Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
-Original Message- From: ffmpeg-user-boun...@ffmpeg.org [mailto:ffmpeg-user- boun...@ffmpeg.org] On Behalf Of fernando.takeshi Sent: 17 September 2014 01:39 To: ffmpeg-user@ffmpeg.org Subject: [FFmpeg-user] Mux encoded video data directly into mp4 files Hello, I've been searching for ways to create .mp4 files directly from saved raw video data. The sources of said data can record frames in the h264, mpeg and mjpeg formats; I end up with files that are basically raw frames of these formats, one after the other. Now, I've tested the command line approach (that I cannot use, unfortunately) and it seems to work for h264 and mpeg files, but not for mjpeg. I need to do this programmatically; so I've followed ffmpeg's muxing example and many others I found online (stackoverflow, etc) and can't seem to find any consistency in how to (or what would be the correct way to) accomplish this. Right now, I do not have any sample code working - the muxing example generates a divide by zero error on av_write_frame (I tried messing with DTS/PTS but nothing seems to work). Other examples all yielded different results, but none worked. So, what I ask is basically: given a file consisting of raw frames (h264, mpeg or mjpeg), how do I go about creating a playable video mp4 file? What would be the correct way? Specifically speaking, which functions should I be calling and in what order as to make the code work for those three formats? I hope you get the help you need, but failing that, consider making a (custom) debug build of ffmpeg to trace the sequence in the successful command line multiplexing you mention. Some sample data can be found at https://drive.google.com/file/d/0B8XSlN4yAH72T1R0Ti1zaGViNmM/edit?usp =sharing Thanks in advance! -- View this message in context: http://ffmpeg- users.933282.n4.nabble.com/Mux-encoded-video-data-directly-into-mp4- files-tp4667372.html Sent from the FFmpeg-users mailing list archive at Nabble.com. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
fernando.takeshi fernando.takeshi at seventh.com.br writes: I've tested the command line approach and it seems to work for h264 and mpeg files, but not for mjpeg. Could you elaborate? How can I reproduce this? Right now, I do not have any sample code working - the muxing example generates a divide by zero error on av_write_frame Seems like a perfect start for a question on the libav-user mailing list: http://ffmpeg.org/mailman/listinfo/libav-user Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] How to delete digital silence?
On 9/16/14, Bart Gopnik bart.gop...@gmail.com wrote: I've created test file in sound editor (https://goo.gl/IJY9t6): 1 second (44 100 samples) of silence + 1 second (44 100 samples) of simple sine 1kHz waveform + 1 second (44 100 samples) of silence = total 3 seconds (132 300 samples), and save it as input.wav After it, I use FFMPEG to remove silence using the following command line: ffmpeg -i input.wav -af silenceremove=1:0.1:0:1:0.1:0 output.wav The resulting file, output.wav, contains total 44 981 samples: 44 099 samples of simple sine 1kHz waveform (the first sample of simple sine 1kHz waveform is truncated) + 882 samples of silence. Instead of expected total 1 second (44 100 samples) of simple sine 1kHz waveform. WAIDW? To trim silence at end you could use sox and its silence and reverse effect. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] AVStream.codec.time_base deprecated when using -f ssegment
Claudiu Rad jazzman at misalpina.net writes: i am trying to generate a HLS stream from a standard MP4 file. the muxer generates a pair of warnings for each output .ts file. This is ticket #3741 iirc. why is this? You haven't sent a patch afaict. shouldn't this be fixed? All bugs should be fixed but imo the currently open regressions (wrt to the output files) are much more important than spam on the console (but see above). Please remember that time is the only limiting factor in FFmpeg development and please continue to report all issues! Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] AVStream.codec.time_base deprecated when using -f ssegment
On 9/17/2014 10:41 AM, Carl Eugen Hoyos wrote: i am trying to generate a HLS stream from a standard MP4 file. the muxer generates a pair of warnings for each output .ts file. This is ticket #3741 iirc. now true, but mainly the ticket wasn't about this. i didn't check it lately. shouldn't this be fixed? All bugs should be fixed but imo the currently open regressions (wrt to the output files) are much more important than spam on the console (but see above). my main question here is if this can be safely ignored. i only quickly checked the output in a few cases and it seemed fine but how sure can i be? this is important because i am preparing to convert a massive amount of data (~5TB and ~10.000hours) to HLS and i can't just check everything if it is ok, i will only scan the ffmpeg logs afterwards. also the originals will be deleted in short time so you can imagine the harm that can be done if something is wrong and it gets discovered too late. so, can someone confirm that this warning can really be safely ignored? Please remember that time is the only limiting factor in FFmpeg development and please continue to report all issues! sure, will do. -- Claudiu ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] -strict unofficial error
hello
when using “-strict unofficial” with the latest ffmpeg versions i get the
following error:
###
[NULL @ 0x3857a60] [Eval @ 0x7fffb730b4b0] Undefined constant or missing '(' in
'unofficial'
[NULL @ 0x3857a60] Unable to parse option value unofficial
[NULL @ 0x3857a60] Error setting option strict to value unofficial.
