https://www2.rigacci.org/wiki/ 2026-04-30T03:13:34+00:00 https://www2.rigacci.org/wiki/ https://www2.rigacci.org/wiki/lib/exe/fetch.php/wiki/dokuwiki.svg text/html 2018-01-14T17:43:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/appunti Appunti Elaborazione Video Riferimenti web * Video4linux Wiki <http://linuxtv.org/v4lwiki/index.php/Main_Page> Software Molti pacchetti relativi all'elaborazione video non sono presenti nella distribuzione Debian ufficiale a causa di potenziali problemi legati ai brevetti software. Per fortuna ottimi pacchetti Debian preparati da Christian Marillat si trovano presso il repository text/html 2025-10-26T17:26:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/ardour_dubbing Doppiaggio audio con Ardour Per doppiare un video sostitutendo o mixando l'audio originale con musiche, ecc. si può utilizzare il programma Ardour. In questi appunti un possibile metodo di lavoro da utilizzare. Ardour è ovviamente un programma grafico, quindi il processo di lavoro è visuale e non trasformabile in procedura batch da riga di comando. text/html 2016-12-12T07:08:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/avidemux Appunti Avidemux * <http://avidemux.berlios.de/> * <http://www.vcdhelp.com/> * <http://www.doom9.net/> Precompiled binariers I suggest to download and install the Debian package from this deb repository: deb ftp://ftp.nerim.net/debian-marillat etch main Compiling Avidemux To get the source tree from CVS, configure and compile the program: text/html 2005-12-26T21:00:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvd9to5 dvd9to5 It is a Perl script that would take one DVD (DVD-9, ~7.9GB) and write the main feature, perfectly, to a DVD-R (DVD-5, ~4.7GB). If required by space constraints, a requantization will be performed using tcrequant. Install * Download it from text/html 2017-06-09T14:01:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvdbackup dvdbackup Dvdbackup will extract all (or optionally only selected) titles as found on the DVD. It will structure the extracted files in a format suitable for burning at a later time with mkisofs and dvdrecord. If also the library libdvdcss2 is installed into the system, the program can decrypt the DVD-Video content. So the text/html 2007-07-24T19:23:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvd_ifo_errors Errori nella struttura di un DVD Video Si tratta di errori logici del file .IFO oppure di errori nel multiplexing? Sembra che questi errori siano abbastanza diffusi, generati sia da programma di authoring DVD non troppo rigorosi (mondo Windows) sia forse da schemi di protezione vari. Questi errori non vengono in generale evidenziati dai lettori di DVD, anche i player software text/html 2019-10-15T20:33:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvd_rip_and_fix Rip DVD contents and fix clock problems Everyting started with a DVD rip, which resulted in a video/audio with bad shuttering problem, at about every 30 seconds. The DVD was the result of the conversion from a Super 8 film, so there was not CSS problem or alike. The original DVD played well into any DVD player, so the problem was introduced during the encoding using text/html 2006-12-20T15:40:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvd_video DVD-Video: Teoria E' indispensabile che sul disco esista una corretta struttura con delle directory VIDEO_TS e AUDIO_TS valide e dei file VOB, BUP e IFO validi. Se questi requisiti non sono rispettati è probabile che il DVD-Video non venga letto dai normali lettori DVD (anche se potrebbe venir letto dai lettori DVD sul computer o nei più versatili lettori MPEG4). text/html 2005-12-26T16:56:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/dvd_video_creation From <http://www.linuxjournal.com/article/6953>. How a DVD Works (Quick Version) A DVD is comprised of one or more video title sets (VTSes), which contain video information in the form of MPEG-2 video streams. Each disc can have up to 99 VTSes, and each title set can be subdivided further into as many as 99 chapters, allowing DVD players to jump to a certain point within the video stream. Within each VTS, a DVD can have up to eight different audio tracks and 32 subtitle tracks that the viewer … text/html 2024-07-25T06:12:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/ffmpeg Video Editing on the Command Line ffmpeg Recipes The problem: I have recorded about 95 video clips using the XiaoYi Yi action camera. They make a total of about 20 Gb of data and 3.7 hours of play. I want to make some video editing with the following guidelines: text/html 2024-07-31T07:57:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/ffmpeg_final_rendering Final Rendering with libx264 and ffmpeg Whether you are working with Ffmepg, Avidemux or Olive Video Editor, you should be wondering what parameters to use to final render a video montage. Here are my choices for some specific purpose. Encoding for High Definition Video text/html 2021-10-28T09:43:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/ffmpeg_stack_horizontally Stack two videos side-by-side with ffmpeg I created a Unix shell script to do a side-by-side comparison between videos recorded with my two action cameras: a new SJCAM 8 Pro and the old Xiaomi Yi. Suppose that we have two videos taken simultaneously with the two cameras: text/html 2018-04-07T13:47:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/fix_smartphone_portrait_videos Convert a Smartphone's Portrait Video into Landscape, with ffmpeg We have a problem: nowday too much people have a smartphone which is capable to take videos of very good quality. But very few of them realize that we have (generally) two eyes: one on the right and the other on the left; they think that we have one eye above and the other to the bottom, so they keep to text/html 2026-03-30T07:28:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/flowblade_howto Flowblade HowTo Problemi riscontrati Abbiamo provato la versione 2.22 su Debian 13 Trixie. Il programma sembra abbastanza stabile, ma a volte il comportamento della timeline si corrompe: la selezione (con il click sinistro) di alcune clip non funziona, lo spostamento della playhead con i tasti Up e