Guides

Compress video for Discord — under 10 MB — Get any video under Discord’s 10 MB limit without Nitro. Exact size, best possible quality, batch and split long clips into 10 MB parts. Runs in your browser.
Compress a video to 10 MB — or any exact size — Shrink a video to exactly 10 MB, 25 MB, 8 MB or any size you choose. Batch compress many videos at once — none ends up bigger than your limit.
Compress video for email — Make a video small enough to attach to an email. Gmail and Yahoo allow 25 MB, Outlook 20 MB — but attachments grow by a third. Get it right the first time.
Compress video for WhatsApp and Telegram — Make videos small enough to send quickly on WhatsApp and Telegram without the app crushing the quality. 720p, H.264, plays on every phone.
Reduce video size without visible quality loss — Shrink videos 2–4× with no visible quality loss using HEVC (H.265). Batch whole folders, keep capture dates, nothing uploaded.
Split a video into parts — by size or by length — Cut a long video into parts under 10 MB (or any size), or into fixed-length pieces for X, WhatsApp Status and more. Batch, no upload.
Compress a screen recording for GitHub issues and PRs — GitHub limits video attachments in issues and pull requests to 10 MB on free plans. Shrink screen recordings to fit — in the browser, nothing uploaded.
Compress video for a text message (MMS) — Send a video as a regular text message. Carriers limit MMS to 1–3.5 MB; this makes a short clip that goes through on any network.
Prepare video for X (Twitter) — Get videos accepted by X: under 2 min 20 s and 512 MB, H.264, up to 60 fps. Longer videos are split into 2:20 parts automatically.
Make a vertical video for TikTok, Reels and Shorts — Turn any video into a vertical 1080×1920 clip for TikTok, Instagram Reels and YouTube Shorts: crop or fit with bars, 30 fps, H.264.
iPhone video to MP4 that plays anywhere — Convert iPhone HEVC and HDR (Dolby Vision) videos to standard MP4 H.264 with normal colors so they play on Windows, Android, old TVs and projectors.
Convert variable frame rate (VFR) to constant for editing — Phone videos and screen recordings use a variable frame rate that makes audio drift in Premiere, Resolve and Vegas. Convert to constant frame rate free.
Normalize video loudness (LUFS) — Normalize the loudness of videos to −23 LUFS (EBU R128), −24 LKFS (ATSC A/85), −16 or −14 LUFS with a true-peak limit. Measured per BS.1770, batch, in your browser.
TV commercial delivery specs by country — TV ad delivery specs for 31 countries: loudness (EBU R128, ATSC A/85), true peak, frame rate and resolution. Upload a channel spec and get a matching file.
App Store app preview — specs and converter — Convert screen recordings to App Store app preview format: exact resolutions for iPhone and iPad, 15–30 s, 30 fps, H.264, stereo AAC. Free, in the browser.
Website background video: small WebM + MP4 — Make a lightweight hero/background video for your website: WebM (VP9) + MP4 (H.264) pair, no audio track, 30 fps, ready for autoplay. Webflow-friendly.
Etsy listing video — requirements and converter — Prepare product videos for Etsy listings: 5–15 seconds, under 100 MB, no sound (Etsy removes it), sharp 1080p. Also eBay: under 150 MB.
Convert HEVC (H.265) to MP4 H.264 — Convert HEVC / H.265 videos to MP4 H.264 so they play on Windows without extensions, older TVs, Android and in any editor. In your browser, no upload.
Compress MOV videos — Shrink large MOV videos from iPhone, Mac screen recordings or cameras into MP4 files that play everywhere. Free, private, nothing is uploaded.
Instagram Reel size and format — Instagram Reels are 1080×1920 (9:16), up to 90 s in the app (3 min for uploads), H.264 + AAC. Convert any video to the right size and format in your browser.
Compress a video to 25 MB — Make any video 25 MB or smaller for Gmail, Canvas and upload forms. Batch compress — every file stays under the limit. Runs in your browser, no upload.
Compress a video to 20 MB — Make any video 20 MB or smaller for Outlook and other 20 MB limits. Batch compress — every file stays under the limit. Runs in your browser, nothing is uploaded.
Compress a video to 100 MB — Make any video 100 MB or smaller for WhatsApp, Slack, forums and upload forms. Every file stays under the limit. Runs in your browser, no upload.
Compress MP4 files — Make MP4 files smaller in your browser. Choose the exact size or keep the quality, batch-compress folders, no upload and no file size limit. Free, no watermark.
Compress 4K video — Reduce the size of 4K videos from iPhone, GoPro, DJI or cameras. Keep 4K at half the size, or convert to 1080p for sharing. Free, in your browser, no upload.
Compress video for Instagram — Prepare videos for Instagram so they upload fast and stay sharp: 1080×1350 for the feed, 1080×1920 for Reels and Stories, H.264 + AAC, 30 fps. Free, no upload.
Trim a video — fast, without losing quality — Trim a video in seconds: cut the start and end without re-encoding, so quality stays identical. MP4, MOV, MKV, WebM, any size. Runs in your browser, no upload.
Add subtitles to a video automatically — Automatic subtitles from speech with Whisper AI running in your browser. Edit the text, download SRT or VTT, or burn captions into the video. No upload, no account.

