Hi there, about a few days ago I came across a problem in VLC which I have not been able to work myself around, and I am in dire need of help. Although having previously worked fine, about two or three days ago VLC stopped transcoding FLV files - any FLV files.
The files have originated from a wide range of websites, including YouTube, obtained with Orbit Downloader, and up until now transcoding them to MP4 with VLC has worked (mostly) seamlessly, and I have not encountered this problem before. I have successfully converted maybe 60, 70 files. Now, however, when I attempt at transcoding an FLV file to MP4 through the Transcoding Wizard (per usual), although it seems to be transcoding as normal, I get the following error message. Main: cannot add a new stream (unsupported while muxing to this format) streamouttranscode: cannot add this stream Once the transcoding process is complete, when opening the resulting MP4 file in QuickTime, it either refuses to open the file because 'it contains some invalid data' or it opens the file, but it only seems to have audio - there is no video screen. At times, it has also given me an error saying the MP4 file 'is not a movie file', but the aforementioned two are the most common errors I get, with the 'audio-only' file being the most common result. VLC is installed on Macbook Pro with Mac OS X 10.4.11.
Elmedia Player is the top-rated solution for Mac that supports such wireless technologies as Chromecast, AirPlay and DLNA allowing you to quickly and easily stream media files from your computer to Smart TV or to any other AirPlay, Chromecast, and DLNA-compliant devices. In my previous article, I looked at HTML5 video support in browsers compatible with Mac OS X 10.4 Tiger and 10.5 Leopard on PowerPC Macs.Today we’re looking at video performance on YouTube, which recently made HTML5 video its default.
The problem was first encountered in VLC 0.8.6c, but I have also tested transcoding in the following versions: 0.8.6d, 0.9.0 Nov 2 nightly version, and 0.8.6b (all of which I downloaded and installed after the problem surfaced), and to no avail. When transcoding the FLV file in the nightly version, VLC said it 'could not open the encoder.' I did not make any changes in the VLC preferences prior to the problem surfacing. I did install a Mac OS X update on Nov 24, but with certainty I can say that transcoding FLV to MP4 still worked in VLC on Nov 26, after which it has refused to transcode properly.
I searched the forum, FAQ and other documentation but was unable find a working solution (or at least one which I could understand). I deleted or reset the VLC preferences at least three times, but nothing changed.
It is always the video that is missing from the resulting MP4 file (if it works at all). I have tested it with numerous FLV files, and none work. Although VLC does play the files properly, it no longer transcodes them. I am not an expert on VLC or computers/computer language, but if there is additional information you need, I will try to provide it, and I would be most grateful for any help! I tested VLC 0.8.6d with a brand new username in Mac OS X - I created a fresh username and then reinstalled VLC and then tried transcoding a FLV file - but still no results.
The resulting MP4 still only seems to contain audio. Hopefully that is of some help in figuring this out. I was also able to locate the FLV video file I was successfully able to convert to MP4 on Nov 26 even after installing the Mac OS X update on Nov 24, and, strangely enough, when re-transcoding the FLV file, the MP4 file seems alright - video, audio everything. No other FLV files will transcode properly, however. Could this mean the Mac OS X update I installed has something to do with the problem I'm experiencing (I don't seem to be able to uninstall the update to check it myself)?
Thanks for the suggestion, I'll check that out. It's been a while since I tried using VLC on Mac OS X to convert FLV to MP4.
I had to try to remember why I was doing it in the first place. I think it was to burn FLVs to DVD for some older, non-computer-using people.
I never did complete that project, so I'm glad your message reminded me of it. I had an idea that QuickTime Player should be able to work with FLVs, since I installed the Perian component for QuickTime. I tried it and it worked. Then, using QT Player's 'Save as.' Feature, I saved the FLV as an Apple MOV file. I'm fairly certain the Mac DVD tools I have will let me burn that to DVD. I could probably use VLC to convert the MOV to MP4 if I needed to.
