Re: [FFmpeg-user] Retrieve duration of an m2v >MPEG>2 elementary stream file

2023-03-02 Thread Robert Krüger
On Wed, Mar 1, 2023 at 4:07 PM Ferdi Scholten wrote: > Hi, > > if I invoke ffmpeg on an M2V MPEG-2 elementary stream, I get "N/A" for > the > > duration. I guess this is because this file doesn't contain a header that > > contains the duration. Is it possible to force ffmpeg to parse the entire

[FFmpeg-user] Retrieve duration of an m2v >MPEG>2 elementary stream file

2023-03-01 Thread Robert Krüger
Hi, if I invoke ffmpeg on an M2V MPEG-2 elementary stream, I get "N/A" for the duration. I guess this is because this file doesn't contain a header that contains the duration. Is it possible to force ffmpeg to parse the entire file to obtain the duration? Full command line and output: ffmpeg -i

Re: [FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

2020-09-14 Thread Robert Krüger
On Mon, Sep 14, 2020 at 9:53 AM Robert Krüger wrote: > > > On Sat, Sep 12, 2020 at 3:43 PM Carl Eugen Hoyos > wrote: > >> Am Mi., 9. Sept. 2020 um 17:18 Uhr schrieb Robert Krüger >> : >> > >> > Hi, >> > >> > I have a secur

Re: [FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

2020-09-14 Thread Robert Krüger
On Sat, Sep 12, 2020 at 3:43 PM Carl Eugen Hoyos wrote: > Am Mi., 9. Sept. 2020 um 17:18 Uhr schrieb Robert Krüger > : > > > > Hi, > > > > I have a security camera file that gives me decoding errors which are > very > > likely the reason for several ma

Re: [FFmpeg-user] rav1e encoding only using one core

2020-09-14 Thread Robert Krüger
On Sat, Sep 12, 2020 at 3:48 PM Carl Eugen Hoyos wrote: > Am Fr., 11. Sept. 2020 um 15:48 Uhr schrieb Robert Krüger > : > > > I'm playing around with rav1e and noticed in my first test that only one > > core is used of the 8 (16 virtual) I have. I tried with and without

Re: [FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

2020-09-11 Thread Robert Krüger
On Fri, Sep 11, 2020 at 9:47 AM Carl Eugen Hoyos wrote: > > > > Am 09.09.2020 um 17:18 schrieb Robert Krüger >: > > > > I have a security camera file that gives me decoding errors which are > very > > likely the reason for several macroblocks being broke

[FFmpeg-user] rav1e encoding only using one core

2020-09-11 Thread Robert Krüger
Hi, I'm playing around with rav1e and noticed in my first test that only one core is used of the 8 (16 virtual) I have. I tried with and without -threads setting. Since most other codecs behave this way I was expecting it to use as many cores as possible if not constrained by the command line. I

[FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

2020-09-09 Thread Robert Krüger
Hi, I have a security camera file that gives me decoding errors which are very likely the reason for several macroblocks being broken in the resulting video (by far not all, you can still recognize the motive). Are there any command line flags I can try to fix this or shall I submit a trac

[FFmpeg-user] Encode metadata into jpg and png

2020-03-24 Thread Robert Krüger
Hi, is there a way to encode any arbitrary metadata into jpg or png files using ffmpeg? I am looking for a way to "mark" files as coming from a certain source. I don't care what kind of metadata it would be in, e.g. EXIF, IPTC or whatever. Any arbitrary string or number would work. Thanks,

Re: [FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-20 Thread Robert Krüger
On Tue, Dec 18, 2018 at 11:40 PM Carl Eugen Hoyos wrote: > 2018-12-18 21:49 GMT+01:00, Robert Krüger : > > On Fri, Dec 14, 2018 at 5:28 PM Carl Eugen Hoyos > wrote: > > > >> 2018-12-14 17:19 GMT+01:00, Robert Krüger : > >> > On Fri, Dec 14, 2018

