February 2013 - ffmpeg-user - lists.ffmpeg.org

Using -re with -ss to stream a ts file as live in rtmp
by Paulo Flores 18 Mar '13

18 Mar '13

Hi People. My Scenery: I'm using ffmpeg to streaming a local .ts file (in h264) to Wowza Server using RTMP protocol as realtime, using -re parameter. In some cases because the internet connection for example the ffmpeg lost connection with Wowza and stops to stream, in this case I need to continue the stream at same file time it is stopped. Now the problem: To start ffmpeg in same position I'm using the parameter -ss to set start time but I'm using too -re parameter to simulate the live broadcast and in this case the seek to start time delay the same time of "start time" to do. How I can do the seek in file instantly and to the live in real time? Thanks, Paulo

3 4

prores4444 to dpx: colourshift & translation
by ArnoB 14 Mar '13

14 Mar '13

Hello! I'm trying to convert a prores4444 quicktime with gamma 2.2 to a dpx sequence with the following command: % ffmpeg -i prores4444g2.2_v01.mov prores.%02d.dpx In the resulting DPX sequence I have the following errors: -the DPXs are tagged as being sRGB. manually switching my program's reader to 2.2 makes them look ok; -there is a colourshift of around 120°. My prores file contains a colourwheel so it's easy to spot. green becomes blue, red becomes green and blue becomes red; -also there's a translation in the X axis of +277 pixels. the missing part is wrapped around and visible on the other side: prores: dpx: full terminal output: % ffmpeg -i prores4444g2.2_v01.mov prores.%02d.dpx ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers built on Feb 20 2013 18:53:55 with gcc 4.2.1 (GCC) (Apple Inc. build 5666) (dot 3) configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-runtime-cpudetect --enable-gray --enable-avresample --enable-x11grab --enable-vda --enable-vdpau --enable-bzlib --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-openssl --enable-zlib libavutil 52. 13.100 / 52. 13.100 libavcodec 54. 86.100 / 54. 86.100 libavformat 54. 59.106 / 54. 59.106 libavdevice 54. 3.102 / 54. 3.102 libavfilter 3. 32.100 / 3. 32.100 libswscale 2. 1.103 / 2. 1.103 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'prores4444g2.2_v01.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt creation_time : 2013-02-18 22:21:14 Duration: 00:00:00.40, start: 0.000000, bitrate: 121378 kb/s Stream #0:0(eng): Video: prores (ap4h / 0x68347061), yuv444p10le, 1920x1080, 121360 kb/s, SAR 1000:1000 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc Metadata: creation_time : 2013-02-18 22:21:14 handler_name : Apple Alias Data Handler Output #0, image2, to 'prores.%02d.dpx': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt encoder : Lavf54.59.106 Stream #0:0(eng): Video: dpx, rgb48be, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc Metadata: creation_time : 2013-02-18 22:21:14 handler_name : Apple Alias Data Handler Stream mapping: Stream #0:0 -> #0:0 (prores -> dpx) Press [q] to stop, [?] for help frame= 10 fps=2.5 q=0.0 Lsize=N/A time=00:00:00.40 bitrate=N/A video:121516kB audio:0kB subtitle:0 global headers:0kB muxing overhead -100.000018% Is this a known problem or am I missing some parts in the manual? thanks in advance, Arno

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ffmpeg with damaged dv from tape capture
by Dave Rice 09 Mar '13

