[FFmpeg-user] Cutdetection (dynamic threshold) and Fadedetection with ffmpeg
Hello Is it possible to detect cuts with ffmpeg by using a DYNAMIC threshold? Additionally: Is it possible to detect fades? (Blackfades, Crossfades) Best Regards Christoph ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] -timelimit not working.
I'm trying to limit the amount of time my stream runs for but adding -timelimit or -t doesn't seem to do anything. Anyone have any suggestions? ffmpeg -timelimit 30 -r 15 -rtsp_transport tcp -i rtsp:// source.com:557/streaming/channels/0 -an -vcodec copy -f flv rtmp:// 127.0.0.1/live/stream ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] dynamic image overlay
On Thu, Jan 22, 2015 at 10:28 PM, Mark Ambler mwambler-at-yahoo@ffmpeg.org wrote: Hi All,Found this thread on the mailing list from back in 2012. Was it ever implemented? if yes... any command line samples out there? https://ffmpeg.org/pipermail/ffmpeg-user/2012-August/008703.html It says, Is there currently any way to get it to overlay with an image where the image can be updated every so often, during the ffmpeg session? I don't understand what exactly is wanted here. Can you please describe that with a more specific example? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] mpeg start code?
Greetings, I'm looking to get the right name for a hexadecimal number from the output from ffprobe: ffprobe -i the_lego_movie.vob ffprobe version 2.4.3-1 Copyright (c) 2007-2014 the FFmpeg developers built on Nov 5 2014 00:18:23 with gcc 4.9.1 (Debian 4.9.1-14) configuration: --prefix=/usr --extra-version=1 --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 1.100 / 56. 1.100 libavformat56. 4.101 / 56. 4.101 libavdevice56. 0.100 / 56. 0.100 libavfilter 5. 1.100 / 5. 1.100 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc53. 0.100 / 53. 0.100 Input #0, mpeg, from 'the_lego_movie.vob': Duration: 00:43:33.83, start: 0.041811, bitrate: 16818 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x480 [SAR 32:27 DAR 16:9], max. 7500 kb/s, 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc Stream #0:1[0x82]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s Stream #0:2[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s Stream #0:3[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s Stream #0:4[0x83]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s What would be the right name of the hex number in brackets above: 0x80, 0x1e0, etc. PES Stream ID Substream ID Startcode ?? I can't quite find definitive info. Thanks for any help! -m ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] can not clip/trim some files made by ffmpeg same version
After starting with a raw camera file, after I process it by resizing and/or cropping etc, using the h264 codec, When I later try to use that output file as an input file for further processing, (intending to trim the length and starting time) it gives an error and drops the video stream. Two output logs to show how I can reproduce this bug. Watch the beginning and ending tbc and tbn. Step 1, resize: ffmpeg version N-68814-gc6bb651 Copyright (c) 2000-2014 the FFmpeg developers built on Jan 2 2015 12:09:28 with gcc 4.9.1 (GCC) configuration: --enable-gpl --enable-libx264 --disable-doc --disable-htmlpages --disable-podpages --disable-ffserver --disable-network --enable-libfreetype --enable-libfontconfig libavutil 54. 16.100 / 54. 16.100 libavcodec 56. 19.100 / 56. 19.100 libavformat56. 16.102 / 56. 16.102 libavdevice56. 3.100 / 56. 3.100 libavfilter 5. 6.100 / 5. 6.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc53. 3.100 / 53. 3.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument '9'. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument '99'. Reading option '-i' ... matched as input file with argument '20150112_0958_rec_5310.MOV'. Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'h264'. Reading option '-s' ... matched as option 's' (set frame size (WxH or abbreviation)) with argument '960x540'. Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'copy'. Reading option '20150112_0958_rec_5310-h960x540.mov' ... matched as output file. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set logging level) with argument 9. Successfully parsed a group of options. Parsing a group of options: input file 20150112_0958_rec_5310.MOV. Successfully parsed a group of options. Opening an input file: 20150112_0958_rec_5310.MOV. [mov,mp4,m4a,3gp,3g2,mj2 @ 0x93bb9e0] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x93bb9e0] ISO: File Type Major Brand: qt [mov,mp4,m4a,3gp,3g2,mj2 @ 0x93bb9e0] Before avformat_find_stream_info() pos: 147048059 bytes read:83571 seeks:2 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x93bb9e0] All info found [mov,mp4,m4a,3gp,3g2,mj2 @ 0x93bb9e0] After avformat_find_stream_info() pos: 2689024 bytes read:2536703 seeks:4 frames:31 Guessed Channel Layout for Input Stream #0.1 : mono Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '20150112_0958_rec_5310.MOV': Metadata: major_brand : qt minor_version : 0 compatible_brands: qt creation_time : 2015-01-12 09:58:08 original_format : DVR-CD original_format-eng: DVR-CD comment : HDDVR-Mobius comment-eng : HDDVR-Mobius Duration: 00:01:04.00, start: 0.00, bitrate: 18381 kb/s Stream #0:0(eng), 30, 1/3: Video: h264 (High) (avc1 / 0x31637661), yuv420p(left), 