Re: [FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-18 Thread Robert Krüger
On Fri, Dec 14, 2018 at 5:31 PM Carl Zwanzig wrote: > On 12/14/2018 8:19 AM, Robert Krüger wrote: > > Just a comparison: This approach gives me the duration information for a > > 180 minute file in 1.8 seconds while mediainfo does it in 0.25 seconds > > (being exact while f

Re: [FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-18 Thread Robert Krüger
On Fri, Dec 14, 2018 at 5:28 PM Carl Eugen Hoyos wrote: > 2018-12-14 17:19 GMT+01:00, Robert Krüger : > > On Fri, Dec 14, 2018 at 3:03 AM Carl Eugen Hoyos > wrote: > > > >> 2018-12-13 17:10 GMT+01:00, Robert Krüger : > >> > >> > is there a way to

Re: [FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-14 Thread Robert Krüger
On Fri, Dec 14, 2018 at 3:03 AM Carl Eugen Hoyos wrote: > 2018-12-13 17:10 GMT+01:00, Robert Krüger : > > > is there a way to get the exact duration of a raw mpeg1 file using the > > ffmpeg command line? For testing I created a 30 minute test file using > > ffmpeg (

Re: [FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-13 Thread Robert Krüger
Hi again, On Thu, Dec 13, 2018 at 6:01 PM Robert Krüger wrote: > Hi Carl, > > On Thu, Dec 13, 2018 at 5:31 PM Carl Zwanzig wrote: > >> On 12/13/2018 8:10 AM, Robert Krüger wrote: >> > Are there command line parameters to make it compute the exact size

[FFmpeg-user] Get exact duration of an mpeg1 file

2018-12-13 Thread Robert Krüger
Hi, is there a way to get the exact duration of a raw mpeg1 file using the ffmpeg command line? For testing I created a 30 minute test file using ffmpeg (using -c:v mpeg1video -f mpeg1video), then verified the duration using VLC and mediainfo and it is indeed exactly 30 minutes long but ffmpeg -i

[FFmpeg-user] Extraction of timebase/frame rate for timecodes of audio files

2017-12-12 Thread Robert Krüger
Hi, is there a way to extract the information about the timebase of a timecode in an audio file, like you can find in the wild e.g. in MXF or in Mov files? I can see that ffmpeg apis and thus ffprobe expose the timecode as a string-valued tag (e.g. TAG:timecode=00:00:00:00) but the information

Re: [FFmpeg-user] Muxing audio-only MXF

2017-12-01 Thread Robert Krüger
Hi Erik, On Fri, Dec 1, 2017 at 12:25 PM, Erik Dobberkau <erik.dobber...@gmail.com> wrote: > Am Freitag, 1. Dezember 2017 schrieb Robert Krüger : > > > Hi Kieran, > > > > On Thu, Nov 30, 2017 at 5:39 PM, Kieran O Leary < > kieran.o.le...@gmail.com > > &

[FFmpeg-user] Muxing audio-only MXF

2017-11-30 Thread Robert Krüger
Hi, is there a way to mux an mxf file only containing a pcm audio stream? When I try I get this: ffmpeg -i /Users/krueger/lesspain/samples/software/compressor/compressor4_1080_25p_apple_devices_best_compat_2s.m4v -vn -c:a pcm_s16le ~/tmp/ffmpeg_pcm16_rewrap.mxf ffmpeg version

Re: [FFmpeg-user] Current master not compiling on Mac

2017-06-24 Thread Robert Krüger
Hi, On Sat, Jun 24, 2017 at 3:22 AM, Moritz Barsnick <barsn...@gmx.net> wrote: > On Fri, Jun 23, 2017 at 20:59:50 +0200, Robert Krüger wrote: > > Hi, > > > > I just did a clean check-out on master did a plain configure with no > > options and the build failed.

