BMP to MTS Converter

Convert BMP to MTS: What This Tutorial Covers

This walk-through is for anyone who needs to drop a Windows Bitmap (.bmp) — a screenshot, a diagram, a test pattern, or a title slate — into an AVCHD-era editing or disc-authoring timeline that only ingests camcorder transport-stream clips. The honest thing to know up front: this does not make a video of your image so much as hold your image as one motionless, silent frame for a duration you choose. Your BMP starts out as pristine, lossless pixels, but the .MTS output is H.264 video, which is a lossy encode — a clean first-generation one, not a pixel-identical copy.

How to Convert BMP to MTS

1. Upload Your BMP File: Drag and drop your .bmp onto the page or click "+ Add Files" to add one or several bitmaps at once.
2. Set Image Duration: Open the Image Duration control and choose how long the frame is held — the default is 5 seconds per frame, adjustable from a fraction of a second up to 10 seconds.
3. Set Quality Preset and Video Resolution (Optional): Leave Quality Preset on "Very High (Recommended)", and set Video Resolution to "Keep original" or a Fixed/Preset resolution; use Background Color (default Black) to pad any letterboxed area.
4. Convert and Download: Click "Convert" and save your silent .MTS clip. No sign-up, no watermark.

Walk-through: Why It's a Single Silent Frame, and How Big BMPs Are Handled

A BMP is a still image — it has no timeline and no soundtrack — so turning it into a transport-stream clip means deciding two things the bitmap does not contain: how long it plays and what fills the frame. This tool answers both:

• Duration. Every frame in the output is identical, so the clip is genuinely motionless. Image Duration controls the runtime; pick a length that matches the slot in your edit. If you queue several BMPs and choose Merge images under Merge Strategy, they are joined back to back — each held for its set duration — which is a sequence of stills, not a cross-faded slideshow. Video per image writes a separate .MTS for each file instead.
• It is silent. AVCHD normally carries Dolby AC-3 or linear PCM audio, but a still has no sound, so this output has no audio track at all. That is expected — there is nothing to mute.
• Resolution and your source size. AVCHD frames are video resolutions (1080p and below for the original spec). A large BMP — say a 4000-pixel-wide diagram — is scaled down to the chosen frame size on our servers; "Keep original" uses the bitmap's own dimensions, while a Fixed or Preset resolution forces a standard video size. If the image's aspect ratio does not match the frame, the Background Color pads the empty bars.

On quality: the BMP pixels going in are lossless, but H.264 is a lossy codec, so the encoded frame will not be byte-for-byte identical to the source — fine, hard edges and single-pixel lines in a screenshot or test chart are where you'd notice it first. Keeping Quality Preset high minimizes that, and because it is a one-shot first-generation encode, the result is clean for normal viewing.

Common Errors and How to Fix Them

• "My clip is completely silent" — that is correct. A still image carries no audio, so the .MTS has no sound track. Add audio later in your editor if the timeline needs it.
• "Fine lines or text in my screenshot look a little soft" — that is the H.264 encode, which is lossy. Set Quality Preset to "Very High", and if you need a pixel-exact still instead of a video, convert to BMP to PNG rather than to video.
• "My large BMP looks downscaled" — AVCHD frames top out at 1080p in the original spec, so an oversized bitmap is scaled to fit the chosen Video Resolution. Pick a resolution close to your source, or keep it a still image.
• "There are black bars around my image" — the bitmap's aspect ratio does not match the video frame, so the Background Color padding shows. Set a matching resolution, or change the padding color.
• "My AVCHD editor rejected the file" — leave the codec on its H.264 default (under Advanced Options). H.265 and MPEG-2 are selectable but are not part of the AVCHD spec and are commonly refused by AVCHD-era tools.

When This Doesn't Work

This converter renders the visible bitmap into a transport-stream clip, which covers the niche case — slotting a still slate, chart, or test pattern into an AVCHD timeline — well. What you download is the bare stream, not a camera-card folder structure, so copying it to an SD card will not reproduce a browsable AVCHD volume; AVCHD-aware tools such as tsMuxeR or multiAVCHD build that structure around the clip. And if your real goal is a still-as-video for phones, browsers, or modern editors, BMP to MP4 carries the same H.264 in a smaller, far more widely supported file — MTS is worth it only when a tool specifically expects the camcorder extension.

Frequently Asked Questions

Will converting BMP to MTS keep the image pixel-perfect?

No — and this is the key honesty point. A BMP holds lossless, uncompressed pixels, but .MTS is H.264 (MPEG-4 AVC) video, which is a lossy codec, so the encoded frame is not byte-for-byte identical to the bitmap. It is a clean, single first-generation encode, so for normal viewing it looks right; the difference shows up first on hard edges, single-pixel lines, and crisp text in screenshots or test charts. Keep Quality Preset on "Very High" to minimize it. If you need an exact, lossless copy of the picture, keep it an image — BMP to PNG compresses losslessly — rather than encoding it to video.

Why is my MTS clip silent — can I add sound?

Because a still image has no audio to carry. AVCHD itself supports Dolby AC-3 and linear PCM soundtracks, but there is nothing to encode from a single bitmap, so this output has no audio track. That is expected, not a fault. If your timeline needs sound under the still, add it in your video editor after import, or start from a source that already has audio.

Is MTS the same as M2TS, and should I use MP4 instead?

.MTS and .m2ts are the same BDAV MPEG-2 transport stream — AVCHD camcorders write the file as .MTS (a legacy 8.3 filename), and the identical stream is called .m2ts once it lands on a computer or Blu-ray disc, so you can rename one to the other without re-encoding. Choose MTS only when an AVCHD-era editor or authoring tool specifically expects that extension. For phones, browsers, TVs, and ordinary editors, BMP to MP4 wraps the same H.264 video in a smaller, far more widely playable file.

How long will the BMP play, and does it animate?

It plays for as long as you set in Image Duration — 5 seconds by default, adjustable from a fraction of a second up to 10 seconds — and it does not animate. Every frame is the same image, so the clip is genuinely motionless; it is a frozen still held on screen, not a moving shot. If you merge several BMPs into one clip, each is shown in turn for its duration, which is a sequence of stills rather than a slideshow with transitions.

What happens to a very large BMP — does it get downscaled?

Usually, yes. AVCHD frames are video resolutions — 1080p and below in the original specification — so a bitmap larger than the chosen frame is scaled down on our servers to fit. "Keep original" under Video Resolution uses the bitmap's own dimensions; a Fixed or Preset resolution forces a standard video size. If the image's aspect ratio does not match the frame, the Background Color (default Black) pads the empty area. In our testing, a 3000-pixel-wide BMP set to a 1080p preset was downscaled to fit the frame with the rest padded.

How are my files handled, and how long are they kept?

Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.