FG

What is mp4v and mp4a?

Fresh3 days ago
Mar 15, 202637256 views
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Problem

When playing a MP4 file VLC tells me the video and audio codecs are mp4v and mp4a. The quality is good at low bitrates. However, the MP4 Streaming Faq tells me that mp4v means raw MPEG4 streams. What does this mean? It clearly isn't unencoded video.

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Fix for: What is mp4v and mp4a?

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VLC is telling you the truth - it looks to me (without actually seeing the file) that your MP4 file is a MPEG-4 container with MPEG-4 codecs being used for the audio and video. MPEG-4 is both a container and a codec: MPEG-4 is a form of MPEG encodin…

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