[FFmpeg-user] Current master not compiling on Mac

2017-06-23 Thread Robert Krüger
Hi, I just did a clean check-out on master did a plain configure with no options and the build failed. Heres the end of the output when the errors start: CC libavfilter/vsrc_life.o CC libavfilter/vsrc_mandelbrot.o CC libavfilter/vsrc_testsrc.o CC libavfilter/window_func.o X86ASM

Re: [FFmpeg-user] Writing EXIF metadata

2016-10-26 Thread Robert Krüger
Hi Erik, thanks for the hint. I know Exiftool but in this case I need the capability within ffmpeg. At least that would make it a lot easier. Robert On Tue, Oct 25, 2016 at 8:25 PM, Erik Dobberkau <erik.dobber...@gmail.com> wrote: > Am Dienstag, 25. Oktober 2016 schrieb Robe

[FFmpeg-user] Writing EXIF metadata

2016-10-25 Thread Robert Krüger
Hi, is it possible to add EXIF metadata like title or description to a JPG or PNG image using ffmpeg on the command line (or via api but that's probably for the other list)? I did not find anything regarding that in the docs. Thanks in advance, Robert

Re: [FFmpeg-user] Extracting embedded xml metadata im mp4

2016-10-21 Thread Robert Krüger
On Thu, Oct 20, 2016 at 10:49 AM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2016-10-20 10:41 GMT+02:00 Robert Krüger <krueger@lesspain.software>: > > > So would a patch be accepted that implements reading of this > > additional metadata? > > (Sorry if this

Re: [FFmpeg-user] Extracting embedded xml metadata im mp4

2016-10-20 Thread Robert Krüger
On Wed, Oct 19, 2016 at 11:35 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2016-10-19 19:31 GMT+02:00 Robert Krüger <krueger@lesspain.software>: > > > Are those meta atoms parsed in the mov demuxer? > > Yes, but most content (except "hdlr") is ignore

[FFmpeg-user] Extracting embedded xml metadata im mp4

2016-10-19 Thread Robert Krüger
Hi, I am currently looking at files from Sony A7S cameras (h264 in mp4) and looking at those files in a hex/text editor I can see that they have xml metadata written in a "meta" tag as far as I can see: http://www.w3.org/2001/XMLSchema-instance; lastUpdate="2016-03-14T14:00:37Z"> Is

Re: [FFmpeg-user] How to create a multichannel wav file without a specific channel layout

2016-09-26 Thread Robert Krüger
Hi Tobias, On Mon, Sep 26, 2016 at 3:58 PM, Tobias Rapp <t.r...@noa-archive.com> wrote: > On 26.09.2016 13:10, Robert Krüger wrote: > >> Hi, >> >> On Mon, Sep 26, 2016 at 12:42 PM, Carl Eugen Hoyos <ceffm...@gmail.com> >> wrote: >> >

Re: [FFmpeg-user] How to create a multichannel wav file without a specific channel layout

2016-09-26 Thread Robert Krüger
On Mon, Sep 26, 2016 at 2:04 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2016-09-26 13:10 GMT+02:00 Robert Krüger <krueger@lesspain.software>: > > > I meant something like writing a 4,6 or 8-channel wav that just > > really contains 4,6,8 mono channe

Re: [FFmpeg-user] How to create a multichannel wav file without a specific channel layout

2016-09-26 Thread Robert Krüger
Hi, On Mon, Sep 26, 2016 at 12:42 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2016-09-26 12:17 GMT+02:00 Robert Krüger <krueger@lesspain.software>: > > > I would like to know if it is possible to create a wave file that > contains > > n channels of audio w

[FFmpeg-user] How to create a multichannel wav file without a specific channel layout

2016-09-26 Thread Robert Krüger
Hi, I would like to know if it is possible to create a wave file that contains n channels of audio which do not have a channel layout like 5.1 or stereo, much like a file used in broadcast for just storing n signals in one wav file. Thanks for any hints on this, Robert

Re: [FFmpeg-user] Find out supported pixel formats for a codec

2016-08-21 Thread Robert Krüger
Hi Kieran, On Sun, Aug 21, 2016 at 11:09 AM, Kieran O Leary <kieran.o.le...@gmail.com> wrote: > Hi, > > On Sun, Aug 21, 2016 at 8:52 AM, Robert Krüger > <krueger@lesspain.software> wrote: > > Hi, > > > > is there a systematic way to find out supporte

