similar to: theora_encode is adding vertical pixels

When I converted two files with ffmpeg2theora their duration changed shorter - they seem to play back with accelerated speed. When I play one of them with VLC, the video stops at 99 seconds but audio continues until 170 seconds. The other file is 120 seconds long but it is played back in 80 seconds. Here is ffmpeg2theora output: $ ffmpeg2theora --optimize --inputfps 25 -F 25 2002-05-23\ Juho\

Hi all, I'm having a little trouble with a Vorbis decoder hanging (actually hard looping the CPU) when I call ov_pcm_seek(&vorbis_file, 0) on a multiplexed theora/vorbis file. It appears to be the vorbisfile library that has the problem. The call to ov_pcm_seek never returns. Seeking in non-multiplexed, including chained, files is OK. Seeking to other values, including sample 1, works

Theora-devs: I am in seek of a theora (but possibly vorbis/ogg/ffmpeg) dev to optimize the encoding in a realtime software product. We do live encoding and transcode into ogg/theora/vorbis at various resolutions and frame rates. The higher resolutions cannot process in realtime and we are pushing the boundaries of hardware (cpu) encoding with the existing theora/ffmpeg. Right now we have to

I am looking at getting a HD webcam, I am wondering what is the bitrate of them? Can they be used with a 12Mb/s USB ports? tom_a_sparks "It's a nerdy thing I like to do"

I wish to transcode an AVI from 29fps to 15fps theora. I have tried many combinations. The nearest I have so far is to: 1) ffmpeg -i input.avi -f avi -vcodec rawvideo -acodec pcm_s16le -r 15 -ar 22050 -ac 1 intermediate.avi then 2) ./ffmpeg2theora-0.15.linux.bin -f avi -c1 -H 22050 -o out.ogg intermediate.avi This gives me an output I want, however, the intermediate uncompressed stage

hi all as the input stream for the "encoder_example", it could give "YUV4MPEG2" file, can we use any other file type.....? insted of "YUV4MPEG2" file, i want to use "rawvideo" file , because i want to compare theora with xvid codec. so that i need to encode a video (same video) using both theora and xvid. but both these codecs does not operate on the

Is there a way to use multi-threading with ffmpeg2theora? Pretty much any type i'm ok with, including multi-threaded theora encoding or multi-threaded ffmpeg decoding, or using half of my cpu cores on ffmpeg decoding and the other half on theora encoding. Is there a way to do multithreaded thoera encoding? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I use my system for time-shifting local TV and I usually re-encode the capture card's MPEG2 into theora to create much smaller files. However since upgrading from alpha 5 to alpha 7 I can no longer do this. The problem seems that the bit rates are too high and the resulting files are unplayable (tried mplayer, vlc, and theora_play). I've built the alpha7 libtheora rpm (using the

Im using a customs processor to run ffmpeg on a video to create a thumbnail. So far so good. Except when I do: cmd = "-i #{@file.path} -f flv -s 320x240 ~/Downloads/foobar/q.flv" success = Paperclip.run(''ffmpeg'', cmd) Console is reporting: ffmpeg ''-i /var/folders/uL/uL0bYOOZEZaJH5E+BmDJVE+++TI/-Tmp-/stream, 16824,1.mpeg -f flv -s 320x240

I've been encoding with ffmpeg.exe. Due to the muxing issue, I tried ffmpeg2theora, but I ran into some issues 1. it fails on 1080p content. 1920x1080. 1920x800 is okay. 2. I have raw yuv. in ffmpeg I use -s 1920x1080 to specify the source size. ffmpeg2theora doesnt seem to have a way to accept width/height for the raw yuv (420). So I need to do an additional step of muxing it into a

On Thu, 2020-09-24 at 16:57 +0200, Antony Stone wrote: > On Thursday 24 September 2020 at 16:31:33, hw wrote: > > > Hi, > > > > is it possible to "call" an IP camera? > > Only if it talks SIP (which some do, generally door entry cameras with a > push > button input and often a lock release output). > > > I'm thinking about something

I'm unable to convert these gifs using the latest version of ffmpeg2theora 0.25 and the svn preview. http://upload.wikimedia.org/wikipedia/commons/9/96/Diamond_animation.gif http://i39.tinypic.com/260ybup.jpg Under 0.25, neither GIFswork. The framerate is 25fps instead of 5. Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0.0: Video: gif, pal8, 264x192, 25 tbr, 25 tbn, 25 tbc

why is this happening? $ ffmpeg2theora /dev/video0 -f video4linux2 --inputfps 15 -o - | oggfwd myhost 8000 mypass /test.ogv [video4linux2 @ 0x196b8c0][3]Capabilities: 4000001 [video4linux2 @ 0x196b8c0]The V4L2 driver changed the video from 384x288 to 320x240 oggfwd: Connected to server Input #0, video4linux2, from '/dev/video0': Duration: N/A, start: 1258938983.307552, bitrate:

Has anyone noticed this? I have a video made with Final Cut Pro, which I convert to .mov via Compressor. This .mov file plays back fine in Quicktime. But when I then use ffmpeg2theora to convert to ogv, the video seems to play back too fast compared to the audio (I'm using VLC 1.0.2, the latest I believe, to play back the ogv file, and I also have an app that uses the recently

Hi all, Xiph aims at developing open-standards media formats. Though xiph.org tells about vorbis/theora/flac/speex, nothing is mentioned about container to use (that is ogg/ogm). I have a few questions Is there a difference between ogg and ogm? I guess its only the extension that is different and everything else is same. Some tools (like ogmtools) are available to create ogm files. What is

ok now I see why we need another packet in the header. The first one is basically for ID purposes (theora_decode_header()). I've jammed my huffman trees in there but it sucks because I need them later on when I actually build the huffman tree structs (theora_decode_init, calls InitHuffmanSet()). At that point the original header packet is gone so I've been keeping it around in a buffer.

Hi, I wrote a plugin to enable LiVES (a video editor) to encode theora/vorbis/ogg files. I'm looking for some advice towards improving quality. If someone would like to help me test this please note that you'll need MPlayer, ImageMagick, sox, the encoder_example from libtheora (somewhere in the PATH), and Python 2.3.0 (this is fairly all standard stuff). Consider the following clip:

Hi, I sent this message to the theora list but I'm not sure if it got through (activity seems to be very low, regardless). I'm hoping I have better luck here. I wrote a plugin to enable LiVES (a video editor) to encode theora/vorbis/ogg files. I'm looking for some advice towards improving quality. If someone would like to help me test this please note that you'll need MPlayer,

Hey all, I've setup a simple page that just displays a live webcam stream of me at work, and it supposedly falls back onto Cortado if your browser doesn't support the <video> tag. The URL is here: http://media.basilgohar.com/stream/ There's been a lot of talk about live streaming and low bitrate streams. Here is my command line (I've posted this before): time ffmpeg -f

Hi, I sent the message below a couple of months ago but I got no reply. Now that there's more activity perhaps someone could kindly provide me some guidance. Theora is great and the developers are doing a wonderful job, so I'd like to implement the codec in a way which does it justice... Original post: I wrote a plugin to enable LiVES (a video editor) to encode theora/vorbis/ogg files.