(I did try to convert to MP4, but QT Player didn't like the resulting file. I might need to change some transcode settings.) This isn't as elegant as an all-in-one VLC solution, but I think it should work with a little experimentation.
In, I looked at HTML5 video support in browsers compatible with Mac OS X 10.4 Tiger and 10.5 Leopard on PowerPC Macs. Today we’re looking at video performance on YouTube, which recently made HTML5 video its default. I’m using as my test video on a with 4 GB RAM and a 12 Mbps U-verse internet connection. Testing was conducted with. This video was filmed in 4K resolution on the Galaxy Note 4 and uploaded directly to YouTube with no editing in between. It is available in 144p, 240p, 360p, 480p, 720p, 1080p, 1440p, and 2160p formats. This video runs 1:33.
I’m testing at 360p, YouTube’s default, and 480p, which is DVD quality, when available. You can send your browser to to tell YouTube to serve you HTML5 video by default. YouTube sends 360p video at an average of 735 kbps, 480p at 1237 kbps, so my 12,000 kbps service should not be a factor. The video has 2,799 frames. Numbers are reported “stats for nerds”, which not all browsers support – and some support differently than others. OS X 10.4.11 Tiger Results Safari 4.1.3: No longer works with YouTube. TenFourFox 31.4.0.
![Mpeg-4 player for mac Mpeg-4 player for mac](/uploads/1/2/5/3/125386872/658164193.jpg)
360p: 281 painted, 2518 dropped (90.0%), 3.0 avg fps. 480p: n/a Opera 10.6: Unwatchable Recommendation: Don’t bother trying to watch YouTube videos on a PowerPC Mac running Tiger. Our best result still dropped 90% of frames, for an average frame rate of 3 frames per second (fps) – and that’s on a high-end Power Mac G5 with two 2.3 GHz CPUs. OS X 10.5.8 Leopard Results Safari 5.06, MP4. 360p: up to 33 fps, 200 frames dropped (7.1%), average 27.9 fps. 480p: up to 20 fps, 1171 frames dropped (41.8%), average 17.5 fps WebKit.
360p: up to 33 fps, 163 dropped (5.8%), average 28.3 fps. 480p: up to 20 fps, 1428 dropped (51%), average 14.7 fps TenFourFox 31.40. 360p: 2172 painted, 627 dropped (22.4%), average 23.4 fps.
480p: n/a, MP4. 360p: 2719 painted, 80 dropped (2.9%), average 29.2 fps. 480p: n/a. 360p: up to 33 fps, 180 dropped (6.4%), average 28.2 fps. 480p: up to 20 fps, 1066 dropped (38.1%), average 18.6 fps Roccat: n/a. Stats for Nerds not available.articles Opera 10.6: n/a. Opera does not let me click on anything while running a YouTube video. No setting quality.
Camino will not display an HTML5 version of this video. It only gives me the option of using Flash. Recommendation: Yesterday we recommended Aurora because of its support for all three HTML5 protocols, and with 360p video, it has the least dropped frames and highest average frame rate among tested browsers. None of the 480p results averaged even 20 fps, so unless you have an even more powerful dual- or quad-core Power Mac G5, don’t bother with 480p resolution. 20 fps is a jumpy as those old Super 8 movies from the 1960s and 1970s. 30 fps is what you’re used to on TV, and anything below 24 fps is sub-par. OS X 10.6.8 Snow Leopard Just for comparison, I ran some tests with my an old, low-end Intel Mac, a 2.0 GHz Core 2 Duo with 3 GB RAM running.
Keep in mind that this machine has integrated Intel GMA 950 graphics, generally looked down on by comparison with dedicated graphics chips. Like the Power Mac G5, the Mini is attached to a 1600 x 1200 pixel DVI monitor. Because of the results I was seeing, I also tested some browsers at 720p, which has a 2346 avg kbps and fared surprisingly well on such low-end hardware. Safari 5.1.10 will not report frame rate or let me choose resolution.