Down smette di funzionare e anche lo zoom con Mouse Middle Click non produce i risultati attesi. Chiudendo e riaprendo il progetto sembra che risolva il problema. text/html 2006-11-06T13:54:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/glossary Audio Video Editing Glossary AAC Advanced Audio Coding is the audio coding standard defined by the International Organization for Standardization (ISO) as part of the MPEG-2 specification. It is considered to be the actual “state of the art” in general audio coding and the successor of MP3. Compared to MP3, AAC provides higher quality music with approximately 30% less storage space or bandwidth. AAC provides up to 48 full-bandwidth audio channels with sample rates up to 96 kHz, plus 15 low fre… text/html 2010-03-15T11:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/libdvdcss2 libdvdcss libdvdcss is a simple library designed for accessing DVDs like a block device without having to bother about the decryption. * libdvdcss doesn't require the region of your drive to be set and will try its best to read from the disc even in the case of a region mismatch. text/html 2006-10-23T09:32:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/lsdvd lsdvd Lanciato senza parametri analizza il device /dev/dvd: Disc Title: MEDITERRANEO_SCN Title: 01, Length: 01:26:10.330 Chapters: 24, Cells: 24, Audio streams: 01, Subpictures: 00 Title: 02, Length: 00:01:34.040 Chapters: 01, Cells: 01, Audio streams: 01, Subpictures: 00 Title: 03, Length: 00:05:22.050 Chapters: 01, Cells: 01, Audio streams: 01, Subpictures: 00 Longest track: 01 text/html 2020-04-21T06:54:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/mplayer Mplayer and mencoder Mplayer was also very useful in extracting audio (AC3) and video (MPEG2) from a badly encoded DVD, see Errori nella struttura di un DVD Video. mplayer -dvd-device <path to device> Specifica il device DVD, predefinito /dev/dvd. Si può indicare anche una directory che contiene i file precedentemente copiati dal DVD (ad esempio con text/html 2026-02-11T15:43:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/olive_editor_compile_debian_bookworm How to compile Olive Video Editor in Debian 12 Bookworm You can download Olive Video Editor form the download page, the Linux version is distribute as an AppImage package, which should run on many GNU/Linux distributions without requiring to install dependencies, etc. This is partially true: I managed to start the program on my Debian 12 Bookworm computer, but text/html 2023-09-28T16:03:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/olive_editor_ovexml Olive Video Editor: an insight of the OVEXML file format Olive Video Editor is the most open video editor in the world. From its completely configurable render pipeline to its open source codebase, every aspect of it is designed to provide users with as much control as possible over both their work and their workflow. text/html 2024-07-31T08:00:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/olive_editor_tools Olive Video Editor Tools [Olive Video Editor Tools] This is an overview of the tools available in Olive Video Editor version 0.2.0-55eedbfc (Sep 24 2023 1:40:23 PM). Olive is a free and open-source cross-platform video editing application for Linux, Windows and macOS. It is currently in alpha. It is released under GNU General Public License version 3. It is written in C++ and uses Qt for its graphical user interface, FFmpeg for its multimedia functions, OpenImageIO library, OpenColorIO for col… text/html 2020-04-21T15:05:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/ripping_dvds_with_mencoder Ripping DVDs with Mencoder :!: For a simple recipe to rip (extract) the content of a DVD using Debian 10, see Ripping the content of a DVD. Install the necessary programs On Debian: (substitute k7 with 586 for Intel users) apt-get install mplayer-k7 mencoder-k7 ogmtools libdvdcss dvdbackup text/html 2026-03-26T18:32:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/start Elaborazione Video Video editing with GNU/Linux * Glossario con la spiegazione dei termini tecnici. * Appunti su formati video, programmi, acquisizione, ecc. * Appunti Avidemux è un ottimo programma per il montaggio e l'encoding. * Doppiaggio audio con Ardour * Transcode: conversione tra i vari formati da riga di comando. text/html 2014-09-02T11:02:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/streaming_capture Salvare un video in streaming da pagina web Formato mmsh Pacchetti da installare * vlc * ffmpeg * mplayer Esempio di come salvare un video da una pagina web del sito RAI. Puntare il browser sulla pagina che contiene il video, si ottiene la richiede di installare il plugin text/html 2024-02-01T10:56:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/subtitleripper How to rip DVD subtitles with vobsub2srt The vobsub2srt program reads a pair of subtitles.sub and subtitles.idx files, OCRs the images contained in the sub file and creates a subtitles.srt file with the subtitles text and the appropriate timing information obtained from the text/html 2017-10-12T07:19:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/transcode Transcode Conversione di un DivX danneggiato in XviD Procedura utilizzata per correggere un file DivX danneggiato. Avidemux non era in grado di aprire il file. Per cominciare con mplayer (che pare essere più bravo a decodificare file danneggiati) si è convertito in text/html 2011-05-06T09:29:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/vhs_video_capture Acquisizione video da VHS Tramite scheda TV L'acquisizione da videoregistratore VHS tramite scheda di acquisizione TV Pinnacle PCTV Pro, con chip Brooktree Corporation Bt878) ha dato risultati deludenti. Anzitutto ci sono gravi problemi di sincronizzazione audio/video text/html 2021-02-19T16:13:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://www2.rigacci.org/wiki/doku.php/doc/appunti/linux/video/vobcopy Ripping the content of a DVD How to rip the video and audio streams This recipe uses the lsdvd and vobcopy programs, which are found in the Debian packages of the same names (verified on Debian 10 Buster). First you need to list the content (chapters) of the video DVD: