Re: [FFmpeg-user] windows7 64bit ffmpeg pthread

://github.com/jb-alvarado/media-autobuild_suite Download, answer setup questions in first run, and then let it download toolchain+packages and compile. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To

Re: [FFmpeg-user] filter_complex and map. Am i confused or bug?

Stream specifiers for output stream codec options s  e.g. v:vidout1 can refer to ordinal index only, so -b:v:vidout1 becomes -b:v:1 assuming vidout1 is mapped after vidout2. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.or

Re: [FFmpeg-user] 24h timecode max

esult. Not implemented at present. Will send patch soon. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with su

Re: [FFmpeg-user] How to re encode broken mp4s

reproduce. With ffprobe on your sample, I get     I B B B P B B B P B B B P ... Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpe

Re: [FFmpeg-user] Treating video frame-based instead of time-based

ult is the extraction of every 5th frame. If you want to keep the selected frames in a video and compact them, then setpts + fps should be used afterwards to generate a regular CFR video. Oh, and the correct expression is    select='not(mod(n+1,5))' Gyan ___

Re: [FFmpeg-user] Treating video frame-based instead of time-based

org/ffmpeg-filters.html#freezedetect Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Image2 demuxer on Synology

On 04-01-2019 05:59 PM, Moritz Barsnick wrote: No chance for a PNG though, as far I can tell. Appears doable. I've posted an answer at https://superuser.com/questions/1375270/ffmpeg-waveform-png-invalid-argument Gyan ___ ffmpeg-user ma

Re: [FFmpeg-user] Copy Audio

causing a desync - in which case PCM is preferable. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Copy Audio

invalid for format FWIW, PCM audio isn't allowed in MP4, only MOV, see http://mp4ra.org/#/codecs It was a regression in ffmpeg 3.4 - 40 that allowed this. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/f

Re: [FFmpeg-user] Using ffmpeg with youtube-dl: Non-monotonous DTS in output stream

On 15-12-2018 07:44 PM, Paul B Mahol wrote: On 12/15/18, Gyan wrote: Some playlists contain a sequence of separately produced MPEG-TS files. So, there's a timestamp reset when each new segment is received. At this point, the timestamp code in libavformat's mux.c simply increments

Re: [FFmpeg-user] Using ffmpeg with youtube-dl: Non-monotonous DTS in output stream

extract the individual streams and remux using mp4box.     ffmpeg -i downloaded.mp4 -c copy video.h264     ffmpeg -i downloaded.mp4 -c copy audio.aac     mp4box -add video.h264 -add audio.aac -new fixed.mp4 Gyan ___ ffmpeg-user mailing list ffmpeg-

Re: [FFmpeg-user] Unknown options in FAQ

found under https://ffmpeg.org/ffmpeg-codecs.html#Codec-Options That entry is almost 12 years old. For encoding with modern codecs, the wiki is more up-to-date: https://trac.ffmpeg.org/wiki#Encoding Gyan ___ ffmpeg-user mailing list ffmpeg

Re: [FFmpeg-user] Help with metadata writing (mp4)... what's possible?

he tags in a non-standard manner i.e. as a child of the udta atom rather than at the top-level. I'' check into this when I can. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsu

Re: [FFmpeg-user] Help with metadata writing (mp4)... what's possible?

w(stored-value % 256) Mediainfo does the same, which would indicate that this is the iTunes spec. However, I find other sources which treat it as full 32-bits. Let me look into it. But it can't be a string. Gyan ___ ffmpeg-user mailing list f

Re: [FFmpeg-user] Help with metadata writing (mp4)... what's possible?

any other tags if this method is used. Thanks, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Setting colour range.

On 27-11-2018 09:17 PM, Gyan Doshi wrote: On 27-11-2018 08:59 PM, Kieran O Leary wrote: Can this metadata ever be set at a container level for mov? Must it always be the stream that holds this info? The muxer only writes it for MP4s, The QT spec doesn't accommodate its sign

Re: [FFmpeg-user] Setting colour range.

le_ref/doc/uid/DTS40013070-CH1-TNTAG7 Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] setdar ratio - syntax

rs, the colon should be escaped and the string quoted i.e. 'X\:Y', which works for me. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpe

Re: [FFmpeg-user] filters zoompan and crop

f 2 crops a window of one-half width and height, so one-fourth area. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Parameters for "framerate" and "keyframe interval"?

