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[Opensvcdecoder-support] Problems in switching down temporal layer
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From: Yuansong Q. <ys...@re...> - 2015-06-10 10:36:10
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Hello,
I compress a few 720p videos using JSVM 9.19.15. Each video has 3
resolutions (720p, 480p, & 240p), 3 Temporal layers (7.5, 15, 30 fps), and
one Quality layer. I am using OpenSVCDecoder 1.12. The mplayer can play the
video normally with the highest layers, i.e. 720p & 30 fps. However, the
play freezes when I switch down the temporal layer to 15 fps or 7.5 fps.
The playback is normal when I switch to different resolutions (with the
highest frame rate, 30fps).
The play command is:
mplayer -fps 30 -vo sdl video.264
I use ; to switch down frame rates.
I tried the same test for different resolution videos:
1) 1080p/480p/240p+7.5/15/30fps, the same problem as above mentioned.
2) 576p/360p/240p+7.5/15/30fps, the same problem
3) 480p/360p/240p+7.5/15/30fps, NO PROBLEM, play perfectly after switch
layers
The video layers are given below:
$ BitStreamExtractorStatic touchdown_pass_720p_480p_240p_570Frames_30FPS.264
JSVM 9.19.15 BitStream Extractor
Contained Layers:
====================
Layer Resolution Framerate Bitrate MinBitrate DTQ
0 432x240 7.5000 139.90 139.90 (0,0,0)
1 432x240 15.0000 184.70 184.70 (0,1,0)
2 432x240 30.0000 232.50 232.50 (0,2,0)
3 864x480 7.5000 766.50 766.50 (1,0,0)
4 864x480 15.0000 902.60 902.60 (1,1,0)
5 864x480 30.0000 1045.90 1045.90 (1,2,0)
6 1280x720 7.5000 1427.30 1427.30 (2,0,0)
7 1280x720 15.0000 1690.00 1690.00 (2,1,0)
8 1280x720 30.0000 1972.00 1972.00 (2,2,0)
$ BitStreamExtractorStatic
touchdown_pass_1080p_480p_240p_570Frames_30FPS.264
JSVM 9.19.15 BitStream Extractor
Contained Layers:
====================
Layer Resolution Framerate Bitrate MinBitrate DTQ
0 432x240 7.5000 139.90 139.90 (0,0,0)
1 432x240 15.0000 184.70 184.70 (0,1,0)
2 432x240 30.0000 232.50 232.50 (0,2,0)
3 864x480 7.5000 758.80 758.80 (1,0,0)
4 864x480 15.0000 891.90 891.90 (1,1,0)
5 864x480 30.0000 1030.10 1030.10 (1,2,0)
6 1920x1088 7.5000 3087.00 3087.00 (2,0,0)
7 1920x1088 15.0000 3621.00 3621.00 (2,1,0)
8 1920x1088 30.0000 4203.00 4203.00 (2,2,0)
$ BitStreamExtractorStatic touchdown_pass_576p_360p_240p_570Frames_30FPS.264
JSVM 9.19.15 BitStream Extractor
Contained Layers:
====================
Layer Resolution Framerate Bitrate MinBitrate DTQ
0 432x240 7.5000 139.90 139.90 (0,0,0)
1 432x240 15.0000 184.70 184.70 (0,1,0)
2 432x240 30.0000 232.50 232.50 (0,2,0)
3 640x368 7.5000 487.50 487.50 (1,0,0)
4 640x368 15.0000 574.70 574.70 (1,1,0)
5 640x368 30.0000 664.80 664.80 (1,2,0)
6 1024x576 7.5000 1012.50 1012.50 (2,0,0)
7 1024x576 15.0000 1201.70 1201.70 (2,1,0)
8 1024x576 30.0000 1402.70 1402.70 (2,2,0)
$ BitStreamExtractorStatic touchdown_pass_480p_360p_240p_570Frames_30FPS.264
JSVM 9.19.15 BitStream Extractor
Contained Layers:
====================
Layer Resolution Framerate Bitrate MinBitrate DTQ
0 432x240 7.5000 139.90 139.90 (0,0,0)
1 432x240 15.0000 184.70 184.70 (0,1,0)
2 432x240 30.0000 232.50 232.50 (0,2,0)
3 640x368 7.5000 485.00 485.00 (1,0,0)
4 640x368 15.0000 570.60 570.60 (1,1,0)
5 640x368 30.0000 658.20 658.20 (1,2,0)
6 864x480 7.5000 746.80 746.80 (2,0,0)
7 864x480 15.0000 882.90 882.90 (2,1,0)
8 864x480 30.0000 1025.30 1025.30 (2,2,0)
Has anyone encountered the problem before? Do you have any suggestions?
Thanks a lot.
Rgs,
Yuansong Qiao
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