Convert HEVC to MOD — Free Online Tool
Convert HEVC (H.265) video files to MOD format, the MPEG-2 based container used by JVC and Panasonic camcorders. This tool re-encodes the H.265 stream to H.264 using libx264, making the footage compatible with MOD-aware editing software and camcorder workflows.
to
FFmpeg Command
Copy this command to run the same conversion locally with FFmpeg on your desktop. Download FFmpeg
Drop your HEVC file here
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Settings
Note: Browser-based encoding uses approximate quality targets. For precise CRF compression, copy the FFmpeg command above and run it on your desktop.
Estimated output:
Conversion Complete!
DownloadHow It Works
HEVC and MOD are fundamentally incompatible at the codec level — MOD is rooted in MPEG-2 and typically expects H.264 or MPEG-2 video, not H.265. This conversion fully re-encodes the H.265 video stream into H.264 (libx264) at CRF 23, a visually transparent quality level for most content. Because HEVC achieves the same perceived quality at roughly half the bitrate of H.264, converting to H.264 will produce a noticeably larger output file even at the same visual quality. The output audio is encoded to AAC at 128k, since MOD containers do not carry through arbitrary audio streams. No subtitles, chapters, or multiple audio tracks are preserved, as the MOD format does not support these features.
What Each Flag Does
| Flag | What it does |
|---|---|
ffmpeg
|
Invokes the FFmpeg binary — the open-source multimedia processing engine that powers this conversion both in the browser (via FFmpeg.wasm) and on the desktop command line. |
-i input.hevc
|
Specifies the input file, an HEVC/H.265 raw video stream. FFmpeg reads the compressed H.265 bitstream and decodes it into raw frames for re-encoding into the target format. |
-c:v libx264
|
Re-encodes the video stream using libx264, the H.264 encoder, since MOD does not natively support H.265. This is a full transcode — every frame is decoded from HEVC and re-compressed as H.264. |
-c:a aac
|
Encodes the audio track to AAC (Advanced Audio Coding), the default audio codec for MOD output and broadly compatible with media players and editing software that handle MOD files. |
-crf 23
|
Sets the Constant Rate Factor for libx264 to 23, which is H.264's standard default quality level. Lower values produce higher quality and larger files; this setting balances visual fidelity with file size for the H.264-based MOD output. |
-b:a 128k
|
Sets the AAC audio bitrate to 128 kbps, sufficient for stereo audio in a camcorder-style MOD file. This replaces whatever audio bitrate the original HEVC source may have used. |
output.mod
|
Defines the output filename with the .mod extension, signaling FFmpeg to wrap the H.264 video and AAC audio in an MPEG-PS based MOD container as used by JVC and Panasonic camcorders. |
Common Use Cases
- Importing modern drone or mirrorless camera footage encoded in H.265 into legacy camcorder editing software that only recognizes MOD files from JVC or Panasonic devices
- Archiving HEVC recordings into a MOD-based project library alongside existing camcorder footage to maintain a consistent format across a multi-source video collection
- Preparing H.265 video for playback or editing on older NLE workstations whose hardware decoders support H.264/MOD but not H.265
- Re-packaging HEVC content into MOD so it can be ingested by broadcast or event production workflows built around JVC camcorder file structures
- Converting H.265 footage to a MOD-compatible H.264 stream as an intermediate step before further processing with tools that lack HEVC support
Frequently Asked Questions
HEVC (H.265) is roughly twice as efficient as H.264 at the same visual quality, meaning it stores the same detail in far fewer bits. When this tool re-encodes to H.264 at CRF 23 for MOD output, the encoder needs significantly more data to represent the same frames. A 500 MB HEVC file could easily become 1 GB or more as a MOD file, even though the visible quality may be comparable.
Original MOD files from JVC and Panasonic camcorders used MPEG-2 video inside a modified MPEG-PS container. However, in practice many software tools that read MOD files accept H.264 content in the same container wrapper. This tool uses libx264 to maximize compatibility with modern editing applications that ingest MOD files, rather than MPEG-2 which would reduce quality further.
No. HEVC commonly carries HDR10 or HLG metadata (color primaries, transfer characteristics, mastering display data), but the MOD format and H.264 codec combination used here does not support HDR signaling. The re-encode will convert the footage to an SDR-compatible H.264 stream, and HDR tone mapping is not applied automatically — highlights may appear clipped or washed out if the source was mastered for HDR.
The video quality is controlled by the -crf flag, which accepts values from 0 (lossless) to 51 (lowest quality) for libx264. The default here is 23, which is H.264's standard balanced setting. Lower values like 18 produce higher quality at a larger file size, while values like 28-35 reduce file size with more visible compression. Change it in the command like: ffmpeg -i input.hevc -c:v libx264 -c:a aac -crf 18 -b:a 128k output.mod
Yes, with a small shell script. On Linux or macOS, run: for f in *.hevc; do ffmpeg -i "$f" -c:v libx264 -c:a aac -crf 23 -b:a 128k "${f%.hevc}.mod"; done. On Windows Command Prompt, use: for %f in (*.hevc) do ffmpeg -i "%f" -c:v libx264 -c:a aac -crf 23 -b:a 128k "%~nf.mod". This is especially useful for files over 1 GB, which exceed the browser tool's limit.
The audio is re-encoded to AAC at 128 kbps regardless of the original audio format in the HEVC source. If your HEVC file contains AC-3, DTS, or lossless audio, it will be transcoded and some quality will be lost. MOD does not support multiple audio tracks, so only the first audio track from the source will appear in the output. If audio quality is critical, increase the bitrate by changing -b:a 128k to -b:a 192k or -b:a 256k in the command.
Technical Notes
The MOD format is a legacy container tied closely to JVC and Panasonic consumer camcorder ecosystems from the mid-2000s through the 2010s. It is structurally an MPEG-PS (Program Stream) variant and was never designed to carry H.265 content — making full re-encoding unavoidable here rather than a simple remux. The libx264 encoder is used instead of attempting MPEG-2 (libmpeg2) because it produces substantially better quality at equivalent bitrates and is better supported by modern software that reads MOD files. One significant limitation of this conversion is that HEVC's advanced features — including 10-bit color depth, HDR metadata (HDR10/HLG), and high-efficiency compression artifacts that look better at low bitrates — are all lost when transcoding to H.264. The output is strictly 8-bit, SDR. Additionally, MOD does not support embedded subtitles, chapter markers, or multiple audio tracks, so any of these present in the source HEVC file are silently dropped. For files larger than 1 GB, the displayed FFmpeg command is the recommended approach, as it runs natively on your machine with no size restrictions.