[FFmpeg-user] Find out supported pixel formats for a codec

2016-08-21 Thread Robert Krüger
Hi, is there a systematic way to find out supported pixel formats for a codec (or filter) on the command line? I only found ffmpeg -pix_fmts but that is the global list of all known pixel formats. Thanks, Robert ___ ffmpeg-user mailing list

Re: [FFmpeg-user] Enable all audio tracks for MOV container

2016-08-09 Thread Robert Krüger
On Tue, Jul 19, 2016 at 11:39 PM, Christian Johannesen < chrisjohanne...@gmail.com> wrote: > On Tue, Jul 19, 2016 at 4:07 PM, Rens Dijkshoorn > wrote: > > > - Original Message - > > > From: "Christian Johannesen" > > > To: "FFmpeg user

Re: [FFmpeg-user] Unable to create movs with multi-channel tracks with discrete channel layout

2016-08-06 Thread Robert Krüger
On Fri, Aug 5, 2016 at 6:28 PM, Paul B Mahol <one...@gmail.com> wrote: > On 8/5/16, Robert Krüger <krueger@lesspain.software> wrote: > > Hi, > > > > I would like to create a file that has a "discrete" channel layout, e.g. > > have an audio tra

Re: [FFmpeg-user] Unable to create movs with multi-channel tracks with discrete channel layout

2016-08-05 Thread Robert Krüger
On Fri, Aug 5, 2016 at 3:52 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > Hi! > > > Am 05.08.2016 um 10:36 schrieb Robert Krüger <krueger@lesspain.software > >: > > > > I would like to create a file that has a "discrete" channel lay

Re: [FFmpeg-user] pcm in mp4

2016-03-21 Thread Robert Krüger
On Mon, Mar 21, 2016 at 6:32 PM, Robert Krüger <krue...@lesspain.de> wrote: > > > On Mon, Mar 21, 2016 at 5:31 PM, Carl Eugen Hoyos <ceho...@ag.or.at> > wrote: > >> Robert Krüger lesspain.de> writes: >> >> > major_brand : mp42 &

Re: [FFmpeg-user] pcm in mp4

2016-03-21 Thread Robert Krüger
On Mon, Mar 21, 2016 at 5:31 PM, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Robert Krüger lesspain.de> writes: > > > major_brand : mp42 > > > Stream #0:1(und): Audio: pcm_s16be (twos / 0x736F7774) > > If this is not invalid (I don't know) than

Re: [FFmpeg-user] pcm in mp4

2016-03-21 Thread Robert Krüger
On Mon, Mar 21, 2016 at 4:59 PM, Moritz Barsnick <barsn...@gmx.net> wrote: > On Mon, Mar 21, 2016 at 15:59:04 +0100, Robert Krüger wrote: > > > the mp4 muxer currently does not accept pcm in mp4. However, there are > > several cameras out there, that produce such fil

[FFmpeg-user] pcm in mp4

2016-03-21 Thread Robert Krüger
Hi, the mp4 muxer currently does not accept pcm in mp4. However, there are several cameras out there, that produce such files. Would it be possible to support this option when using -strict -2? This way a user could create non-spec-conformant files but it would not happen, when not explicitly

Re: [FFmpeg-user] Why is it possible to set a timecode with 24:00:00:00 and beyond?

2016-01-13 Thread Robert Krüger
On Wed, Jan 13, 2016 at 12:53 PM, Christoph Gerstbauer < christophgerstba...@gmail.com> wrote: > FFmpeg allows me to set a timecode of 24:00:00:00 and beyond. > > e.g "-timecode 24:00:00:00" > > When I make an MXF D10 for example, the value of 24:00:00:00 is still in > the file. > Most but not

Re: [FFmpeg-user] Why is it possible to set a timecode with 24:00:00:00 and beyond?

2016-01-13 Thread Robert Krüger
On Wed, Jan 13, 2016 at 3:06 PM, Phil Rhodes wrote: > I'd be a very careful here. > Linear timecode (which is fundamentally an audio signal) cannot represent > a value of more than two in the tens-of-hours position, because only two > bits are allocated to it.

