
Send a link to a video and get back its duration, container, video and audio codecs, resolution, frame rate and the bitrate of each stream, probed from the…
$0.077
Make a video vertical
Turn a 16:9 landscape video into a 9:16 vertical cut of 1080 by 1920, with the frame following the subject as it moves instead of slicing off faces, products or…
$0.077
Merge videos
Send an intro, the new episode and an outro in that order and get back one continuous video with all three pieces end to end, exactly as listed.
$0.077
Summarise a video
Understand an hour-long meeting, lecture or interview in the time it takes to read a page: the summary draws on both what is said and what is shown, and keeps…
$0.084