09 Mar '13

Hi all, I am capturing many DV tapes to dv files with dvgrab and then use ffmpeg to rewrap dv to mov. [1] I'm also ingesting the entire tapes from beginning to end and typically the first frames of a tape will include a higher than usual amount of damage (audio dropouts, video error concealment, etc) and this makes the rewrapping from dv to mov fail, miss audio tracks, or cause loss of sync. Here is the command I would like to use: ffmpeg -i dv_tape_capture.dv -map 0 -c copy dv_tape_capture.mov and here is a sample file that depicts the issue: http://dericed.com/samples/dv_tape_capture.dv Here is an ffmpeg -i output of the file: ffmpeg -i dv_tape_capture.dv ffmpeg version 1.1.git Copyright (c) 2000-2013 the FFmpeg developers built on Feb 23 2013 20:08:23 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay --enable-libopenjpeg --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1/include/openjpeg-1.5 ' libavutil 52. 17.103 / 52. 17.103 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.100 / 54. 63.100 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 39.101 / 3. 39.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 [dv @ 0x7fd49b82b400] Detected timecode is invalid [dvvideo @ 0x7fd49b813000] AC EOB marker is absent pos=64 Last message repeated 1 times [dvvideo @ 0x7fd49b813000] AC EOB marker is absent pos=65 [ ... trimmed ... ] [dvvideo @ 0x7fd49b813000] AC EOB marker is absent pos=71 [dvvideo @ 0x7fd49b813000] AC EOB marker is absent pos=66 [dv @ 0x7fd49b82b400] Estimating duration from bitrate, this may be inaccurate Input #0, dv, from 'dv_tape_capture.dv': Duration: 00:00:00.33, start: 0.000000, bitrate: 28771 kb/s Stream #0:0: Video: dvvideo, yuv411p, 720x480, 28771 kb/s, SAR 8:9 DAR 4:3, 29.97 tbr, 29.97 tbn, 29.97 tbc At least one output file must be specified Only the video is detected, although there is audio in the dv data once past the first few broken frames. Within the first 7 or 8 frames about 50% of the DIF blocks use video error concealment STA flags and audio errors. I grepped out the audio DIF blocks of the first frame as placed them in hex here as a sample: http://gist.github.com/dericed/8f0288f5133384b4fb6a Without recognizing the audio in the first frames then no audio is copied if I try to use: ffmpeg -i dv_tape_capture.dv -map 0 -c copy dv_tape_capture.mov. Since I can see the 9th frame and on has no video error concealment or audio errors. I then tried to use probesize to have ffmpeg read the stream further to detect the audio. Here I tried -probesize 1200000 since 1200000 bytes is the size of 10 ntsc dv frames. ffmpeg -probesize 1200000 -i dv_tape_capture.dv -c copy -map 0 dv_tape_capture.mov ffmpeg version 1.1.git Copyright (c) 2000-2013 the FFmpeg developers built on Feb 23 2013 20:08:23 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay --enable-libopenjpeg --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1/include/openjpeg-1.5 ' libavutil 52. 17.103 / 52. 17.103 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.100 / 54. 63.100 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 39.101 / 3. 39.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 [dv @ 0x7fbf69036e00] Detected timecode is invalid [dvvideo @ 0x7fbf69013000] AC EOB marker is absent pos=64 Last message repeated 1 times [dvvideo @ 0x7fbf69013000] AC EOB marker is absent pos=65 [ ... trimmed ... ] [dvvideo @ 0x7fbf69013000] AC EOB marker is absent pos=66 [dv @ 0x7fbf69036e00] Estimating duration from bitrate, this may be inaccurate Input #0, dv, from 'dv_tape_capture.dv': Duration: 00:00:00.33, start: 0.000000, bitrate: 28771 kb/s Stream #0:0: Video: dvvideo, yuv411p, 720x480, 28771 kb/s, SAR 8:9 DAR 4:3, 29.97 tbr, 29.97 tbn, 29.97 tbc Output #0, mov, to 'dv_tape_capture.mov': Metadata: encoder : Lavf54.63.100 Stream #0:0: Video: dvvideo (dvcp / 0x70637664), yuv411p, 720x480 [SAR 8:9 DAR 4:3], q=2-31, 28771 kb/s, 30k tbn, 29.97 tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help [dv @ 0x7fbf69036e00] New audio stream 0:1 at pos:960000 and DTS:0s dv_tape_capture.dv: Input/output error frame= 10 fps=0.0 q=-1.0 Lsize= 1173kB time=00:00:00.33 bitrate=28790.8kbits/s video:1172kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.068000% Still no audio listed in the stream mapping, but I now see the line: [dv @ 0x7fbf69036e00] New audio stream 0:1 at pos:960000 and DTS:0s (and actually I see with line without -probesize as well), but the new audio stream doesn't become mapped. I can use dvanalyzer to detect the frame number of where the audio errors first cease and use tail to pipe the dv stream from that point onward to ffmpeg, like this: tail -c +960001 dv_tape_capture.dv | ffmpeg -i - ffmpeg version N-50177-g6f77122 Copyright (c) 2000-2013 the FFmpeg developers built on Feb 22 2013 13:31:03 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1) configuration: --enable-gpl --enable-nonfree --enable-libx264 --enable-libfaac libavutil 52. 17.102 / 52. 17.102 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.100 / 54. 63.100 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 39.100 / 3. 39.100 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 [dv @ 0x2395560] Estimating duration from bitrate, this may be inaccurate Input #0, dv, from 'pipe:': Duration: N/A, start: 0.000000, bitrate: 28771 kb/s Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 8:9 DAR 4:3], 28771 kb/s, 29.97 tbr, 29.97 tbn, 29.97 tbc Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s At least one output file must be specified but I'd like to identify a cleaner way to copy both audio and video from dv to mov. I can't seem to find a way to map an audio stream that isn't detected in the first frame but exists later in the stream. Not sure if this is an enhancement request or I'm overlooking an option. Advice please. Thanks, Dave Rice [1] I know dvgrab can output mov but ffmpeg does a better job with this task: copying dv timecode to mov timecode and better handling of 4 channel audio in dv.