Re: [FFmpeg-user] Converting a 23.98p source to 29.97i ProRes w/interlaced 3:2 pulldown?

2015-10-27 Thread Robert Krüger
On Mon, Oct 26, 2015 at 8:42 PM, Mel Matsuoka wrote: > > > > On Oct 26, 2015, at 9:15 AM, Carl Eugen Hoyos wrote: > > > > I believe (strongly) that what you like as output > > framerate is not 29.97 but 3/1001 > > > Hi Carl, > > I guess I'm looking

Re: [FFmpeg-user] Deterministic results with atadenoise

2015-09-30 Thread Robert Krüger
On Tue, Sep 29, 2015 at 2:24 PM, Paul B Mahol wrote: > On 9/29/15, Robert Krueger wrote: > > Hi, > > > > is anything in atadenoise random? I am trying to get reproducible results > > for an automated test setup but just running the same command line twice

Re: [FFmpeg-user] Deterministic results with atadenoise

2015-09-29 Thread Robert Krüger
On Tue, Sep 29, 2015 at 2:23 PM, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Robert Krüger lesspain.de> writes: > > > ffmpeg -i noise_luma20.mov -threads 1 -vf atadenoise > > -c:v mpeg4 -q:v 1 noise_luma20_denoised_t1_2.mov > > You have to use -threads 1

Re: [FFmpeg-user] Display rgb statistics

2015-09-28 Thread Robert Krüger
On Fri, Sep 25, 2015 at 11:52 AM, Paul B Mahol <one...@gmail.com> wrote: > On 9/25/15, Robert Krüger <krue...@lesspain.de> wrote: > > Hi, > > > > what is the recommended way to display stats about the pixel values of > rgb > > files? The signalstats

[FFmpeg-user] Display rgb statistics

2015-09-25 Thread Robert Krüger
Hi, what is the recommended way to display stats about the pixel values of rgb files? The signalstats filter seems to only support yuv, at least the documentation does not mention anything about R(GB)MAX/AVG and the filter does not output anything either when specifying those. I am asking this

Re: [FFmpeg-user] MJPEG Quantization Matrix

2015-09-17 Thread Robert Krüger
On Wed, Sep 16, 2015 at 4:40 PM, Dsoccer16 wrote: > Thank you very much. > It works but there are two things I don't understand. > Why can't I set all the coefficients equal 1? Is it possible to use a > custom > quantization matrix and at the same time control the

Re: [FFmpeg-user] Application provided invalid, non monotonically increasing dts to muxer in stream

2015-09-16 Thread Robert Krüger
On Tue, Sep 15, 2015 at 9:56 PM, MrNice wrote: > > On 14/09/15 13:54, MrNice wrote: > > Hello, > > > > When I run the following command, I get the error messages in red: > > Application provided invalid, non monotonically increasing dts to muxer > > in stream > > > > Theses

Re: [FFmpeg-user] ct a video precisly

2015-09-16 Thread Robert Krüger
On Wed, Sep 16, 2015 at 11:33 AM, wrote: > Hello, > > I'm trying to cut a video to get 12s sequences. It needs to be accurate. > But when I ask a 12 seconds sequence (not from the begining for this > example) , I get around 12:01 seconds. > The command line is : > ffmpeg -ss

Re: [FFmpeg-user] ct a video precisly

2015-09-16 Thread Robert Krüger
On Wed, Sep 16, 2015 at 12:26 PM, Henk D. Schoneveld wrote: > > On 16 Sep 2015, at 11:33, gag...@free.fr wrote: > > > Hello, > > > > I'm trying to cut a video to get 12s sequences. It needs to be accurate. > Cutting is done on begin and end of a Group Of Pictures, a GOP. >

Re: [FFmpeg-user] 422 to 420 H264 : the chroma is not good

2015-09-11 Thread Robert Krüger
On Fri, Sep 11, 2015 at 3:37 PM, Alexandre Fressenon < alexan...@fressenon.com> wrote: > Hi all, > I have a chroma problem with a conversion. > > As input I have 2 files : 422 Uncompressed (yuv) or AppleProRes 422 (yuv), > and I want to create a new file with H264 420 (yuv). > > But when I try to

[FFmpeg-user] Failing to build ffmpeg with ffplay support

2015-09-11 Thread Robert Krüger
Hi, I am trying to build ffmpeg with ffplay support for the first time for a while and fail to do it. I installed libsdl 2.0.3 from source using make install (Mac OS 10.10 btw.), I have pkg-config installed (0.28) and config.h contains #define HAVE_SDL 0 and no ffplay is built. Ist Version

Re: [FFmpeg-user] Failing to build ffmpeg with ffplay support

2015-09-11 Thread Robert Krüger
On Fri, Sep 11, 2015 at 4:17 PM, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Robert Krüger lesspain.de> writes: > > > It may be that ffplay for OSX is currently not > > available. > > I think this is not correct: > https://evermeet.cx/ffmpeg/ > (It als

Re: [FFmpeg-user] scale filter does not do anything when only color matrix is changed

2015-08-26 Thread Robert Krüger
On Wed, Aug 26, 2015 at 11:28 AM, Paul B Mahol one...@gmail.com wrote: On 8/26/15, Robert Krueger krue...@lesspain.de wrote: Hi, I created two files using these command lines: ffmpeg -i fcp7_xdcam_ex_1080_25p_1s.mov -vf scale=in_color_matrix=bt709:out_color_matrix=bt601 -c:v ffv1 -an

[FFmpeg-user] Possible to set color_range on the command line for mjpeg?

2015-08-25 Thread Robert Krüger
Hi, for the purpose of debugging something in the libraries and submitting a corresponding bug report, I would like to specify the color_range of the codec context on the command line, i.e. in this case I want to create an mjpeg file with full range without using the deprecated yuvj pixel

Re: [FFmpeg-user] Misdetected color info for h264 mov file

2015-08-20 Thread Robert Krüger
On Wed, Aug 19, 2015 at 8:08 PM, Carl Eugen Hoyos ceho...@ag.or.at wrote: Robert Krüger krueger at lesspain.de writes: encoder : Lavf56.23.100 How was the input file created? using the apple h.264 encoder for encoding and libavformat for muxing. I presume something is at least

Re: [FFmpeg-user] Misdetected color info for h264 mov file

2015-08-20 Thread Robert Krüger
On Thu, Aug 20, 2015 at 8:30 AM, Robert Krüger krue...@lesspain.de wrote: On Wed, Aug 19, 2015 at 8:08 PM, Carl Eugen Hoyos ceho...@ag.or.at wrote: Robert Krüger krueger at lesspain.de writes: encoder : Lavf56.23.100 How was the input file created? using the apple h.264

[FFmpeg-user] Misdetected color info for h264 mov file

2015-08-19 Thread Robert Krüger
Hi, I have a case where ffprobe does not detect color information (matrix, primaries) that is in the mov file. I have checked that in the file the respective values of the indices in the colr atom are correctly set to ITU-R BT.709 but ffprobe does not detect that. ./ffprobe -show_format

Re: [FFmpeg-user] Extracting video levels on the command line

2015-08-04 Thread Robert Krüger
On Mon, Aug 3, 2015 at 10:49 PM, Paul B Mahol one...@gmail.com wrote: Dana 3. 8. 2015. 22:28 osoba Moritz Barsnick barsn...@gmx.net napisala je: On Mon, Aug 03, 2015 at 21:55:59 +0200, Robert Krüger wrote: Is there any other way than looking at each frame's histogram (using

[FFmpeg-user] Extracting video levels on the command line

2015-08-03 Thread Robert Krüger
Hi, is there an easy way to extract things like min/max of each video component for a video using the command line? I first thought, there may be a vstats filter that more or less does what astats does for audio but that does not seem to be the case. Is there any other way than looking at each

