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Just noticed this submission is listed as “answered”.
“[Answered] Lightbox Ultimate – MP4 Video Plays But No Sound.”
Not being impatient, just unsure if this submitted in wrong place…
Hope to get video working for these files. Having problems with certain MP4 video files (not all) where audio plays OK, but video is black. Not solved when video put into full screen.
o WP eStore and Lightbox Ultimate plugins installed.
o Using WordPress 3.9.
o MP4 file created in Adobe Premiere Pro CS3, H264 encoder set as Apple Large with audio set to mono.
o All files processed with QTindexswapper2.
o Running on HP Pavilion tx 2000 with Windows 7.
Tried searching for this problem on forum, but couldn’t find solutions that seem relevant. Searched on “video all black”, “audio OK, no video”, “MP4 audio Plays But No Video”, “video not playing” and “mp4 audio plays only, video is black”
Audio plays (after slight delay) but not video. Even changed the viewing size, but still not fixed. See here:
http://www.learningviavideo.com/direct-mail-copywriting-abc-page-5-of-5/
Shortcode used:
[wp_lightbox_embed_protected_s3_video name=”direct_mail_copy_iabc_5.mp4″ bucket=”copywritiabc” width=”420″ height=”315″]</p>
The video file above, with only audio playing in PPV page, plays with no problem from hard drive with QuickTime player.
Similar page that does works, with a MP4 file processed the same way.
http://www.learningviavideo.com/fullversion_oneperpage/
shortcode used:
[wp_lightbox_embed_protected_s3_video name=”direct_mail_copy_3min.mp4″ bucket=”copywritiabc” width=”600″ height=”450″]YYY</p>
The code used in the “z_fullversion_oneperpage” page is the generic page code used to create the “Direct Mail Copywriting ABC Page 1 of 5” — where the video is black.
Another page that works with a MP4 file processed the same way.
http://www.learningviavideo.com/science-news-videos/
shortcode used:
[wp_lightbox_embed_protected_s3_video name=”trailer_nsf_2014.mp4″ bucket=”unpaidfull” width=”720″ height=”540″]
Another page that works, with a MP4 file processed the same way.
http://www.learningviavideo.com/victim-assistance-network-interview/
short code used:
[wp_lightbox_embed_protected_s3_video name=”ncvan_interview_1.mp4″ bucket=”unpaidfull” height=”450″ width=”600″]
On S3, tried converting from private to public. Some files played OK, others reported as corrupted. Deleted all files in S3 bucket. Then re uploaded one file – but still not working right.
Saw this in the forum….
“It turned out that the video bitrate was too high. Encoding the video with a lower bitrate helped solve this issue.”
….but MP4 files working OK all process with same bit rate as videos with black video. Doesn’t seem a solution.
Thanks. GW
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