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XVID-Encoding with ffmpeg
by llarevo＠gmx.net 09 Mar '13

09 Mar '13

Hello, I would like to migrate from mencoder to ffmpeg, but I can't find sufficient information how to "translate" the parameters for encoding with xvid from the mencoder commandline to a sufficient ffmpeg commandline. The xvidenc-configuration in mencoder is -xvidencopts pass=1:profile=dxnhtpal:(no)greyscale:me_quality=6:max_bframes=1:noqpel:nogmc:(no)cartoon:quant_type=mpeg:trellis:(no)interlacing:chroma_me:chroma_opt:vhq=4 The most important part for me is profile=dxhtnpal because this setting ensures a maximum bitrate over 3 sec not over 8 MBit/s, and a avaerage bitrate not higher than around 4,8 MBit/s (cf. http://www.mplayerhq.hu/DOCS/HTML/de/menc-feat-xvid.html) How can I set the parameters above for encoding with libxvid in ffmpeg? Where can I find information about the xvid-Parameters? What are comparable parameters for the build-in mpeg4-codec? Thanks in advance! -- Felix

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Passing metadata from flv ?
by Orlando Rivera 05 Mar '13

05 Mar '13

I need to pass custom flv metadata thru ffmpeg. what I am doing is injecting my own timestamp in flv and converting old nellymoser audio to aac but I lose metadata on other side (this is for live stream coming and going to FMS/Wowza). I was thinking new ffmpeg 1.1 could do this (other than adding metadata on command line) but so far no luck. I know injecting metadata into flv is/was common. I would think passing this metadata thru to other format (n my case aac/h264) would be a common need. I think just converting nellymoser to aac and leaving the rest in flv or f4v warper would do it (and let Wowza do the start?). help, Thanks orlando

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File does not play correctly in ffplay
by Massimo Battistel 04 Mar '13

04 Mar '13

Hello, You can download file from here: http://www.datafilehost.com/download-992eeba1.html The file does not play correctly (video seems scrambled, audio is ok) and ffplay does not show any errors. Command line used: ffplay "CAS_sigla CASSANO.avi" Output: ffplay version N-49069-gc74d465 Copyright (c) 2003-2013 the FFmpeg developers built on Jan 20 2013 23:46:49 with gcc 4.7.2 (GCC) configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib --enable-filter=frei0r libavutil 52. 15.100 / 52. 15.100 libavcodec 54. 89.100 / 54. 89.100 libavformat 54. 61.101 / 54. 61.101 libavdevice 54. 3.102 / 54. 3.102 libavfilter 3. 32.101 / 3. 32.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, avi, from 'CAS_sigla CASSANO.avi': Duration: 00:00:22.24, start: 0.000000, bitrate: 30341 kb/s Stream #0:0: Video: dvvideo (CDVC / 0x43564443), yuv411p, 720x480 [SAR 8:9 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 29.97 tbc Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s Frame changed from size:0x0 to size:720x480 Thanks, Max

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RTMP Issue in running on CentOS 6
by Wunder, Greg P CTR (US) 28 Feb '13

