ROQ to MP4

ROQ to MP4 Converter, Convert ROQ to MP4

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Convert ROQ to MP4

ROQ to MP4 software converts ROQ to MP4 with high quality and fast speed. With a simple user interface, the software is very easy to use. Just several clicks, the converter converts ROQ files to MP4 successfully. The software supports MPEG4 and H.264 codecs for MP4 file, and supports M4V that Apple products such as iPod, iPhone, iPad use.

Besides MP4, the converter converts ROQ to popular media formats and portable devices, for example, TS, MPEG, DV, H.264, MKV, 3G2, OGG, Xbox 360, MOV, iPad, and so on. The software also supports almost any video and audio file formats. It converts M2TS to WMV, MTV to ASF, OGX to iPod, RM to iPad, DIF to WMV, YUV to M4V, NUV to DV, FLV to PSP, and so on.

ROQ to MP4 software supports batch conversion and is full compatible with 32-bit and 64-bit Windows 10/8/7/Vista/XP/2000.

ROQ to MP4 Software is compatible with Windows 10, 8, 7, Vista, XP, 2008, 2003, and 2000

What is ROQ?
RoQ is a video file format that originated in The 11th Hour game. After Graeme Devine, the creator of the format joined id Software, the RoQ file format has been in use in every game the company has released such as Quake III, Return to Castle Wolfenstein and DOOM 3. As it applies to id Tech 4, these files are used for video sequences and animated materials and are stored in /base/video.

The format runs at a fixed 30 frames per second with an optional 22050 Hz mono or stereo sound track. Videos may technically be up to 65520 x 65520 pixels with both dimensions divisible by 16 and produce a valid RoQ file, but none of id Software's games will play back a video with dimensions that aren't a power of two, most likely because of OpenGL's texture sizing restrictions.

NOTE: It's been reported that movies with dimensions greater than 512 x 512 cause issues in various id Software games. Until this can be positively confirmed or denied it's best to avoid higher resolutions.

RoQ is a motion compensating vector quanitizer format, similar to Cinepak, but higher quality due to the use of the ITU-R BT.601 colorspace (the same one used in component video, PAL televisions, JPEG and MPEG), whereas Cinepak uses a low-quality YUV-like colorspace designed for faster decoding that often results in gamut degradation before compression even begins.

Because it's a vector quantizer, RoQ files are very fast to decode and very slow to encode. Decoding involves nothing more than converting the colorspace of the codebooks and then copying data, whereas encoding involves using several complicated schemes to produce a "palette" of image fragments that will result in the least degradation.

RoQ uses two codebooks per frame, with the second being constructed from pieces of the first, with up to 256 entries each. Due to this, only 1024 new colors can be introduced each frame, severely limiting the color gamut. This could arguably be improved by better predicting which sections will be motion compensated, but doing so is difficult, since codebook entries are generated from non-motion-compensated image sections, but whether or not they'll be used depends on the quality of them compared to motion compensated sections, resulting in a chicken-and-egg problem. This is made worse by the fact that all three major RoQ codecs are single-pass.

While the format is limited and much lower quality than MPEG and Indeo Video, it was presumedly preferred by id Software because of the lack of royalties, the lack of patent liability that presents a serious problem with most video formats, and the absence of complex platform-specific APIs.

What is MP4?
MPEG-4 Part 14, formally ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4. It is most commonly used to store digital audio and digital video streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images. Like most modern container formats, MPEG-4 Part 14 allows streaming over the Internet. The official filename extension for MPEG-4 Part 14 files is .mp4, thus the container format is often referred to simply as MP4.

Step-by-Step Instructions to Converting ROQ to MP4

Free Download ROQ to MP4 software
Install the software by step-by-step instructions
Launch ROQ to MP4 Software
Choose ROQ files

Add Files

ROQ

ROQ

Open

Choose "to MP4"

[Optional] If you want to change MP4 encoding parameters, for example, vodec codec, bit rate, frame rate, video size, and aspect ratio, please click "Options".