1920x1080 (1920x1088), 1/6, 17680 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc (default) Metadata: creation_time : 2015-01-12 09:58:08 handler_name: DataHandler encoder : h264 Stream #0:1(eng), 1, 1/32000: Audio: pcm_s16le (sowt / 0x74776F73), 32000 Hz, 1 channels, s16, 512 kb/s (default) Metadata: creation_time : 2015-01-12 09:58:08 handler_name: DataHandler Successfully opened the file. Parsing a group of options: output file 20150112_0958_rec_5310-h960x540.mov. Applying option c:v (codec name) with argument h264. Applying option s (set frame size (WxH or abbreviation)) with argument 960x540. Applying option c:a (codec name) with argument copy. Successfully parsed a group of options. Opening an output file: 20150112_0958_rec_5310-h960x540.mov. Matched encoder 'libx264' for codec 'h264'. Successfully opened the file. detected 1 logical cores [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'video_size' to value '1920x1080' [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'pix_fmt' to value '0' [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'time_base' to value '1/3' [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'sws_param' to value 'flags=2' [graph 0 input from stream 0:0 @ 0x93bb420] Setting 'frame_rate' to value '30/1' [graph 0 input from stream 0:0 @ 0x93bb420] w:1920 h:1080 pixfmt:yuv420p tb:1/3 fr:30/1 sar:0/1 sws_param:flags=2 [scaler for output stream 0:0 @ 0x93b3920] Setting 'w' to value '960' [scaler for output stream 0:0 @ 0x93b3920] Setting 'h' to value '540' [scaler for output stream 0:0 @ 0x93b3920] Setting 'flags' to value '0x4' [scaler for output stream 0:0 @ 0x93b3920] w:960 h:540 flags:'0x4' interl:0 [format @ 0x93bb640] compat: called with args=[yuv420p|yuvj420p|yuv422p|yuvj422p|yuv444p|yuvj444p|nv12|nv16] [format
[FFmpeg-user] transcoding mp3 to wav
Hi, I tried to transcode a few mp3 files to wav using the command
for f in *.mp3; do
ffmpeg -i $f -ab 1600k -y ${f%mp3}wav
done
it does the conversion, but does not honour the bitrate param.
How do I force the bitrate param for the ourput?
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Re: [FFmpeg-user] transcoding mp3 to wav
On Thu, Jan 22, 2015 at 10:08:35 -0700, jd1008 wrote: it does the conversion, but does not honour the bitrate param. How do I force the bitrate param for the ourput? You didn't show us the output of your ffmpeg command. Anyway, your approach is wrong. The bitrate of a WAV file is defined by its sample format, sample rate, and number of channels (except for non-PCM WAV, which is not selected by default). The default is probably pcm_s16le, which means 16 bits per sample per channel. Therefore you can mathematically influence this with -ac M and -ar N, or by actually selecting the desired sample format. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] transcoding mp3 to wav
On 01/22/2015 10:23 AM, Moritz Barsnick wrote: On Thu, Jan 22, 2015 at 10:08:35 -0700, jd1008 wrote: it does the conversion, but does not honour the bitrate param. How do I force the bitrate param for the ourput? You didn't show us the output of your ffmpeg command. Anyway, your approach is wrong. The bitrate of a WAV file is defined by its sample format, sample rate, and number of channels (except for non-PCM WAV, which is not selected by default). The default is probably pcm_s16le, which means 16 bits per sample per channel. Therefore you can mathematically influence this with -ac M and -ar N, or by actually selecting the desired sample format. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user Sorry!! I did not know that info was needed. Here it is for track1. I tried with the params: -ac 2 -ar 44.1k -ab 1600k but to no avail. -- ffmpeg version N-51556-ge278500 Copyright (c) 2000-2013 the FFmpeg developers built on Apr 4 2013 05:11:43 with gcc 4.6 (Debian 4.6.3-1) configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx libavutil 52. 24.100 / 52. 24.100 libavcodec 55. 2.100 / 55. 2.100 libavformat55. 1.100 / 55. 1.100 libavdevice55. 0.100 / 55. 0.100 libavfilter 3. 49.100 / 3. 49.100 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc52. 2.100 / 52. 2.100 [mp3 @ 0x98b4700] max_analyze_duration 500 reached at 5015510 microseconds Input #0, mp3, from 'trak1.mp3': Metadata: album : none title : track1 genre : instructional artist : me track : 01 date: 2014 Duration: 00:08:54.57, start: 0.00, bitrate: 321 kb/s Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s Stream #0:1: Video: mjpeg, yuvj444p, 600x600 [SAR 100:100 DAR 1:1], 90k tbr, 90k tbn, 90k tbc Metadata: title : comment : Cover (front) Output #0, wav, to 'trak1.wav': Metadata: IPRD: trak1 INAM: trak1 IGNR: Instructional IART: me IPRT: 01 ICRD: 2014 ISFT: Lavf55.1.100 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Stream mapping: Stream #0:0 - #0:0 (mp3 - pcm_s16le) Press [q] to stop, [?] for help size= 15075kB time=00:01:27.53 bitrate=1410.8kbits/s^Msize= 30114kB time=00:02:54.83 bitrate=1411.0kbits/s^Msize= 45162kB time=00:04:22.19 bitrate=1411.1kbits/s^Msize= 60201kB time=00:05:49.49 bitrate=1411.1kbits/s^Msize= 75245kB time=00:07:16.81 bitrate=1411.1kbits/s^Msize= 90257kB time=00:08:43.96 bitrate=1411.1kbits/s^Msize= 92084kB time=00:08:54.56 bitrate=1411.1kbits/s^M video:0kB audio:92084kB subtitle:0 global headers:0kB muxing overhead 0.000320% ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
