play at double speed

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Patrick Truong
Patrick Truong 2016 年 10 月 5 日
コメント済み: Walter Roberson 2017 年 5 月 24 日
Hi,
I am taking a course at MATLAB academy. Is it possible to play the course video sessions in 2x speed?
  2 件のコメント
Walter Roberson
Walter Roberson 2017 年 5 月 24 日
Behrang Sharif:
Your question is different. The original question was about watching MATLAB Academy instructional videos speeded up, which is difficult because no useful interactive control is given for that.
With regards to readFrame: it is not necessary to display every frame. It is, however, necessary to read every frame in any of the compressed video formats, as the decompression depends upon the previous frame having been decoded. For H.264 video, the decompression can also depend up future frames.
The only leeway that the compressed video formats have is that some of them offer "key frames", which are completely uncompressed; if you are jumping by a bunch of frames, you can jump to the key frame that most immediately proceeds the target frame, and decode from that key frame to the target frame.

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回答 (1 件)

Pritesh Shah
Pritesh Shah 2016 年 10 月 5 日
I think, not possible.

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