###
the same error doesn’t occur with “-strict experimental” or “-strict normal”.
I know you can replace these strings with integers but i couldn’t find an exact
description in the documentation.
I only know that “experimental” can be replaced with “-2”.
Any help will be appreciated!
thanks
y
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[FFmpeg-user] (mpeg2) how to set audio delay relative to video as 0 ?
Hi everybody, I transcode other video to mpg2 video as following command: ffmpeg -i other video -c:v mpeg2video -b:v 8000k -c:a mp2 -y 0.mpg / / d:\ffmpeg -i orig.mpg -c:v mpeg2video -c:a mp2 -y 0.mpg ffmpeg version N-63439-g96470ca Copyright (c) 2000-2014 the FFmpeg developers built on May 25 2014 22:01:51 with gcc 4.8.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab - -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 86.100 / 52. 86.100 libavcodec 55. 65.100 / 55. 65.100 libavformat55. 41.100 / 55. 41.100 libavdevice55. 13.101 / 55. 13.101 libavfilter 4. 5.100 / 4. 5.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 / 0. 19.100 libpostproc52. 3.100 / 52. 3.100 Input #0, mpeg, from 'orig.mpg': Duration: 00:00:15.00, start: 0.269611, bitrate: 8661 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 16:1 5 DAR 4:3], max. 8000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s [mpeg @ 04677680] VBV buffer size not set, using default size of 130KB If you want the mpeg file to be compliant to some specification Like DVD, VCD or others, make sure you set the correct buffer size Output #0, mpeg, to '0.mpg': Metadata: encoder : Lavf55.41.100 Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 16:15 DAR 4:3], q=2-31 , 200 kb/s, 25 fps, 90k tbn, 25 tbc Metadata: encoder : Lavc55.65.100 mpeg2video Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s Metadata: encoder : Lavc55.65.100 mp2 Stream mapping: Stream #0:0 - #0:0 (mpeg2video - mpeg2video) Stream #0:1 - #0:1 (mp2 - mp2) Press [q] to stop, [?] for help frame= 137 fps=0.0 q=31.0 size= 588kB time=00:00:05.40 bitrate= 892.0kbits/ frame= 282 fps=282 q=31.0 size=1286kB time=00:00:11.22 bitrate= 938.8kbits/ frame= 375 fps=290 q=31.0 Lsize=1744kB time=00:00:15.01 bitrate= 951.6kbits /s video:1023kB audio:704kB subtitle:0kB other streams:0kB global headers:0kB muxin g overhead: 0.974431% / / I use MediaInfo.exe to view the ouput mpg, and get the result: / / General Complete name: D:\1.project\1.HDPlayer\audiolevel\FM_MIRROR\loop\0.mpg Format : MPEG-PS File size: 1.70 MiB Duration : 15s 24ms Overall bit rate mode: Variable Overall bit rate : 951 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP: No Format settings, Matrix : Default Format settings, GOP : Variable Duration : 14s 960ms Bit rate mode: Variable Bit rate : 548 Kbps Width: 720 pixels Height : 576 pixels Display aspect ratio : 4:3 Frame rate : 25.000 fps Standard : PAL Color space : YUV Chroma subsampling : 4:2:0 Bit depth: 8 bits Scan type: Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.053 Time code of first frame : 00:00:00:00 Time code source
Re: [FFmpeg-user] (mpeg2) how to set audio delay relative to video as 0 ?
