Questions tagged [video-compression]
44 questions
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Video Compression - When would an average of the previous and next I or P frame be useful
I'm doing practice exam questions for my multimedia systems exam one tuesday and a topic which seems to come up frequently is the appropriate use of encoding B-frames based on:
1) the previous I or P frame
2) the next I or P frame
3) an average…
user1058210
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How many DCTs per second to play DVD?
If I'm watching a DVD, how many [inverse?] descrete cosine transforms per second is my computer performing?
If I'm understanding this correctly, DVD video uses MPEG 2, which is basically MPEG 1 but with only one possible resolution and frame rate.…
MathematicalOrchid
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if a video contains one short scene and repeats N times for 6 hours, is there a video compression algorithm that will detect the looping scene?
for example
there are lots of videos that contain a single short scene that is about 20 seconds long
then loops the scene for about 6 hours
the video then has music
the purpose of the video is mostly the music
if a video contains one short…
Trevor Boyd Smith
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Can lossy video encoding result in identical adjacent frames?
When using lossy encoding can similar adjacent video frames become merged or even identical?
For example, if frames A, B and C occur in sequence and are similar but different, can the encoded video render A, A, A when played?
I am referring to this…
52d6c6af
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1 answer
I B P video frame reordering
I am studying H264 video these days. I know video encoder will do frame reorder for GOP with B pictures.I am not sure if my understand is correct!
GOP input to encoder (it's raw data but I just map it as GOP for better understand).
I(1) B(2) B(3)…
lucky1928
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0
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what is the actual output of a video decoder?
I'm trying to understand how video compression works by looking at the HEVC encoder, and I was wondering how a compressed video looks like; I mean, in the encoder, the last step is entropy coding (CABAC), therefore, assuming we code a single…
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Vector based video coding, could it match the latest hybrid coders?
I could not find any image/video/media coding stackexchange so I thought that maybe this one would be the best fit.
It seems to me that the state of the art in video coding is constantly being pushed forward in terms of bigger macroblocks, more…
mathreadler
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