rpicam x3 x4배속

음.. 해보니 되긴한데..

vlc에서도 배속 재생이 되는거 첨 알았네 ㅋㅋ

아무튼... 기본적으로 무조건 30fps로 h.264 스트림이 저장되니

vlc 에서 4배속으로 재생해야 320x240@120fps로 저장된게 정상속도로 재생된다.

테스트 해보니...

원본은 팟플레이어 에서만 재생 VLC 재생불가

변환은 팟플레이어, VLC 빠르게 이상없음

흐음...

+

결론은 파일로 저장되는 스트림에 대해서 120p 90p 60p로 저장이 되고, 

해당 스트림은 30p로 설정되어 슬로우 모션으로 재생됨 끝

$ MP4Box -fps 30 -add video_120p.h264 video_120p.mp4

AVC-H264 import - frame size 320 x 240 at 30.000 FPS AVC Import results: 1296 samples - Slices: 22 I 1274 P 0 B - 0 SEI - 22 IDR Saving to video_120p.mp4: 0.500 secs Interleaving

$ MP4Box -fps 30 -add video_120p.h264 video_120p.mp4 -v

[iso file] Current top box start before parsing 2 [iso file] Read Box type ftyp size 24 start 0 [iso file] Current top box start before parsing 2 [iso file] Read Box type moov size 6319 start 24 [iso file] Read Box type mvhd size 108 start 32 [iso file] Read Box type iods size 21 start 140 [iso file] Read Box type trak size 6182 start 161 [iso file] Read Box type tkhd size 92 start 169 [iso file] Read Box type mdia size 6082 start 261 [iso file] Read Box type mdhd size 32 start 269 [iso file] Read Box type hdlr size 59 start 301 [iso file] Read Box type minf size 5983 start 360 [iso file] Read Box type vmhd size 20 start 368 [iso file] Read Box type dinf size 36 start 388 [iso file] Read Box type dref size 28 start 396 [iso file] Read Box type url  size 12 start 412 [iso file] Read Box type stbl size 5919 start 424 [iso file] Read Box type stsd size 163 start 432 [iso file] Read Box type avc1 size 147 start 448 [iso file] Read Box type avcC size 41 start 534 [iso file] Read Box type btrt size 20 start 575 [iso file] Read Box type stts size 24 start 595 [iso file] Read Box type stss size 104 start 619 [iso file] Read Box type stsc size 52 start 723 [iso file] Read Box type stsz size 5204 start 775 [iso file] Read Box type stco size 364 start 5979 [iso file] Current top box start before parsing 2 [iso file] Read Box type mdat size 1620390 start 6343 [iso file] Current top box start before parsing 2 [iso file] Read Box type free size 59 start 1626733 AVC-H264 import - frame size 320 x 240 at 30.000 FPS AVC Import results: 1296 samples - Slices: 22 I 1274 P 0 B - 0 SEI - 22 IDR Saving video_120p.mp4: 0.500 secs Interleaving

$ MP4Box

MP4Box [option] input [option]  -h general           general options help  -h hint              hinting options help  -h dash              DASH segmenter help  -h import            import options help  -h encode            encode options help  -h meta              meta handling options help  -h extract           extraction options help  -h dump              dump options help  -h swf               Flash (SWF) options help  -h crypt             ISMA E&A options help  -h format            supported formats help  -h rtp               file streamer help  -h live              BIFS streamer help  -h all               all options are printed  -nodes               lists supported MPEG4 nodes  -node NodeName       gets MPEG4 node syntax and QP info  -xnodes              lists supported X3D nodes  -xnode NodeName      gets X3D node syntax  -snodes              lists supported SVG nodes  -snode NodeName      gets SVG node syntax  -languages           lists supported ISO 639 languages  -quiet                quiet mode  -noprog               disables progress  -v                   verbose mode  -logs                set log tools and levels, formatted as a ':'-separated list of toolX[:toolZ]@levelX  -version             gets build version  -- INPUT             escape option if INPUT starts with - character