Hi, I just realized that all movies that I converted down to 720p using h264 codec don't play neither on my TV nor my Gigablue Quad box, but work fine with mplayer/mpv/xine on my Linux system. On the TV/gigablue the video stream freezes after 2-3 seconds while the audio continues to play. It doesn't matter what kind of input codec I have.
I could track the problem down to a small test video. The input file is in h264 format already, and after converting the "ffmpeg -i" output looks absolutely the same, apart from the bitrate. So the TV/Gigablue are able to play h264 streams, but when I convert it with ffmpeg sth. must be changed that I can't figure out (and so don't know how to avoid it). Below is the output of the conversion command. The two files can be downloaded from https://www.bio.ifi.lmu.de/~steiner/test_works.mkv (18 MB) and https://www.bio.ifi.lmu.de/~steiner/test_fails.mkv (8.9MB) in case you want to take a look at them. Do you have any idea what could go wrong here? What I could change in converting to avoid that little "whatever" that disturbs the (obviously older) codecs on my TV and the Gigablye box? What kind of problem could cause the video stream to freeze? cu, Frank ffmpeg -i test_works.mkv -c:v libx264 -preset veryslow -crf 20 -tune filme -c:a copy -c:s copy test_fails.mkv ffmpeg version 3.2.6 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 4.8 (SUSE Linux) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-gcc-switches -fstack-protector -O2 -Wall -D_FORTIFY_SOURCE=2 -funwind-tables -fasynchronous-unwind-tables -g' --optflags='-fmessage-length=0 -grecord-gcc-switches -fstack-protector -O2 -Wall -D_FORTIFY_SOURCE=2 -funwind-tables -fasynchronous-unwind-tables -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-gpl --disable-openssl --enable-avresample --enable-libcdio --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-libfreetype --enable-libgsm --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-netcdf --enable-vaapi --enable-vdpau --enable-libfdk_aac --enable-nonfree --enable-libmp3lame --enable-libtwolame --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab libavutil 55. 34.101 / 55. 34.101 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.101 / 57. 56.101 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libavresample 3. 1. 0 / 3. 1. 0 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 Input #0, matroska,webm, from 'test_works.mkv': Metadata: ENCODER : Lavf57.56.101 Duration: 00:00:15.19, start: 0.000000, bitrate: 9400 kb/s Chapter #0:0: start 0.000000, end 123.540000 Metadata: title : 00:00:00.000 Chapter #0:1: start 123.540000, end 264.139000 Metadata: title : 00:02:03.540 Chapter #0:2: start 264.139000, end 437.312000 Metadata: title : 00:04:24.139 Chapter #0:3: start 437.312000, end 650.984000 Metadata: title : 00:07:17.312 Chapter #0:4: start 650.984000, end 814.397000 Metadata: title : 00:10:50.984 Chapter #0:5: start 814.397000, end 952.827000 Metadata: title : 00:13:34.397 Chapter #0:6: start 952.827000, end 1144.894000 Metadata: title : 00:15:52.827 Chapter #0:7: start 1144.894000, end 1362.611000 Metadata: title : 00:19:04.894 Chapter #0:8: start 1362.611000, end 1484.191000 Metadata: title : 00:22:42.611 Chapter #0:9: start 1484.191000, end 1604.394000 Metadata: title : 00:24:44.191 Chapter #0:10: start 1604.394000, end 1764.513000 Metadata: title : 00:26:44.394 Chapter #0:11: start 1764.513000, end 1983.773000 Metadata: title : 00:29:24.513 Chapter #0:12: start 1983.773000, end 2098.346000 Metadata: title : 00:33:03.773 Chapter #0:13: start 2098.346000, end 2196.444000 Metadata: title : 00:34:58.346 Chapter #0:14: start 2196.444000, end 2463.336000 Metadata: title : 00:36:36.444 Chapter #0:15: start 2463.336000, end 2755.044000 Metadata: title : 00:41:03.336 Chapter #0:16: start 2755.044000, end 2993.199000 Metadata: title : 00:45:55.044 Chapter #0:17: start 2993.199000, end 3222.344000 Metadata: title : 00:49:53.199 Chapter #0:18: start 3222.344000, end 3549.004000 Metadata: title : 00:53:42.344 Chapter #0:19: start 3549.004000, end 3662.993000 Metadata: title : 00:59:09.004 Chapter #0:20: start 3662.993000, end 3879.876000 Metadata: title : 01:01:02.993 Chapter #0:21: start 3879.876000, end 4014.761000 Metadata: title : 01:04:39.876 Chapter #0:22: start 4014.761000, end 4344.632000 Metadata: title : 01:06:54.761 Chapter #0:23: start 4344.632000, end 4572.902000 Metadata: title : 01:12:24.632 Chapter #0:24: start 4572.902000, end 4740.235000 Metadata: title : 01:16:12.902 Chapter #0:25: start 4740.235000, end 4884.213000 Metadata: title : 01:19:00.235 Chapter #0:26: start 4884.213000, end 5019.765000 Metadata: title : 01:21:24.213 Chapter #0:27: start 5019.765000, end 5387.691000 Metadata: title : 01:23:39.765 Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1920x1044, SAR 1:1 DAR 160:87, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc Metadata: DURATION : 00:00:15.186000000 Stream #0:1(ger): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default) Metadata: title : german dts ENCODER : Lavc57.64.101 ac3 DURATION : 00:00:15.004000000 Stream #0:2(ger): Subtitle: subrip (default) Metadata: title : german forced DURATION : 00:00:00.000000000 [libx264 @ 0x12cdca0] using SAR=1/1 [libx264 @ 0x12cdca0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 0x12cdca0] profile High, level 5.1 [libx264 @ 0x12cdca0] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:-1:-1 analyse=0x3:0x133 me=umh subme=10 psy=1 psy_rd=1.00:0.15 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-3 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=60 rc=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, matroska, to 'test_fails.mkv': Metadata: encoder : Lavf57.56.101 Chapter #0:0: start 0.000000, end 123.540000 Metadata: title : 00:00:00.000 Chapter #0:1: start 123.540000, end 264.139000 Metadata: title : 00:02:03.540 Chapter #0:2: start 264.139000, end 437.312000 Metadata: title : 00:04:24.139 Chapter #0:3: start 437.312000, end 650.984000 Metadata: title : 00:07:17.312 Chapter #0:4: start 650.984000, end 814.397000 Metadata: title : 00:10:50.984 Chapter #0:5: start 814.397000, end 952.827000 Metadata: title : 00:13:34.397 Chapter #0:6: start 952.827000, end 1144.894000 Metadata: title : 00:15:52.827 Chapter #0:7: start 1144.894000, end 1362.611000 Metadata: title : 00:19:04.894 Chapter #0:8: start 1362.611000, end 1484.191000 Metadata: title : 00:22:42.611 Chapter #0:9: start 1484.191000, end 1604.394000 Metadata: title : 00:24:44.191 Chapter #0:10: start 1604.394000, end 1764.513000 Metadata: title : 00:26:44.394 Chapter #0:11: start 1764.513000, end 1983.773000 Metadata: title : 00:29:24.513 Chapter #0:12: start 1983.773000, end 2098.346000 Metadata: title : 00:33:03.773 Chapter #0:13: start 2098.346000, end 2196.444000 Metadata: title : 00:34:58.346 Chapter #0:14: start 2196.444000, end 2463.336000 Metadata: title : 00:36:36.444 Chapter #0:15: start 2463.336000, end 2755.044000 Metadata: title : 00:41:03.336 Chapter #0:16: start 2755.044000, end 2993.199000 Metadata: title : 00:45:55.044 Chapter #0:17: start 2993.199000, end 3222.344000 Metadata: title : 00:49:53.199 Chapter #0:18: start 3222.344000, end 3549.004000 Metadata: title : 00:53:42.344 Chapter #0:19: start 3549.004000, end 3662.993000 Metadata: title : 00:59:09.004 Chapter #0:20: start 3662.993000, end 3879.876000 Metadata: title : 01:01:02.993 Chapter #0:21: start 3879.876000, end 4014.761000 Metadata: title : 01:04:39.876 Chapter #0:22: start 4014.761000, end 4344.632000 Metadata: title : 01:06:54.761 Chapter #0:23: start 4344.632000, end 4572.902000 Metadata: title : 01:12:24.632 Chapter #0:24: start 4572.902000, end 4740.235000 Metadata: title : 01:16:12.902 Chapter #0:25: start 4740.235000, end 4884.213000 Metadata: title : 01:19:00.235 Chapter #0:26: start 4884.213000, end 5019.765000 Metadata: title : 01:21:24.213 Chapter #0:27: start 5019.765000, end 5387.691000 Metadata: title : 01:23:39.765 Stream #0:0(eng): Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1920x1044 [SAR 1:1 DAR 160:87], q=-1--1, 23.98 fps, 1k tbn, 23.98 tbc Metadata: DURATION : 00:00:15.186000000 encoder : Lavc57.64.101 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 Stream #0:1(ger): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), 448 kb/s (default) Metadata: title : german dts ENCODER : Lavc57.64.101 ac3 DURATION : 00:00:15.004000000 Stream #0:2(ger): Subtitle: subrip (default) Metadata: title : german forced DURATION : 00:00:00.000000000 Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (copy) Stream #0:2 -> #0:2 (copy) Press [q] to stop, [?] for help frame= 362 fps=5.5 q=-1.0 Lsize= 9089kB time=00:00:14.97 bitrate=4972.7kbits/s speed=0.229x video:8260kB audio:821kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.097370% [libx264 @ 0x12cdca0] frame I:2 Avg QP:12.62 size:130658 [libx264 @ 0x12cdca0] frame P:100 Avg QP:19.30 size: 49601 [libx264 @ 0x12cdca0] frame B:260 Avg QP:22.38 size: 12446 [libx264 @ 0x12cdca0] consecutive B-frames: 5.0% 8.8% 25.7% 9.9% 2.8% 33.1% 0.0% 2.2% 12.4% [libx264 @ 0x12cdca0] mb I I16..4: 56.5% 28.0% 15.5% [libx264 @ 0x12cdca0] mb P I16..4: 7.5% 18.6% 1.7% P16..4: 37.7% 12.7% 6.7% 0.4% 0.1% skip:14.6% [libx264 @ 0x12cdca0] mb B I16..4: 0.9% 1.2% 0.1% B16..8: 39.1% 4.6% 1.0% direct: 2.4% skip:50.6% L0:39.2% L1:51.0% BI: 9.8% [libx264 @ 0x12cdca0] 8x8 transform intra:62.6% inter:54.7% [libx264 @ 0x12cdca0] direct mvs spatial:96.9% temporal:3.1% [libx264 @ 0x12cdca0] coded y,uvDC,uvAC intra: 33.5% 56.2% 25.1% inter: 8.7% 14.5% 2.0% [libx264 @ 0x12cdca0] i16 v,h,dc,p: 27% 16% 10% 47% [libx264 @ 0x12cdca0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 10% 28% 7% 7% 5% 8% 6% 9% [libx264 @ 0x12cdca0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 17% 13% 9% 10% 7% 10% 7% 12% [libx264 @ 0x12cdca0] i8c dc,h,v,p: 50% 29% 14% 7% [libx264 @ 0x12cdca0] Weighted P-Frames: Y:2.0% UV:2.0% [libx264 @ 0x12cdca0] ref P L0: 62.3% 16.9% 11.0% 3.4% 1.9% 1.3% 1.0% 0.5% 0.4% 0.3% 0.2% 0.2% 0.2% 0.2% 0.2% 0.1% [libx264 @ 0x12cdca0] ref B L0: 88.0% 7.8% 1.9% 0.7% 0.4% 0.3% 0.2% 0.2% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.0% [libx264 @ 0x12cdca0] ref B L1: 98.3% 1.7% [libx264 @ 0x12cdca0] kb/s:4432.25 -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. * _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".