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File '/usr/lib/python3.1/codecs.py', line 300, in decode(result, consumed) = self.bufferdecode(data, self.errors, final)UnicodeDecodeError: 'utf8' codec can't decode byte 0x92 in position 805: invalid start byteHi, I get this exception. How do I catch it, and continue reading my files when I get this exception.My program has a loop that reads a text file line-by-line and tries to do some processing. However, some files I encounter may not be text files, or have lines that are not properly formatted (foreign language etc). I want to ignore those lines.The following is not working for line in sys.stdin:if line!= ':try:matched = re.match(searchstuff, line, re.IGNORECASE)print (matched)except UnicodeDecodeError, UnicodeEncodeError:continue.
AVCHD ( Advanced Video Coding High Definition) is a file-based format for the and playback of. It is and packaged into the, with a set of constraints designed around the camcorders.Developed jointly by and, the format was introduced in 2006 primarily for use in high definition consumer. Related specifications include the professional variants AVCCAM and NXCAM.Favorable comparisons of AVCHD against and solidified perception of AVCHD as a format acceptable for professional use. Both Panasonic and Sony released the first consumer AVCHD camcorders in spring of 2007. Panasonic released the first AVCHD camcorder aimed at the professional market in 2008, though it was nothing more than the (by then discontinued) card consumer model rebadged with a different model number.In 2011 the AVCHD specification was amended to include 1080-line 50-frame/s and 60-frame/s modes (AVCHD Progressive) and stereoscopic video (AVCHD 3D). The new video modes require double the data rate of previous modes.AVCHD and its logo are trademarks of Sony and Panasonic.
File organization on Panasonic and Canon solid-state AVCHD camcordersFor video compression, AVCHD uses the standard, supporting a variety of standard, high definition, and stereoscopic (3D) video resolutions. For audio compression, it supports both (Dolby Digital) and uncompressed audio. Stereo and multichannel surround (5.1) are both supported.Aside from recorded audio and video, AVCHD includes many user-friendly features to improve media presentation: menu navigation, simple slide shows and subtitles.
The menu navigation system is similar to DVD-video, allowing access to individual videos from a common intro screen. Slide shows are prepared from a sequence of AVC still frames, and can be accompanied by a background audio track.
Subtitles are used in some camcorders to timestamp the recordings.Audio, video, subtitle, and ancillary streams are into an and stored on media as binary files. Usually, memory cards and HDDs use the file system, while optical discs employ or.At the file system level, the structure of AVCHD is derived from the specification, but is not identical to it. In particular, it uses legacy ' file naming convention, while Blu-ray Discs utilize filenames (this may be caused by the fact that FAT implementations utilizing long file names are patented by and are licensed on a per unit sold basis ). Another difference is location of the BDMV directory, which contains media files. On a DVD-based camcorder the BDMV directory is placed at the root level, as on the Blu-ray Disc.
On the HDD-based camcorder the BDMV directory is located in the AVCHD directory, which is placed at the root level. Solid-state Panasonic and Canon camcorders nest the AVCHD directory inside the PRIVATE directory. Following a standard agreed upon by many still camera manufacturers, solid-state camcorders have a root-level directory for still images.AVCHD is compatible with the format and can be authored without re-encoding on Blu-ray discs or DVDs, though not all Blu-ray Disc players are compatible with AVCHD video authored on DVD media, a format known as AVCHD disc.AVCHD recordings can be transferred to a computer by connecting the camcorder via the connection. Removable media like SDHC and Memory Stick cards or DVDs can be read on a computer directly. Copying files from an AVCHD camcorder or from removable media can be performed faster than from a tape-based camcorder, because the transfer speed is not limited by realtime playback.Just as editing and video once demanded an expensive high-end computer, AVCHD editing software requires powerful machines.
Compared to HDV, AVCHD requires 2-4x the processing power for realtime playback, placing a greater burden on the computer's CPU and graphics card. Improvements in computing and graphics processor acceleration bring AVCHD playback to mainstream desktops and laptops.Video formats. An example of interlace combingAVCHD supports a variety of video resolutions and scanning methods, which was further extended with the 2011 amendment of the specification.
The licensing body of the specification defines a variety of labels for products compliant with specific features.Most AVCHD camcorders support only a handful of the video and audio formats allowed in the AVCHD standard.Interlaced video AVCHD supports both standard definition (AVCHD-SD) and high definition (AVCHD ) video. AVCHD 1080i is available on most AVCHD camcorders.