Re: [FFmpeg-user] Converting .mov files playable on html5 players..but very slow

2015-06-27 Thread Robert Krüger
On Sat, Jun 27, 2015 at 8:30 AM, Dani A danix4u-at-yahoo@ffmpeg.org wrote: I tried to convert a .mov file to mp4 using the above command and I recieved the below errors. what is wrong? [root@test video]# ffmpeg -i MVI_0797.MOV -c:v copy -c:a copy -movflags faststart MVI_0797-fast.MP4

Re: [FFmpeg-user] Audio Tapes - How to restore audio quality

2015-05-30 Thread Robert Krüger
On Sat, May 30, 2015 at 4:34 AM, jd1008 jd1...@gmail.com wrote: I need to transfer a bunch of audio tapes to digital media. But I would like to 1. improve the signal to noise ratio. 2. get rid of clicks and pops. Is there a way to do this using ffmpeg? I would say no. I am not aware of

Re: [FFmpeg-user] Audio Tapes - How to restore audio quality

2015-05-30 Thread Robert Krüger
On Sat, May 30, 2015 at 4:57 AM, jd1008 jd1...@gmail.com wrote: Audacity??? I have never been able to make audacity improve the signal to noise ratio, nor eliminate clicks and pops. How do you do that? Depending on the kind of noise you have and if you have enough isolated noise to

Re: [FFmpeg-user] Smooth frame rate reduction?

2015-03-31 Thread Robert Krüger
On Tue, Mar 31, 2015 at 5:22 PM, Petr Tresnak peter.che...@quick.cz wrote: Hi, I need to reduce frame-rate from my video shoot by mobile ( variable frame-rate about 29 fps) to 25 fps. As you know using -r 25 just drops every 6th frame resulting in choppy (jerky) footage. Is there any

Re: [FFmpeg-user] pitch corecting audio?

2015-03-26 Thread Robert Krüger
On Thu, Mar 26, 2015 at 3:03 PM, Moritz Barsnick barsn...@gmx.net wrote: On Wed, Mar 25, 2015 at 20:20:04 -0700, James Heliker wrote: If I could access the original 23.976 source audio and apply -af atempo=25*1001/24000, would that accomplish the job without affecting pitch in the first

Re: [FFmpeg-user] Test if ProRes 4444 are real 12bit

2015-01-25 Thread Robert Krüger
On Sat, Jan 24, 2015 at 7:11 PM, Christoph Gerstbauer christophgerstba...@gmail.com wrote: Hello, I want to test ifthe ProRes of the ARRI Alexa are real 12 Bit? Is there method to proove it with ffmpeg? AS far as I know ffmpeg is only ready to open prores with yuv422p10le and

[FFmpeg-user] Start time/duration question when transcoding to WMV/WMA

2014-10-14 Thread Robert Krüger
I observed that start times and durations changed when transcoding whatever input (tried a few) to wmv/wma in a wmv container. Here's a sample command line with output: ffmpeg -f lavfi -i testsrc=s=640x480:d=1 -f lavfi -i sine=frequency=1000:sample_rate=48000:duration=1 -c:v wmv2 -c:a wmav2

[FFmpeg-user] Help with command line syntax change for flags

2014-08-01 Thread Robert Krüger
Hi, I have an old command line using -flags2 +ivlc+sgop+non_linear_q. The syntax was changed a while ago, I think with mpeg-specific flags moving to -mpv_flags. I have not found (maybe I just missed it) in the docs how that would translate into current syntax. Could someone help me out? Thanks,

[FFmpeg-user] new website

2014-07-27 Thread Robert Krüger
congratulations on the new website! Well done. Regards, Robert ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Possibility to dump AVCodecContext, AVFormatContext fields for a command line?

2014-07-18 Thread Robert Krüger
On Jul 18, 2014 6:32 PM, Carl Eugen Hoyos ceho...@ag.or.at wrote: Robert Krüger krueger at lesspain.de writes: is there any way to see the AVCodecContext, AVFormatContext fields used for a given command line other than using a debugger? Maybe a compile flag of some sort