asyncread errors: jit.qt.movie: error -50 creating new movie from file
anyone ever figure out why? this issue has persisted for awhile.
Is anyone figured how to solve error -50?
there was a post on the boards somewhere that said deleting any generated text/subtitle tracks using quicktime pro seemed to alleviate some of these issues.
I went to movie properties and my video doesn’t have that text track…
Since asyncread works in another thread, I assume you are trying to load a file whose codec is not threadsafe.
A list of threadsafe and non-threadsafe components is listed here:
i’ve experienced this with photojpeg in the past, so im unsure of that being the sole cause.
Okay, we can investigate further, but we’ll need a patch and a link to a sample file, please.
hi, the patch is simply a message box whit "asyncread" connected to jit.qt.movie.
I post the video link and the patch here.
----------begin_max5_patcher---------- 290.3ockRFjaCBCDEcs8ovxqon.n1zzc8bTEE4fcSlHrMEOzRZTt6EaCoPqh TxFa4+7Yl+7DmnD9VamxwYuvdiQHmnDRPxKPFdS3ZQWYkvErwMpuraOvShkP UGFjO.X5GXp19InFKZawJEhGqUwA3MsQKvFnimv3b15AiuaMnQnC13u1.hpw V.xfV+DenXTqVfk6AytMMpRL14rhUoKRXYOsze83ygG8mWlfoUCl9vD1grIi 0AeGFa1h9u4h2XxCly8hmoT+QxMxHsx4D6T+CRB2QSYiRHuJgtSljeCLoHxj kQ.cMljeOLIaBSBsiWAl+9aTHRd84fxYaaJGW2gcf8anjJGBFABVyDOEy7rG jRUn7X7zfr1BFbHBr0yBH8L8GX1qut. -----------end_max5_patcher-----------
Thanks a lot
Thank you. I was able to reproduce on my machine. This example file is Sorenson Video 3. It would appear that this codec is not threadsafe. Here’s one thing I found when googling [quicktime sorenson thread safe component]
I am not familiar with how Sorenson Video 3 relates to "Apple Sorenson" which is allegedly threadsafe according to the chart in the earlier link I sent, however this codec doesn’t seem to work.
After I exported the movie to Photo-JPEG (video), AAC (audio), it loaded fine with asyncread.
So, AFAICT, my analysis remains appropriate to the reported problem. However, if someone can provide an example movie file which in theory should work (or definitive documentation or evidence that Sorenson Video 3 is in fact threadsafe), there may be some other problems. Keep in mind that the audio component, and perhaps additional tracks (like text/subtitle tracks mentioned in some of the asyncread threads) also need to be considered regarding whether or not the movie may be loaded in a background thread.
Thanks, that was very helpful
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