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MP4 was firstly specified as an audio
format with little relation with MPEG-4, and just like the
relationship between MP3 and MPEG-3. But now it tends to be
a video format and equals to MPEG-4 Part 14 with the
extension of *.mp4. It mainly stores digital audio and
digital video.
MKV is a common video file defined by
Matroska Media, a new multimedia package format. The feature
of MKV is that it could hold many types of encoded video,
audio and subtitles stream.
To convert mp4 to MKV file, please
install the appropriate mp4 decoder and audio decoder for
the mp4 format such as
FFDSHOW, DivX, XviD etc.
Download
MKV Converter which can
convert mp4 to mkv file. Then please install
MKV
codecs. Select a mp4 file, set some parameters such as
DivX or
XviD as
the video compressor, Microsoft ADPCM as the audio
compressor, adjust the resolution, frame rate etc if
necessary.
HDV is one kind of high-definition
format which is declared jointly by Canon, Sharp, Sony and
JVC. HDV Standard aims to develop Quasi-professional small
high-definition cameras and portable high-definition home
video cameras to make HD popular in broader scope. Now the
main HD video resolution is 1280*720 and 1920*1080 and the
Video proportion is 16 to 9. Camcorder is digital camera
recorder.
To convert HDV to mkv, please install
HDV codec from the manufactory. |
