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The 3ivx DirectShow Media Muxer combines MPEG-4 Video and Audio streams into an MP4 file. It supports multiple audio and video tracks with Variable Frame Rates and positive or negative Offsets. The muxer supports MPEG-4 Video encoded by many different MPEG-4 encoders, including 3ivx D4 4.5, DivX 4, 5 and XviD.
The Media Muxer can repair some non-compliant MPEG-4 bitstreams, by rebuilding or correcting the video header information and unpacking packed B-Frames when necessary.
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Configuration Options
Optimize and Make Streamable
When checked the muxer will reorder the final bitstream so that the header information is at the beginning as well as interleaving the audio/video payload to minimize seeking, thus producing a streamable MP4 file. The process of reordering and interleaving can take a while as the entire file needs to be rewritten. This can cause an application to not respond (or pause). The duration of the pause is approximately as long as the time needed to duplicate the file. Recommended
Compress MOV Headers for Fast-Start
If checked when writing a MOV file the muxer will recursively compress the video headers using the gzip algorithm. This can dramatically reduce the header overhead of a file, and decrease the pre-load time when progressively downloading a MOV. Header Compression is compatible with QuickTime 3 or later. Recommended
Compress NVOPs
Replaces NVOPs with MP4 Dropped Frame Encoding resulting in a smaller file size and compatibility with MP4 Tools that do not support NVOPs. Recommended
Providing the muxed MPEG-4 Video and Audio streams are MPEG-4 compliant, or can be corrected, the resulting MP4 files will be compliant and are capable of being played back by MPEG-4 players such as the 3ivx D4 4.5, Apple QuickTime 6, Philips Platform4 player and EnvivioTV. |
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