On date Wednesday 2014-09-17 19:44:02 +0800, linxs wrote: Hi everybody, I transcode other video to mpg2 video as following command: ffmpeg -i other video -c:v mpeg2video -b:v 8000k -c:a mp2 -y 0.mpg / / d:\ffmpeg -i orig.mpg -c:v mpeg2video -c:a mp2 -y 0.mpg ffmpeg version N-63439-g96470ca Copyright (c) 2000-2014 the FFmpeg developers [...] I use MediaInfo.exe to view the ouput mpg, and get the result: / / General Complete name: D:\1.project\1.HDPlayer\audiolevel\FM_MIRROR\loop\0.mpg Format : MPEG-PS File size: 1.70 MiB Duration : 15s 24ms Overall bit rate mode: Variable Overall bit rate : 951 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP: No Format settings, Matrix : Default Format settings, GOP : Variable Duration : 14s 960ms Bit rate mode: Variable Bit rate : 548 Kbps Width: 720 pixels Height : 576 pixels Display aspect ratio : 4:3 Frame rate : 25.000 fps Standard : PAL Color space : YUV Chroma subsampling : 4:2:0 Bit depth: 8 bits Scan type: Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.053 Time code of first frame : 00:00:00:00 Time code source : Group of pictures header Stream size : 1 001 KiB (57%) Audio ID : 192 (0xC0) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 15s 24ms Bit rate mode: Constant Bit rate : 384 Kbps Channel(s) : 2 channels Sampling rate: 48.0 KHz Compression mode : Lossy Delay relative to video : -10ms !!! how to make this delay relative to video value to 0ms? What values do you get with ffprobe? Did you try with the asetpts filter? This will require audio transcoding though. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] -strict unofficial error
On Wed, Sep 17, 2014 at 13:51:44 +, Carl Eugen Hoyos wrote: Moritz Barsnick barsnick at gmx.net writes: It seems that was removed in 2011: No, inofficial was removed. Well, d'uh. My bad. These are the definitions from libavcodec/avcodec.h: #define FF_COMPLIANCE_VERY_STRICT 2 /// Strictly conform to an older more strict version of the spec or reference software. #define FF_COMPLIANCE_STRICT1 /// Strictly conform to all the things in the spec no matter what consequences. #define FF_COMPLIANCE_NORMAL0 #define FF_COMPLIANCE_UNOFFICIAL -1 /// Allow unofficial extensions #define FF_COMPLIANCE_EXPERIMENTAL -2 /// Allow nonstandardized experimental things. Could it be that there's a difference in option parsing for -strict for format vs. codec options? (Too much guessing on my side.) ypatios, could you please show us your full command and complete uncut console output? Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] -strict unofficial error
ypatios ypatios at gmail.com writes:
[Eval at 0x7fffb730b4b0] Undefined constant
or missing '(' in 'unofficial'
This is a regression since d858ee71
Workaround is to use -strict -1
Thank you for the report, Carl Eugen
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Re: [FFmpeg-user] ffprobe: Not using full CPU, regardless of -threads parameter
On 09/17/2014 04:27 PM, tim nicholson wrote: Try using a simpler ffprobe command and compare like with like. Your example includes a complex filter chain and not all filters multi-thread afaik. That's a good point. I'll try that. Thanks! Pb ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] ffprobe: Not using full CPU, regardless of -threads parameter
Peter B. pb at das-werkstatt.com writes: Yes, they are absolutely different use cases. I just brought the ffmpeg-framemd5 example to illustrate that it's neither the source file's encoding, nor the disk that might limit ffprobe. But you are claiming that there is an ffprobe problem. This is certainly not impossible but running the same command with ffmpeg should (??) show you that there is no issue with ffprobe but that you are using a filter that does not support multi-threading and is significantly slower than decoding. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
