[FFmpeg-user] libvpx + libopus creates files with negative starttime for audio

Hi I have come across an oddity with transcoding files to vp9/libopus from mp4 The resulting files have a negative starttime for audio , nearly all the time this is -.007. I noticed it when I was concating files using demux concat and specifying video duration This resulted in concat operation

[FFmpeg-user] Problem with concatenating converted mkv files with changed sample rate

Hi I have come across a strange issue with concatenating mkv (vp9/libopus) files which have been transcoded from mp4 and the saple rate changed. Conversion string ffmpeg -v 35 -threads 4 -i /srv/data/staging/Doctor_Who_10_3_Frontier_in_Space_1_envsc2_1_envs_vo.mkv -c:v libvpx-vp9 -crf 40

[FFmpeg-user] Titles not showing on dlna with matroska

Hi I am looking at moving from mp4 to matroska for "encoding" However I have come across a wierd issue wih the title not showing on dlna. When viewed in vlc or parolethe title is displayed as I would expect, however on any dlna client , no title, only the filename is shown. Any tips on how to

[FFmpeg-user] How to remove duplicate frames

Hi, every so often I come across a downloaded video where the source has multiple stall moments, where the same frame shows for several seconds (up to a minute) and then continues. I have looked at mpdecimate,but the audio sync is totally destroyed, as per various variations of the following

Re: [FFmpeg-user] Text quality (credits etc) in h264

On Thu, 28 May 2020 at 11:17, Edward Park wrote: > Hi, > > Are there any tips to maintain the quality of text in output files. > > For example credits or slides in zoom videos. > > If mostly static text, or maybe for the credits, low constant motion, is > most of the video content, I think

[FFmpeg-user] Text quality (credits etc) in h264

Are there any tips to maintain the quality of text in output files. For example credits or slides in zoom videos. Using crf 22 the video is fine, except for text on the screen (not sub-titles) thanks Mike ___ ffmpeg-user mailing list

Re: [FFmpeg-user] Is there a bulk mode for ffprobe

eas to speed this up On Thu, 16 Jan 2020 at 15:26, Carl Eugen Hoyos wrote: > Am Do., 16. Jan. 2020 um 16:25 Uhr schrieb Mike Martin >: > > > > As per the header is there a way for ffprobe to analyze multiple media > > files at once? >

[FFmpeg-user] Is there a bulk mode for ffprobe

As per the header is there a way for ffprobe to analyze multiple media files at once? I cant find anything in the docs ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above,

Re: [FFmpeg-user] How to resolve “ERROR: libx264 not found”?

Not familiar with the toolchain script, but looks like your either missing the development files (usually live in include dir and end in .h) or they are installed but not in a standard location On 1 August 2014 12:37, David Varghese davidv...@gmail.com wrote: Hi, I needed to install ffmpeg

Re: [FFmpeg-user] Transcode videos

and at least used to add a linked file called ffmpeg On 10 July 2014 15:38, Steve Boyer steveboye...@gmail.com wrote: On Jul 10, 2014 9:05 AM, Steve Boyer steveboye...@gmail.com wrote: On Jul 10, 2014 6:52 AM, Felipe Lacerda felipe.lace...@upx.com.br wrote: Hello Moritz,