28 Feb '13

I'm attempting to push a MJPEG live feed from a camera to RTMP, but running into issues. Any ideas on what I am doing wrong? ffmpeg -v debug -i "http://myuser:mypass@myremoteip/mjpg/video.mjpg" -rtbufsize 10000 -vcodec libx264 -preset medium -b:v 1000k -minrate 1000k -maxrate 1000k -bufsize 1835k -f flv "rtmp://myip/live" ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers built on Mar 20 2012 04:34:50 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libdirac --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --disable-stripping libavutil 51. 35.100 / 51. 35.100 libavcodec 53. 61.100 / 53. 61.100 libavformat 53. 32.100 / 53. 32.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 61.100 / 2. 61.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 6.100 / 0. 6.100 libpostproc 52. 0.100 / 52. 0.100 [mjpeg @ 0x797c00] Format mjpeg probed with size=2048 and score=50 [mjpeg @ 0x79fe60] err{or,}_recognition separate: 1; 1 [mjpeg @ 0x79fe60] err{or,}_recognition combined: 1; 10001 [mjpeg @ 0x79fe60] Unsupported bit depth: 0 [mjpeg @ 0x79fe60] marker=d8 avail_size_in_buf=17674 [mjpeg @ 0x79fe60] marker parser used 0 bytes (0 bits) [mjpeg @ 0x79fe60] marker=fe avail_size_in_buf=17672 [mjpeg @ 0x79fe60] marker parser used 15 bytes (120 bits) [mjpeg @ 0x79fe60] marker=fe avail_size_in_buf=17655 [mjpeg @ 0x79fe60] marker parser used 15 bytes (120 bits) [mjpeg @ 0x79fe60] marker=db avail_size_in_buf=17638 [mjpeg @ 0x79fe60] index=0 [mjpeg @ 0x79fe60] qscale[0]: 4 [mjpeg @ 0x79fe60] marker parser used 67 bytes (536 bits) [mjpeg @ 0x79fe60] marker=db avail_size_in_buf=17569 [mjpeg @ 0x79fe60] index=1 [mjpeg @ 0x79fe60] qscale[1]: 8 [mjpeg @ 0x79fe60] marker parser used 67 bytes (536 bits) [mjpeg @ 0x79fe60] marker=c0 avail_size_in_buf=17500 [mjpeg @ 0x79fe60] sof0: picture: 704x480 [mjpeg @ 0x79fe60] component 0 2:1 id: 0 quant:0 [mjpeg @ 0x79fe60] component 1 1:1 id: 1 quant:1 [mjpeg @ 0x79fe60] component 2 1:1 id: 2 quant:1 [mjpeg @ 0x79fe60] pix fmt id 21111100 [mjpeg @ 0x79fe60] marker parser used 17 bytes (136 bits) [mjpeg @ 0x79fe60] marker=c4 avail_size_in_buf=17481 [mjpeg @ 0x79fe60] class=0 index=0 nb_codes=12 [mjpeg @ 0x79fe60] marker parser used 31 bytes (248 bits) [mjpeg @ 0x79fe60] marker=c4 avail_size_in_buf=17448 [mjpeg @ 0x79fe60] class=1 index=0 nb_codes=251 [mjpeg @ 0x79fe60] marker parser used 181 bytes (1448 bits) [mjpeg @ 0x79fe60] marker=c4 avail_size_in_buf=17265 [mjpeg @ 0x79fe60] class=0 index=1 nb_codes=12 [mjpeg @ 0x79fe60] marker parser used 31 bytes (248 bits) [mjpeg @ 0x79fe60] marker=c4 avail_size_in_buf=17232 [mjpeg @ 0x79fe60] class=1 index=1 nb_codes=251 [mjpeg @ 0x79fe60] marker parser used 181 bytes (1448 bits) [mjpeg @ 0x79fe60] escaping removed 122 bytes [mjpeg @ 0x79fe60] marker=da avail_size_in_buf=17049 [mjpeg @ 0x79fe60] component: 0 [mjpeg @ 0x79fe60] component: 1 [mjpeg @ 0x79fe60] component: 2 [mjpeg @ 0x79fe60] marker parser used 16926 bytes (135408 bits) [mjpeg @ 0x79fe60] marker=d9 avail_size_in_buf=67 [mjpeg @ 0x79fe60] mjpeg decode frame unused 67 bytes [mjpeg @ 0x797c00] max_analyze_duration 5000000 reached at 5000000 [mjpeg @ 0x797c00] Estimating duration from bitrate, this may be inaccurate Input #0, mjpeg, from 'http://myname:mypass@myremoteip/mjpg/video.mjpg': Duration: N/A, bitrate: N/A Stream #0:0, 127, 1/1200000: Video: mjpeg, yuvj422p, 704x480, 1/25, 25 fps, 25 tbr, 1200k tbn, 25 tbc Parsing... Parsed protocol: 0 Parsed host : myip Parsed app : live RTMP_Connect0, failed to connect socket. 111 (Connection refused) rtmp://myip/live: Operation not permitted

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dnxhd
by Obendorfer Focusfox 28 Feb '13

28 Feb '13

Hello, Is it possible to make OPAtom MXF container with dnxhd codec for Avid? Thanks, Focusfox

2 2

convert MP4 to TS preserving PTS (timestamp) info?
by Tom Sheffler 28 Feb '13

28 Feb '13

I have an application that creates a series of .mp4 files from a continuous stream. For display in an HLS player, I wish to convert each of the .mp4 files into a .ts file. I notice that when I do this, the resulting .ts files always begin at pts = 126000 pts_time = 1.4000 I've used 'ffprobe -show_packets' on both the input and the output to examine the PTS and PTS_TIME. The conversion command looks like this: ffmpeg -i file1.mp4 -vcodec copy -acodec copy -f mpegts file1. It seems that there may be no easy way to preserve the PTS information, but I thought I would ask here. Thanks, Tom

2 1

Getting the RTP packet header
by XUE MINGQIANG 28 Feb '13

28 Feb '13

Hi all, I am looking for a way of using ffmpeg to receive a RTSP stream, then read the RTP header of each received packet, and also extract the frames from the stream. By following the Dranger's tutorial, I know how to do the second task: grabbing the AVPackets and forming AVFrame. The problem is how can I use ffmpeg to read the corresponding RTP header of AVPackets? Thank you. Regards, Mingqiang

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