手里有一个通过ffmpeg(v0.6.3)转换生成的mp4视频，通过html5的

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'superfly.360p.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 creation_time : 1970-01-01 00:00:00 encoder : Lavf52.64.2 Duration: 00:05:04.83, start: 0.000000, bitrate: 567 kb/s Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 640x360 [PAR 1:1 DAR 16:9], 502 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc Metadata: creation_time : 1970-01-01 00:00:00 Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 61 kb/s Metadata: creation_time : 1970-01-01 00:00:00 [STREAM] index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 codec_type=video codec_time_base=1/48 codec_tag_string=avc1 codec_tag=0x31637661 width=640 height=368 has_b_frames=0 sample_aspect_ratio=1:1 display_aspect_ratio=40:23 pix_fmt=yuv420p r_frame_rate=24/1 avg_frame_rate=24/1 time_base=1/24 start_time=0.000000 duration=304.833333 nb_frames=7316 TAG:creation_time=1970-01-01 00:00:00 TAG:language=und [/STREAM] [STREAM] index=1 codec_name=aac codec_long_name=Advanced Audio Coding codec_type=audio codec_time_base=0/1 codec_tag_string=mp4a codec_tag=0x6134706d sample_rate=44100.000000 channels=2 bits_per_sample=0 r_frame_rate=0/0 avg_frame_rate=0/0 time_base=1/44100 start_time=0.000000 duration=304.785125 nb_frames=13126 TAG:creation_time=1970-01-01 00:00:00 TAG:language=und [/STREAM]