April 2018 - ffmpeg-user - lists.ffmpeg.org

Ffmpeg in copy-ing mode uses too much RAM
by Jakub Vojáček 23 Apr '18

23 Apr '18

Hello, we have multicast that has multiple video bitrates and audios in it. We are trying to copy out some snapshot of the stream using -copy. It is 10 minutes and according to benchmark parameter, the maximum amount of memory uses 1.6GB which is a lot, considering that it should just read the multicast and save it into output file. Please check this pastebing - https://pastebin.com/rVXhKivd. It shows the ffmpeg command at the beginning and the the bottom, there is memory used. Is there a way to lower the amount of RAM used? Thank you Jakub

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Fastest way to get keyframe indices from MOV files?
by Stuart Bruce 23 Apr '18

23 Apr '18

Indirectly related to my previous enquiry... Programatically I want to use FFprobe get a list of the frame numbers (numbers preferred, times if necessary) of keyframes (I frames without the P frames) in a MOV file. At present I'm using the arguments: -select_streams v -show_frames "M:\ProcessTests\Timecode.mov" -of csv -show_entries frame=pkt_pts_time,pict_type but for this 30-minute video (available at http://www.twentypenguins.co.uk/misc/ffpmeg_tests/Timecode.mov ), that process is taking around 20-30 seconds to provide the lengthy result of approximately 45,000 CSV lines of frame info, which I then parse in my Windows app to find the line indices of every frame with an 'I' at the end. In principle, should there be a faster way to just get the keyframe / I frame numbers (or times), which doesn't require FFprobe to output over 1500 lines of data per minute of video for parsing afterwards? Thanks Stuart -- Stuart Bruce - stuart(a)stuartbruce.co.uk - www.stuartbruce.co.uk

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Re: [FFmpeg-user] Problem with ffmpeg and an onvif camera
by Denis 23 Apr '18

23 Apr '18

Perfect. Using vlc with a Debian 9 machine I can watch an onvif video camera. Using the latest ffmpeg from git I can't watch the same video camera. To test the video camera with ffmpeg I'm using this command line: ./ffmpeg -loglevel 99 -i rtsp://admin:admin@172.30.153.33:554/1 a.avi The output it very big and if I send to the list an email with all the output, the email will be cutted. So you can have a look at the entire output here: http://www.denisgottardello.it/ffmpeg.txt A part of the output is here: [h264 @ 0x562201567a40] nal_unit_type: 7, nal_ref_idc: 3 [h264 @ 0x562201567a40] nal_unit_type: 8, nal_ref_idc: 3 [rtsp @ 0x562201564400] stream 0: start_time: -102481911520608.625 duration: -102481911520608.625 [rtsp @ 0x562201564400] stream 1: start_time: -1152921504606847.000 duration: -1152921504606847.000 [rtsp @ 0x562201564400] format: start_time: -9223372036854.775 duration: -9223372036854.775 bitrate=64 kb/s [rtsp @ 0x562201564400] Could not find codec parameters for stream 0 (Video: h264, 1 reference frame, none(left)): unspecified size Consider increasing the value for the 'analyzeduration' and 'probesize' options Guessed Channel Layout for Input Stream #0.1 : mono Input #0, rtsp, from 'rtsp://admin:admin@172.30.153.33:554/1': Metadata: title : h264.mp4 Duration: N/A, bitrate: 64 kb/s Stream #0:0, 0, 1/90000: Video: h264, 1 reference frame, none(left), 90k tbr, 90k tbn, 180k tbc Stream #0:1, 0, 1/8000: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s Successfully opened the file. Parsing a group of options: output url a.avi. Successfully parsed a group of options. Opening an output file: a.avi. [file @ 0x5622015bbd40] Setting default whitelist 'file,crypto' Successfully opened the file. Stream mapping: Stream #0:1 -> #0:0 (pcm_mulaw (native) -> ac3 (native)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) [rtsp @ 0x562201564400] UDP timeout, retrying with TCP [rtsp @ 0x562201564400] Sending: PAUSE rtsp://172.30.153.33/1 RTSP/1.0 CSeq: 7 User-Agent: Lavf58.11.101 Session: 16184365 Regards. In data mercoledì 18 aprile 2018 19:28:43 CEST, hai scritto: > 2018-04-18 10:05 GMT+02:00, Denis <info(a)denisgottardello.it>: > > Sorry if I'm writing directly to you but for me the situation with the > > customer is very critical. > > If you need support, please send the command line you tested > including the complete, uncut console output to the user mailing > list. > > Carl Eugen +39.347.4070897 www.labcsp.com[1] www.denisgottardello.it[2] GMT+1 Skype: mrdebug -------- [1] http://www.labcsp.com [2] http://www.denisgottardello.it

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FFprobe sometimes freezing instead of exiting?
by Stuart Bruce 23 Apr '18

