AVC1 to MP4 Converter

Convert videos labeled avc1, AVC, H264, or H.264 into a standard MP4 file online. Use this page when the source is already H.264/AVC and you need a cleaner MP4 container or broad upload and playback compatibility.

AVC1 is not AV1. AVC1 is an H.264/AVC codec tag. AV1 usually appears as AV1 or AV01, and should use the AV1-specific converters linked below.

Need the AV1 page instead?

If your codec details say AV1, AV01, or AOMedia Video 1, choose an AV1 converter instead of this AVC1/H264 page.

AV1 / AV01からMP4コンバーター AV1からH264コンバーター

Convert AVC1/H264 video to MP4

Video File (AVC1/H264)

Drop your .mp4, .mov, .mkv, .avi, or .m4v file here or click to upload

Supports video uploads within the existing site limit, including files up to 1 GB.

AVC1, H264, and MP4 explained

AVC1 is a codec identifier commonly shown by media tools for H.264/AVC video, especially inside MP4 containers. It does not mean AV1. If your file says avc1, you are usually dealing with H.264 video that may need a standard MP4 output, not an AV1 re-encode.

MP4 is the container: it stores video, audio, subtitles, and metadata. H.264/AVC is the video codec inside that container. Converting AVC1 to MP4 can help when a file came from another container, has upload problems, or needs normalized H264 video with AAC audio in an MP4 file.

Related codec converters

MP4 Codec Converter Hub

Compare all dedicated MP4 codec conversion pages.

AV1からH264コンバーター

Use this when the source codec is true AV1 or AV01 and the target is H264.

AV1 / AV01からMP4コンバーター

Convert true AV1 or AV01 video into standard H264 MP4.

H265からH264コンバーター

Convert HEVC, H265, hvc1, or hev1 video into H264 MP4.

HEVC to MP4 Converter

Create a standard MP4 from H265/HEVC source video.

ビデオコンバーター

Start here if you only know the file extension or want another output format.

Frequently asked questions

Is AVC1 the same as AV1?

No. AVC1 is a codec identifier commonly used for H.264/AVC video inside MP4 files. AV1 usually appears as AV1 or AV01 and is a different, newer codec.

When should I convert AVC1 to MP4?

Use this page when a media tool, browser error, or upload site shows avc1, AVC, or H.264 details and you need a normal MP4 file for playback or upload compatibility.

What if my file is actually AV1 or AV01?

If the codec is AV1 or AV01, use the AV1 to MP4 or AV1 to H264 page instead. Those pages target true AV1 video rather than AVC1/H264 files.