ement. The encoder will place keyframes as is optimal. But if you insist, add `-force_key_frames source`. You can also force a fixed keyframe interval using `-g N` where N is measured in frames (not seconds). Gyan ___ ffmpeg-user mailing list ffmpeg-us

Re: [FFmpeg-user] YUV RGB Video Levels

a, and the MSB represents alpha i.e. AVUY I'm not sure this will do job, though.If there's any legal YUV triplet which maps to out-of-bounds RGB this filter won't sanitize it. The crude way is to roundtrip via RGB using scale. Gyan ___ ff

Re: [FFmpeg-user] Maintainers of wiki

On Wed 24 Oct, 2018, 2:08 AM Rodrigo Farias, wrote: > How do I contact the maintainers of trac.ffmpeg.org? I would like to > propose a tweak to page "Concatenate". > The wiki is freely editable by logged-in users. Gyan ___ ffmpe

Re: [FFmpeg-user] frag_duration ignored when segmentation is used

4 > Options for the child muxer have to be relayed using segment_format_options i.e. -segment_format_options frag_duration=400 Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscrib

Re: [FFmpeg-user] Ffmpeg stopping at exactly 400 frames

What is the problem with this? Why is it always stopping? > You are retiming frames to have a density of 20/s using setpts and stopping execution using -t 20. Drop the latter option. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http:/

Re: [FFmpeg-user] How to specify Baseline Profile when using h264_omx encoder?

> ( > > https://github.com/FFmpeg/FFmpeg/blob/a0ac49e38ee1d1011c394d7be67d0f08b2281526/libavcodec/omx.c#L528 > ) > The earliest branch with support looks to be 3.3; your build is 3.2 series. https://github.com/FFmpeg/FFmpeg/commit/13332504c98918447159da2a1a34e377dca360e2#di

Re: [FFmpeg-user] -c:v png

On Mon, Sep 24, 2018 at 2:44 PM Benoit LELOUTRE wrote: > > Can you suggest me a lossy codec with alpha channel? > > VP8 and VP9, albeit only in YUV 4:2:0 encoding. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg

Re: [FFmpeg-user] Timestamp for variable frame rate (VFR ) video

t timestamps, then the pts function is what you need - it is not a "frame counter". You can format the output like shown at https://video.stackexchange.com/a/21907/1871 Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/

Re: [FFmpeg-user] Merging images to video, plays well in mpv but not VLC

ouldn't handle frame durations > 300 ms, so upgrade or increase framerate to 6. Gyan * https://trac.videolan.org/vlc/ticket/214 and http://git.videolan.org/?p=vlc.git;a=commit;h=c50cc26697eb92af03d73bd8e1a52c47bc6c3802 ___ ffmpeg-user mailing l

Re: [FFmpeg-user] Multiply audio samples

interval, and then multiply by > 2^15. > > My question is how to make this multipliaction or division by 2^15. > > Filter inputs will be auto-converted from any non-float formats to > float or double one. > And aformat=s16p can be added afterwards to get back to [-2^15..2^15]

Re: [FFmpeg-user] Multiply audio samples

mat filter will allow you to convert between integer and floating point formats. See http://ffmpeg.org/doxygen/trunk/group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5 for the various formats available. Gyan ___ ffmpeg-user mailing list ffmpeg-

Re: [FFmpeg-user] Zoom out/scale down dynamically

l resize them to a fixed size prior to encoding. However, you can use them in overlay, where the transparent padding gets hidden and you get the effective result. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/f

Re: [FFmpeg-user] Dealing with incomplete HEVC/h265 video

On Wed, Sep 12, 2018 at 3:00 PM Aviv Hurvitz wrote: > > I'll try to delve into the HEVC stream format, maybe I'll see a record of > the skipping in there. I hope there is a frame index or time stamp per > frame within. (?) > Suggest you try mp4box to mux the r

Re: [FFmpeg-user] Zoom out/scale down dynamically

in/scales up. Why? And what can I use instead? > What's the intended use of the image after dynamic scaling? Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link a

Re: [FFmpeg-user] Unusable audio after conversion

t.mp4] Perhaps related to https://trac.ffmpeg.org/ticket/1881 Try ffmpeg -acodec pcm_s24le -i input.mp4 -c:v copy -c:a aac -b:a 384k -ac 2 output.mp4 Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-use

Re: [FFmpeg-user] Custom seek

? The 10 seconds are hard-coded. You can either modify the source and build ffplay yourself, or use a more versatile tool, such as mpv. Patch pending - https://patchwork.ffmpeg.org/patch/10213/ Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http

