Clapr Blog
Blog
Browser-native video tips, FFmpeg internals, and Clapr product updates.
DaVinci Resolve Quick Export vs Deliver Page: What Differs
Five official Blackmagic lists give five different sets of platforms Quick Export can upload to. All five side by side, plus what the Deliver page documents.
Discord Attachment Link Expired: What Actually Expires
Discord attachment links are signed URLs with a preset expiry — Discord never publishes the duration. What ex, is and hm mean, and which links never expire.
Teams Recording Is View Only With No Download: Which Policy?
A Teams recording that plays but won't download comes from one of two unrelated admin policies. How to tell which one you hit, and what each actually covers.
CapCut Export Settings: What the Official Docs Say
A source-checked guide to CapCut export settings — which resolution, frame rate and bit rate options the help center documents on web, desktop and mobile.
Shotcut Best Export Preset: Official Picks by Scenario
Shotcut's FAQ names an export preset for six scenarios, from YouTube to SDI capture. Here is that table, and where the official guidance stops.
YouTube Recommended Upload Encoding Settings, Explained
YouTube's recommended upload encoding settings in full — the SDR and HDR bitrate tables, plus the official lines showing these are suggestions, not rules.
DaVinci Resolve Bypass Re-encode When Possible, Explained
What Resolve's Bypass re-encode checkbox copies, what silently disables it, and why H.264 and H.265 clips never qualify in the official codec table.
iPhone 4K PAL: What That Camera Setting Actually Means
Apple defines PAL in a single line of the iPhone User Guide. Here is that definition, where the PAL options appear, and what Apple leaves unsaid.
Telegram Video Message vs Video File: Not the Same Thing
A Telegram video message is a separate media type, not a smaller video. What the official API says about round video notes, video files and send-as-file.
Premiere Pro Export: MOV or MP4? How to Choose
In Premiere Pro, MOV vs MP4 is the Format menu, not a checkbox. What Adobe documents about each, and the one case where MOV exports without re-encoding.
VLC "Keep Original Track": What It Means and When to Use It
VLC's "keep the original track" means no transcoding at all. Here is VideoLAN's own definition, the one condition it needs, and when a container refuses.
DaVinci Resolve MP4 vs QuickTime Export: What Differs
DaVinci Resolve's MP4 and QuickTime exports are not interchangeable. What the manual says about each, which presets pick which, and what MP4 costs you.
HandBrake RF Value Explained: What to Set, by Encoder
What HandBrake's RF value really controls, the official recommended ranges for x264, x265 and SVT-AV1, and the one encoder where the scale runs backwards.
OBS Hybrid MP4 Explained: What It Fixes and What It Doesn't
Hybrid MP4 arrived in OBS 30.2 and writes fragmented, then soft-remuxes. Here is what that buys you, and the one thing a crash still costs.
Why Adobe Media Encoder's Queue Is Slow With Multiple Files
Media Encoder encodes sources in sequence and outputs in parallel. Here is what that means for a slow queue, plus watch folders and per-job speed settings.
Shotcut Encoders: h264_nvenc vs h264_qsv vs h264_vaapi
What Shotcut's hardware encoder names mean, which official page documents each backend, and why half of them never show up in your Configure dialog.
WordPress.com vs WordPress.org Video Limits, Explained
Self-hosted WordPress reads its upload limit from php.ini. WordPress.com reads it from your plan. What sets each number, and what to do at the ceiling.
X Ads Video Specs: Two Official Pages, Two Answers
business.x.com serves two live pages both titled Creative ad specs, and they disagree on ad length, file size and product names. Here is what each says.
Instagram Carousel Video vs Reels: What Changes
Instagram says videos in carousels are not reels. Here is the one official sentence that draws the line, what it costs you, and how many clips actually fit.
OBS: MKV or MP4? What OBS's Own Docs Say
OBS recommends MKV, warns against recording straight to MP4, and its own formats page contradicts itself about the default. Here is how to choose.
Premiere Pro Export Captions: Text Panel vs Export Mode
Premiere documents two caption export routes and their format lists do not match. Here is what each one offers, quoted from Adobe's own pages.
SRT vs VTT: One of Them Is a Standard, the Other Is a Convention
Almost every comparison calls SRT and WebVTT two subtitle standards. Only one of them has a specification. That asymmetry explains the timestamp difference, why renaming the file fails, and exactly what you lose converting VTT to SRT.
YouTube VTT vs SRT Captions: What VTT Actually Adds
On YouTube, WebVTT buys you positioning and three markup tags over SRT, not full CSS styling. Here is what YouTube's own caption format page says.
Zoom Recording File Formats Explained: MP4, M4A, M3U, VTT
Zoom saves recordings in six file formats. What MP4, M4A, M3U, TXT, CC.VTT and VTT each contain, and why Zoom's developer docs list a different set.
Shipping FFmpeg in the Browser: What 32MB of WebAssembly Actually Costs
We run FFmpeg inside the browser tab so video files never get uploaded. Here is what that really involves — the multi-threaded core we had to abandon, the cross-origin isolation we did not end up needing, and the routing bug it left behind.
Gmail vs Google Drive Video File Size Limits
Gmail's 25 MB and Drive's 5 TB are two separate rule sets, not one sliding scale. Here is what each one measures, with Google's own wording quoted.
X Media Studio Upload Specs vs Web Upload, Compared
X's Media Studio spec sheet says in writing that it does not apply to desktop, mobile, or API uploads. Here is what each set of numbers covers.
Audacity AUP3 Won't Open in Other Programs? Here's Why
Audacity's manual says an AUP3 project can be opened only by Audacity. Here is what the project keeps, what it drops, and how to export a usable file.
DaVinci Resolve Hardware Acceleration Encoding, Explained
DaVinci Resolve's hardware encoding checkbox is not the same as the playback decode setting in System Preferences. Here is what each one actually does.
Premiere Pro CBR vs VBR: Which Is Better for Export?
Adobe's own wording, quoted: CBR plays back more reliably, VBR tends to look better. What each bitrate control does and which one to pick.
What Video Format Does iPhone Record In? MOV or MP4
Apple's spec sheets name the codecs an iPhone records - HEVC, H.264, ProRes - but not the container. Here is what the official pages actually say.
Loom WebM or MP4? What It Records vs What You Download
Loom's Chrome extension encodes into a WebM container, but every Loom download is .MP4. Here is what that split means for quality, audio and editing.
CapCut Burned-In Captions vs SRT File: Which to Export
CapCut's export panel has two separate options, Caption Export and Video Export. Here is what each path gives you and when the SRT route is closed.
Zoom CC.VTT vs VTT File: What Each One Actually Contains
Zoom saves two different VTT files with a cloud recording. CC.VTT is the closed caption file, VTT is the audio transcript — here is how Zoom defines each.
How to Compress a Video Without Losing Quality
Learn how to reduce your video file size without visible quality loss. Covers bitrate, CRF, codec basics, and browser-based compression with no upload needed.