I try to test. $ ffmpeg -i mjpeg.hex -vcodec copy mjpeg.mp4 ffmpeg version N-66318-g85f2c01 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 18 2014 00:12:17 with gcc 4.9.1 (GCC) configuration: --enable-gpl --enable-version3 --enable-avisynth --enable-fontconfig --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcaca --enable-libcdio --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libvidstab --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libilbc --enable-libxavs --enable-opengl --enable-libwebp --enable-avresample --enable-w32threads --extra-ldflags=-static --extra-cflags='-march=i686 -mtune=generic -mfpmath=sse -msse' --optflags='-O2 -finline-functions' libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 1.100 / 56. 1.100 libavformat56. 4.102 / 56. 4.102 libavdevice56. 0.100 / 56. 0.100 libavfilter 5. 1.101 / 5. 1.101 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 [mjpeg @ 005372c0] Format mjpeg detected only with low score of 25, misdetection possible! Input #0, mjpeg, from 'mjpeg.hex': Duration: N/A, bitrate: N/A Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg), 1280x720 [SAR 1:1 DAR 16:9 ], 25 tbr, 1200k tbn, 25 tbc Output #0, mp4, to 'mjpeg.mp4': Metadata: encoder : Lavf56.4.102 Stream #0:0: Video: mjpeg (l[0][0][0] / 0x006C), yuvj420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1200k tbn, 1200k tbc Stream mapping: Stream #0:0 - #0:0 (copy) Press [q] to stop, [?] for help frame= 163 fps=0.0 q=-1.0 Lsize= 13551kB time=00:00:06.48 bitrate=17130.7kbit s/s video:13549kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.010840% ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
einguste einguste at gmail.com writes: I try to test. Thank you! Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] V4L2 recording results in invalid data buffer still owned errors.
Louis Rossmann l.a.rossmann at gmail.com writes: So that messed up configure line is not Gentoo's fault, but all mine. :( Then please reconfigure with ./configure --enable-gpl and add the external libraries you need, do NOT add any --disable-* flags and do NOT add any --extra-cflags / --extra-ldflags except those needed for library detection. Your current executable is intentionally slow. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user I've done everything I can with my executable, however, the problem persists. If I run a recording, it works. if I stop the recording, there is little I can do short of reboot the system to record a second video using the V4L2 device. I've tried on an Ubuntu desktop and a Gentoo laptop. Do you have any suggestions? Kernel 3.14 was a quick fix but sadly that did not last long. :( I decided to try on a different computer with a fresh install and the problem persists. I can only record once before having to reboot. I have two of the same device. What is interesting is, even after I have run out of recording tries with one device, I can try again with the next and it works - but of course, only for one time. The only other software I can find that allows me to simultaneously capture raw video from an HDMI source is $1000 on Windows 7. If someone can fix V4L/ffmpeg so it works properly with these devices, I'd be willing to match the $1k in donations. I absolutely love how no frills this is - no crap, no tons of menus, no junk I don't need, just type a line tell it how to encode and it gives me files I can easily edit. I love it... I just hate rebooting my machine for each take. I have an SSD, but still, cmon! :) ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
Ok, it seems that a newer build of ffmpeg can understand and mux the mjpeg raw frames file. Still, that doesn't help me much, since I need to do this programatically... thank you for your time though! -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Mux-encoded-video-data-directly-into-mp4-files-tp4667372p4667397.html Sent from the FFmpeg-users mailing list archive at Nabble.com. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Mux encoded video data directly into mp4 files
fernando.takeshi fernando.takeshi at seventh.com.br writes: Ok, it seems that a newer build of ffmpeg can understand and mux the mjpeg raw frames file. It works with older versions if the file has a .mjpeg suffix or if you force the file format. Still, that doesn't help me much, since I need to do this programatically... Why didn't you sent an email to the relevant mailing list yet (as I suggested)? Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] How to record audio and video from FaceTime HD Camera in OSX
Hi Moritz,
Thanks for the information. I finally applied the patches. Although I could not
apply through git because the latest ffmpeg version I downloaded did not seem
to match with the patches in the email and it failed. So I had to manually sync
the patch file to the source file and I complied sucessfully. The patched
version works for all basics scenarios but did not fix the underlying issue.
It now shows the inbuilt microphone which is an improvement, but the microphone
is showing as error.