Re: [FFmpeg-user] Problematic RTSP re-streaming

On 24-08-2018 08:16 PM, Shaji stellaton wrote: Hello George, Thanks for the prompt response. This is not the issue I discussed. He did not reply to your email. This is a mailing list. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http

Re: [FFmpeg-user] concat demuxer and 'strange' mp4s with wrong TBN

ut.mp4 where X is the same value used for all files, and ideally the highest found among all inputs. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ff

Re: [FFmpeg-user] crop values are incorrect and seemingly random

uv422p10le, 620x260 [SAR 1:1 DAR 31:13], q=-1--1, 0.04 fps, 24k tbn, 23.98 tbc (default) Looks fine except for that avg framerate. Where are you getting 620x248 from? Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listi

Re: [FFmpeg-user] Audio ducking of input music based on vocals in another audio file

is is similar to side channel audio compression. Is this something that is achievable with ffmpeg? or could be with a custom audio filter? This _is_ sidechain compression and ffmpeg has the sidechaincompress filter See https://ffmpeg.org/ffmpeg-filters.html#sidechaincompress

Re: [FFmpeg-user] exponential decay, is it possible?

loop 1 -i starting-image.jpg -vf "geq=lum='p(X,Y)*pow(0.9,N)':cb='p(X,Y)'" -vframes 10 -q:v 2 out%d.jpg The input luma is multiplied with 0.9 raised to the input frame count; count starts from zero. Chroma channels remain as-is. Regards, Gyan _

Re: [FFmpeg-user] The concat filter and duplicate frames from prores files

"[0:v] [0:a] [1:v] [1:a] [2:v] [2:a] concat=n=3:v=1:a=1[v][a]" -map "[v]" -map "[a]" -preset fast -c:v libx264 -b:v 2000k -c:a aac -b:a 96k /tmp/output.mp4 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg

Re: [FFmpeg-user] exponential decay, is it possible?

4d.jpg': > Duration: 00:00:00.04, start: 0.00, bitrate: N/A FFmpeg only sees one image. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link abo

Re: [FFmpeg-user] exponential decay, is it possible?

--> luminance 0 frame 1--> luminance 1 frame 2--> as per exprs above ... frame 2+T --> " frame NEXT --> source luminance ... frame LAST --> " ? Or would the exponential decay restart each time a pixel of lum 1 is encountered? Gyan _

Re: [FFmpeg-user] repeat first and last frame of a video

://stackoverflow.com/a/43417253/5726027 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] -f segment and -id3v2_version 3 seems not working together

le format muxer have to be relayed via segment_format_options, so, instead of, -id3v2_version 3 use -segment_format_options id3v2_version=3 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo

Re: [FFmpeg-user] Freeze frames in timeline editing

fset from the start of the whole stream. For double speed, you only need to double the inter-frame interval. So, use instead, setpts='if(eq(N,0),0,PREV_OUTPTS+if(gte(N,100),2,1)*(PTS-PREV_INPTS))' Gyan ___ ffmpeg-user mailing list ffmpe

Re: [FFmpeg-user] ffmpeg -f concat from standard input instead of a file

On 01-07-2018 10:42 PM, Cecil Westerhof wrote: echo -e "file educational.mov\nfile educational02.mov" | ffmpeg -f concat -i - -c copy educationalComplete.mov Add -protocol_whitelist file,pipe,crypto to before -i - Reg

Re: [FFmpeg-user] fMP4 generation speed

On 27-06-2018 09:50 AM, Ronak wrote: Just to clarify, I'm making a single fMP4 file here; not multiple. Just to confirm. Test with the MP4 muxer and create a fragmented MP4 to check speed. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg

Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem

tinterlace=interleave_top, fieldorder=tff, setsar=1" -c:v ffvhuff -an -aspect 16:9 out Additionally, since your input isn't square-pixels, the following scale may be more accurate, scale=oh*4/3:1080 Regards, Gyan _

Re: [FFmpeg-user] problems with cutting a video - resulting file is 254 bytes of size

copy). Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] fMP4 generation speed

238095238095 -hls_segment_type fmp4 -hls_flags single_file+append_list -hls_playlist_type vod "${FILE}_10sec_v7.m3u8" There's no encoding here, so what's causing ffmpeg to take so long? What speed do you get? Share full log. Regards, Gyan __

Re: [FFmpeg-user] How add expression in drawtext's text

frame count beforehand. Once you do, use the text expression: text='%{eif\:n\:d\:4}' where 4 is the width of the text with padding. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/f

Re: [FFmpeg-user] Zoompan filter, frame counts seem to start from 2 and 1, not 0 -- expected behaviour?