For some models this is the only recording mode offered.AVCHD-SD is used in the shoulder-mount Panasonic HDC-MDH1, as well as on its North American AG-AC7 cousin. A successor model - the AG-AC8, is also capable of recording in AVCHD-SD mode. Several models from JVC like the consumer camcorders GZ-HM650, GZ-HM670 and GZ-HM690 as well as the professional camcorder JVC GY-HM70 can record AVCHD-SD video. AVCHD-SD is not compatible with consumer DVD players, because it employs AVC video encoding instead of MPEG-2 Part 2.
AVCHD-SD can be played on a Blu-ray Disc player without re-encoding.Interlaced video had been originally designed for watching on a television set. Material recorded for interlaced presentation may exhibit or when it is, or watched on a computer or another device without proper.Some AVCHD 1080i camcorders can capture progressive video and record it within interlaced stream borrowing techniques from television industry. In particular, (PsF) is utilized in some Panasonic (25p Digital Cinema), Canon (PF25, PF30) and Sony camcorders.
The technique is used in some 60 Hz versions of Canon (PF24) and Panasonic (24p Digital Cinema) camcorders for recording 24-frame/s progressive video. Most editing tools treat progressive video recorded within an interlaced stream as interlaced, though some editing systems and most standalone Blu-ray Disc players are capable of recognizing the pulldown pattern to recover the original frames using the process known as.Progressive-scan video. Native Progressive logo (Canon)Since the very beginning, the AVCHD specification had supported 720-line progressive recording mode at frame rates of 24 and 60 frames/s for 60 Hz models and 50 frames/s for 50 Hz models. Conventional 12 cm disc (left) compared to 8 cm disc (right)When the AVCHD standard was first announced, recordable DVD was the only recording medium. To reduce camcorder size, manufacturers opted for an 8 cm disc, sometimes called.
Canon HG10 HDD-based AVCHD camcorderA hard disk drive was added as an optional recording medium to AVCHD specification shortly after the new video standard had been announced. Presently, capacity of built-in HDDs ranges from 30 GB to 240 GB.Pros:. Higher capacity than other media types, which allows for longer continuous recording.Cons:.
Sensitive to atmospheric pressure. The HDD may fail if the camcorder is used at altitudes above 3,000 metres (9,800 ft). Vulnerable to mechanical shock or fast movement. All HDD-based AVCHD camcorders employ non-removable disks.
To transfer video to a computer the camcorder must be connected with a USB cable. Most camcorders require using an AC power adapter for this operation. The sound of moving magnetic heads may be heard in the recorded video when recording in quiet environment. Replacing a damaged HDD requires disassembling a camcorder and cannot be done by a consumer.Solid-state memory card. Canon HF100 camcorder with a partially inserted Secure Digital card.Many AVCHD camcorders employ or ' memory cards as removable recording media. Solid-state memory cards offer rewritable storage in a compact with no moving parts.Panasonic and Sony chose removable flash memory as the sole type of recording media in their professional AVCHD lineups, specifically AVCCAM and NXCAM.Until 2010, Sony insisted on usage of its own memory card format - Memory Stick. Since 2010, Sony has allowed using both Memory Stick as well as Secure Digital cards in its consumer and professional camcorders.
Panasonic as well as other manufacturers of AVCHD camcorders use Secure Digital cards as removable flash media. AVCHD disc icon (Sony)A disc with AVCHD high-definition video recorded on it is sometimes called an AVCHD disc. AVCHD discs cannot be played in a standard DVD player, but can be played in many Blu-ray Disc players. Smooth playback is not guaranteed if overall data rate exceeds 18 Mbit/s. It is possible to create simple menus similar to menus used for DVD-video discs.AVCHD content can also be recorded on SDHC cards and played by many television sets, Blu-ray Disc players and media consoles.The AVCHD specification does not officially support Blu-ray Disc media, though some software packages allow authoring AVCHD content on Blu-ray Discs.
For better compatibility with Blu-ray Disc players AVCHD video can be authored on Blu-ray Disc media as Blu-ray Disc video. Authoring a Blu-ray Disc video title does not require re-encoding of AVCHD audio and video streams. The resultant disc plays in any Blu-ray Disc player, including those that do not explicitly support AVCHD.Many software vendors support AVCHD mastering.
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