similar to: Google Puts Weight Behind Theora

Hello! I'm trying to use ffmpeg2theora to encode raw (.yuv) files in I420 format (just frames, no headers at all), but failed to find corresponding input format. Is there any documentation of supported formats for ffmpeg2theora? Or maybe there is another command-line tool for Windows to encode raw video using Theora algorithm? Thank you for help! Alexander.

https://roundup.ffmpeg.org/roundup/ffmpeg/issue1197 I had originally encountered this problem using ffmpeg2theora. I switched to ffmpeg proper in an attempt to identify where the problem was at, and found that the problem persisted. As a result I had thought this was a problem with ffmpeg, but the ffmpeg folks seem to indicate that this is specific to Theora (too much finger pointing I think.) I

Hello, Could you kindly point me to some instruction, how to encode demuxed files (.m2v and .mp2) to .ogg (Theora + Vorbis)? I was trying to use ffmpeg2theora, but I don't know, how to put two files to ffmpeg2theora (one audio an one video) and did not found, how to mux them into one file? Exist a way, how to do two pass encoding? I'm using Ubuntu Fiesty Linux. Thank you, Jiri Navratil

Hello, I am looking for a way to convert VCD tracks to theora. I'd rather a command line tool. What would you suggest me? I already found I can do that with mplayer, by ripping to yuv and wav, then using the encoder_example to compress to theora, but would there be another better way? -- ASPO Infog?rance http://aspo.rktmb.org/activites/infogerance Unofficial FAQ fcolc

After a bunch of cumbersome testing I was able to transcode a Quicktime MOV file to OGG with theora and Vorbis. The method's a bit fumbly, but it works... It is automatable except for the initial audio decoding. Software used: Xine, oggenc, ffmpeg, ffmpeg2theora, oggzmerge Step 1: Get the video out of Quicktime ffmpeg -i infile.mov -b 5000 -f mpeg2video outfile.mpg Step 2: Get the video

I tried to encode some video from a DVD with encoder_example and ffmpeg2theora, and it looked great, except that with both encoders the A/V sync would drift noticeably after about 10 minutes, and by the end of a two hour movie it would be a couple seconds off. So instead of just whining about this and waiting for someone else to fix it, I decided to try to learn about what's causing the

Hi, I'm switching from the mainstream theora trunk to the exp one and I encounter a problem with the encoder. Every video I encode are played like a 'mosaic', I do not know how to say that. The picture is just a bunch of coloured pixels. During the encoding process the video stream is defined like that: File stream.yuv is 320x240 15.00 fps 420 video. Why 420 ? Why not YUV like for

ffmpeg2theora nightly builds found at http://firefogg.org/nightly/ still uses Thusnelda. Where can I get a Ptalarbvorm version for Windows? Regards

Hi I was surprised with size of Theora files and thought of feedback. Following 1minute duration Theora and Xvid files were made from a y4m file. The resolution is 1280x720: 1. Xvid 17MB 2. Ogg/Theora Q7 31MB 3. Ogg/Theora Q8 38MB 4. Ogg/Theora Q9 49MB 5. Ogg/Theora Q10 61MB The Xvid file was made using mencoder by 2 passes with following options:

Hi all I have the raw out put of a video camera in following format: mjpegb, yuvj422p, 1920x1080, 24.00 fps(r). I cannot directly convert this raw footage to Theora due to the YUV4MPEG2 only restriction of the encoder_example. Isn't it better to support other raw formats in encoder_example, such as what I have, mjpegb, yuvj422p? I presume even if I convert the mjpegb, yuvj422p to

Thanks a lot for the new encoder_example and the two pass encoding. I was not yet able to compare the gain of it against my previously encoded video (HD content takes a lot of time to encode). Why it can not be used with -v ? Could it be possible in the future ? I had better result with -v than with -V before. Congratulations again. -------------- next part -------------- An HTML attachment was

hi all, please can i know that, is it possible to make the theora with enabling the debugging (use "gdb" to debug) . if it is possible please let me know. i have experience with Mplayer debugging. in Mplayer we can enable debugging when it start configure (./configure ) thanks -- ----------- Regards, Janaka Priyadarshana -------------- next part -------------- An HTML attachment was

Okay, thanks to some stubbornness on my part and helpfulness on the part of people on this mailing list, I got the Ogg Theora alpha compiled up and installed and running. Yesterday, I went to the Prelinger archives (the public-domain video archive at www.archive.com) to find a high-quality original to re-encode as a test. The encoder worked just fine, and playback as well, and I thought I'd

Hi, I would like to create a movie out of a lot of png files. Using mencode I would do have something similar to mencoder "mf://*.png" -mf type=png:fps=5 -vf spp,scale -ovc lavc -o output.avi but I want to have an ogg format. I.e. an ogg movie How to do it? convert can convert the pngs to an mpg but not to an ogg! convert: unable to open module file

I have encoded successfully a YUV stream by using the encoder_example. Can We encode a row stream (get from a web cam) by using encoder_example. If we can not, is there any other way to encode a row stream by using theora codec. -- Nuwan Millawitiya -------------- next part -------------- An HTML attachment was scrubbed... URL:

I have encoded successfully a YUV stream by using the encoder_example. Can We encode a row stream (get from a web cam) by using encoder_example. If we can not, is there any other way to encode a row stream by using theora codec. -- Nuwan Millawitiya -------------- next part -------------- An HTML attachment was scrubbed... URL:

Greetings, I was on IRC about 7 hours ago and suggested that the FAQ be updated slightly. Rather than sit on my ass and complain I figured I'd ask a few people, and see if the idea was worth the time. Here's what Ive started with: http://www.dimension.net.nz/theora.html I'll be adding to it over the next 24 hours - mostly in the area of Playback and Encoding. Just threw it together

As was briefly discussed on IRC, ffmpeg and mplayer currently output two somewhat incompatible YUV4MPEG streams. This meant that encoder_example could take input from mplayer, but not ffmpeg or movtoy4m (a QuickTime->Y4M tool). This is a patch that fixes this issue and should allow encoder_example to take input from either format: diff -urd xiph-cvs/theora/examples/encoder_example.c

Having built libtheora-1.0alpha3, I tried it out on a 46 second long, 161 MByte raw dv format video clip. First, I copied these lines from ogg-theora-microhowto.html <snip> mplayer -ao pcm -aofile stream.wav -vo null file_to_be_encoded.avi & mplayer -vo yuv4mpeg -ao null -nosound file_to_be_encoded.avi & encoder_example -v 1 -a 1 stream.wav stream.yuv > theora_file.ogg

Hello. I'm trying to encode an Ogg Theora file from an unencrypted dvd using mplayer and encoder_example. I set up named pipes stream.wav and stream.yuv. I then run: mplayer -ao pcm -aofile stream.wav -vo null /dev/dvd & mplayer -vo yuv4mpeg -ao null -nosound /dev/dvd & encoder_example -v1 -a 1 stream.wav stream.yuv > lec1.ogg but I get the following error: File stream.wav is