On 02-06-2018 02:39 PM, Jim DeLaHunt wrote: On 2018-06-02 01:22, Gyan Doshi wrote: This isn't related to the zoompan filter. If you ask ffmpeg to not compress the log messages by setting the repeat flag `-v +repeat`, you'll see that the crop filter processes the first frame twic

Re: [FFmpeg-user] Zoompan filter, frame counts seem to start from 2 and 1, not 0 -- expected behaviour?

a=commit;h=af1761f7b5b1b72197dc40934953b775c2d951cc I'll try to bisect later and test. Feel free to raise a ticket. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-req

Re: [FFmpeg-user] what's print() used to do in filter graph?

fmpeg-utils.html#Expression-Evaluation Where to get the detailed description of fontsize? The text is rasterized by the freetype lib, not ffmpeg. See some background on fontsizes at https://www.freetype.org/freetype2/docs/glyphs/glyphs-2.html Regards,

Re: [FFmpeg-user] filter_complex concat large number of files.

-movflags +faststart -bf 2 -g 15 -pix_fmt yuv420p -y "C:\\Users\\Wim\\Video\\RoavConcatTest.mp4" Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link

Re: [FFmpeg-user] How to get rid of X265 info output

c1 -preset faster -crf 25 -x265-params profile=main:me=umh:subme=5:ref=4:aq-mode=2:aq-strength=1.0:psy-rd=2.0:psy-rdoq=1.0:rd=6 -f mp4 'out.mp4' I wold like to get rid of the "x265 [info]" lines (full output at the end). Add log-level=1 or lower to you

Re: [FFmpeg-user] HEVC to RAW

ffmpeg.org/download.html Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] forfiles - ffmpeg -Volume Filter not recognised

p4'. Maybe quotes within quotes is the problem?? I think so. You can skip the quotes surrounding volume=3 Alternatvely, the escape character for PS is ` (grave accent, above Tab key). So you can also try `"volume=3`" Regards, Gyan

Re: [FFmpeg-user] Replacing an audio stream in an MP4

separate files first. ffmpeg -i test.mp4 -i replacement.mp4 -map 0:v -map 1:a -c copy replaced.mp4 This will also be devoid of the PTS msgs, which were due to your use of .h264, which is a raw stream without timestamps. Regards, Gyan ___ ffmpeg-user

Re: [FFmpeg-user] No audio while plying ffplay

On 5/5/2018 7:06 PM, swades wrote: https://s17.postimg.cc/8g0ianye7/ffplay_4.jpg You haven't asked ffplay to play any file. ffplay is not a graphical program. Basic use of ffplay requires issuing a command of the form: ffplay video-filename e.g., on Windows 7, ffplay C:\Windows\Me

Re: [FFmpeg-user] No audio while plying ffplay

On 5/5/2018 6:48 PM, swades wrote: Hello Respected i can't get. can you please type the command here. it ll be help for me. Thanks for previous help C:\>set SDL_AUDIODRIVER=directsound C:\>ffplay file ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg

Re: [FFmpeg-user] No audio while plying ffplay

every CMD session, unless you add it to system start-up. This is related to ticket #6891 - https://trac.ffmpeg.org/ticket/6891 Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit

Re: [FFmpeg-user] How to properly record sound when capturing web cam?

file. { "thread_queue_size", ... OPT_INPUT, ... "set the maximum number of queued packets from the demuxer" }, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscr

Re: [FFmpeg-user] Support request - configuring ffmpeg for YouTube Live 60fps

On 4/26/2018 2:25 PM, Stuart Porter wrote: However the video is completely blank Even when played with ffplay? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or e

Re: [FFmpeg-user] Support request - configuring ffmpeg for YouTube Live 60fps

ng frames? And without those latest errors? Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Support request - configuring ffmpeg for YouTube Live 60fps

On 4/25/2018 9:41 PM, Stuart Porter wrote: However, if I increase the -rtbufsize to 1G I get this Before it eventually fails Message appears to be missing.. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ff

Re: [FFmpeg-user] Support request - configuring ffmpeg for YouTube Live 60fps

e parameter])! frame dropped! We have tried adjusting the quality, speed, framerate and bandwidth but get very similar results each time. Have you tried changing the parameter indicated by the error msg? e.g. -rtbufsize 256M to be placed before