23 Apr '18

Hello I've got a Windows Visual Studio .NET application which, amongst other things, uses FFprobe to get some basic information about the stream content of movie files. My application starts FFprobe as a thread with arguments, reads the StandardOutput until FFprobe exists, then works with the data that FFprobe has provided. Sometimes, FFprobe will complete finish the requested task of showing all the stream info, but then it will 'freeze' instead of exiting immediately- it can sit there for a variable amount of time, sometimes a few seconds, sometimes several minutes, neither busy nor exiting, just sort of stuck. Since my application is waiting for FFprobe to exit, users are left waiting (sometimes impatiently...) So my question/problem is this: is there a way I can stop FFprobe from sometimes 'sticking' like this, and ensuring that once the analysis is done, it closes nice and promptly? More details: The arguments being called to FFprobe are simply this: -show_streams "E:\Tests\2018-04-21\Timecode.mov" I have pasted FFprobe's console output below. Because it's the last line, I'm guessing that it's something to do with "Unsupported codec with id 0 for input stream 2". In the case of the media I'm testing with, stream 2 is a timecode stream (sample stream output is also pasted below). I've also pasted below what is (I think) the relevant bit of my VB.NET code in case it's pertinent at all. If it helps, you can download the basic MOV that I created in Avid Media Composer for testing purposes from here: http://www.twentypenguins.co.uk/misc/ffpmeg_tests/Timecode.mov and you can see a screengrab of the 'stuck' FFprobe console window here: http://www.twentypenguins.co.uk/misc/ffpmeg_tests/F Fprobe-freeze-issue_21Apr18.JPG Any comments or suggestions about what I should do to get ffprobe.exe to always exit promptly would be much appreciated. Thanks Stuart Console output: ffprobe version N-90796-ge5ba5fab49 Copyright (c) 2007-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 15.100 / 56. 15.100 libavcodec 58. 19.100 / 58. 19.100 libavformat 58. 13.100 / 58. 13.100 libavdevice 58. 4.100 / 58. 4.100 libavfilter 7. 18.100 / 7. 18.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'E:\Aardman EditReader tests\2018-04-21\Timecode.mov': Metadata: creation_time : 2018-04-21T12:23:13.000000Z timecode : 01:00:00:00 Duration: 00:30:00.00, start: 0.000000, bitrate: 875 kb/s Stream #0:0(eng): Audio: pcm_s16be (twos / 0x736F7774), 44100 Hz, mono, s16, 705 kb/s (default) Metadata: creation_time : 2018-04-21T12:23:13.000000Z handler_name : Apple Alias Data Handler Stream #0:1(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 640x360, 160 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (default) Metadata: creation_time : 2018-04-21T12:23:14.000000Z handler_name : Apple Alias Data Handler encoder : H.264 Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default) Metadata: creation_time : 2018-04-21T12:47:58.000000Z handler_name : Apple Alias Data Handler timecode : 01:00:00:00 Unsupported codec with id 0 for input stream 2 .NET code that calls FFprobe and gets the results, (where probeProcess is a System.Diagnostics.Process that has already been pointed to ffprobe.exe): probeProcess.StartInfo.Arguments = "-show_streams -select_streams v " + Chr(34) + filePath + Chr(34) probeProcess.StartInfo.UseShellExecute = False probeProcess.StartInfo.RedirectStandardOutput = True probeProcess.StartInfo.RedirectStandardError = True probeProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden probeProcess.StartInfo.CreateNoWindow = True probeProcess.Start() Dim probeStreamReader As StreamReader = probeProcess.StandardOutput streamData = probeStreamReader.ReadToEnd myStreamReader.Close() Stream data that is logged before FFprobe 'freezes': [STREAM] index=0 codec_name=pcm_s16be codec_long_name=PCM signed 16-bit big-endian profile=unknown codec_type=audio codec_time_base=1/44100 codec_tag_string=twos codec_tag=0x736f7774 sample_fmt=s16 sample_rate=44100 channels=1 channel_layout=mono bits_per_sample=16 id=N/A r_frame_rate=0/0 avg_frame_rate=0/0 time_base=1/44100 start_pts=0 start_time=0.000000 duration_ts=79380000 duration=1800.000000 bit_rate=705600 max_bit_rate=N/A bits_per_raw_sample=N/A nb_frames=79380000 nb_read_frames=N/A nb_read_packets=N/A DISPOSITION:default=1 DISPOSITION:dub=0 DISPOSITION:original=0 DISPOSITION:comment=0 DISPOSITION:lyrics=0 DISPOSITION:karaoke=0 DISPOSITION:forced=0 DISPOSITION:hearing_impaired=0 DISPOSITION:visual_impaired=0 DISPOSITION:clean_effects=0 DISPOSITION:attached_pic=0 DISPOSITION:timed_thumbnails=0 TAG:creation_time=2018-04-21T12:23:13.000000Z TAG:language=eng TAG:handler_name=Apple Alias Data Handler [/STREAM] [STREAM] index=1 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=Main codec_type=video codec_time_base=1/50 codec_tag_string=avc1 codec_tag=0x31637661 width=640 height=360 coded_width=640 coded_height=368 has_b_frames=1 sample_aspect_ratio=N/A display_aspect_ratio=N/A pix_fmt=yuv420p level=31 color_range=tv color_space=smpte170m color_transfer=bt709 color_primaries=smpte170m chroma_location=left field_order=unknown timecode=N/A refs=1 is_avc=true nal_length_size=4 id=N/A r_frame_rate=25/1 avg_frame_rate=25/1 time_base=1/25000 start_pts=0 start_time=0.000000 duration_ts=45000000 duration=1800.000000 bit_rate=160529 max_bit_rate=N/A bits_per_raw_sample=8 nb_frames=45000 nb_read_frames=N/A nb_read_packets=N/A DISPOSITION:default=1 DISPOSITION:dub=0 DISPOSITION:original=0 DISPOSITION:comment=0 DISPOSITION:lyrics=0 DISPOSITION:karaoke=0 DISPOSITION:forced=0 DISPOSITION:hearing_impaired=0 DISPOSITION:visual_impaired=0 DISPOSITION:clean_effects=0 DISPOSITION:attached_pic=0 DISPOSITION:timed_thumbnails=0 TAG:creation_time=2018-04-21T12:23:14.000000Z TAG:language=eng TAG:handler_name=Apple Alias Data Handler TAG:encoder=H.264 [/STREAM] [STREAM] index=2 codec_name=unknown codec_long_name=unknown profile=unknown codec_type=data codec_tag_string=tmcd codec_tag=0x64636d74 id=N/A r_frame_rate=0/0 avg_frame_rate=25/1 time_base=1/600 start_pts=0 start_time=0.000000 duration_ts=1080000 duration=1800.000000 bit_rate=N/A max_bit_rate=N/A bits_per_raw_sample=N/A nb_frames=1 nb_read_frames=N/A nb_read_packets=N/A DISPOSITION:default=1 DISPOSITION:dub=0 DISPOSITION:original=0 DISPOSITION:comment=0 DISPOSITION:lyrics=0 DISPOSITION:karaoke=0 DISPOSITION:forced=0 DISPOSITION:hearing_impaired=0 DISPOSITION:visual_impaired=0 DISPOSITION:clean_effects=0 DISPOSITION:attached_pic=0 DISPOSITION:timed_thumbnails=0 TAG:creation_time=2018-04-21T12:47:58.000000Z TAG:language=eng TAG:handler_name=Apple Alias Data Handler TAG:timecode=01:00:00:00 [/STREAM] -- Stuart Bruce - stuart(a)stuartbruce.co.uk - www.stuartbruce.co.uk

