On Wed, 7 Jul 2021 09:02:47 -0700, Carl Zwanzig <c...@tuunq.com> wrote:
>On 7/7/2021 8:48 AM, Bo Berglund wrote: >> But now I saw a different error I also want to check for, this is when the >> stream semingly works fine but the video has frozen. > >Does that mean youtube continues to send duplicate frames (which are >received w/o error) or that no frames are received at all? The latter could >be noticed by watching the process network i/o (no received packets = no >received stream). What happens is that the stream continues unabated but there is only a blue triangle on the screen. I downladed such a video and cut it down in size to about 3 minutes (bluearrow.mp4) and ran the test on that local video just to see what would happen. Here is the complete result including my test of the exit code of ffmpeg: ---------------- $ ffmpeg -i bluearrow.mp4 -vf "freezedetect=n=0.01:d=5" -map 0:v:0 -f null - ffmpeg version 4.3.2-0york0~18.04 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04) configuration: --prefix=/usr --extra-version='0york0~18.04' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libzimg --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bluearrow.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.45.100 Duration: 00:03:10.01, start: 0.000000, bitrate: 145 kb/s Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 854x480 [SAR 1:1 DAR 427:240], 9 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default) Metadata: handler_name : SoundHandler Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native)) Press [q] to stop, [?] for help Output #0, null, to 'pipe:': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.45.100 Stream #0:0(und): Video: wrapped_avframe, yuv420p, 854x480 [SAR 1:1 DAR 427:240], q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc58.91.100 wrapped_avframe [freezedetect @ 0x55ce112ce980] lavfi.freezedetect.freeze_start: 0 frame= 5700 fps=940 q=-0.0 Lsize=N/A time=00:03:10.00 bitrate=N/A speed=31.3x video:2984kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown $ echo $? 0 ----------------------------------- Notice that the exit code was 0 ($?) even though the video was frozen regarding the image. So now at least ffmpeg did something (while doing so it displayed something like 30x indicating it did the processing at 30 times normal speed. Yet it did not output a finding of "frozen" or similar. How is this filter supposed to output a result and what does that result look like? I do not want another video, just a verdict that it is frozen or not. -- Bo Berglund Developer in Sweden _______________________________________________ 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".