![]() ![]() ![]() options: cabac=1 ref=3 deblock=1:-6:-6 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1. You can identify whether your params are being passed to x264 by looking at the following, where deblock=1:-6:-6 means deblock is enabled, alpha is -6 and beta is -6. So your command should look like this: ffmpeg -i Fashion.divx -acodec libfaac -vcodec h264 out.mp4. Test cases: $ ffmpeg -i $ -frames:v 100 -c:v libx264 -x264-params:v 'deblock=-6\:-6' -f nut - | ffplay - When transcoding an flv file which has an alpha channel into a video or image file using codecs that support alpha channel (such as h264, or Apple Animation (qtrle), or PNG) the alpha channel is lost and the output video has an opaque background. ![]() Here's a (very old) snippet of an FAQ and a doom9 postĪlthough, if you can't the higher/lower by looking at test frames, it does pose the question as to whether you need it, or think you need it. ![]()
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