[ VMS ] v16.10.3, Playback looks choppy when fast forward above x4 - 20170531
Posted: May 26th, 2017, 3:01 pm
Issue:
v16.10.3, Playback looks choppy when fast forward above x4
Explanation:
A. The camera's GOP setting is too high. For example, when GOP = 5, it means 1 key frame per 5 sec.
B. Here is the list of GV-VMS V16.10.3.0 playback rules.
1. Under 1x speed, 36 divisions or above layout only plays key frames.
2. Under 2x speed, 24 divisions or above layout only plays key frames.
3. Under 4x speed, 16 divisions or above layout only plays key frames.
4. Under 8x or above speed, all divisions layout only plays key frames.
5. Single channel playback does not get affected by the rule above.
C. Here is the list of GV-VMS V17.1~17.4.5B playback rules.
1. Under 1x speed, 32 divisions or above layout only plays key frames.
2. Under 2x speed, 24 divisions or above layout only plays key frames.
3. Under 4x speed, 16 divisions or above layout only plays key frames.
4. Under 8x or above speed, all divisions layout only plays key frames.
5. Single channel playback does not get affected by the rule above.
Therefore, the video playback looks choppy when A + B/C happened. To avoid this situation, try to lower GOP.
Reference:
[ UVS - 201705187002 ] VMS v16.10.3, Local Playback is choppy when fast forward above x4
v16.10.3, Playback looks choppy when fast forward above x4
Explanation:
A. The camera's GOP setting is too high. For example, when GOP = 5, it means 1 key frame per 5 sec.
B. Here is the list of GV-VMS V16.10.3.0 playback rules.
1. Under 1x speed, 36 divisions or above layout only plays key frames.
2. Under 2x speed, 24 divisions or above layout only plays key frames.
3. Under 4x speed, 16 divisions or above layout only plays key frames.
4. Under 8x or above speed, all divisions layout only plays key frames.
5. Single channel playback does not get affected by the rule above.
C. Here is the list of GV-VMS V17.1~17.4.5B playback rules.
1. Under 1x speed, 32 divisions or above layout only plays key frames.
2. Under 2x speed, 24 divisions or above layout only plays key frames.
3. Under 4x speed, 16 divisions or above layout only plays key frames.
4. Under 8x or above speed, all divisions layout only plays key frames.
5. Single channel playback does not get affected by the rule above.
Therefore, the video playback looks choppy when A + B/C happened. To avoid this situation, try to lower GOP.
Reference:
[ UVS - 201705187002 ] VMS v16.10.3, Local Playback is choppy when fast forward above x4