Re: [FFmpeg-user] Fastest way to get keyframe indices from MOV files?

poses. Fastest way probably would be to use some other app which can dump data from inside the MOOV box/atom, specifically the track stss box. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-use

Re: [FFmpeg-user] ffmpeg ignores video filter (-vf:v:0/1), possible bug?

s udp://@239.0.0.123:1234?overrun_nonfatal_option=1 -vf is an alias for filter:v but does not accept stream specifiers. Use -filter:v:0 and -filter:v:1 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman

Re: [FFmpeg-user] weird seek behaviour in hls streams

offset). I haven't looked at your console output yet, but this is the demux/decode delay used in MPEG-TS files. Add -muxdelay 0 to your HLS generation command to skip this offset. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] weird seek behaviour in hls streams

of 1.4s. This is not the core problem though. when we generate short clips deep in to the stream i.e. -t 1000 -s 10 it often happens we get no output at all. any ideas? Please share full uncut command and console output for such a case. Regards, Gyan

Re: [FFmpeg-user] h264_vaapi missing frames

ind? Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] mpeg2video encode gop structure

oding order. You can also include pkt_pos in show entries to see position in file. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user

Re: [FFmpeg-user] tiled overlay filter?

10,trim=end_frame=1[wm];[0][wm]overlay" out.mp4 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] ProRes encoding: Question about FFmpeg docs

) 'yuva444p10le' -> the 'a' in 'yuva' represents alpha. Check with ffmpeg -i bunny.mov -lavfi color=s=hd720:c=pink[bg];[bg][0]overlay=shortest=1" test.mov In test.mov, do you see pink in place of the transpar

Re: [FFmpeg-user] Merging apad and overlay filters in complex filter

On 3/5/2018 4:14 PM, C Colutions wrote: [audio]apad[audio]; should be [1:a]apad[audio]; You're sending an input file, specifically the (first) audio stream of the 2nd input file, to the filter, so 1:a is the designation to identify it. Regards,

Re: [FFmpeg-user] ffmpeg remuxing from MTS to MP4 now produces an unreadable audio stream

On 2/18/2018 1:50 PM, Galen Menzel wrote: Here is the command and console output when the (non-functional) mp4 file is created from the original MTS file: Does the below work? ffmpeg -i [MTS_FILE] -acodec copy -vcodec copy -atag ac-3 [MP4_FILE] Regards, Gyan

Re: [FFmpeg-user] Jumpy Video with Overlay

On 2/17/2018 10:05 PM, Mark wrote: color=black:1920x1080:d=42 Change to color=black:1920x1080:d=42:r=30 color defaults to 25 fps and since it gets conveyed as the base for the overlays, 5 fps from all overlay secondary inputs get dropped. Regards, Gyan

Re: [FFmpeg-user] Is there an input or output file-size limit that FFmpeg can handle ?

, I've encountered no limit - transcoded a few uncompressed streams ranging in 10s of GB. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or

Re: [FFmpeg-user] YouTube streaming of a static image...

The (input) option for this is -stream_loop. Value of -1 is for infinite loop. In the past, there were issues with smooth PTS generation, but I believe they have been recently fixed. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://

Re: [FFmpeg-user] ffmpeg ffv1 issue

On 1/28/2018 1:31 AM, jeff.radcli...@comcast.net wrote: - slicecrc 0 Remove the space between '-' and 'slicecrc' Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-

Re: [FFmpeg-user] stopping ffmpeg correctly while piping

tput, regardless of muxer. This doesn't apply to simple filterchains (vf/af) which act on - expressly or implicitly - mapped streams. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To u

Re: [FFmpeg-user] Extract rotation flag

On 1/8/2018 10:03 PM, Andrey Goreev wrote: Just need to get rid of "TAG:rotate=" now to get a clean "90" Change -of in my command to -of compact=p=0:nk=1 to get just the value. Regards, Gyan ___ ffmpeg-user mail

Re: [FFmpeg-user] Extract rotation flag

On 1/8/2018 9:49 PM, Andrey Goreev wrote: I am wondering if there is a way to extract the rotation flag ONLY using ffmpeg/ffprobe. Try ffprobe video.mp4 -show_entries side_data=rotation -select_streams v -read_intervals %+#1 -of compact=p=0 -v 0 Regards, Gyan

Re: [FFmpeg-user] image2 examples missing `-f image2`, can that be right?

