Add keyframe index metadata
Used to facilitate seeking; particularly for HTTP pseudo streaming.
 1. read live streaming or file by sequence
 2. if use add_keyframe_index option, add a mark flag at the position,
    use to insert new context at the last step.
 3. add the keyframes *offset* and *timestamp* into a list
 4. if use add_keyframe_index option, shift the metadata data from
    mark flag offset
 5. insert the keyframes *offset* and *timestamp* from the list by
    sequence
 6. free the list
 7. end.
Add FATE test case;
Reviewed-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Steven Liu <liuqi@gosun.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
		
	
			
		
			
				
	
	
		
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			13 lines
		
	
	
		
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			Plaintext
		
	
	
	
	
	
| ;FFMETADATA1
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| hasVideo=true
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| hasKeyframes=true
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| hasAudio=false
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| hasMetadata=true
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| canSeekToEnd=true
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| datasize=629776
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| videosize=629381
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| audiosize=0
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| lasttimestamp=20
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| lastkeyframetimestamp=19
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| lastkeyframelocation=597963
 |