How do I re-encode MP4 to DivX without quality loss?
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Upload the MP4 file and our converter applies a CRF-based re-encode targeting visually-lossless DivX output (CRF 18 by default, lower = larger / higher quality). The codec is chosen to match the DivX container — H.264 / H.265 / VP9 / AV1 as appropriate.
Yes — audio is re-muxed when MP4 and DivX share an audio codec, or re-encoded to AAC / Opus / Vorbis depending on what the DivX container supports. Multi-track audio (commentary, alternate languages) is preserved in containers that support it (MKV, WebM, MP4).
Can I keep the original framerate going from MP4 to DivX?
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By default framerate is unchanged (MP4 24fps stays 24fps in DivX). If you need to change it (e.g. interlaced 29.97 to progressive 30fps) the framerate option handles 3:2 pulldown and deinterlacing in the same pass — no second decode required.
What is the file size difference between MP4 and DivX?
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Same-codec re-muxes (H.264 in both MP4 and DivX) produce nearly-identical sizes. Codec changes can swing things dramatically: H.264 -> H.265 typically halves the file at the same visual quality; H.264 -> VP9 is roughly comparable; AV1 is currently the smallest at the cost of slower encode time.
How long does converting a 1-hour MP4 file to DivX take?
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Depends on the codec change. Same-codec re-mux: 30-60 seconds (no re-encode). Re-encode to a different codec: typically 0.3-0.7x source duration on our GPU pipeline, so a 1-hour MP4 -> DivX finishes in 18-40 minutes; AV1 re-encodes are 2-3x slower.
What is the max resolution supported for MP4 to DivX?
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Up to 8K (7680x4320) on Pro. Free is capped at 4K per the file-size limit. HDR metadata (HDR10, Dolby Vision) is preserved where both MP4 and DivX containers and codecs support it; SDR sources stay SDR.
Is my MP4 video private during DivX conversion?
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是——上传视频文件由孤立的工人处理,在完成后几分钟内删除,不进行人性审查,除有记录窗口外不保留。
Can I crop or trim during the MP4 to DivX step?
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Not in the same step — use /video-trim/ or /video-cutter/ to clip the MP4 first, then queue the MP4 -> DivX conversion. Trim-then-convert is faster than re-encoding the whole file just to crop the output.
Why is the DivX file blurry compared to the MP4 source?
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Almost always a bitrate-too-low setting. Re-encoding a high-bitrate MP4 into a lower-bitrate DivX at the default CRF compresses motion-heavy scenes heavily. Push CRF down to 16-18 (or set an explicit bitrate ceiling) and re-run to recover quality.
Does the MP4 to DivX converter support subtitles?
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Yes — embedded subtitle tracks (mov_text in MP4, SRT / ASS in MKV, WebVTT in WebM) are preserved when both MP4 and DivX containers support them. Burned-in (hardsub) subtitles transfer automatically because they are part of the pixel data.