$ ffmpeg -f avfoundation -list_devices true -i
Output:
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100
libavformat56. 4.102 / 56. 4.102
libavdevice56. 0.100 / 56. 0.100
libavfilter 5. 1.101 / 5. 1.101
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
[AVFoundation input device @ 0x7ff6c0c14de0] AVFoundation video devices:
[AVFoundation input device @ 0x7ff6c0c14de0] [0] FaceTime HD Camera
[AVFoundation input device @ 0x7ff6c0c14de0] AVFoundation audio devices:
[AVFoundation input device @ 0x7ff6c0c14de0] [0] Built-in Microphone
: Input/output error
Can you or anyone help me on this? Please note that I have applied all the 5
patches in the thread given below.
https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2014-April/156866.html
These patches only modified one file avfoundation.m. I have attached the
patched avfoundation.m for reference purpose.
avfoundation.m
Description: Binary data
Warm Regards
Jay
On Sep 8, 2014, at 3:52 AM, Moritz Barsnick barsn...@gmx.net wrote:
Hi Jay,
[oops, sent too early]
On Sun, Sep 07, 2014 at 12:01:25 -0400, Jay Muthialu wrote:
I went through all the patches specified in the link but I am not
sure how to apply the patches. Could you please guide me on how to
apply the patches and also what would be command I would have to use
to take audio input ? Please note that I originally installed ffmpeg
using Homebrew.
You would need to compile yourself. Instructions are here:
https://trac.ffmpeg.org/wiki/CompilationGuide/MacOSX
I don't know how Homebrew works. To apply the patches, you would need
to grab the patch files from the emails, i.e. sections like this:
diff --git a/libavdevice/avfoundation.m b/libavdevice/avfoundation.m
index 3622be0..2ac1b3c 100644
--- a/libavdevice/avfoundation.m
+++ b/libavdevice/avfoundation.m
at at -191,7 +191,7 at at static int
avf_read_header(AVFormatContext *s)
goto fail;
}
} else {
-video_device = [AVCaptureDevice
- defaultDeviceWithMediaType:AVMediaTypeMuxed];
+video_device = [AVCaptureDevice
- defaultDeviceWithMediaType:AVMediaTypeVideo];
}
// Video capture device not found, looking for AVMediaTypeVideo
--
1.8.3.2
(I don't know where to get the proper ASCII versions of these patches)
and apply each of them with
patch -p1 -i patchfilename
before the configure of make stage. As said, I have no idea how to
interrupt homebrew stages.
Moritz
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[FFmpeg-user] ffmpeg read from UDP/Port
Hi all, I am using Windows 7 64 bit, and I downloaded the 64 bit version of ffmpeg: ffmpeg-20140916-git-b76d613-win64-static.7z I have spent the entire day experimenting with ffmpeg today but I haven't quite figure out if ffmpeg is the right solution to my problem yet, so I would like to get some opinions. I am receiving H264 encoded packets through RTP with sample rate of 90,000, and I need to record these packets. The file format doesn't really matter at this point. Currently, I have a server sending the H264 packets to port 50002 of my machine (192.168.1.200), so I run the following ffmpeg command on my machine: ffmpeg -i udp://192.168.1.200:50002 -f mp4 hello.mp4 Then the following shows ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 15 2014 22:11:04 with gcc 4.8.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable- libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc -- enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib 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 libswscale 3. 0.100 / 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc53. 0.100 / 53. 0.100 The server starts sending video packets, and nothing happens on the command prompt with the ffmpeg command. The server stops sending video packets, and nothing happens still (I waited for at least 5 minutes), so I pressed Ctrl+C, then I see this udp://192.168.1.200:50002: Invalid data found when processing input Received signal 2: terminating. am I using ffmpeg correctly? and are the H264 packets I am receiving not supported? I have looked around and did not see any debug log generated by ffmpeg, so I don't really know where else to look. If it is necessary, I can provide a packet capture with the H264 packets. Thanks in advance. AL ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] V4L2 recording results in invalid data buffer still owned errors.
Louis Rossmann l.a.rossmann at gmail.com writes:
Louis Rossmann l.a.rossmann at gmail.com writes:
So that messed up configure line is not Gentoo's
fault, but all mine. :(
Then please reconfigure with ./configure --enable-gpl
and add the external libraries you need, do NOT add any
--disable-* flags and do NOT add any --extra-cflags /
--extra-ldflags except those needed for library detection.
Your current executable is intentionally slow.
Carl Eugen
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I've done everything I can with my executable, however, the problem
persists.