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Hap_q_alpha is it possible?
by Alex Ramos 23 Apr '18

23 Apr '18

Hello, I think I'm missing something. ffmpeg -i source.mov -vcodec hap -format hap target.mov OK ffmpeg -i source.mov -vcodec hap -format hap_alpha target.mov OK ffmpeg -i source.mov -vcodec hap -format hap_q target.mov OK This is not working, what's switch for Hap Q Alpha ? ffmpeg -i source.mov -vcodec hap -format hap_q_alpha target.mov I'm on win7 Thanks Alex -- Sent from: http://www.ffmpeg-archive.org/

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Live streaming with dynamic overlay
by Nam Giang 22 Apr '18

22 Apr '18

Hi there, I'm using ffmpeg to live stream to Youtube. I'm wondering if I can do dynamic overlay. For example, when my stream is live and the world is watching, at some points I want to pop up some pictures or add some sound effects to my live stream. I wonder if there is any command that I can use to add those things into my live stream? Thanks

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Unknown option "--disable-ffserver"
by Reindl Harald 22 Apr '18

22 Apr '18

could you guys make a decision if you spit out ffserver or not support it any longer? that's at least the third time when building snapshot-packages that i either get a ffserver binary or the option to not build it is not supported and ends in a hard configure error

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Ticket 3707 inquiry
by Douglas Marsh 22 Apr '18

22 Apr '18

Found this ticket (3707) https://trac.ffmpeg.org/ticket/3707 Wondering if more sample files are needed to help out? I created DNxHR (DNxHD varient) with alpha output using Fusion 9 under Linux and come to conclusion that the decoder doesn't support the alpha channel output at this time. --Doug (dx0s) (Figured not but the developer list at this point)

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Reporting GCC 7.3.0 compiler-warnings on FFmpeg git (955fa23)
by Reino Wijnsma 21 Apr '18

21 Apr '18

Hello ffmpeg-user(/devel), I've just compiled a fresh build from git (955fa23) (on Windows using Cygwin, MinGW and GCC). It compiled without errors, but I did get quite some warnings! I thought I'd share it with you. See the attached 'ffmpeg_build.log'. -- Reino

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Video Playing in Back & forth using FFMPEG
by Mansi joshi 21 Apr '18

21 Apr '18

Hello, can you please give me solution for how to play video back& forth looping.like forward+reverse,reverse+forwrad looping. how to solve this problem using FFMPEG. Thank you.

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