TV, TV box and projector from a USB stick

Make your videos play on your TV from a USB stick — Pick your TV, box or projector and drop your videos: get files it really plays — with sound, the right language and subtitles, sized to fit your stick.
Picture but no sound from USB? It’s the audio track — Picture but no sound on your TV from USB? The audio is DTS or TrueHD. Convert just the sound to AAC and keep the video as is — in your browser, no upload.
Video over 4 GB won’t copy to the USB stick? — FAT32 sticks can’t hold files over 4 GB. Shrink a film to 3.9 GB at the best quality, or split it into parts — without reformatting the stick. Free, in your browser.
Fit a whole season (or all your films) on one USB stick — Choose the stick size and every episode is sized to fit — same quality across the batch, the best resolution for the space, tidy Season folders.
TV plays the wrong audio language? Keep only the right track — TVs often play the first audio track and ignore “default”. Set one language rule for the whole batch — the right track is kept and made the only one.
Dialogue too quiet, explosions too loud? — Make dialogue clearer on TV speakers: 5.1 downmix with a louder centre, dynamic range compression for night viewing and equal loudness for every episode (EBU R128).
Subtitles not showing on the TV? — TVs want the .srt in the same folder with the same name, in lowercase, often in UTF-8. Or burn subtitles into the picture so they show on any device.
HEVC 10-bit (x265) stutters or won’t play? — Older TVs, Fire TV Sticks and budget Android boxes stutter or refuse HEVC Main 10 and H.264 Hi10P. Check the file and convert to 8-bit H.264 [email protected].
Old AVI files won’t play on a new TV? — Newer TVs often refuse XviD/DivX AVI files. Convert old AVIs to H.264 MP4 in your browser — or the other way round, to XviD AVI for an old DVD player.
Android TV box won’t play a video? — Cheap Android TV boxes (X96, H96, MXQ, Mi Box) often refuse USB videos or play them silently. Convert to what your box’s chip really plays — free.
Projector plays no sound, or won’t open the file? — Budget projectors play H.264 up to their panel resolution and usually lack Dolby/DTS. Convert videos to 720p/1080p H.264 with AAC so they play — and save space.
PS5 or PS4 won’t play your video from USB? — PS5 plays H.264 in MP4/MKV from exFAT or FAT32 sticks — no HEVC, no NTFS. Convert your videos to match in your browser.
Playing videos from USB on a Fire TV Stick — Fire TV Sticks need an OTG adapter for USB, read FAT32 (older models), and only pass DTS through. Convert videos to H.264 + AAC/AC3 that every Fire TV plays.
Samsung TV: what plays from USB — What Samsung TVs play from USB by year: DTS removed in 2018, HEVC Main10 on UHD models, DivX/XviD on newer models hit-and-miss. Type your model code to check a file.
LG TV: what plays from USB — What LG TVs play from USB: H.264 up to L4.2/5.1, HEVC Main10, DTS dropped in 2020 models. Type your model (OLED55C1, 55UN7300) to check a file.
MKV to MP4 — fast, without re-encoding — Convert MKV to MP4 in seconds: the video is copied as is, only the container (and DTS/AC3 sound if needed) changes. Batch whole folders. Runs in your browser.
Which video formats play from USB — device table — One table for 45+ devices: Samsung, LG, Sony, Hisense, TCL, Philips, Roku, Fire TV, Mi Box, Android boxes by chip, projectors, PS4/PS5, Xbox, DVD players.

Для ТВ с флешки (по-русски)

Видео, которое телевизор сыграет с флешки — Выберите телевизор, приставку или проектор и перетащите видео: получите файлы со звуком, нужным языком и субтитрами, которые влезут на флешку.
Картинка есть, а звука нет? Дело в звуковой дорожке — Samsung, LG, Roku и проекторы показывают картинку, но не играют DTS, TrueHD или Dolby. Проверьте дорожки и переделайте только звук в AAC — видео скопируется.
Файл больше 4 ГБ не помещается на флешку? — На флешку FAT32 нельзя записать файл больше 4 ГБ. Ужмите фильм до 3,9 ГБ с лучшим качеством или разрежьте на части — без форматирования флешки.
Уместить весь сезон (или все фильмы) на одну флешку — Выберите объём флешки — CompressLab подгонит все серии при одинаковом качестве, с лучшим разрешением для этого места и папками «Season 01».
Телевизор не воспроизводит видео с флешки? — Почему ТВ, приставка или проектор не играет MKV, HEVC 10-bit, AVI или 4K с флешки. Проверьте файл под свою модель и перекодируйте под неё в браузере.