Mark Filipak wrote: > When I run this: > > ffprobe -sexagesimal -select_streams v -show_frames -of flat -i > e:\00305.m2ts > > where 00305.m2ts is AVC, it reports such things as this: > > frames.frame.0.pict_type="I"? > > AVC does not have I-frames (or P-frames or B-frames), so, what does it mean?
You mean AVC as in H.264? Of course it does have such picture types (unless you're using an IDR-only profile, of course). There's a fairly good overview on Wikipedia: http://www.videolan.org/developers/x264.html BTW, libx264 even supports things like adaptive B-frame placement. I just looked at the first two GOPs of a H.264 stream (Main profile, level 4), and it looks pretty normal to me: frames.frame.0.pict_type="I" # <-- start of first GOP frames.frame.1.pict_type="B" frames.frame.2.pict_type="B" frames.frame.3.pict_type="P" frames.frame.4.pict_type="B" frames.frame.5.pict_type="B" frames.frame.6.pict_type="P" frames.frame.7.pict_type="B" frames.frame.8.pict_type="B" frames.frame.9.pict_type="P" frames.frame.10.pict_type="B" frames.frame.11.pict_type="B" frames.frame.12.pict_type="P" frames.frame.13.pict_type="B" frames.frame.14.pict_type="B" frames.frame.15.pict_type="P" frames.frame.16.pict_type="B" frames.frame.17.pict_type="B" frames.frame.18.pict_type="P" frames.frame.19.pict_type="B" frames.frame.20.pict_type="B" frames.frame.21.pict_type="P" frames.frame.22.pict_type="B" frames.frame.23.pict_type="P" frames.frame.24.pict_type="I" # <-- start of second GOP frames.frame.25.pict_type="B" frames.frame.26.pict_type="B" frames.frame.27.pict_type="P" frames.frame.28.pict_type="B" frames.frame.29.pict_type="B" frames.frame.30.pict_type="P" frames.frame.31.pict_type="B" frames.frame.32.pict_type="P" frames.frame.33.pict_type="B" frames.frame.34.pict_type="P" frames.frame.35.pict_type="B" frames.frame.36.pict_type="B" frames.frame.37.pict_type="P" frames.frame.38.pict_type="B" frames.frame.39.pict_type="P" frames.frame.40.pict_type="B" frames.frame.41.pict_type="P" frames.frame.42.pict_type="B" frames.frame.43.pict_type="P" frames.frame.44.pict_type="B" frames.frame.45.pict_type="P" frames.frame.46.pict_type="B" frames.frame.47.pict_type="P" frames.frame.48.pict_type="I" Best regards -- Oliver _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