be parsed as a sequence. But if an image extension isn't found, that test doesn't happen. And string%d.ext is treated as a single input by whichever demuxer gets passed the input, so a%d.mp4 is opened as a single MP4. Regards, Gyan ___ f

Re: [FFmpeg-user] image2 examples missing `-f image2`, can that be right?

or an input forces the use of that demuxer e.g. with a MKV renamed to MP4, running ffmpeg -i in.mp4 will still result in FFmpeg recognizing it as a Matroska file. but ffmpeg -f mp4 -i in.mp4 will force the MP4 demuxer, and FFmpeg will throw an error. Regards,

Re: [FFmpeg-user] Combine 2 small GIF images to small animated GIF, fails with "Decoder (codec none) not found for input stream #0:0"

GIFs have a dedicated demuxer and don't work via the image2 demuxer. Try the concat demuxer, or ingest the two GIFs separately and use the concat filter. Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/ma

Re: [FFmpeg-user] Quicktime reference files

-enable_drefs? Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Unable to compile with libx264

this process? In x264.h, what's the value of X264_BUILD? Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org

Re: [FFmpeg-user] Audio not playing in Quicktime Player

ck... As per the ref below, audio in MP4 can only be AAC. https://developer.apple.com/library/content/documentation/MusicAudio/Conceptual/CoreAudioOverview/SupportedAudioFormatsMacOSX/SupportedAudioFormatsMacOSX.html Regards, Gyan ___ ffmpeg-user ma

Re: [FFmpeg-user] Trimming a MOV creating out-of-sync, under-length result

e 100, instead, I'm seeing frame 102 Add -x264opts b_pyramid=0 i.e. -i "OutputTests_24p_v2.mov" -ss 00:00:04.041 -t 00:00:02.720 -r 24 -x264opts b_pyramid=0 "AR003_H264-FF_v20.mov" See https://superuser.com/q

Re: [FFmpeg-user] convertion from h264 to mp4 for MSE

has been successfully converted to mp4 by mp4box command: There's a longstanding FFmpeg bug in assigning PTS to raw H264 streams with B-frames. PTS is assigned the same as DTS i.e. in coded order, but it should increase along display order. Stick with MP4box. Regards,

Re: [FFmpeg-user] how many complex filters i can use at the same time

in advance ! As many as you want. But pads cannot be exchanged between two filter_complex graphs i.e. output of one FC graph cannot be ingested by another FC graph. and all ultimate output pads should be mapped or sent to a sink. Regards, Gyan ___ f

Re: [FFmpeg-user] Stuck on adelay/amix sync problem..

On 12/19/2017 9:40 PM, Mark Corner wrote: I think we crossed emails, but the use of aresample=async=5000 seems to fix it for me. Use async=1 for discarding padding limits. The filter will then pad as needed. Gyan ___ ffmpeg-user mailing list

Re: [FFmpeg-user] Sending Patches to the Dev List

en if sent through a client like Thunderbird. Wait for three days after submission and ping if there's no progress. Keep all further correspondence in the same thread on ffmpeg-devel. Regards, Gyan *there may be a way to alter this behaviour but I haven't looked into it. Possibly to do wi

Re: [FFmpeg-user] Extracting frames from 59.94 FPS video - only every other frame is different

_time=0.300300|size=90740 packet|pts_time=0.316983|size=24167 Every other frame's size looks to be much smaller. The first frame is an I-frame and all others are P-frames. When x264 repeats a frame, the size is usually up to a few hundred bytes. Is the camera truly registering 60 times a sec

Re: [FFmpeg-user] Bit Depth of PNG Overlay with Alpha channel

.png -filter_complex '[1]premultiply=inplace=1[img];[0][img]overlay' -c:v libx264 -profile high10 -map '[out]' out2.mp4 Regards, Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-

Re: [FFmpeg-user] pan filter confusion

On 11/23/2017 5:46 PM, Carles Vila wrote: So far I've been able to create a stereo mp4 file, but the audio is silent. How are you testing the output? Have you tried ffplay -vn proxy_stereo.mp4 ? Gyan ___ ffmpeg-user mailing list f

Re: [FFmpeg-user] Amerge trouble

ow to squeeze pcm_s24le into the filter_complex part…) The default audio codec for the null muxer is pcm_s16le, and your audio codec option is only set for the first output, so add '-c:a pcm_s24le' anywhere after the output mxf filename, and before the pipe character. Regards,

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