d d d d d d d d d d d d d X| > X- > d d d The legend for each Macroblock can be found very clearly in the source code.
This command will print the type of each macroblock:įfmpeg -threads 1 -debug 'mb_type' -i file.h264 -f null. To save a copy of the video with motion vectors overlaid:įfmpeg -flags2 +export_mvs -I file.h264 -vf codecview=mv=pf+bf+bb output.mp4 To display the motion vectors on a newly opened a window:įfplay -flags2 +export_mvs file.h264 -vf codecview=mv=pf+bf+bb The following commands will help you visualize the motion vectors on top of the original video. 35 adaptive_ref_pic_marking_mode_flag 0 = 0 34 ref_pic_list_modification_flag_l0 0 = 0 33 num_ref_idx_active_override_flag 0 = 0 21 adaptive_ref_pic_marking_mode_flag 0 = 0 20 ref_pic_list_modification_flag_l0 0 = 0 19 num_ref_idx_active_override_flag 0 = 0 In order to display per-nal unit (including separate slices) you may run the following command:įfmpeg -i file.h264 -c copy -bsf:v trace_headers -f null. nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 2 Side_data_type=H.26 User Data Unregistered SEI message In order to display per-frame information you may use the following command.
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