If I run a recording, it works. if I stop the recording, there is
little I
can do short of reboot the system to record a second video using the
V4L2
device. I've tried on an Ubuntu desktop and a Gentoo laptop. Do you
have
any suggestions? Kernel 3.14 was a quick fix but sadly that did not
last
long. :(
I decided to try on a different computer with a fresh install and the
problem persists. I can only record once before having to reboot.
I have two of the same device. What is interesting is, even after I have
run out of recording tries with one device, I can try again with the next
and it works - but of course, only for one time.
The only other software I can find that allows me to simultaneously
capture
raw video from an HDMI source is $1000 on Windows 7. If someone can fix
V4L/ffmpeg so it works properly with these devices, I'd be willing to
match
the $1k in donations. I absolutely love how no frills this is - no crap,
no
tons of menus, no junk I don't need, just type a line tell it how to
encode
and it gives me files I can easily edit. I love it... I just hate
rebooting
my machine for each take. I have an SSD, but still, cmon! :)
So, I've now tried using VLC's command line (cvlc) to record from v4l2, and
it works flawlessly. Not a single failure; no reboots required.
So for the time being, I'm giving up on ffmpeg and will use VLC. As of
yesterday's ffmpeg build, the problem still exists.
FYI, here's the VLC command line I tested with. There are additional
parameters to play with of course, but this was enough to prove to me that
it works:
cvlc v4l2:// :v4l2-vdev=/dev/video0 --sout
'#transcode{venc=x264}:standard{access=file,mux=avi,dst=/home/myusername/V
ideos/test.avi}'
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Re: [FFmpeg-user] (mpeg2) how to set audio delay relative to video as 0 ?
D:\ffprobe 0.mpg ffprobe version N-63439-g96470ca Copyright (c) 2007-2014 the FFmpeg developers built on May 25 2014 22:01:51 with gcc 4.8.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab - -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-decklink --enable-zlib libavutil 52. 86.100 / 52. 86.100 libavcodec 55. 65.100 / 55. 65.100 libavformat55. 41.100 / 55. 41.100 libavdevice55. 13.101 / 55. 13.101 libavfilter 4. 5.100 / 4. 5.100 libswscale 2. 6.100 / 2. 6.100 libswresample 0. 19.100 / 0. 19.100 libpostproc52. 3.100 / 52. 3.100 Input #0, mpeg, from '0.mpg': Duration: 00:00:14.98, start: 0.529978, bitrate: 953 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 16:1 5 DAR 4:3], max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s I added -af asetpts=PTS+0/TB to the options of ffmpeg. The audio delay relative to video of output mpg is -10ms too. nothing changed. 2014-09-17 20:10 GMT+08:00 Stefano Sabatini stefa...@gmail.com: On date Wednesday 2014-09-17 19:44:02 +0800, linxs wrote: Hi everybody, I transcode other video to mpg2 video as following command: ffmpeg -i other video -c:v mpeg2video -b:v 8000k -c:a mp2 -y 0.mpg / / d:\ffmpeg -i orig.mpg -c:v mpeg2video -c:a mp2 -y 0.mpg ffmpeg version N-63439-g96470ca Copyright (c) 2000-2014 the FFmpeg developers [...] I use MediaInfo.exe to view the ouput mpg, and get the result: / / General Complete name: D:\1.project\1.HDPlayer\audiolevel\FM_MIRROR\loop\0.mpg Format : MPEG-PS File size: 1.70 MiB Duration : 15s 24ms Overall bit rate mode: Variable Overall bit rate : 951 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP: No Format settings, Matrix : Default Format settings, GOP : Variable Duration : 14s 960ms Bit rate mode: Variable Bit rate : 548 Kbps Width: 720 pixels Height : 576 pixels Display aspect ratio : 4:3 Frame rate : 25.000 fps Standard : PAL Color space : YUV Chroma subsampling : 4:2:0 Bit depth: 8 bits Scan type: Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.053 Time code of first frame : 00:00:00:00 Time code source : Group of pictures header Stream size : 1 001 KiB (57%) Audio ID : 192 (0xC0) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 15s 24ms Bit rate mode: Constant Bit rate : 384 Kbps Channel(s) : 2 channels Sampling rate: 48.0 KHz Compression mode : Lossy Delay relative to video : -10ms !!! how to make this delay relative to video value to 0ms? What values do
