Burn Subtitles into Video - Hardcode SRT Subtitles

A Not yet. Our current version places subtitles at the bottom center using a default white font with black outline. We're working on adding font size, color, and position controls. For now, you can edit your SRT file to add basic styling tags like <b> or <i>. Most videos work fine with the default placement, but if you have vertical video content, you might want to test a short clip first to see how it looks.

A You'd need to trim the video first before uploading, since our tool doesn't have a built-in trimmer. Use a free editor like Clipchamp or OpenShot to cut your video down to, say, a 60-second clip for TikTok or Instagram. Then upload that trimmed file with your SRT. Burning subtitles on a shorter clip is faster, too — a 30-second piece might finish in under a minute.

A Not necessarily for YouTube. But if you're sharing a video on Instagram, TikTok, or sending it to someone who'll view it offline, hardcoded subtitles are the only way they'll always see them. Platforms like YouTube let users turn captions off. Once burned in, your text is part of the image. Short test: upload a 10-second clip with subtitles to see the difference before committing to a full video.

A You must upload both a video file and a separate SRT or VTT subtitle file. This tool won't extract embedded subtitles from an existing video. If your video already has soft subtitles (like MKV files often do), first use a free tool like Subtitle Edit to export them as SRT. Then upload both files here. For teachers preparing educational clips, this workflow ensures you can adjust timing before burning.

A No, we don't store your video. Processing happens entirely in your browser using WebAssembly, so your file never reaches our server. Once you close the tab, everything is gone. That means a 2GB wedding video or a sensitive work presentation stays private. The only trade-off is that your device does all the heavy lifting, so an older laptop might take longer. For marketers sharing internal training clips, this keeps your raw footage secure.

A That usually happens when your SRT file uses a tiny font size or your source video is low-resolution. Our tool renders text at the original video's pixel density, so a 720p clip won't get sharper subtitles just because you upscale it later. For crisp results, export your video at 1080p or higher before uploading. A 24-pixel font on a 4K file looks razor-sharp; the same font on a 360p clip will look mushy. Also check that your SRT doesn't use excessive line breaks — each line renders as one image block. If you're creating TikTok clips, stick to 1080x1920 and keep subtitles within the safe zone, roughly the bottom third of the frame.

A Nothing. Your audio stays completely untouched. The tool only renders text pixels onto the video frames, so the sound quality, volume levels, and any background music or voiceover remain exactly as they were. I've burned subtitles onto lectures and podcasts, and the audio file integrity held up perfectly. If you notice any sync issues after burning, check your SRT timing first — the tool follows it precisely. A good tip: keep a 100ms delay in your SRT if your captions feel early, especially when recording screen shares.

A Yes, but with a catch. Our tool processes the video frames and leaves every audio track untouched, so if your file has multiple language tracks, they all survive the burn. The SRT you upload gets burned onto the visuals regardless of which audio track a viewer selects. For a demo video with English and Spanish audio, just burn the English captions — Spanish viewers will hear Spanish but read English text. Test with a 30-second clip first to confirm the subtitle timing matches your primary audio track. One practical tip: if your video has hardcoded burned-in subtitles already, remove them first with a tool like HandBrake, otherwise you'll get double text.

A Yes, you can easily change your container format during the subtitle baking process. Just upload your .MOV file alongside your .SRT file, and our tool exports the final download as a standard .MP4 file. This saves you from running a separate conversion step in HandBrake before editing your clips. Most social media managers prefer this workflow when preparing iPhone footage for cross-platform campaigns. Make sure to double-check your audio sync after the export finishes.

A No compression happens during the process. The tool merges your text directly into the pixels at your original resolution. If you upload a crisp 1080p MP4 file, your downloaded video keeps that exact same visual clarity. Marketers preparing high-end promotional clips rely on this lossless text-rendering method every day. Always verify your source file looks sharp before you hit the render button.